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EX1200 SERIES - VTI Instruments

1. Show icon in notification area when connected Notify me when this connection has limited or no connectivity FIGURE 2 15 LOCAL AREA CONNECTION PROPERTIES DIALOG BOX 54 EX1200 Series Preparation for Use www vtiinstruments com 5 Determine if the PC is set to use auto or static IP Figure 2 16 shows examples of both auto and static IP address configurations 977021025 Urgusrtlos E General Alternate Configuration You can get IP settings assigned automatically if your network supports You can get settings assigned automatically if your network supports this capability Otherwise you need to ask your network administrator for this capability Otherwise you need to ask your network administrator for the appropriate IP settings the appropriate IP settings an address automatically Obtain an IP address automatically Use the following IP address Use the following IP address IP address 10 1 Subnet mask 255 255 0 0 Default gateway 10 1 0 124 Obtain DNS server address automatically Obtain DNS server addre matically O Use the following DNS server addresses Use the following DNS server addresses Preferred DNS server Alternate DNS server Advanced Advanced FIGURE 2 16 DYNAMI
2. 132 A e 80 password ee itte 136 period measurements See frequency and period measurements plug in module installatiOh it sa ts EHE HEEL ESPERE ERE saat 34 power consumption 2 33 power line cycles ettet ei See PLCs programming uec m D eG PUR ERU URS 144 programming 4 144 R range TASI vei ESIS auto range ERROR ERN auto range off OVE TANIN D range delay cirerers asoro rieri EEEo EEEE E EEN TEETE reset network 40000 67 DUIDOR iuro eor een hei oi Dn eae D CHR CI 66 67 debounce protection mode device reboot mode device reset mode DC Lreset mode cei nr HR ERREUR 67 resistance measurements 88 90 2 wire method 4 wire method lead wire resistance errors 89 test CUETEnI ie nri 89 resolution 78 See PLCs RIS a aos See connectors Ethernet RTD measurements riti tete 95 2 wire method 4 wire method S Callendar Van Dusen equations sese 95 S SAVE States iin c e p RR RENE 28 scanner soft front panel DMM configuration 2 112 results field eo
3. 121 Network Configuration nein eoe p RIO RU TE gstaus shstdvsess DOO DR 124 Time Configuration nini ep eene dense pU migehep eei 125 EXIT Sy chronization eene opere p RO IDRUR UR RERO DD DERE 127 EXLEIdentifiCation ree PR t P EE t Re TERR DEN ED UE 129 Bhnk EAN d A O e HERPES 130 Change Password ssc ente Deeper done EET 130 PIU peni monP be DE 131 To eru OVE Pert 136 25 repr PRENDE 136 Programming References oot eee ee e RERO Te CORR GRE UI HED I Ter REES 136 SECTION 9 Pr 137 D Y 137 Replaceable hri eee on idee e eicere tes e det 137 DMM Removal Replacement ottenere rem nere p ee ipi deret e 137 EX1200 DMM 140 Te so 140 oie fti ppt HI e 140 setting Instruments hee tier c ee e eee e t de S PE ERR ERES 140
4. FIGURE 7 11 TYPICAL SWITCH SOFT FRONT PANEL For switches that support read back the relays are color coded to provide the user an indication of the relay states The Color Legend provides the meaning of each color Dark blue relays have been commanded closed This color should appear each time a relay is selected and working properly A light blue relays may be found on a latching relay It indicates that although the relay has not been commanded closed read back indicates that it is closed If a port turns red after being commanded this indicates that the relay has failed to close and may require repair For switches that do not support read back relays will appear dark blue for all states The main toolbar of the SFP provides the following functionality e Control Mode Three control modes are available for EX1200 modules Monitor Only In this mode the user can view the actions the various EX1200 components while the module is actively performing automated test The image is refreshed every 3 s In this mode no modifications can be made If a another user has established a session with the EX1200 all other sessions established after that will be Monitor Only sessions until the previous session has ended Synchronous Mode In this mode the user can manipulate the relays in the EX1200 in real time As the user clicks a port or sets a value and it affects the EX1200 at that time Asynchronous Mode In this mode the u
5. 3 3 V rail 6A 5 V rail 3 75 24 V 1 6A INPUT POWER RATING EX1262 EX1266 230 VA EX1200 Series Introduction 13 VTI Instruments Corp EX1208 EX1268 920 VA LINE VOLTAGE 90 V to 250 V LINE FREQUENCY Manually set to 50 Hz or 60 Hz default LXI SPECIFICATIONS LXI CLASS COMPLIANCE LXI Version 1 4 Specification with Extended functions LXI Wired Trigger Bus LXI Event Messaging LXI Clock Synchronization LXI Timestamped Data LXI Event Logs EVENT RESPONSE TIMES Minimum Maximum Event Source Trigger Destination LXI LXI 48 ns 54 ns 58 ns LXI DIO 34 ns 38 ns 44 ns LXI LAN 1 4 ms 1 45 ms 1 5 ms LXI BPL 75 ns 80 ns 85 ns DIO LXI 175 ns 180 ns 185 ns DIO DIO 160 ns 165 ns 170 ns DIO LAN 1 4 ms 1 45 ms 1 5 ms DIO BPL 200 ns 205 ns 215 ns LAN LXI 3 6 ms 3 8 ms 4 5 ms LAN DIO 3 6 ms 3 8 ms 4 5 ms LAN gt LAN 15 ms 17 ms 25 ms LAN BPL 3 8 ms 4 0 ms 4 8 ms BPL LXI 74 ns 79 ns 84 ns BPL DIO 64 ns 69 ns 74 ns BPL LAN 1 6 ms 1 65 ms 1 7 ms BPL BPL 10 ns 15 ns 20 ns The maximum time for events routed to the LAN depend on many factors network traffic bandwidth etc and can vary dramatically TIMESTAMP ACCURACY 200 us CLOCK SPECIFICATIONS Clock oscillator accuracy 50 ppm Synchronization accuracy Reports synchronized when lt 200 us of the 1588 master clock Timestamp Accuracy As good
6. AMETEK VT m ADVANCED MEASUREMENT TECHNOLOGY Instruments EX1200 SERIES HiGH DENSITY SWITCH MEASURE AND CONTROL SYSTEMS USER S MANUAL P N 82 0127 000 Rev June 25 2015 VTI Instruments Corp 2031 Main Street Irvine CA 92614 6509 949 955 1894 VTI Instruments Corp TABLE OF CONTENTS 6 OR RERO RE ERR PRAE De VERA RETIUM 2 Cert UII EE D 5 Warranty sten uIne DH A REOR REESE 5 Limitation of Warranty Ste eh te hod eho Hee piece dede Rete pH m edad re tore ERR ERRARE 5 ELE D M 5 Restricted Rights Eegend eei date phe deae eee pU ed Ret eae 5 DECLARATION OF CONFORMITY ERR REPE ERES 6 GENERAL SAFETY INSTRUCTIONS RP EE EET UM AER ERE Een 7 Terms and Symbols opns ede ee ea eMe ERI EEG Ee 7 MEVIIC REPE uH p 7 SUPPORT RESOURCES 5 ERRARE RE tach ances ORAE ER ORO DIU AREE ETE 9 Y 1 10 INTRODUCTION A EE EAS ENERO URERNINSHO NOR A REPE ORE Or 10 TREO ER RUE RR FO IRSE RE UPPER ed 10 EX1200
7. FIGURE 2 20 TCI IP SELECTION d Click the Use the following IP address radio button 58 EX1200 Series Preparation for Use www vtiinstruments com e Enter the desired IP address If using the IP from the example above 192 168 1 1 can be used f Ifnot automatically completed after the IP address is entered set the Subnet mask field to 255 255 255 0 levy Properes General You can get settings assigned automatically if your network supports this capability Otherwise you need to ask your network administrator for the appropriate IP settings Obtain an IP address automatically Use the following IP address address 192 1688 1 1 Subnet mask 255 255 255 0 Default gateway Obtain DNS server address automatically Use the following DNS server addresses Preferred DNS server Altemate DNS server FIGURE 2 21 COMPLETED NIC STATIC CONFIGURATION g Click OK to exit the network configuration properties TIME CONFIGURATION The EX1200 will initially be configured to receive its time through PTP Precision Time Protocol The user can also set time using SNTP Simple Network Time Protocol or the time can be set manually The manual setting is necessary if the network environment is such that the unit cannot reach the Internet For more information see Time Configuration in Section 7
8. 4 83 A thermoelectric voltage errors eee 81 DCT See current measurements filter enses eene enne DCV See DC voltage measurements pM MM declaration of conformity essere 6 yoliage measurements DEVICE layer p re oe n P o ets 103 ac common mode offset 87 DHCP 27 er qd c M ag MU DHL ea 2 DHOP SERVER ogni ee be 55 n 2 To 63 68 DMM connection 84 dimensional diagram load error calculation 86 1U Tull rack mainframe 16 load errors 1U half rack mainframes E 3U Mainta MES PCM Ip hr DMM calibration web page OG i Vig Wen acts rc RENE CE T calibration ose nre eo eer ge See AC voltage measurements calibration functions certet terere toe erri WX DA SRM EA See LXI alarm reference instruments TeSUlts o eorr eene ee ERAT ene Oden tege be quine be CU Pow Pn RV XU BRE CRAS NE EXCEPTA TES temperature DMM functions TANGO cesses DMM input connections B DMM Bo pre front panel 22 basic DMM operation 69 rear panel EP basic mainframe operation NOS 63 5 hee es vemm D blanking panels tentes 34 53 DMM soft front panel blink LAN indicator web page 136 advanced settings BOnjOUE 5 tree 58 59 basi
9. Instruments FF inex c Sum 5 Soft Front Panel Cd Network Configuration Time Configuration UXT LXI Synchronization ID LXI Identification 2 Blink LAN Indicator Change Password Upgrade Reset Reboot fg fA FIGURE 7 22 UPGRADE WEB PAGE Perform the following steps to conduct a firmware upgrade 1 Remove Temporary Internet Files 2 Perform a Reboot or a power cycle 3 Connect to the EX1200 via the embedded web page 4 Click on the Upgrade link 5 Click on the Browse button and select the firmware image file to be uploaded to the instrument 6 Click the Submit button to initiate the upgrade process During the firmware upgrade an Upgrade Status window will appear see Figure 7 23 Note that if a DMM is not installed in the system one fewer step be reported Controller DMM firmware upgrades typically take about 5 minutes to complete Upon completion of the upgrade click on the Reboot button After rebooting has completed approximately one minute click on the Index link in the Command Menu to continue operating the EX1200 using the web interface Note that the Rebooting prompt will not refresh itself EX1200 Series Maintenance 131 VTI Instruments Corp Vii Instruments Corporation EXA200 Uperade Status Windows Internet Explorer Bec Roe sen er
10. ig Favorites E VTI Instruments Corporation EX1200 Upgrade Status Instruments Index SFP Soft Front Panel w A TEM and programming flash 4 of 5 Done Erasing and programming flash 5 of 5 Done rime Configuration Upgrade complete LXI Synchronization LXI Identification T 29 Blink LAN Indicator TN Change Password Upgrade Reset Reboot 45 2 FIGURE 7 23 COMPLETED CONTROLLER AND DMM UPGRADE During a plug in module firmware upgrade an Upgrade Status window similar to the one shown in Figure 7 24 appears A step will appear for each plug in module installed in the mainframe Each plug in module takes approximately one minute to upgrade Upon completion of the upgrade a hard power cycle is required in order for the upgrade to take affect Note that clicking the Reboot button will not be sufficient for this operation 240200 Up 21 19 35002 49 921 GO momen amp es x uve search Favorites Ek VTL Instruments Corporation EX1200 Upgrade Status isi fefe z Te MS CC UTE Instruments Upgrading 1200 30485 slot 3 Done Upgrading 1200 4003 in slot Done Soft Front Panel Network Configuration Time Configuration T LXI Synchronization L
11. EX1200 Series Preface 3 VTI Instruments Corp Connecting to tbe EXT 200 5 re nene cere PD e pO RO SO Te EO PET DDR DE Ter per 141 Loginanto SEP eet e DO n e RR DE e 142 Tame Configuration ione Ste en me Dp epo ST Det e bn Droite 143 Performing Calibtation npe eet repe poni OCURRE De 143 Performing Verification nete eet Deep ROT DO ite 145 APPENDEX VPE 147 ONBOARD MEMORY e eerte espiritu e ire o ree dere edes 147 Memory Listings and Clearing Procedures esesseeeeeeeeeee eene nennen 147 APPENDIX B pe M 149 POWER CONSUMPTION recreo ttv eate rae de eee civ rever rg repe eee e bate 149 Plug in Module Power Consumption isses ener nnne tene teen 149 APPLICATION NOTE 5 0 rH ht ee nr eret 150 150 EX12x2 and EX12x6 Power Consumption Calculation eese enne 150 EX12x8 Power Consumption Calculation eese nennen rene enne tenen 151 55 153 4 EX1200 Series Preface www vtiinstruments com CERTIFICATION VTI Instruments Corp VTI certifies that this
12. The tabletop installation option can be used when an EX1200 is not installed in a rack but will be employed as a bench top or desktop instrument Required Tools 2 2 Phillips screwdriver Parts List Item Qty Description 1 14 Screw 6 32 x 7 16 Pan Head Phillips Zinc 37 0044 044 2 4 Screw 6 32 x 1 2 Pan Head Phillips Zinc 37 0044 050 3 4 Feet Corner Rubber U Shaped 37 028 1 201 4 2 Screw 6 32 x 3 8 Pan Head Phillips Zinc 37 0044 037 Assembly Procedure 1 Place the chassis a protected work surface with its input connectors facing front 2 Using Figure 2 8 locate the installation locations for each rubber foot 3 Using the 2 Phillips screw driver install the four rubber feet using four 4 6 32 x 7 16 pan head Phillips screws to secure the top and bottom and one 1 6 32 x 1 2 pan head Phillips screw to secure side of each foot 42 EX1200 Series Preparation for Use www vtiinstruments com 4 Per Foot for Rear and Front Right Feet FIGURE 2 8 TABLE TOP FEET INSTALLATION DIAGRAM EXPLODED FRONT VIEW EX1200 Series Preparation for Use 43 VTI Instruments Corp Rack Ear Installation Option P N 70 0361 101 The rackmount installation option includes all the parts necessary to mount an EX1200 system to the front of a standard test rack Required Tools 1 2 Phillips screwdriver Parts List Item Qty Description
13. 255 255 255 0 LXI Identification MAIS Blink LAN Indicator 7 Change Password Upgrade Reset 3 Address 10147 Subnet Mask 255 255 0 0 Reboot Gateway Address 10 1 1 127 00003 07007 DOCI FIGURE 2 19 COMPLETED 1200 MAINFRAME STATIC IP CONFIGURATION 8 Click the Submit button Once this is done it is no longer possible to communication with the EX1200 mainframe This is normal and is addressed in the following steps Set a static IP address for the NIC card by doing the following a Navigate to Start Settings Network Connections b Right click on the NIC card that the EX1200 mainframe is connected to and select 9 Properties c Select Internet Protocol TCP IP and click Properties mee Perl General Advanced Connect using E9 Realtek RTL8168C P 3111C P PCI This connection uses the following items 8 File and Printer Sharing for Microsoft Networks dl QoS Packet Scheduler Internet Protocol TCP IP COE EH Urinstal Description Transmission Control Protocol Intemet Protocol The default wide area network protocol that provides communication across diverse interconnected networks Show icon in notification area when connected v Notify me when this connection has limited or no connectivity
14. DMM Backplane O1 dg E ip rc 9 9 I f EX1200 Mainframe FIGURE 4 16 RTD 2 Idd Multiplexer Cardg WIRE CONNECTION VIA THE EX1200 DMM BUS 94 Basic EX1200 DMM Operation www vtiinstruments com 4 Wire Measurement Connections The 4 wire RTD measurement method is the most accurate method of the two methods as the set up automatically removes connection lead and switch resistance This method does however does increase setup cost as additional cabling is required DMM Front Panel FIGURE 4 18 RTD 4 WIRE CONNECTION TO DMM FRONT PANEL If the RTD is connected to a multiplexer card the wiring is similar to that used for 4 wire resistance measurements Kelvin method To properly operate an EX1200 multiplexer cards in 4 wire mode refer to the 1200 Switch Card User s Manual for more information DMM Backplane EX1200 3048 EX1200 Mainframe FIGURE 4 19 RTD 4 WIRE CONNECTION VIA THE EX1200 DMM Bus Programming Interface The VTEX DMM and VTEX Scanner drivers provide the access to the features of EX1200 DMM Refer to the below functions of the driver in its documentation IVTEXDmmTemperature Interfac IIviDmmTemperature RTD Property Basic EX1200 DMM Operation 95 VTI Instruments Corp Using a Thermistor While RTDs can be used over a wide temperature range thermistors offer a higher sensitivity to temperature change although they mus
15. TABLE 4 10 SUPPORTED TEMPERATURE SENSORS Configuring Temperature Measurements Temperature measurements require the following information to be properly configured Input As with other measurement functions the DMM s input can be routed from the external front panel or via the internal DMM bus If the thermocouples are being connected to switch cards with DMM access then internal input mode should be selected Digits The resolution or number of digits can be set for temperature measurements Either 3 4 5 or 6 digits be selected Resolution should be optimized based on application and required results While lower resolution yields faster sampling rates it also decreases the accuracy of the reading Unlike other functions the digits of a temperature measurement do not directly correlate to the number of significant digits for a given measurement but follow the values listed in Table 4 11 Transducer Type 6 5 digits 5 5 digits 4 5 digits 3 5 digits Type B TC 0 01 C 0 1 C 1 C 10 C Type E TC 0 001 C 0 01 C 0 1 C 1 C Type J TC 0 001 C 0 01 C 0 1 C 1 C Type K TC 0 001 C 0 01 C 0 1 C 1 C Type N TC 0 001 C 0 01 C 0 1 C 1 0 01 C 0 1 C 1 C 10 C Type S TC 0 01 C 0 1 C 1 C 10 C Type T TC 0 001 C 0 01 C 0 1 C 1 C RTD 0 01 C 0 1 C 1 C 10 C Thermistor 0 01 C 0 1 C 1 C 10 C TABLE
16. IVI COM Programming Interface The VTEXDmmFunctionEnum interface provides properties and methods for selecting the measurement function The IVTEXDmm Configure interface provides method for setting the range and measurement function selection CONFIGURE TRIGGERING The EX1200 DMM trigger model is divided into five states IDLE INITIATE WAITING FOR TRIGGER WAITING FOR SAMPLE TRIGGER and ACQUISITION see Figure 4 3 A system reset condition puts the EX1200 DMM in the IDLE state The DMM Initiate API call begins the acquisition sequence by transitioning the instrument into the INITIATE layer As this occurs the reading buffer memory is cleared As soon as the initiate process is complete the device transitions to the TRIGGER state The DMM remains in the TRIGGER state until a specified TRIGGER event occurs After receiving a trigger the DMM will wait the specified trigger delay until it takes a measurement A delay allows a signal to stabilize if needed If a user configured delay is used it will override the automatic trigger delay used by EX1200 DMM Triggers can also be generated by software commands or may be set to immediate which causes a transition from the TRIGGER state to the ACQUISITION state The SAMP TRIGGER acts as a secondary trigger The same principles that apply to the TRIGGER state apply to the SAMP TRIGGER state Using the INTERVAL setting the DMM can be configured to take multipoint readings with a defined time i
17. 0 when all instruments have released it This is useful if multiple instruments in parallel operation must all complete before another instrument can begin its operations Each channel is programmable as to whether it is in Wired OR or Master Slave mode When an Trigger Bus channel is configured for Wired OR mode exactly one instrument on the bus must provide a bias on the channel This is what allows the channel to fall deterministically back to a 0 state when all other devices release it Each channel is programmable as to whether it will provide the Wired OR Bias when it is in Wired OR mode The default selections are Wired OR mode is off Wired OR Bias mode is off DMM Front Panel Connectors Optional These connections allow for use of the onboard DMM in measurements The DMM and its connections are further discussed in Section 4 DMM Bus I O For EX1200 mainframes with a DMM it is possible to access the DMM through the DMM bus as an alternative to the front panel banana jacks see DMM Input Connections in Section 4 for more detail on the DMM front panel connector Alternatively the bus can be used to route signals to an external DMM though this connector To use the onboard DMM the DMM inputs must be assigned to the backplane instead of the front panel Please see Table 3 below for a description of the bus signals Note that when IN and OUT DMM Bus connectors exist on a mainframe the pin mapping for each con
18. 6 digit 10 mQ 0 0200 0 0150 3 00 Q 3 00 Q 10 6 digit 10 mQ 0 0100 0 0090 3 00 Q 3 90 Q 100 6 digit 100 mQ 0 0100 0 0009 3 90 Q 78 0 Q 1 6 digit 1Q 0 0250 0 0008 78 0 Q 1 68 10 67 digit 10Q 0 0550 0 0010 1 68 45 0 100 6 digit 100 Q 0 1200 0 0050 45 0 45 0 100 Q 5 digit 1 mQ 0 1500 0 0700 0 63 Q 0 78 Q 1 5 digit 10 mQ 0 0550 0 0150 0 78 Q 3 30 Q 3 5 2 digit 100 mQ 0 0250 0 0200 3 30 Q 3 30 Q 10 5 digit 100 mQ 0 0110 0 0110 3 30 Q 4 20 Q 100 5 digit 1Q 0 0100 0 0011 4 20 Q 81 0 Q 1 5 digit 10Q 0 0260 0 0008 8100 4 50 10 5 digit 100 Q 0 1000 0 0040 4 50 45 3 KQ 100 5 digit 1000 Q 0 1250 0 0055 45 3 45 3 100 Q 4 2 digit 10 mQ 0 1500 0 1500 0 66 Q 0 81 Q 1 KQ 4 2 digit 100 mQ 0 1000 0 0250 0 81 Q 3 60 Q 3 4 2 digit 1Q 0 0400 0 0300 3 60 Q 3 60 Q 10 4 digit 1Q 0 0250 0 0150 3 60 Q 8 70 Q 100 4 digit 10 Q 0 0180 0 0025 8 70 Q 84 0 Q 1 MQ 4 digit 100 Q 0 0270 0 0008 84 0 Q 4 53 10 MQ 49 digit 1000 Q 0 1200 0 0050 4 53 45 6 100 MQ 4 digit 10000 0 1300 0 0090 45 6 45 6 4 WIRE RESISTANCE 1 YEAR ACCURACY RANGE RESOLUTION Tou 5 URCHO SNC READING RANGE lt 30 RANGE gt 30 RANGE 100
19. Foundation website 136 EX1200 Triggering www vtiinstruments com SECTION 9 MAINTENANCE REPLACEABLE FUSE The EX1200 DMM has a replaceable fuse located on its front panel for current input and is user replaceable It is 3 15 A 250 V fuse and can be replaced with VTI P N 35 0054 315 Alternatively P N 2173 15XP from Littlefuse Inc may also be used as a replacement DMM REMOVAL REPLACEMENT VTI recommends annual calibration of the EX1200 DMM to assure that the instrument maintains the tightest specifications To eliminate the need to return an entire mainframe for calibration to VTL the DMMs for the EX1266 EX1267 EX1268 and EX1269 can be removed from mainframe The mainframes can still be used once the DMM has been removed Part Number Description Compatible Mainframe 70 0401 000 6 SLOT LXI CHASSIS SLIDE IN DMM EX1266 70 0402 000 3U LXI CHASSIS SLIDE IN DMM EX1267 EX1268 EX1269 The following sections describe how to remove the DMM from the two mainframes EX1266 DMM Removal Removal Procedure 1 Remove the three screws shown in Figure 9 1 using the 2 Phillips screwdriver Retain these screws for re installation 2 Use the handle on the front panel of the DMM to slowly remove the DMM from the chassis Note that once half of the DMM has been removed remove the connector at J6 on the input board EX1200 Series Maintenance 137 VTI Instruments Corp FIGURE 9 1 EX12
20. 0 C Rp Roll 100 For gt 0 C Ry Ry l AT Br Where resistance of RTD at temperature in ohms Ro nominal resistance of RTD resistance at 0 C T temperature in C A a 1 6 100 a 1 x 10 1 x 105 For the RTD s with built in support the following Callendar Van Dusen RTD parameters used RTD Type Standard Ro PT100 ITS 90 0 003850 0 10863 1 49990 100 Q D100 ITS 90 0 003920 0 10630 1 49710 100 Q F100 ITS 90 0 003900 0 11000 1 49589 100 Q PT385 IPTS 68 0 003850 0 11100 1 50700 385 PT3916 IPTS 68 0 003916 0 11600 1 50594 39169 Basic EX1200 DMM Operation 93 VTI Instruments Corp 2 Wire Measurement Connections A 2 wire RTD measurement is connected in the same manner as a 2 wire resistance measurement The HI and LO terminals of the DMM are connected to the RTD s two terminals no polarity restrictions Sense HI Input Input LO Sense LO DMM Front Panel FIGURE 4 15 RTD 2 WIRE CONNECTION TO DMM FRONT PANEL When using the DMM bus backplane through a switch multiplexer as shown in Figure 4 16 observe the common practices introduced in the voltage and resistance measurement discussions above Shielding greatly reduces the effect of external interferences noises It should also be noted that the shields should only be connected to ground at one end of the cable and not both
21. 1 2 Rack Ear 1200 41 0472 008 2 10 Screw 6 32 x V F H Undercut Phillips Zinc 27 0114 025 Assembly Procedure 1 Place the chassis on a protected work surface with its input connectors facing front 2 Using a 2 Phillips screwdriver install the rack ears P N 41 0482 009 on the front of the EX1200 using five 5 6 32 x 3 8 flat head Phillips stainless steel screws P N 37 0114 025 for each rack ear Note that the Optional Mounting Locations in Figure 2 9 allow the EX1200 to be installed in a rack either flush or recessed 5x Per Side FIGURE 2 9 RACK EAR INSTALLATION DIAGRAM EXPLODED FRONT VIEW 44 EX1200 Series Preparation for Use www vtiinstruments com Rackmount Installation Option P N 70 0361 102 The rackmount installation option includes all the parts necessary to mount an EX1200 to the front and rear of a standard test rack Required Tools 1 2 Phillips screwdriver 2 5 16 wrench or socket Parts List Item Qty Description 1 2 Rack Ear EX1266 41 0472 008 2 2 Bracket Unit Support EX1200 41 0482 010 3 2 Bracket Rear Rack Support EX1200 41 0482 011 4 10 Screw 6 32 x F H Undercut Phillips Zinc 37 0114 025 3 2 Screw 6 32 x 3 8 Pan Head Phillips Sq Cone SEMS Zinc 37 0028 037 6 6 Screw 8 32 x 3 8 Pan Head Phillips Sq Cone SEMS Zinc 37 0073 037 7 4 Nut Hex KEPS 8 32 Steel Zinc 37 0200 832 Assembly Pr
22. EX1200 Series Preparation for Use 59 www vtiinstruments com SECTION 3 BASIC MAINFRAME OPERATION INPUT CONNECTIONS This section describes the connectors that are available on the EX1200 mainframe Tables are provided to indicate the pin mapping used for these connectors and a brief description of the connectors functionality is provided as well Ethernet Connector EX1200s use a 10 100BaseTX RJ 45 connector to connect to PCs LANs and other networking devices The RJ 45 connector provides auto MDIX functionality that automatically handles crossover in point to point connections The unit will also detect and correct pairs that are wired backwards Therefore crossover cables can be used but are not required Digital 1 0 The EX1200 features an 8 channel digital I O DIO port on the rear panel of the instrument This port can be used as an arm trigger source for presentation of output triggers from plug in modules or the integrated DMM and as a general purpose output device The digital I O connector is a standard DB 9 with the following pin assignment Pin Function 1 DIO Channel 0 DIO Channel 1 DIO Channel 2 DIO Channel 3 DIO Channel 4 DIO Channel 5 DIO Channel 6 DIO Channel 7 GND o slo Kk eee J9 TABLE 3 1 DIGITAL I O CONNECTOR amp PIN ASSIGNMENT NO 00 NE UN As a general purpose output device each DIO channel can be independently programme
23. External and BPLO 7 Route This button appears when a backplane line BPLO 7 is selected for Source Clicking this button launches a dialog box that allows the user to select an external trigger line LXIO 7 DIOO 7 LANO 7 or ALARMO to connect to the chosen backplane line High Limit Indicates the upper bound of the Over Limit event Low Limit Indicates the lower bound of the Over Limit event Notes on Web Page Use If a measurement has been initiated and seems to be stuck in the Waiting For Trigger state check the Trigger Properties field In order for a scan to begin immediately without interaction with other instrumentation both inputs the Trigger Input Source and Sample Trigger Source should be set to Immediate If the EX1200 stops taking measurements unexpectedly check the Trigger Input Count and Sample Trigger Count settings They control the number of measurements taken before the DMM needs to be initiated again Advanced Settings e Math Allows the user to make corrections to the measurement readings using an mx b equation Gain Sets the gain correction factor Represents the m in the mx b equation The default value is gain 1 Offset Sets the offset correction factor Represents the b in the mx b equation The default value is gain 0 Incorrectly setting the gain and offset parameters can result in invalid measurements EX1200 Series Maintenance 119 VTI Instr
24. F firmware upgrade web page sse firmware VetslOD frequency and period measurements aperture CONT barco DMM connections reciprocal counting technique eene front panels 3U mainframes coe er ete rere he 19 I IEEE 1588 time o eret one 106 index web page installation location 33 installation options 51 integration time 28 121 124 IP addt S8 c i met e He 106 J Javaccac ie sc Re He ORC co e ecd 140 L LAN Configuration Initialize eene 67 129 LAN Instrument Connection and Upgrade utility 54 105 LED indicators limit checking cio RUE RR ee ENS EXTalafti POR EHE ADIRI LXI class LXI Identification web page 135 LXI synchronization web page eene 133 LXI Trigger Bus 64 RE 106 55 130 maintenance 146 DMM removal replacement 146 fuse replacement 146 maximizing performance 230 MD 28 cleaning protocols ein 157 N network configuration sesenta 55 Iesetting See LAN configuration initialize troubleshooting 2 56 web page 129
25. FIGURE 7 8 DMM CONFIGURATION MANAGER e Name Allows the user to define a name for the DMMs configuration Once defined this name appears in the DMM Configs section of the Sweep Wizard e Function Indicates the DMM function which will be used with the current setting Functions include DC Volts AC Volts DC Current AC Current 2W Ohms 4W Ohms Frequency Period and Temperature Option Indicates whether the HIZ or 10 M Q mode of operation has been selected e Range Indicates the voltage range the DMM will use when a measurement is taken in this configuration The ranges are Auto Range On Auto Range Off Auto Range Once 100 mV 1 V 10 V 100 V and 300 V The Auto Range function allows the DMM to select the range automatically as a function of voltage applied to the channel When Auto Range Off is selected the EX1200 will use the range last range to which the EX1200 was set e Digits Indicates the number of significant digits the DMM will use during the measurement Aperture Time Indicates the time in seconds over which the DMM will integrate the analog inputs The longer the time the more accurate the reading Valid values vary depending on the power line frequency and the mode setting For 60 Hz PLF 0 00167 0 0167 0 167 and 1 67 For 50 Hz PLF 0 0002 0 002 0 02 0 2 and 2 0 For Frequency and Period modes 0 0014 0 014 and 0 14 Auto Zero Indicates whether auto zero is on or off Auto zero removes the inte
26. MAC address If this address is already in use the unit will attempt to obtain other IP addresses in a pseudorandom fashion until it finds one that is available To illustrate the Auto IP mechanism Table 2 1 lists the Auto IP default address for some example MAC addresses 00 0D 3F 01 00 01 169 254 1 1 00 0D 3F 01 01 01 169 254 1 1 00 0D 3F 01 A3 28 169 254 163 40 00 0D 3F 01 FE FE 169 254 254 254 00 0D 3F 01 FF FE 169 254 254 254 TABLE 2 1 AUTO IP DEFAULT ADDRESS ASSIGNMENT If a static IP address assignment is preferred one can be optionally assigned via the embedded web page interface This is done by clicking the Network Configuration link disabling DHCP and then assigning a static IP address For more information see Network Configuration in Section 7 However a much more convenient and recommended way to obtain the benefits of a static IP address is to employ DHCP but assign the instrument a reserved IP address in your company s DHCP server configuration This reserved address linked to the EX1200 s MAC address on the DHCP server would be assigned to the EX1200 at power up initialization without having to manually set it on the EX1200 The DHCP server configuration provides a centralized controlled database of assigned IP addresses preventing accidental assignment of the same IP address to multiple instruments Consult your company s Information Technology department for assistance VXI 11 Devi
27. The buttons and menus available in the wizard provide the following functions Sweep Wizard Filter channels by available function All Channels W only show configs using this function Enabled Channel DMM Config Break Before Make pedi 851 peuu2 fv Ww J E pius pev _ E ME ON N uN H1 6 M E 11 oO a E iM 11ICH1 EM 1 ad Enable selected ivi omaa d Configure selected Vv Enable BBM vi Disable BBM Vv FIGURE 7 7 EX1200 SWEEP WIZARD e Function drop menu By selecting a specific function from this drop menu the Sweep Wizard will only show channels that are capable of performing the selected DMM function e Only show configs check box When selected the Sweep Wizard menu will only display DMM configuration that use the function selected by the Function drop menu e Enabled Channel The Enabled checkboxes allow the user to select the Channels that will be connected to the backplane for each sweep DMM Config This drop menu allows the user to select one of the predefined DMM configurations See the DMM Configuration Manager for more information on defining Note if no DMM configurations are saved an Error will be reported EX1200 Series Maintenance 109 VTI Instruments Corp
28. When the last step in the scanlist is completed Scan Complete is asserted Use these options to define which trigger lines to assert for these events None When selected no event is performed upon completion of the scan step or scanlist LXI0 LXI7 Triggers the selected LXI Trigger bus line at the end of the scan step or scanlist LANO LAN7 Triggers the selected LAN event at the end of the scan step or scanlist DIOT Triggers the selected digital I O channel at the end of the scan step or scanlist e Scan Count Indicates the number of times the full scan list will be run This value must be between 1 and 2 147 483 648 If set to 0 or a negative number the arm count is infinite 112 EX1200 Triggering www vtiinstruments com e Scan Delay Indicates the minimum time to complete each scan step For instance if this is set to 1 0 and a scan step completes in only 0 75 seconds the scanner waits another 0 25 seconds before advancing to the next step e Abort This button causes advancement of the current scanlist to be stopped allowing configuration to be changed or a new scanlist to be defined e Send Software Trigger This button sends a software trigger signal to the device If Software is the selected Scan Trigger or Step Trigger this will cause the device to begin the next scan step or scanlist iteration respectively Results Field Below the scanner configuration fields a Results field is provided that
29. e Break Before Make checkbox When selected the scanner ensures that channel selected has completely settled before it connects to another channel Deselecting this option increases scan speed but introduces the of input channels potentially being shorted to each other for a short time Notes on Web Page Use If a DMM configuration cannot be found in the Sweep Wizard drop menu it may be because the channel is not capable of that type of measurement Use the Filter channels by available function drop down to show only channels capable of a particular DMM function Also note that multiple channels can be configured simultaneously using Shift Click or Ctrl Click To select multiple consecutive channels select the first channel in the series then Shift Click the last channel that will have the same configuration To select non consecutive channels use Ctrl Click to select each channel Once all channels have been selected right click on one of the selected channels to see the options provided in Figure 7 7 DMM Configuration Manager Clicking on the DMM Configs button will open the DMM Configuration Manager From here up to 64 different DMM configurations can be defined and used in conjunction with the sweep phase of the scanlist Configuration 2 222 222 222 Function Option Range Digits Aperture Time Auto Zero Trigger Delay Gain Offset DCV DC volts HIZ 10v 3 5 0 Off 0 0 Cap
30. flat head Phillips stainless steel screws P N 37 0114 025 Install the rear mating bracket P N 41 0493 007 on the right side of the EX1200 where the front mating bracket was installed previously using two 2 4 40 x 0 187 pan head Phillips Zinc screws P N 37 0011 018 Connect the two EX1200s by installing two 2 4 40 x 3 8 flat head stainless steel Phillips screws P N 37 0100 037 through the right EX 1200 capture the front mounting bracket Then use two 2 4 40 x 0 187 pan head Phillips Zinc screws P N 37 0011 018 to connect the rear mating bracket to the right EX1200 Place the EX1200 in the desired rack slot and secure the front rack ears with hardware provided with the rack Once the front bracket are secured slide the rear support brackets so that they can be attached to the rack as well After securing the rear support brackets tighten the screws and KEPS nuts installed in step 4 40 EX1200 Series Preparation for Use www vtiinstruments com FIGURE 2 7 DUAL HALF RACK INSTALLATION DIAGRAM EXPLODED FRONT VIEW EX1200 Series Preparation for Use 41 VTI Instruments Corp EX1206 EX1266 MAINFRAME INSTALLATION OPTIONS EX1206 and EX1266 have three options which can installed prior to installation e Tabletop Installation Option P N 70 0361 100 Rack Ear Installation Option P N 70 0361 101 Rackmount Installation Option P N 70 0361 102 Tabletop Installation Option P N 70 0361 100
31. p Repeating Pulse PWM 3 T FIGURE 4 10 CREST FACTORS FOR COMMON WAVEFORMS Crest factor related errors are specified in the DMM specifications on page 19 The specifications are for non sine waveforms that are above 100 Hz when the Low filter 3 Hz is used The measurement error can be determined for non sinusoidal input using the deratings specified in the datasheet Loading Errors mode the input of the EX1200 DMM appears as a 1 resistance in parallel with 100 pF of capacitance The cabling used to connect the signals and the switch module used to route the signals to the multimeter also add additional capacitance and loading When connected to high output impedance sources like high voltage probes an error will be present as the result of loading on the source This error can be calculated using the following equation 1 IMQ 2 1 Error 100 1 Where R source resistance f input frequency C input capacitance 100 pF plus cable capacitance plus switch capacitance 84 Basic EX1200 DMM Operation www vtiinstruments com Low Level AC Voltages and Shielding When measuring ac voltages less than 100 mV be aware that these measurements are especially susceptible to errors introduced by external noise sources Exposed unshielded cabling acts as an antenna and the EX120
32. 0482 011 5 10 Screw 6 32 x 4 F H Undercut Phillips Zinc 37 0114 025 6 2 Screw 6 32 x 3 8 Pan Head Phillips Sq Cone SEMS Zinc 37 0028 037 7 6 Screw 8 32 x 3 8 Pan Head Phillips Sq Cone SEMS Zinc 37 0073 037 8 4 Nut Hex KEPS 8 32 Steel Zinc 37 0200 832 Assembly Procedure 1 Place the chassis a protected work surface with its input connectors facing front 2 Using a 2 Phillips screwdriver install the rack ears P N 41 0482 009 and 41 0493 011 on the front of the EX1200 using five 5 6 32 x 3 8 flat head Phillips stainless steel screws P N 37 0114 025 for each rack ear Note that the Optional Mounting Locations in Figure 2 6 allow the EX1200 to be installed in a rack either flush or recessed 3 Next attach the unit support brackets P N 41 0482 010 to the EX1200 using two 2 6 32 x 3 8 pan head Phillips SEMS screws P N 37 0028 037 for each bracket see Figure 2 6 4 Place the rear rack support brackets P N 41 0482 011 on the inside of the unit support brackets installed in step 3 and loosely secure them using two 2 8 32 x 3 8 pan head Phillips SEMS screws P N 37 0073 037 and two 2 KEPS hex nuts P N 37 0200 832 per bracket Loosely installing the hardware will allow the rear support bracket to adjust to the proper length once installed in a rack 5 Place the EX1200 in the desired rack slot and secure the front rack ears with hardware provided with the rack Once
33. 200 6216 Switch Configuration Slot 5 1200 3001 Switch LXI LX Synchronization Slot 7 ex1200 2008h Switch fip LXI identificati Iac Slot 9 1200 5002 Switch SE IZ SZ Blink LAN indicator Slot 11 ex1200 2002 Switch change Password Slot 13 1200 5001 S zx lot 13 ex1200 5001 Switch Upgrade Preset Slot 15 ex1200 3048s Swit Slot 17 ex1200 dmm DMM FIGURE 9 8 INSTRUMENT SFP SELECTION PAGE 3 At the top of the DMM s soft front panel click the Calibration button Basic Settings Trigger Settings FIGURE 9 9 CALIBRATION TAB 4 From the Calibration Functions section of the Calibration page select Calibration from the drop down menu Calibration Functions Calibration Calibration Verification Simple Verification DC Voltage DC Current AC Voltage CE AC Current CE FIGURE 9 10 CALIBRATION FUNCTION SELECTION 144 EX1200 Series Maintenance www vtiinstruments com 5 In the Reference Instruments section select the appropriate instrument available on the GPIB LAN network for the calibrator external DMM and function generator This information can also be obtained from LAN GPIB Gateway s web page Refer to the LAN GPIB Gateway s user s manual for more information Reference Instruments Calibration Data Device Drop Menu Dataset Load Data
34. 45 0 0600 0 0900 3 60 3 60 V 300 V 100 uV gt 45 Hz 20 kHz 0 060090 0 0900 0 99 V 0 99 V gt 20 kHz 50 kHz 0 1200 0 1500 3 75 3 75 V gt 50 kHz 100 kHz 0 6000 0 2400 3 75 V 3 75 V 2100 kHz 300 kHz 5 0000 1 5000 0 2 Rdng 0 02 Rng C Specifications are for sine wave input gt 5 of range for 100 mV 100 V ranges gt 15 for 300 V range with Low AC filter selected Volt hertz product is limited to 1 5x10 V Hz Over range 20 beyond range except 300 V range Input Impedance 1 MQ 2 parallel with lt 100 pF 22 EX1200 Series Introduction www vtiinstruments com AC VOLTAGE 5 1 DIGITS 1 YEAR ACCURACY RANGE RESOLUTION FREQUENCY 0 C To 55 C RANGE READING ACCURACY READING ACCURACY 20 Hz 45 Hz 378 uV 2 28 mV 545 Hz 100 HZ 198 pV 1 23 mV an SY 198 0 84 mV 520 kHz 100 kHz 285 uV 2 85 mV 20 Hz 45 Hz 2 28 mV 22 8 mV 545 Hz 100 HZ 1 23 mV 12 3 mV EY gt 100 gt 20 09 mV 0 84 mV dud 8 4 mV 520 kHz 100 kHz 2 85 mV 28 5 mV 20 Hz 45 Hz 22 8 mV 228 mV gt 45 Hz 100 HZ 123 mV 123 mV F100 20 kHz lt 3V 84 mV SEV 84 mV 520 kHz 100 kHz 28 5 mV 285 mV 20 Hz 45 Hz 228 mV 3 63 V 545 Hz 100 HZ 123 mV 1 83 V HY 100Hz 20kHzg
35. 7 18 For more information please refer to LXI Standard Revision 1 2 Section 9 Rule 9 6 and IEEE 1586 2002 Precision Clock Synchronization Protocol for Networked Measurement and Control Systems EX1200 Series Maintenance 127 VTI Instruments Corp Corporation 561200 Windows LE betes ex 123234 locallca bin syn ie Favorites BER VTI Instruments Corporation EX1200 LXI Synchroniz PTP Grandmaster Clock MAC 00 30 43 09 18 86 SFP Soft Front Panel PTP Parent Clock MAC 00 30 43 09 8 86 Version Network Configuration 2 Current PTP time 948340 700899000 Time Configuration Current Local Time Sun Jan 11 23 25 40 1970 Don LXI Synchronization Grandmaster Traceability to UTC ID LXI Identification IEEE 1588 Domain 3 2842 Blink LAN Indicator e a Change Password 1 6 1 5 1 3 1 2 LX 1 0 Disabled Disabled Disabled Disabled Disabled Disabled Disabled Disabled Upgrade Wired OR Bias Reset W Reboot FIGURE 7 18 LXI SYNCHRONIZATION WEB PAGE IEEE 1588 Parameters PTP Grandmaster Clock MAC indicates the MAC address of the device on the network to which all other IEEE 1588 compliant devices are synchronized PTP Parent Clock MAC indicates the MAC address of the device to which
36. Configuration Hostname ex 122764A Network Configuration p Static IP Configuration LXI LXI Synchronization wd m ID XI Identification FIGURE 2 17 EX1200 SET TO USE AUTO IP Set the EX1200 to Static IP 1 Disconnect all network connections from the PC except for the connection between the PC and the EX1200 2 Apply power to the EX1200 and wait for the LAN LED to turn green 3 Discover EX1200 using LXI Discovery Tool as described in the Web Page Operation in Section 7 The steps taken previously should ensure that discovery works 4 Once connected to the embedded web interface click on the Network Configuration link in the command menu 5 Select the Static checkbox in the IP Address Source field and ensure that DHCP and AutoIP are not selected 6 Inthe IP Address field enter an appropriate IP address for the EX1200 Use the IP address obtained the Determine PCs Network Settings step to determine the network address The network address is the first three digits of the IP address 10 1 0 in the example provided The last digit of the IP address the node is a number 0 through 255 that is not currently assigned to any other device on the network Ensure that a unique IP address is assigned to the EX1200 by consulting a network administrator 7 Inthe Subnet Mask field enter the subnet mask in the Determine PCs Network Settings step 8 Inthe Gat
37. EX1200 Time Configura fi O Tools EX1 200 Time Configuration Instruments us Time Configuration 2 SFP Soft Front Panel Time Source 00 0 Network Configuration north america pool ntp org lime Configuration LXI Synchronization y Current Time Fri Feb 5 17 46 58 2010 282 Blink LAN Indicator SNIP 5 Change Password Upgrade Reset Reboot FIGURE 7 17 SNTP CONFIGURATION PAGE Using the Manual Time Setting If a PTP master or an SNTP server is not available time can be configured manually by the user by selecting Manual in the Time Source drop menu Note manually set time sources are not very accurate and that this configuration should only be used if timestamp accuracy is not vital to a measurement To use a manually set time source 1 Select Manual from the Time Source field The page will change so that it can be configured 2 Select the Set Time checkbox 3 Enter the required data into the Date and Time fields that appear Note that the Time field should be entered using the 24 hour format 4 Click the Submit button to begin using the manual time source LXI SYNCHRONIZATION The LXI Synchronization status page provides information about the EX1200s synchronization characteristics Note that PTP must be selected in the Time Configuration web page in order for this page to be populated as see in Figure
38. For more information on controlling the scanner programmatically please refer to the VTEXScanner Programmer s Manual included with the EX1200 system Scanner is only available when a switch card is installed in an EX1200 series mainframe Tab Bar The general purpose of the Tab bar located at the top of the scanner SFP is to allow the user access to all the components of the EX1200 system to which they are connected e Device Information When clicked a screen appear that provides SFP and firmware version information for the scanner The user is also provided information for each card that has been installed in the EX1200 system This information includes the instrument s model number and its hardware version FIGURE 7 5 SCANNER SOFT FRONT PANEL 106 EX1200 Triggering www vtiinstruments com Slot x One Slot tab will appear for each switch instrument installed in the EX1200 system This provides the ability to monitor the state of the relays or control them directly When a plug in card is initially accessed from the Tab bar the switch s SFP appears in Monitor Only mode To control the plug in card simply click on the Control Mode button and select either the Synchronous Mode or Asynchronous Mode These SFPs are also available as a standalone via the Soft Front Panel main page Please refer to Switch Soft Front Panels in this section for more information rega
39. HI S Input Sense LO DMM Front Panel FIGURE 4 14 DMM THERMOCOUPLE CONNECTIONS 92 Basic EX1200 DMM Operation www vtiinstruments com Programming Interface VTEX DMM and VTEX Scanner drivers provide the access to the features of EX1200 DMM Refer to the below functions of the driver in its documentation IVTEXDmmTemperature Interfac IVTEXDmmTemperature Thermocouple Property Using an RTD RTDs are resistance based passive transducers where the output resistance varies with changes in temperature This non linear relationship is characterized resulting in the standardization of RTDs As such the EX1200 supports several types of RTDs allowing for the automatic conversion of resistance readings to temperature values RTDs supported include PT100 default D100 F100 PT385 and PT3916 Custom RTDs are supported as well Simply input the nominal resistance at 0 C temperature a alpha B beta delta characteristics for the RTDs being used The DMM can measure RTDs with values between 49 to 2 1 Ro is typically the numeric value of the RTDs name for example a 100 RTD has an of 100 Q a PT385 has Ro of 385 The temperature resistance correlation for an RTD is calculated using the Callendar Van Dusen equations Two equations are used one for temperatures between 200 C and 0 C and one for between 0 C and 630 C For T lt
40. Performing verification before and after calibration can provide the user valuable information regarding the stability of an instrument Prior to performing verification ensure the following e The EX1200 DMM device under calibration the function generator the DMM and the calibrator amplifier must all be powered up for a minimum of one hour before calibration Agilent 3458A Auto Cal procedure must be performed prior to verification e The 5700A s Cal Zero procedure must be performed prior to verification e Ensure that the I FUSE is installed in the EX1200 DMM Verification Procedure 1 Follow steps 1 through 3 in the Performing Calibration section 2 From the Calibration Functions section of the Calibration page select Verification from the drop down menu 3 Follow steps 5 through 9 in the Performing Calibration section 4 When the test is finished a popup window will tell you if there were any failures Save the test logs and test results 5 Copy the test logs and test results Use these values to make the calibration report EX1200 Series Maintenance 145 VTI Instruments Corp 146 EX1200 Series Maintenance www vtiinstruments com APPENDIX A ONBOARD MEMORY LISTINGS AND CLEARING PROCEDURES The following table provides information regarding memory contained in the EX1200 mainframes and plug in modules Protocol for clearing the memory is al
41. Phillips SEMS screws P N 37 0028 037 for each bracket see Figure 2 11 4 Place the rear rack support brackets P N 41 0494 021 on the inside of the unit support brackets installed in Step 3 and loosely secure them using two 2 8 32 x 3 8 pan head Phillips SEMS screws P N 37 0073 037 and two 2 KEPS hex nuts P N 37 0200 832 Loosely installing the hardware will allow the rear support bracket to adjust to the proper length once installed in a rack 5 Place the EX1200 in the desired rack slot and secure the front rack ears with hardware provided with the rack Once the front bracket are secured slide the rear support brackets so that they can be attached to the rack as well After securing the rear support brackets tighten the screws and KEPS nuts installed in Step 4 50 EX1200 Series Preparation for Use www vtiinstruments com FIGURE 2 13 RACKMOUNT HARDWARE INSTALLATION DIAGRAM EXPLODED FRONT VIEW BLANKING PANEL When a chassis is not fully populated blanking panels P N 41 0472 012 should be installed into the empty slots to maintain proper air flow through the chassis Blanking panels should be ordered with the mainframe if empty slots are anticipated CONNECTING DISCONNECTING LINE POWER When connecting the power cord to an EX1200 series mainframe there should be no connections to the front panel of any plug in cards that may be installed and the power switch at the rear of the mainframe should be in OFF posi
42. Self radio button in the Target field The EX1200 then becomes the PTP master clock While this ensures measurement synchronicity between the units that to this clock the overall timestamp accuracy is not as accurate because of the time s hand set nature For higher overall timestamp accuracy use a PTP master clock that is synchronized to a global time source like such as GPS Using SNTP NTP Time By selecting SNTP from the Time Source menu the EX1200 can be synchronized with an SNTP server The Time Zone drop menu allows the user to select the local time zone SNTP or NTP Network Time Protocol servers are specified in the NTP Servers field by IP address or hostname as shown in Figure 7 17 Once configured the user must click Submit in order for the changes to take effect To configure the EX1200 to use NTP time as its clock source 1 Select SNTP from the Time Source field The page will change so that it can be configured 2 Add Remove NTP servers use the appropriate buttons until the EX1200 is configured to communicate to the desired server s 3 Click the Save button to save the server configuration 4 Click Submit to begin using NTP time 126 EX1200 Triggering www vtiinstruments com WEIT tr uisuts Corporation 412400 Sins Configuration Windows Internet 10121 Ge EB Htio ex 122749 local cai bin time coi Ba 9 x uve search eT dp Favorites VTL Instruments Corporation
43. THERMOELECTRIC VOLTAGES Measuring Voltages with High Output Resistance Source loading errors occur when the output resistance of the DUT is a significant percentage of the DMM s own input resistance r ues TUE pes c me HI Vs Ideal DUT Voltage Rs Rs DUT Source Resistance 1 Ri Multimeter Input Resistance Ri 7 10 MQ or 10 GQ DMM Error 100 x Rs LO Q Rs Ri FIGURE 4 5 ERROR CALCULATION FOR HIGH OUTPUT RESISTANCE LOADS To reduce the effects of source loading error and to minimize noise pickup the input resistance of the DMM can be set to HIZ mode gt 10 for the 100 mV dc 1 V dc and 10 V dc ranges The input resistance is maintained at 10 MQ for the 100 V dc and 300 V dc ranges Common Mode Rejection An ideal DMM would be floating and isolated from earth referenced circuits In practice though there is a finite resistance between the DMM s input LO terminal and earth chassis ground see Figure 4 6 This can cause errors when small voltages which are actually floating relative to earth ground are measured as for a photovoltaic cell for example gt HO VresT Ve Float Voltage I DMM DUT Source Resistance Imbalance Rs Multimeter Isolation Resistance e LOC Error v Vx Rs gt 1000 Re Ri J FIGURE 4 6 COMMON MODE REJECTION ERROR 80 Basic EX120
44. TRIG 6 12 RP_TRIG_P7 25 RESERVED 13 RP_TRIG_N7 g Bh RP d 6 6 NOE TABLE 3 3 TRIGGER BUS CONNECTOR PIN ASSIGNMENT For proper operation each trigger bus connector must be populated with either a cable or a termination Since the two connectors per unit are in parallel they are electrically equivalent with respect to receiving the cable or termination VTI Instruments P N 70 0322 000 provides two 62 EX1200 Series Basic Mainframe Operation www vtiinstruments com termination assemblies which is sufficient to connect any number of instruments since a termination is only needed at each end An example of a three unit trigger bus installation is shown in Figure 3 1 MM VTI Instruments LMP 0 0 0 0 5 Terminators FIGURE 3 1 TRIGGER BUS CABLING EXAMPLE As a general purpose output device each Trigger Bus channel can be independently programmed with regards to its output functionality and its static level to assume when enabled as an output When not enabled as an output a channel becomes tri stated preventing conflict with other potential voltage drivers Regardless of output functionality each channel provides constant input functionality That is the input level on each channel can be accessed without a specific enable function call Moreover the base functionality of the Trigger Bus channels is not affected by triggering scanning or any other instrument
45. The different LEDs states are illustrated in Table 3 3 LED Activity amp Color Description Solid green The device clock is an IEEE 1588 slave Flashing green once second The device clock is an IEEE 1588 master 1588 Flashing green twice second The device clock is an IEEE 1588 grandmaster Solid red An IEEE 1588 fault has occurred No activity color The device clock is not synchronized Solid green Normal operation LAN Flashing green The device has received a device identification command Solid red A LAN fault has been detected Solid green The devices power supplies are operating normally PWR Solid red The power supply is not functioning normally Solid red for 5 s then solid green Condition normally occurs at power up TABLE 3 3 EX1200 LED STATES Depending on the mechanism used to communicate with the EX1200A locks can be established to prevent any unintentional use of the mainframe while it is in use When using the API of any driver except for VTEXSystem a lock is established when they are initialized The user does not have to request a lock If the lock fails the initialize call will return an error and the driver will not be useable Because the VTEXSystem driver capabilities may be needed by one or more driver sessions no lock is established by this driver When the mainframe is accessed via the SFP a lock can be established for each SFP by clicking on the Lock button SF
46. VTI by obtaining an RMA number Fees for take back and recycling will apply if not prohibited by national law lii Follow these precautions to avoid injury or damage to the product Use Proper Power Cord The power cable provided with this instruments meets the required regulatory and statutory safety standards as indicated by this product s declaration of conformity VTI recommends that the power cord provided be used with the instrument that it is provided with If a different power cord is must to be used however it is the responsibility of the user to select a power cord that meets any and all regulatory and statutory requirements for their industry and country Use Proper Power Source To avoid electrical overload electric shock or fire hazard do not use a power source that applies other than the specified voltage The mains outlet that is used to power the equipment must be within 3 meters of the device and shall be easily accessible User Proper Fuse To avoid fire hazard only use the type and rating fuse specified for this product Power Consumption Prior to using EX1200 series plug in modules it is imperative that the power consumption of all modules that will be installed in the EX1200 Series Preface 7 VTI Instruments Corp mainframe be calculated for all power supply rails The required information can be found in Appendix B of the EX1200 Series User s Manual P N 82 0127 000 Failure to do so may result in
47. Voltage Reading Rates tables below Max internal trigger rate 2000 s Max ext trig rate to memory 2000 s Auto zero off trigger and sample delay 0 0 01 PLC EX1200 Series Introduction 25 VTI Instruments Corp FILTER SETTING READING RATE LOW 3 readings second Auto zero ON sample delay 10 PLC MEDIUM 20 readings second Auto zero ON sample delay 10 PLC HIGH 2000 readings second Auto zero off sample delay 0 0 01 PLC CONNECTOR INFORMATION TYPE 5 banana jacks Connector pin locations and signals can be found in Figure 4 1 26 EX1200 Series Introduction www vtiinstruments com EXPLANATION OF SPECIFICATIONS This section provides explanatory notes for EX1200 DMM specifications that may be misunderstood Memory This is the internal FIFO buffer memory of the EX1200 mainframe This does not include any buffer memory that the individual plug in cards may have Some plug in cards such as the EX1200 7500 EX1200 3608 and EX1200 7416 have onboard buffers that allow them to perform high speed operations Saved States The DMM can store its configurations inside a non volatile memory Recalling these saved states directly from the memory saves programming effort and will speeds up the scanning process Measurement Integration Time Unlike data acquisition instruments that measure instantaneous values the EX1200 DMM uses an integrating ADC for measurem
48. X Y where X and Y are the second to last and last octets of the device s MAC address However X will be set to 1 if itis 0 in the MAC address and to 254 if it is 255 in the MAC address for conformance with the Auto IP specifications If this address is already in use the unit will attempt to obtain other IP addresses in the 169 254 16 range in a pseudorandom fashion until it finds one that is available To illustrate the Auto IP mechanism Table 7 1 lists the Auto IP default address for some example MAC addresses MAC Address Auto IP Default Address 00 0D 3F 01 00 01 169 254 1 1 00 0D 3F 01 01 01 169 254 1 1 00 0D 3F 01 A3 28 169 254 163 40 00 0D 3F 01 FE FE 169 254 254 254 00 0D 3F 01 FF FE 169 254 254 254 TABLE 7 1 AUTO IP DEFAULT ADDRESS ASSIGNMENT If a static IP address assignment is preferred one can be optionally assigned via the embedded web page interface This is done by clicking the Network Configuration link disabling DHCP and Auto IP enabling Static and then assigning a static IP address subnet mask and gateway address and optionally up to three DNS servers see Figure 7 15 However a much more convenient and recommended way to obtain the benefits of a static IP address is to employ DHCP but assign the instrument a reserved IP address in your company s DHCP server configuration This reserved address linked to the EX1200 s MAC address on the DHCP server would be assigned to the E
49. and period except for temperature The default value for gain and offset 1 and 0 respectively 78 Basic EX1200 DMM Operation www vtiinstruments com DC VOLTAGE MEASUREMENTS DC voltage DCV measurements are one of the simplest measurements to take with a DMM The DMM measures the average voltage value of the connected signal differentially This means that floating signals can be measured as well as signals containing large common mode voltage offsets refer to the 1200 Series DMM Specifications for maximum signal details When mode there are several options that can be configured as discussed below Sense HI Input Input LO Sense LO DMM Front Panel DC Voltage Source Input Resistance Selection On the 100 mV 1 V and 10 V ranges the user has the option of either gt 1 GQ or 10 MQ input impedance The gt 1 GQ setting is appropriate when the device being measured requires a very light load but this setting can cause measurement errors when high parasitic capacitance exists on the input path This capacitance can exist when long shielded cables are used or many multiplexer cards are connected to the same bus This capacitance must be sufficiently discharged before the measurement is taken or the capacitance s charge will be included in the measurement The 10 MQ input impedance selection provides this discharge path unless the very high input impedance is required it is
50. choose which edge polarity will be accepted as the arm or trigger source or which will be asserted as a trigger output Trigger Properties Scan Trigger In Immediate Step Trigger In mmediate 2 v Step Complete Out Scan Complete Out None Scan Count Scan Delay Send Software Trigger FIGURE 7 9 RISE FALL OPTION FOR HARDWARE EVENTS If Alarm0 is selected as either the Arm or Trigger source a Configure button will appear Clicking on this button provides the following configuration options e Time Indicates the IEEE 1588 time at which the alarm will begin firing e Now button Clicking this button retrieves the current IEEE 1588 time from the EX1200 system and places it on the Time field e Period Indicates the time in seconds to wait between alarm firings e Repeat Indicates the number of times the alarm will fire A 0 in this field results in infinite firing Trigger Properties Scan Trigger In ALARMO vj Step Trigger Step Compl Scan Compl Time FIGURE 7 10 ALARM CONFIGURE OPTIONS Notes on Web Page Use To create a trigger that repeats at a specified time interval set one of the trigger inputs to ALARMO Then configure the alarm with Time and Repeat set to 0 Now when Period is defined an infinitely running timer is created which triggers at the defined period e Step Scan Complete Out When each scan step each row of the scanlist table is completed Step Complete is asserted
51. connected to the network to which the device is connected and typically occurs when the NIC is connected directly to the instrument The following process can be used to ensure proper functionality 1 2 Navigate to Start Settings Network Connections Disable all network interfaces except the one that is connected to the EX1200 mainframe This is done by right clicking on the interface then selecting Disable Open the web page of the EX1200 mainframe Click the IP Configuration link A prompt may appear to log into the EX1200 mainframe Unselect DHCP and AutoIP and ensure that Static is selected Enter an IP address into the IP Address field Although any valid network IP address can be used 192 168 1 2 is used in this example For more information on valid IP addresses please consult with an IT administrator Set the Subnet Mask For this example the subnet mask is 255 255 255 0 EX1200 Series Preparation for Use 57 VTI Instruments Corp Vii instroments Corporation 200 Networks Configuration Windows Intennet Explores Go htt ex 123234 local coi bin network car R x di Favorites Instruments Corporation EX1200 Network Confi mae SFP Soft Front Panel x 346 Network Configuration EX1266 123234 J Time Configuration Caniguration LXI Synchronization
52. displayed on the left hand side of every internal web page The entries on the command menu represent three types of pages Status This type of page performs no action and accepts no entries It provides operational status and information only The Index page is an example of a status page Action This type of page initiates a command on the instrument but does not involve parameter entry The Reboot page is an example of an action page Entry This type of page displays and accepts changes to the configuration of the instrument The Time Configuration page is an example of an entry page 104 EX1200 Triggering www vtiinstruments com Use of the entry type web pages in the EX1200 are governed by a common set of operational characteristics e Pages initially load with the currently entered selections displayed e Each page contains a Submit button to accept newly entered changes Leaving page before submitting any changes has the effect of canceling the changes leaving the instrument in its original state e Navigation through a parameter screen is done with the Tab key The Enter key has the same function as clicking the Submit button and cannot be used for navigation VTI Instruments Logo The VTI Instruments logo that appears on the upper left of all EX1200 web pages is a link to the VTI Instruments corporate website http www vtiinstruments com SOFT FRONT PANEL MAIN PAGE The Soft Front Panel page displays a lis
53. frequency measurements is 3 Hz to 1 5 MHz and making the reciprocal period measurements 660 ns to 0 33 s 88 Basic EX1200 DMM Operation www vtiinstruments com The resolution of frequency measurements is set from one of the following options Slow Mode Medium Mode Fast Mode and User Mode Table shows the settings used for each mode Mode Digits Aperture Gate Time Slow 6 140 ms Medium 5 14 ms Fast 4 1 4 ms User 4 515 or 642 See Table 4 7 TABLE 4 6 FREQUENCY RESOLUTION MODES When in User mode the following limits must be observed when setting the aperture time User Mode Resolution Hz Aperture Time 5 0 0025 33 33 6 6 4 167e 8 ls TABLE 4 7 RESOLUTION AND APERTURE LIMITS FOR USER MODE Frequency and period measurement rates are dictated by the aperture time The settling time trigger delay is the same as the ACV slow mode setting Note that the maximum measurement time is no more than the following Measurement Time Aperture Time 2T where T period of input waveform Also note from Table 4 6 that aperture and resolution have an inverse relationship and can be interchanged using the following formula 1 Aperture Time seconds x 4x 10 Econo esolution Basic EX1200 DMM Operation 89 VTI Instruments Corp Connecting to the DMM For front panel measurements the ac signal should be connected to the HI and LO input j
54. gateway 6 Connect Fluke 5700A Multifunction Calibrator with 5725A amplifier 7 Power up all the instruments 140 EX1200 Series Maintenance LAN GPIB Gateway LAN Port Ethernet Ethernet Cable Switch www vtiinstruments com Calibrator GPIB Cable GPIB Port GPIB Port Interconnect Cable GPIB Cable Daisy Chain g ca E GPIB Cable Daisy Chain GPIB Port Function Generator FIGURE 9 4 INSTRUMENT CONNECTIVITY FOR EX1200 DMM CALIBRATION Once the standards have been connected the following connections should be made to the EX1200 8 Connect the EX1200 LAN port to the Ethernet switch using an Ethernet cable 9 Connect the function generator external DMM and calibrator to the DMM as shown in Figure 9 5 using the EX1200 DMM calibration verification cable VTI P N 52 0807 000 Output HI Output LO Sync HI Sync LO Function Generator Input HI Input LO Sense HI Sense LO External DMM Input Output Input Output Input HI Output LO Input LO Sense HI Sense LO Sense HI Sense LO Calibrator EX1200 DMM FIGURE 9 4 EX1200 CONNECTIVITY TO REFERENCE STANDARDS CONNECTING TO THE EX1200 There are three ways to connect to the EX1200 using the IP address of the EX1200 using Bonjour for auto discovery or using the Agilent Connection Expert ACE For more information on obtaining the EX1200 s IP address and using this as the connection
55. measurements using an external or fixed reference a reference temperature must be stored from a previous RTD or thermistor reading To do so set a multiplexer card channel up for an RTD thermistor measurement and then set this measurement as the external reference When a measurement is initiated on this channel it will be handled as an external reference and the temperature will be stored in the volatile memory of the reference register Any thermocouple measurements made after the reference temperature has been defined will use this value The external reference value will be used until another external reference measurement is made or until the mainframe is powered off Fixed temperature references typically provide the best accuracy provided the fixed temperature is maintained at a constant temperature Although the internal isothermal block references of the provided by the EX1200 series terminal blocks provide less accuracy than a fixed reference it does provide the advantage of requiring no external wiring and simplifying test setup Note that the fixed reference is supported using the EX1200 DMM To use external reference the scanner driver must be used Connecting to the DMM Any thermocouple can be connected to the front panel terminals of the DMM using suitable connectors Though this method is not preferred in fixed installation this can be used to quickly make readings and troubleshoot field wiring Thermocouple Sensor Sense
56. method refer to the Network Configuration discussion in Section 2 To connect to the EX1200 via Bonjour refer to Section 7 Web Page Operation EX1200 Series Maintenance 141 VTI Instruments Corp To use ACE use the following steps 1 Open ACE and click on the Add instrument toolbar 2 Select Add LAN instrument on LAN and then click OK ACE will search the network and list the LXI instruments connected to the LAN Add Instrument the interface on which to manually ac Interface Name Status Description Add LAN instrument on LAN LAN interface Remote GPIBO Available Remote GPIB via E5810 or Re USBO Unavailable USB interfaces FIGURE 9 5 ADD INSTRUMENT INTERFACE 3 To simply view the EX1200 web page click on its webpage button If desired the EX1200 can be added to ACE as a LAN instrument by enabling the appropriate Select checkbox and then clicking OK Instrument Select Address IP MAC Host Description Web Page 10 30 1 7 EX1206 122752A Web Page ex 122752A local 10 30 1 43 1268 124654 Web Page ex 124654 local 10 30 1 14 1016 122033 Web Page EX1016A 122033 local FIGURE 9 6 ACCESSING THE EX1200 VIA ACE LOGIN INTO SFP EX1200 calibration is performed using the SFP web interface If a password has been created for the EX1200 mainframe accessing an action or entry page for the first time during a session will caus
57. mm 19 49 495 046 mm EX1267 68 69 Top View 05020050205 2 020200702020 KEKEREKE ORAK X 0 0 0 0 0 0 0 0 0 KOKO o 0 0 xox D C0000 0 000 0 0 0 0 60 04 X O 0 9 0 0 0 0 0 0 0 0 0 0 020 6 0 Ee Ns UH eS Ns ors ox EX1200 Series Introduction 17 VTI Instruments Corp EX1200 SERIES 3 U MAINFRAME FRONT PANELS EX1269 Front View 18 EX1200 Series Introduction www vtiinstruments com EX1200 SERIES DMM SPECIFICATIONS GENERAL SPECIFICATIONS MEASUREMENT FUNCTIONS DC voltage DCV true rms AC voltage ACV DC current DCI true rms AC current ACI 2 wire ohms 2W R 4 wire ohms 4W R PHYSICAL Dimensions 8 6 in x 4 in x 0 6 in COOLING Recommended airflow 5 9 L s 12 5 CFM minimum ENVIRONMENTAL Operating temperature 0 C 55 C Operating altitude 10 000 ft 3 000 m maximum Operating humidity 5 95 non condensing 0 C 30 C 5 75 non condensing 30 C 40 C Storage temperature 5 45 non condensing 40 C 50 C per 3 8 2 of MIL PRF 28800F Class 3 40 C 70 C Storage altitude 15 000 ft 4 500 m maximum Storage humidity 5 95 non condensing Shock and vibration Per 3 8 5 of MIL PRF 28800F Class 3 WARM UP TIME 30 min LINE FREQUENCY Manually set to 50 Hz or 60 Hz default LIMITS Prog
58. no longer correlate to the actual status as it cannot refresh faster than this rate Last Measurement If a DMM module is installed its last measurement is shown here Last Channel Displays the last known scanned channel This is based on the current programmed scanlist If the scanlist is modified this display may be inaccurate System Buttons The four orange buttons at the top right of the Status Display are system buttons that affect the functionality of the EX1200 system and all installed modules Lock Unlock Requests or releases exclusive access to the EX1200 system Reset Resets the SFP and the connected modules to power on defaults Figure 7 5 shows the default values for the scanner Save Load These functions allow the user to either save or load the present DMM scanlist and trigger configurations Saving a configuration allows the user to use the same settings at a later time When the Save button is clicked the user is prompted to choose a file name where the data will be saved To load a saved state simply click on the Load button select the desired file from the dialog box that appears and then click OK EX1200 Series Maintenance 107 VTI Instruments Corp Scanlist Field The Scanlist field allows for the creation of a list which can be sequentially executed once the Scan and Step Trigger requirements have been met Each scan step consists of two phases the setup phase and the sweep phase The setup pha
59. outlet where accessibility to the plug cord is poor WARM UP TIME The specified warm up time for the EX1200 systems is 30 minutes If however the unit is being subjected to an ambient temperature change greater than 5 extra stabilization time is recommended to achieve maximum performance PLUG IN MODULE INSTALLATION Before installing a plug in module into an EX1200 system make sure that the mainframe is powered down Insert the module into the base unit by orienting the module so that the metal cover of the module can be inserted into the slot of the base unit Position the cover so that it fits into the module s slot groove Once the module is properly aligned push the module back and firmly insert it into the backplane connector See Figure 2 1 for guidance FIGURE 2 1 MODULE INSTALLATION EX1200 3048 USED AS EXAMPLE 32 EX1200 Series Preparation for Use www vtiinstruments com REMOVING PLUG IN MODULES An extractor handle P N 41 0472 058 is provided is with all EX1200 mainframes to assist with removal of the module after installation To remove a module ensure that the captive screws have been removed from the EX1200 mainframe Next insert the insertion screw between the head of the screw and the front panel for the plug in module as shown in Figure 2 2 FIGURE 2 2 USING THE EXTRACTOR HANDLE EX1202 EX1262 MAINFRAME INSTALLATION OPTIONS EX1202 and EX1262 have three options which can installed pr
60. perform an LCI reset and an immediate reboot of the EX1200 depress the reset button for longer than 10 s wait for the LAN LED to flash red then release the button This will return the EX1200 to the power on default state The network configuration will be restored to factory defaults in accordance with the LCI reset procedure described in the LXI Specification The EX1200 reverts to the default network configuration DHCP and Auto IP enabled instead of its previous settings VXI 11 Discovery supported by the VISA IO Libraries can be used to determine the IP address of the instrument Some mainframes EX1262 EX1266 EX1268 and EX1269 provide a five line bus routed through the backplane to the onboard DMM The lines are analogous to the five front panel banana jack connections on the DMM see Section 4 The bus is also accessible via the 9 pin rear DMM BUS I O connector which allows a signal to be routed to an external DMM or to extend the bus to multiple mainframes Voltage and Resistance Measurements 4 Wire Resistance Current Measurements 2 A Max K76 K78 K80 CH1 COMH Pin A15 7 S CH1 COMH Pin 15 7 S CH1_COMH Pin A15 T a CH1_COML Pin 1 4 CH1 COML Pin A14 CH1 COML Pin 14 K77 W K79 W K81 U CH2 COMH Pin E17 7 BPL 2 COMH Pin 17 5 BPL 2 COMH Pin E17 7 5 BPL DAMPS CH2_COML Pi
61. process When enabled as an output each channel also has the ability to generate a 1 us pulse upon command The specific operation of the pulse depends on the static level programmed for that channel When a channel is programmed with a static level of high the pulse will be low going When a channel is programmed with a static level of low the pulse will be high going Each pulse generation requires a separate function call A common application of the pulse generation is multiple unit synchronization Referring to Figure 3 1 above each unit can be configured to trigger on the same Trigger Bus channel Then one unit is selected as a master and is used to output a signal on the designated Trigger Bus channel line serving as a common trigger source for all three instruments The default selections for each Trigger Bus channel are output enable is off e output level is 0 The electrical specifications for the trigger bus are provided in Table 3 Value Logic Type M LVDS Type 2 Vire 150 mV max Vir 50 mV min Vos V typical TABLE 3 4 TRIGGER BUS ELECTRICAL SPECIFICATIONS EX1200 Series Basic Mainframe Operation 63 VTI Instruments Corp In addition to a single master multiple slaves configuration the Trigger Bus can be configured in Wired OR mode This mode allows multiple instruments to bring an LXI Trigger Bus channel to a 1 state The channel will only go back to
62. product met its published specifications at the time of shipment from the factory VTI further certifies that its calibration measurements are traceable to the United States National Institute of Standards and Technology formerly National Bureau of Standards to the extent allowed by that organization s calibration facility and to the calibration facilities of other International Standards Organization members Note that the contents of this document are subject to change without notice WARRANTY The product referred to herein is warranted against defects in material and workmanship for a period of one year from the receipt date of the product at customer s facility The sole and exclusive remedy for breach of any warranty concerning these goods shall be repair or replacement of defective parts or a refund of the purchase price to be determined at the option of VTI Note that specifications are subject to change without notice For warranty service or repair this product must be returned to a VTI Instruments authorized service center The product shall be shipped prepaid to VTI and VTI shall prepay all returns of the product to the buyer However the buyer shall pay all shipping charges duties and taxes for products returned to VTI from another country VTI warrants that its software and firmware designated by VTI for use with a product will execute its programming when properly installed on that product VTI does not however warrant that t
63. sure the cables assemblies are inserted correctly refer to Figure 9 3 for correct orientation FIGURE 9 3 DMM CABLE INSTALLATION CONNECTOR ORIENTATION EX1200 Series Maintenance 139 VTI Instruments Corp EX1200 DMM CALIBRATION VERIFICATION INTRODUCTION Verification is the process by which the measurements of the EX1200 DMM are compared to reference standards to determine variances between the values measured by the DMM and the values outputted by the standard After the completion of verification a report can be saved that shows the measured and expected values for the points measured Using the EX1200 DMM s verification functionality the user can generate before and after data for trending purposes Calibration is the process by which the DMM is adjusted and modified through changing calibration constants i e offset and gain to more tightly correlate the values it measures with the values outputted by the reference standard Calibration generates a list of calibration constants which can be saved and viewed upon completion but does not generate a report with the expected and measured values VTI recommends that the EX1200 DMM have factory calibration performed annually to ensure that the instrument maintains its accuracy and precision The following procedure describes the resources and steps necessary to perform verification and factory calibration REQUIRED RESOURCES Equipment Needed LAN GPIB g
64. the front bracket are secured slide the rear support brackets so that they can be attached to the rack as well After securing the rear support brackets tighten the screws and KEPS nuts installed in step 4 38 EX1200 Series Preparation for Use www vtiinstruments com FIGURE 2 6 HALF RACK WIDTH RACKMOUNT INSTALLATION DIAGRAM EXPLODED FRONT VIEW EX1200 Series Preparation for Use 39 VTI Instruments Corp Rackmount Installation Dual Half Rack Width Option P N 70 0373 104 The rackmount installation option includes all the parts necessary to mount an EX1200 to the front and rear of a standard test rack Required Tools 1 2 Phillips screwdriver 2 5 16 wrench or socket Parts List Item Qty Description VTI P N 1 2 Bracket Rack Ear Single Half Rack EX1262 02 41 0493 009 2 1 Bracket Front Mating EX1262 02 41 0493 006 3 1 Bracket Rear Mating EX1262 02 41 0493 007 4 2 Bracket Unit Support EX1262 02 41 0482 010 5 2 Bracket Rear Rack Support EX1262 02 41 0482 011 6 2 Screw 4 40 x 3 8 Flat Head Phillips 82 Stainless Steel 37 0100 037 7 4 Screw 4 40 x 0 187 Pan Head Phillips Zinc 37 0011 018 8 13 Screw 6 32 x F H Undercut Phillips Zinc 37 0114 025 9 2 Screw 6 32 x 3 8 Pan Head Phillips Sq Cone SEMS Zinc 37 0028 037 10 6 Screw 8 32 x 3 8 Pan Head Phillips Sq Cone SEMS Zinc 37 0073 037 11 4 Nut Hex KEPS 8 32 Steel Zinc 37 0200 832 A
65. vtiinstruments com Connect Disconnect This button toggles between Connect and Disconnect When Connect is selected the path defined to the right of the button will be made Choosing Disconnect will open the defined path B Drop Menus From these menus the input and output of each required path can be defined These menus are populated with the channels information for each plug in card installed in the EX1200 When 1 CH1_1 is displayed this indicates Slot 1 channel CH1 1 has been selected e Buttons The buttons allow the user to add or delete connections from the given scanlist e Wait before next checkbox When selected for a connection the scan list will wait until the relay has settled before advancing to the next step in the scanlist Sweep Field The Sweep phase of the scan step occurs last and consists only of measurement operations These measurements can be performed on any of the channels which have the ability to connect to the DMM via the backplane see the 1200 Switch Card User s Manual for information regarding switch card capabilities After clicking on the white entry box the user can 1 click on the black configuration button on the right to start the Sweep Wizard see Figure 7 7 or 2 enter a valid sweep sub step string directly into the box The wizard allows the user to scan any from any connected switch card in ascending order and allows for one DMM configuration to be selected per channel
66. 0 DMM Operation www vtiinstruments com Power Line Noise Rejection An intrinsic characteristic of integrating ADCs is their ability to reject spurious signals When the PLCs is set to an integer value the integrating technique rejects power line related noise present with a signal on the input This is called normal mode rejection or NMR Note that common mode rejection is with a voltage being common to both input terminals while NMR is with an ac voltage between the two input terminals Normal mode noise rejection is achieved when the DMM measures the average of the input by integrating it over a fixed period Noise Caused by Magnetic Loops When measurements are taken near magnetic fields precautions should be taken to avoid inducing voltages in the measurement conductors This is especially important when working near conductors carrying large currents To reduce noise pickup loop area use twisted pair connections to connect to the DMM or dress the input cables as close together as possible Hanging or vibrating input cables can also induce error voltages Be certain that the input cables are tied down securely when operating near magnetic fields and whenever possible use magnetic shielding materials or physical separation to reduce problems related to magnetic field sources DMM Backplane IH 15 Idd HS 148 Loo EX1200 EX1200 Mainframe Multiplexer Cardg Magnetic Sour
67. 0 DMM will measure the signals received The entire measurement path including the power line acts as a loop antenna Circulating currents in the loop creates error voltages across any impedances in series with the DMM s input For this reason low level ac voltages should be input to the multimeter through shielded cables The shield should be connected to the input LO terminal Make sure the DMM and the ac signal source are connected to the same electrical outlet whenever possible This minimizes the difference in the earth potentials and avoids forming ground loops If ground loops cannot be avoided the area of the loops should be minimized Measurements of high impedance sources are more susceptible to noise pickup than measurements of low impedance sources To reduce noise pick up place a capacitor in parallel with the DMM s input terminals HI and LO The correct capacitor value can only be determined by experimentation as the capacitance also contributes some loading error while helping reduce noise pick up Reverse Connections and AC Common Mode Offset Ideally a DMM reads the same voltage regardless of how the source is connected to the DMM HI and LO In practice errors are generated when the DMM s input LO terminal is driven with an voltage relative to earth The most common situation where unnecessary turnover errors are created is when the output of an ac calibrator is connected to the multimeter backwards Becaus
68. 0 kHz 100 kHz 3 81 V Specifications are for sine wave input gt 5 of range for 100 mV 100 V ranges gt 15 for 300 range with High AC filter selected Volt hertz product is limited to 1 5 107 V Hz Over range 20 beyond range except 300 V range Input Impedance 1 2 in parallel with lt 100 pF EX1200 Series Introduction 23 VTI Instruments Corp AC CURRENT 6 DIGITS 1 YEAR ACCURACY RANGE RESOLUTION ERFOUENCY TOES OEC TOSSE RANGE READING RANGE lt 30 RANGE gt 30 RANGE 10 mA 10nA 20 Hz 45 Hz 0 6000 0 0350 200 pA 200 pA gt 45 Hz 20 kHz 0 5000 0 0300 100 pA 100 pA 20 Hz 45 Hz 0 320096 0 035096 411 uA 2mA ons us 245 Hz 20 kHz 0 250096 0 030096 177 uA 500 uA 1 uA 20 Hz 45 Hz 0 3000 0 0300 4 11 mA 10 mA gt 45 Hz 20 kHz 0 2500 0 0300 1 77 mA 4mA 3A lu 20 Hz 45 Hz 0 400096 0 030046 30 2 mA 30 2 mA gt 45 Hz 20 0 3000 0 0300 17 6 mA 17 6 mA Specifications are for sine wave input gt 5 with Low AC filter AC CURRENT 5 1 2 DIGITS 1 YEAR ACCURACY RANGE RESOLUTION EREOUENCY READING ACCURACY READING ACCURACY 100 ma SOA opa 730 3A item Specifications are for sine wave input gt 5 wit
69. 00 IP Address 10 14 65 Reboot Gateway Address 10 1 1 127 MAC Address 00 0D 3F 01 0C E2 TIME CONFIGURATION This entry page is used to change the time configuration of the EX1200 As the EX1200 has no notion of wall clock or calendar time and no battery backed clock or any other mechanism to retain time between reboots and power cycles the time must be set by the user By default the instrument s time and date at power up are midnight January 1 1999 as defined by the microcontroller Three time source options are provided PTP Precision Time Protocol or IEEE 1588 synchronization SNTP simple network time protocol or manual The default time source is PTP e Time Zone allows the user to select an appropriate time zone Time Source allows the user to set the EX1200s date by entering the month MM day DD and year YYYY respectively Set Time for the and Manual Time Source allows the user to set the EX1200s time by entering the hour HH minute MM and second SS respectively If the EX1200 is set as an IEEE 1588 Master the hour should be entered using the 24 hour format NTP Servers for the SNTP Time Source allows the use to add remove save NTP servers to which the EX1200 will synchronize its time e Time Status this section of the web page provides the mainframe s current time configuration settings Using PTP Time To configure the EX1200 to use PTP time as the clock
70. 00 ft 4 500 m maximum 5 95 non condensing Per 3 8 5 of MIL PRF 28800F Class 3 POWER SPECIFICATIONS AVAILABLE POWER EX1202 06 62 66 120 W EX1208 68 120 W per segment 360 W total USEABLE POWER EX1202 EX1206 115 W EX1262 EX1266 110 W EX1208 68 Slots 1 5 102 W EX1208 Slots 6 10 97 W EX1268 Slots 6 10 102 W EX1208 68 Slots 11 16 102W The EX12x8 mainframe is powered by four power supplies and each power supply is used for a finite number of mainframe slots For more information see the Power Consumption in Appendix B MAXIMUM CURRENT PER 3 3 V 5V 24 V EX1202 EX1206 6 00 A 13 420 A 3 320 A EX1262 EX1266 6 00 A 13 410 3 074 A EX1208 68 Slots 1 5 14 99 A 13 582 A 2 950 A EX1208 68 Slots 6 10 14 99 A 13 362 A 2 950 A EX1208 68 Slots 11 16 14 99 A 13 355 A 2 950A Note The EX12x8 mainframe is powered by four power supplies and each power supply is used for a finite number of mainframe slots For more information see the Power Consumption in Appendix B Note For more information on calculating power consumption please refer to the Power Consumption in Appendix Note These values indicate the maximum current provided by the power supply This value is limited by the carrying capacity for that rail See the Maximum Current Carrying Capacity per Slot specification for more information MAXIMUM CURRENT CARRYING CAPACITY PER SLOT
71. 1 A 0 0037 A 0 005A Add 140 mA per relay closure on 24 V 7122 plug in 0 131 A 0 0037 A 0 005A Add 280 mA per relay closure on 24 V Switch Module 3 3 V 5 V 24 V Notes EX1200 1538 0 380 A 0 0081 A 0 15 A N A EX1200 3604 0 3A 10A 0 8A N A EX1200 3608 0 3A 10 14 1200 7416 0 250 A 0 0051 A 0 133 A Add 24 mA per relay closure on 5 V two relays per channel used EX1200 7500 0 260 A 0 450A 0 0240 A N A EX1200 7600 0 129 A 0 0041 A 0 2 A Add 24 mA per relay closure on 5 V Maximum value Appendix B 149 VTI Instruments Corp APPLICATION NOTE OVERVIEW As with any backplane based system where modules share power such as VXI the possibility exists where a combination of plug in modules may exceed the maximum power available from the power supply There are two limitations that govern power delivery by a supply 1 the maximum power of the power supply and 2 the maximum power that can be delivered to a single slot To avoid potential power related issues these two limitations cannot be exceeded As a reference the power specifications for the EX1200 mainframes are provided which indicate the limitations on the power supplies and the slots POWER SPECIFICATIONS AVAILABLE POWER EX1202 06 62 66 120 W EX1208 68 120 W per segment 360 W total USEABLE POWER EX1202 EX1206 115 W 1262 1266 110 W EX1208 68 Slots 1 5 102 W 1208 Slots 6
72. 10 97 W EX1268 Slots 6 10 102 W EX1208 68 Slots 11 16 102W The EX12x8 mainframe is powered by four power supplies and each power supply is used for a finite number of mainframe slots For more information see the Power Consumption in Appendix B MAXIMUM CURRENT PER Rat 3 3 V 5V 24 V EX1202 EX1206 6 00 A 13 420 A 3 320 A EX1262 EX1266 6 00 A 13 410 A 3 074 A 1208 68 Slots 1 5 14 99 13 582 2 950 A EX1208 68 Slots 6 10 14 99 A 13 362 A 2 950 A EX1208 68 Slots 11 16 14 99 A 13 355 A 2 950A MAXIMUM CURRENT CARRYING CAPACITY PER SLOT 3 3 V rail 6A 5 V rail 3 75 24 V 1 6A Note The EX12x8 mainframe is powered by four power supplies and each power supply is used for a finite number of mainframe slots For more information see the Power Consumption in Appendix B Note For more information on calculating power consumption please refer to the Power Consumption in Appendix Not These values indicate the maximum current provided by the power supply This value is limited by the carrying capacity for that rail See the Maximum Current Carrying Capacity per Slot specification for more information EXI2X2 AND 12 6 POWER CONSUMPTION CALCULATION For the EX12x2 and EX12x6 mainframes the total power useable between the 3 3 V P33v 5 V Psy and 24 V Pay rails is defined by the Useable Power specification for the mainframe being used These
73. 10 MQ 0 0055 0 003596 30 0 mV 30 0 mV 100 mV 5 digit 1 000V 10GQ 10 MQ 0 0150 0 006896 15 3 uV 33 0 uV 1 V 5 V digit 10 00 1060 10 0 0060 0 0011 33 0 uV 330 0 uV 10 5 2 digit 100 00 uV 1069 10 MQ 0 0035 0 0008 330 0 uV 3 3 mV 100 V 5 digit 1 00 mV 10 MQ 0 0050 0 0010 3 3mV 33 0 mV 300 V 5 digit 1 00 mV 10 MQ 0 0055 0 0037 33 0 mV 33 0 mV 100 mV 4 digit 10 00 1060 10 0 0150 0 0075 15 6 uV 36 0 uV 1 V 4 digit 100 00 uV 1069 10 MQ 0 0060 0 0012 36 0 uV 360 0 uV 10 4 1 digit 100mV 10GQ 10 MQ 0 0035 0 0009 360 0 uV 3 6 mV 100 V 4 digit 10 00 mV 10 MQ 0 0050 0 0011 3 6 mV 36 0 mV 300 V 4 1 digit 10 00 mV 10 MQ 0 0055 0 0040 36 0 mV 36 0 mV Selectable input resistance to support external high voltage probe 10 Typical gt 1 GO Worst Case 10 0 1 Over range 20 of range except 300 V range Normal Mode Rejection Ratio NMRR at power line frequency 40 1 60 dB for 1 PLC 10 PLC 100 PLC Common Mode Rejection Ratio CMRR 140 dB at DC Input bias current 100 pA typical at 23 C DC CURRENT 1 YEAR ACCURACY MAXIMUM Tear 5 C 0 C To 55 RANGE RESOLUTION BURDEN READING RANGE lt 30 RANGE gt 30 RANGE VOLTAGE 1 mA 6 digit 1 lt 01 0 0500 0 0100 396
74. 2 MB SPI Flash No FPGA image No None 2 MB Static RAM Yes User pattern data Yes Power off For a complete list of switch cards please refer to the EX 200 Switch Card User s Manual P N 82 0127 001 Device Configuration File EX1200 Series Maintenance 147 VTI Instruments Corp Product Component Volatile Contains User Writeable Clear Procedure EX1200 3608 8 MB Flash No Model amp serial No None number file No SFP No None No User configurations Yes Call Delete All API No Calibrations Yes Use the calibration APIs to overwrite the data 2 MB SPI Flash No FPGA image No None 4 RAM Yes Waveforms Yes Power off EX1200 7600 8MB Flash No Model amp Serial No None SFP No None 2MB SPI Flash No FPGA Image No None 148 Appendix A www vtiinstruments com APPENDIX B POWER CONSUMPTION PLUG IN MODULE POWER CONSUMPTION The following tables provide power consumption information for the EX1200 series plug in modules The EX1200 mainframe power is also provided to assist in determining available power Switch Module 3 3 V anes WY 24 V Notes EX1200 2001 0 131 A 0 0037 A OA Add 75 mA per relay closure on 5 V EX1200 2002 0 131 A 0 0037 A OA Add 75 mA per relay closure on 5 V EX1200 2007A 0 135 A 0 0041 A 0A
75. 4 11 TEMPERATURE RESOLUTION Built in Sensor Support To simplify temperature measurement configuration several sensor have been predefined in the SFP and in the driver APIs See Table 4 10 for a list of predefined sensors All constants and conversion parameters needed for these sensors are built into the DMM allowing them to be directly configured and used Basic EX1200 DMM Operation 91 VTI Instruments Corp Custom User Defined Sensors Although several sensors are predefined for temperature measurements the EX1200 DMM also offers the ability to define custom sensors to add flexibility to a test system For thermocouples custom types are defined at the application level by using the measured voltage value and passing it to a software defined look up table For custom RTDs or thermistors the parameters defined in Table 4 10 must be defined as appropriate Using a Thermocouple To perform a temperature measurement using thermocouples a reference junction temperature must be used to calculate the hot junction temperature The reference junction temperature can be obtained using a known fixed junction temperature an external thermistor or RTD measurement or by using the onboard internal thermistor of an EX1200 series terminal block on supported terminal blocks only When a fixed reference temperature is used it must be provided as a value 20 C and 80 C again all temperature measurements must be made in C For
76. 48 Psy 25 V x 1 000 A 0 454 A 0 234 Psy 8 44 W 3 3 V x Ex1200 3608 13 3v 1200 2001 13 3 EX 1200 3048 80 efficiency 3 3 V x 0 300 A 0 131 A 0 129 A 80 efficiency P33y 2 31 W To verify that this is a valid configuration the values can be substituted into the criteria above 1 Poy t Psyt lt 120W 33 6 W 8 44 2 31 lt 120 True 2 lt 84W 33 6 W 2 31 W lt 84 3 Psy 75 W gt 844 W x 75W True 4 lt 24W gt 2 31 W lt 24W True The remaining power for this mainframe is 75 65 W for additional cards to draw from EX12x8 POWER CONSUMPTION CALCULATION EX12x8 mainframes are powered by four power supplies Although these are the same power supplies as used in the EX12x2 and EX12x6 mainframes one power supply is solely responsible for supplying the 3 3 V power while the remaining three supplies provides power to specific slots or segments of the backplane The three segments use the following slots 1 through 5 6 through 10 and 11 through 16 see Figure B 1 While the 5 V and 24 V rails are divided into segments the single power supply that provides the 3 3 V rail does so for all sixteen 16 slots Appendix B 151 VTI Instruments Corp S E ee Backplane Power Segment Backplane Power Segment Backplane Power Segment Slo
77. 5 0 20 0 20 0 25 0 30 0 30 0 35 0 45 K 200 1372 0 25 0 20 0 20 0 20 0 35 0 35 0 45 0 55 0 50 T 200 400 0 25 0 20 0 20 0 20 0 25 E 200 900 0 25 0 20 0 20 0 20 0 25 0 30 0 35 5 50 1768 1 00 0 75 0 65 0 65 0 65 0 70 0 70 0 75 R 50 1768 1 00 0 75 0 60 0 60 0 60 0 60 0 65 0 70 B 250 1820 1 65 1 10 0 80 0 70 0 65 0 65 N 200 1300 0 40 0 25 0 25 0 25 0 30 0 35 0 40 0 40 Values in C Conditions Requires use of breakout box that is in a thermally stable environment 30 minute warm up Guaranteed maximum limits two times 2x the typical values Exclusive of thermocouple errors Exclusive of noise Common mode voltage 0 1400 accuracy is for 1372 C 500 accuracy is for 400 C SYSTEM SPEED EVENT Function Change DCV DCI 9 s 4 W resistance 100 1 9 s 2 W resistance 1 1 5 0 4 5 High filter ACI 0 01 A amp 0 1 A 0 25 s High filter Range Change DCV DCI 300 s 4 W resistance 100 O 1 300 s 2 W resistance 1 2 8 ACV 0 1 V to 100V lt 1 25 s High filter ACI 0 01 A amp 0 1 A lt 0 2 s High filter Auto Range Time DCV DCI lt 30 ms 4 W resistance 100 to 100 lt 60 ms 2 W resistance 100 to 100 3 0s ACV 0 1 V to 100 V 2 0 s High filter ACI 0 01 A amp 0 1 A 4 0 s High filter Max reading rate 2000 s see DC
78. 59 84 mV vuU Y 1 02 V 520 kHz 100 kHz 285 mV 3 78 V 20 Hz 45 Hz 3 63 V 545 Hz 100 HZ 300 V 1 mV ciem 520 kHz 100 kHz Specifications are for sine wave input gt 596 of range for 100 mV 100 V ranges gt 15 for 300 V range with High AC filter selected Volt hertz product is limited to 1 5x10 V Hz Over range 2096 beyond range except 300 V range Input Impedance 1 2 in parallel with lt 100 pF AC VOLTAGE 415 DIGITS 1 YEAR ACCURACY ance RESOLUTION FREQUENCY 0 55 RANGE READING ACCURACY READING ACCURACY 20 Hz 45 Hz 381 uV 2 31 mV 545 Hz 100 Hz 201 uV 1 26 mV goa kee 201 pV 0 87 mV 520 kHz 100 kHz 288 uV 2 88 mV 20 Hz 45 HZ 2 31 mV 231 mV gt 45 Hz 100 Hz 126 mV 12 6 mV d 0 87 mV 8 7 mV 520 kHz 100 kHz 2 88 mV 28 8 mV 20 Hz 45 Hz 23 1 mV 231 mV 545 Hz 100 Hz 12 6 mV 126 mV gt 100 Hz 20 kHz lt 3V 8 7 mV sey 87 mV 520 kHz 100 kHz 28 8 mV 288 mV 20 Hz 45 231 mV 3 66 V 545 Hz 100 Hz 126 mV 1 86 V gt 100 gt 20 9 87 mV dnd 1 05 V 520 kHz 100 kHz 288 mV 3 81 V 20 Hz 45 HZ 3 66 V UN gt 45 Hz 100 HZ 1 86 V gt 100 gt 20 300 Y 1 05 V 52
79. 66 DMM REMOVAL The mainframe can continue to be used once the DMM has been removed Installation Procedure 1 Using the guides shown in Figure 9 1 slide the DMM into the mainframe unit until the DMM is supported by the card guides 2 Insert the connector removed in step 2 above and insert it into J6 on the input board 3 Slide the DMM into the mainframe unit the front panel is flush with the front of the chassis 4 Install the three screws as shown in Figure 9 1 using a 2 Phillips screw driver EX1267 EX1268 and 269 DMM Removal Removal Procedure 1 Remove the two screws shown in Figure 9 2 using the 2 Phillips screwdriver Retain these screws for re installation 2 Usethe handle on the front panel of the DMM to slowly remove the DMM from the chassis Note that once half of the DMM has been removed the remove the connector at P2 P3 and 138 1200 Series Maintenance www vtiinstruments com Card Guides Top View Cover Removed FIGURE 9 2 EX1267 68 69 DMM REMOVAL Installation Procedure 1 Using the guides shown in Figure 9 2 slide the DMM into the mainframe unit the until DMM is supported by the card guides 2 Insert the connector removed in step 2 above and insert it into P2 P3 and P4 3 Slide the DMM into the mainframe unit the front panel is flush with the front of the chassis 4 Install the three screws as shown in Figure 9 2 using a 2 Phillips screw driver 5 Make
80. Add 40 mA per relay closure on 5 V EX1200 2008H 0 140A 0 005 A 0A Add 17 mA per relay closure on 5 V EX1200 3001 0 135 A 0 0041 A 0A Add 26 mA per relay closure on 5 V EX1200 3048 0 129 A 0 0041 A OA Add 23 mA per relay closure on 5 V EX1200 3048S 0 131 A 0 0041 A 1200 3072 0 129 0 0041 A OA Add 23 mA per relay closure on 5 V EX1200 3096 0 140 A 0 005 A OA Add 28 mA per relay closure on 5 V EX1200 3164 0 129 A 0 0041 A OA Add 23 mA per relay closure on 5 V EX1200 4003 0 137 A 0 0040 A OA Add 25 mA per relay closure on 5 V EX1200 4128 0 129 A 0 0041 A 0A Add 28 mA per relay closure on 5 V EX1200 4260 0 014 A 0 005 A 0A Add 28 mA per relay closure on 5 V EX1200 4264 0 014 A 0 005 A 0A Add 28 mA per relay closure on 5 V EX1200 5001 0 129 A 0 0041 A OA Add 23 mA per relay closure on 5 V EX1200 5002 0 129 A 0 0041 A 0A Add 23 mA per relay closure on 5 V EX1200 5006 0 140A 0 005 A 0A Add 28 mA per relay closure on 5 V EX1200 6101 0 140A 0 005 A 0A Add 28 mA per relay closure on 5 V EX1200 6111 0 140A 0 005 A 0A Add 28 mA per relay closure on 5 V EX1200 6216 0 129 A 0 0041 A OA Add 28 mA per relay closure on 5 V EX1200 6216HV 0 140 A 0 005 A OA Add 67 mA per relay closure on 5 V EX1200 7100 0 131 A 0 0037 A OA Values for carrier only 7102 plug in 0 131 A 0 0037 A 0 005A Add 140 mA per relay closure on 24 V 7104 plug in 0 131 A 0 0037 A 0 005A Add 140 mA per relay closure on 24 V 7106 plug in 0 13
81. Basic EX1200 DMM Operation www vtiinstruments com Pin Function Front Panel Equivalent 1 SHI Sense HI 2 3 HI HI 4 N C N A 5 DAMPS Input I 6 SLO Sense LO 7 GUARD Ground Stud on Rear Panel 8 9 1U Mainframes 3U Mainframes Female Connector Male Connector TABLE 4 1 DMM BUS I O PIN SIGNALS Using the DMM Bus with Switch Cards Some switch cards and plug in instruments can access the EX1200 DMM without external wiring as they can connect across the backplane to the DMM bus Refer to the user documentation for the specific plug in modules for information regarding connection to the DMM bus Basic EX1200 DMM Operation 69 VTI Instruments Corp DMM MEASUREMENT BASICS When making a measurement the following sequence should be followed These steps are discussed in detail in the following sections for IVI COM Select an Input Connector Configure the Measurement Configure Triggering Take the Measurement Retrieve the Data SELECT AN INPUT CONNECTOR There are two connections that can be used to take a measurement the front panel banana jacks or the DMM Bus The banana jacks on the front panel allow connection to the DMM via the front panel while the DMM Bus allows for connection from either the DMM Bus rear panel connector or from switch cars that have access to the EX1200 DMM bus via their backplane connectors Figure 4 2 shows how the EX1200 backplane swit
82. C LEFT AND STATIC RIGHT IP ADDRESS CONFIGURATIONS 6 Ifset to use a static IP record the IP address subnet mask and default gateway for use later Select Obtain an IP address automatically to establish a connection to the EX1200 Click the OK button and proceed to Set the EX1200 to Static IP If set to use a dynamic IP click the OK button and proceed to Set the EX1200 to Auto IP Set the EX1200 to Auto IP 1 Remove all network connections from the PC except for the connection to the EX1200 Wireless adapters should be disabled as well 2 Apply power to the EX1200 and wait for the LAN LED to turn green 3 Discover EX1200 using LXI Discovery Tool as described in the Web Page Operation in Section 7 The steps taken previously should ensure that discovery works 4 Once connected to the EX1200 click on Network Configuration in the command menu 5 Select DHCP and AutoIP in the IP Address Source field and ensure that Static IP is not selected Figure 2 17 shows the proper configuration Click the Submit button to save all changes EX1200 Series Preparation for Use 55 VTI Instruments Corp Iisornisies Corporation e 61200 r 3179155 CunfTd Urs tiui Windows Ime G http Jex 122764a local cai bin nebwork cg ly Favorites SEI VTI Instruments Corporation EX1200 Network VTI EX1 200 Network Confi Instruments IP Address Source DHCP AutolP E Static Soft Front Panel Host
83. CD ROM and using Windows Explorer navigate to the CD ROM Drive Platforms Requisites directory Next run the JRESetup exe program Once installation begins simply follow the on screen instructions DRIVER INSTALLATION To monitor and or control the EX1200 s instruments programmatically via a user generated program or through tools such as HP VEE National Instrument s Switch Executive etc two additional components must be installed the IVI Shared Components library and the provided VTI Instruments driver Follow these steps IVI Shared Components Installation If this component was installed during a previous LXI instrument installation please proceed to Switch Instrument Driver Installation First close all other open programs leaving only Windows Explorer open Navigate to the CD ROM Drive N XI Drivers EX Platform Requisites directory on the CD and run the IVISharedComponents1 5 0 exe program Next follow the on screen instructions Do not proceed to the next step until this installation completes successfully If instructed to reboot the PC it will be necessary to do so at that time Switch Instrument Driver Installation If the VTEXSwitch instrument driver was installed previously on the host PC proceed to System LXISync Instrument Driver Installation To install the VTEXSwitch instrument driver navigate to CD ROM Drive gt LXI Drivers EX Switch Driver IVI on the CD and run the msi installer located
84. Delay DCV and DCI 300 s 3 33 10 s 4 wire resistance 100 1 300 s 3 33 1055 2 wire resistance lt 1 2 5 0 5 0 1 to 100 high filter lt 1 25 0 8 s ACI 0 01 A amp 0 1 A high filter lt 0 2 58 TABLE 4 3 RANGE DELAY To further optimize the speed and accuracy of DMM measurements the resolution of the measurement reading can be adjusted for most functions Resolution is expressed in terms of number of significant digits the multimeter can measure 3 412 5 or 6V5 digits The DMM determines the aperture time based on the following algorithm 76 Basic EX1200 DMM Operation www vtiinstruments com X Resolution Range Where Range 100V if userRange 300V 1A if userRange 3A userRang otherwise if X lt le 6 numberOfPLC 10 else if X lt 1 5 numberOfPLC 1 else if X lt 1 4 4 5 digits numberOfPLC 0 1 else 3 5 digits numberOfPLC 0 01 apertureTime numberOfPLC PowerLineFrequency Note that the EX1200 DMM s resolution is related to aperture time and can be modified to set this property NOTE When the DMM is set to measure ac voltages using Low Medium filter option the data is automatically measured with 6 2 digit accuracy INTEGRATION APERTURE TIME AUTO ZERO The EX1200 s DMM uses a slope integrating ADC to quantify the analog signal levels into digital values The digital bits
85. ED FRONT VIEW 46 EX1200 Series Preparation for Use www vtiinstruments com 3U MAINFRAME INSTALLATION OPTIONS EX1200s have three options which can installed prior to installation e Tabletop Installation Option P N 70 0370 100 e Rack Ear Installation Option P N 70 0370 101 e Rackmount Installation Option P N 70 0370 102 These options are not included with the EX1200 system and must be ordered separately Tabletop Installation Option P N 70 0370 100 The tabletop installation option can be used when an EX1200 is not installed in a rack but will be employed as a bench top or desktop instrument Required Tools 1 2 Phillips screwdriver Parts List Item Qty Description 1 8 Feet Corner Rubber Shaped 37 028 1 200 2 2 Shim Bottom Rubber Feet EX1267 8 9 41 0494 022 3 28 Screw 6 32 x 7 16 Pan Head Phillips Zinc 37 0044 044 Assembly Procedure 1 Place the chassis a protected work surface with its input connectors facing front 2 Using Figure 2 11 locate the installation locations for each rubber foot Note the location of the two shims P N 41 0494 022 that are required for the two bottom front locations 3 Using the 2 Phillips screw driver install the eight rubber feet using four 4 6 32 x 7 16 pan head Phillips screws to secure the top and bottom and one 1 6 32 x 1 2 pan head Phillips screw to secure side of each foot EX1200 Series
86. EX Switch Driver Programmer s Manual VTEX Scanner Driver Programmer s Manual VTEX System Driver Programmer s Manual VTI Instruments Corp Drivers and Product Manuals CD Power line cord All components should be immediately inspected for damage upon receipt of the unit DETERMINE SYSTEM POWER REQUIREMENTS The power requirements of the EX1200 mainframes are provided in the Specifications section of Section 1 As with any backplane based system where modules share power such as VXI and PXI the possibility exists where certain plug in module combinations can draw too much power from a power supply rail As such It is imperative that the chassis provide adequate power for the modules installed For more information on EX1200 mainframe power consumption please refer Appendix B The user should confirm that the power budget for the system for the chassis and all modules installed therein is not exceeded on any voltage line It should be noted that if the mainframe cannot provide adequate power to the module the instrument might not perform to specification and possibly damage the power supply In addition if adequate cooling is not provided the reliability of the instrument will be jeopardized and permanent damage may occur Damage found to have occurred due to inadequate cooling will void the warranty on the instrument in question INSTALLATION LOCATION EX1200s are designed to be largely insensitive to external electrical magnetic a
87. Frequency AC ___ Hostname Device 4 Calibrator Disconnected Dump Current Data External DMM IW Disconnected auto save AC Voltage DAC Function Generator Disconnected AC Voltage AC Current Temperature Internal 41 188 Resistance External Calibration Status Idle Function Option Minimum Maximum Pass Fail Connected p Calibration Functions Field The Calibration Functions field defines the type of calibration which will be performed as well as they functions which will be calibrated When Calibration is selected new calibration constants adjustments are generated and saved Verification uses the current calibration constants and verifies that the DMM meets its published 6 digit specifications Simple Verification is similar to Verification but uses looser specifications It is useful as a quick sanity test to ensure the hardware is working properly Calibration Verification Simple Verification drop menu Select between the Calibration Verification and Simple Verification from menu e Function sliders The sliders provided in the Calibration Functions field allow to user to perform a full calibration verification or to perform calibration verification on a subset of the DMM s functions Calibration verification of all functions will be performed whe
88. Hostname Device Calibrator 04 W FLUKE 57004 8070602 1 4 B External DMM 9 254 58 10 ib0 22 W HEWLETT PACKARD HP3458 Function Generator 82545810 551601017 Agilent Technologies 33220A My440 M Dump Current Data Auto Save Temperature Internal 27 000 Enter Ambient Temperature External FIGURE 9 11 DEVICE SELECTION AND TEMPERATURE FIELDS 6 Once the instruments have been selected click the Connect button If the connection is successful the SFP will display the 5700A s calibration information Click OK to proceed Enter the DMM s serial number when prompted 7 Inthe Temperature section enter the ambient temperature in C into the External field as shown in Figure 9 11 8 Inthe Calibration Status section click the Initiate button 9 As the calibration process progresses prompts will appear indicating the connections that need to be made between the EX1200 DMM and the reference standards The calibrator s Aux Current Out must be connected to the DUT s Input I jack at all times 10 Upon completion of calibration a window will appear indicating whether any failures occurred Save the test logs for future reference 11 Copy the cal constants to a file for future reference PERFORMING VERIFICATION When verification is run the user can generate a report that indicates the measured and expected values for the points measured during the calibration process
89. INGS SECOND DEIS NORMAL MODE NOISE DC COMMON MODE PLC 60 Hz 50 Hz REJECTION NMR REJECTION DC CMR 10 PLC 5 9 4 9 6 60 dB 140 dB 1 PLC 59 49 5 60 dB 140 dB 0 1 PLC 599 499 4 0 dB 80 dB 0 01 PLC 2000 1666 31 0 dB 80 dB Auto zero off trigger and sample delay 0 AC VOLTAGE 6 2 DIGITS 1 YEAR ACCURACY FREQUENCY Tear 5 C 0 C T0 55 C Lee RANGE READING RANGE lt 30 RANGE gt 30 RANGE 3 Hz 5 1 0000 0 0400 0 1 Rdng 40 ppm Rng C gt 5 Hz 20 Hz 0 3500 0 0400 0 04 Rdng 40 ppm Rng C gt 20 Hz 45 0 1000 0 0500 375 uV 2 25 mV 100 mV 100 nV gt 45 Hz 20 kHz 0 1000 0 0500 195 0 81 mV gt 20 kHz 50 kHz 0 6000 0 0800 282 uV 2 82 mV gt 50 kHz 100 kHz 0 6000 0 0800 282 uV 2 82 gt 100 kHz 300 kHz 5 000096 0 500096 0 2 Rdng 0 02 Rng C 3 Hz 5 Hz 1 0000 0 0300 0 1 Rdng 40 ppm Rng C gt 5 Hz 20 0 3500 0 0300 0 1 Rdng 40 ppm Rng C 1V luV 220 Hz 45 Hz 0 060096 0 030096 0 225 Range 2 25 Range 10 V 10 0 uV gt 45 Hz 20 kHz 0 060090 0 030090 0 081 Range 0 81 Range 100 V 100 0 uV gt 20 kHz 50kHz 0 120096 0 050096 0 282 Range 2 82 Range gt 50 kHz 100 kHz 0 600090 0 080090 t 0 28296 Range t 2 82 Range 2100 KHz 300 kHz 5 000095 0 500096 0 2 Rdng 0 02 Rng C 3 Hz 5 Hz 1 0000 0 0900 0 1 Rdng 40ppm Rng C gt 5 Hz 20 HZ 0 3500 0 0900 0 1 Rdng 40ppm Rng C gt 20 Hz
90. LXI Discovery Tool utility by navigating to Start Programs LXI Discovery Tool Once the utility is run LXI Discovery Tool will scan the network to discover all LAN based VTI instruments Once the scan is complete the tool shows all the instruments that were discovered as shown in Figure 7 1 To open the web page click on the Open Web Page The IP address of the EX1200 can also be viewed from this window as well as its firmware version n LXI LXI Discovery Tool File Settings LX LXI Discovery Tool LAN eXtensions for Instrumentation Search 9J IP Address Instrument Description 10 87 52 127 VTI Instruments Corporation EX1266 122754A 3 12 35 10 87 52 123 VTI Instruments Corporation EX1000A 120517 Dev1 4 1 10 87 52 30 VTI Instruments Corporation EX1266A 133539 3 12 30 10 87 52 120 VTI Instruments Corporation EX1000A 51C 135295 Dev 1 5 0 10 87 52 116 VTI SentinelEX EMX 2500 686994 Guides for using LXI Open Web Page FIGURE 7 1 LXI DISCOVERY TOOL DISPLAYING ALL THE INSTRUMENTS ON THE LAN NETWORK Alternatively the EX1200 may also be discovered using Internet Explorer s Bonjour for Windows plug in The IP address of the EX1200 can also be entered into the address bar of any web browser to view the embedded web page By default the EX1200 will first attempt to use DHCP to set its IP Address If DHCP is not available on the network it is connected to it will instead use Auto IP Det
91. MM OPERATION OVERVIEW Some EX1200 series mainframes hence referred to as EX126x include an onboard DMM please refer to 1200 Series DMM Specifications for details regarding functions ranges and accuracy The DMM can be used in three different ways directly connecting the DUT to the front panel connectors e Connection of the DUT to a switching plug in module with access the DMM backplane described later in this section e Utilizing the rear panel DMM bus D sub connector see Table 4 1 The DMM Bus connector can also be used to extend DMM use to other EX1200 instruments to use a single DMM Programming access to the DMM is provided through a soft front panel which resides on the web server of the EX1200 the Windows based IVI drivers both and IVI COM and through a multi platform driver To exercise the complete capabilities of the DMM as well as to achieve required accuracies speeds it is important to understand DMM operation This section of the manual provides basic information on how to use the onboard DMM Programming information be found in the VTEXDMM help file provided with the DMM driver Programming examples are provided to facilitate the use and understanding of the VTEXDMM driver and can be found at the following location Local Hard Drive gt Program Files VI Foundation VI Drivers WTEXDmm Examples Information regarding use of the DMM via the embedded webpage can be found in the D
92. MM Soft Front Panel description in Section 7 Basic EX1200 DMM Operation 67 VTI Instruments Corp DMM INPUT CONNECTIONS Front Panel Connector The EX126x DMM s hardware interface is made available on the front panel of the instrument The DMM front panel has the following features five banana jack inputs a fuse and three status LEDs as seen in Figure 4 1 LED operation is detailed in the LED Indicators section of Section 3 Qe mz EX1266 FUSE D Instruments d A Orwr HI SENSE 10 10 a ARMS ui 300v 0 4 WIRE T zs vw INPUT SS d bi 425 Vpk 1267 Instruments Qon LXI Own Q SENSE 4 WIRE 1588 2WIRE 1 SARMS FIGURE 4 1 INPUT PIN LOCATIONS AND SIGNALS Standard banana plugs can be used to interface other external instruments with the DMM The fuse located on the front panel is for current input protection and is user replaceable It is a 3 15 A 250 V fuse and can be replaced with VTI P N 35 0054 315 Rear Panel Connector 126 mainframes provide an onboard DMM with a five line analog bus routed through the backplane to the DMM This bus is available through rear panel DMM Bus connector that can be used to extend the analog backplane to other EX1200 series mainframes To ensure high signal integrity environmental noise and cable length should be accounted for prior to routing these lines 68
93. MM measurements the EX1200 should be warmed up for 30 minutes Auto zero As is true with most test equipment measurements are affected by temperature changes in the environment as well as component drift The auto zero feature of the EX1200 DMM compensates for these changes by using internal references to adjust the gain and offset of reading to ensure accuracy For this reason it is recommended that the auto zero feature always be enabled The additional operations however decrease measurement speed In cases where measurement speed is more important than accuracy the auto zero feature can be disabled which will nearly double the measurement speed For more information on auto zero refer to Auto Zero in Section 4 Cabling In most circumstances a shielded cable should be used to obtain the most accurate measurement The shield of the cable should be connected to chassis ground at the EX1200 and left floating at the DUT However if the device under test DUT is in an environment with a substantial amount of noise such as near a motor the shield should be attached to the ground of the device that is generating the noise to provide the most direct path to ground In 4 wire measurements if all four wires are enclosed with a common shield the above practices should be followed If there is a shield around both the Sense pair of wires and the Current Source wires both shields may be connected to chassis ground If only one pair of wir
94. MP ACTIVE 0 DEVICE ACTIVE 0 Decrement TRIG COUNT SAMP IMM Wait for swsamP SAMP Event ee us INITILIZED 1 ARM ACTIVE 0 SAMP TRIG ACTIVE 0 LAYER SAFE Doy SAMP ACTIVE 1 DEVICE ACTIVE 0 Decrement SAMP COUNT Acquire ADC Counts DEVICE Store Reading LAYER A INITILIZED 1 ARM ACTIVE 0 TRIG ACTIVE 0 SAMP ACTIVE 0 Calibrate DEVICE ACTIVE 1 Range Delay Reading Range Up Down UNDER LIMIT FIGURE 4 3 TRIGGER MODEL Basic EX1200 DMM Operation 73 VTI Instruments Corp IVI COM Programming Interface The IVTEXDMM Trigger interface provides properties and methods for setting the input trigger The IVTEXDMM Trigger Multipoint interface provides properties and methods for setting the sample trigger and setting the measurement complete output trigger TAKE THE MEASUREMENT Once the DMM has been configured the measurement must next be initiated Once initialized the DMM moves from the Idle State through the trigger model IVI COM Programming Interface The IVTEXDmmMeasurement interface provides properties and methods for reading the FIFO count and measured values Initiate method can be used for initiating the DMM FIFOCount can be used to get a count of the measured values available in the DMM after it is initiated RETRIEVE THE DATA The DMM stores the measured samples into FIFO until retrieved This data can be accessed upon completion of the measurement and must be r
95. Preparation for Use 47 VTI Instruments Corp 3x Per Foot Rear Side 4x Per Foot Front Side FIGURE 2 11 TABLE TOP FEET INSTALLATION DIAGRAM EXPLODED FRONT VIEW 48 EX1200 Series Preparation for Use www vtiinstruments com Rack Ear Installation Option P N 70 0370 101 The rackmount installation option includes all the parts necessary to mount an EX1200 system to the front of a standard test rack Required Tools 1 2 Phillips screwdriver Parts List Item Qty Description 1 2 Bracket Rack Ear 1267 68 69 41 0494 010 2 2 Handle 0 25 dia x 1 25 H X 4 0 L 8 32 Aluminum Black 37 0254 000 3 4 Screw 8 32 x 1 2 Flat Head Phillips 82 Stainless Steel 37 0129 050 4 8 Screw 6 32 x 3 8 Flat Head Phillips 82 Stainless Steel 37 0173 037 Assembly Procedure 1 Place the chassis a protected work surface with its input connectors facing front 2 Using a 2 Phillips screwdriver install the rack ears P N 41 0482 009 on the front of the EX1200 using four 4 6 32 x 3 8 flat head Phillips stainless steel screws P N 37 0173 037 for each rack ear 3 Install the handles P N 37 0254 000 using two 2 8 32 x 1 2 flat head Phillips screws 1x Per Side 4 Per Side 1x Per Side FIGURE 2 12 RACK EAR INSTALLATION DIAGRAM EXPLODED FRONT VIEW EX1200 Series Preparation for Use 49 VTI Instruments Corp Rackmount Installa
96. Ps do not lock by default except for those of switch plug in modules When a switch SFP is initialized the SFP attempts to get a lock If it is successful the SFP opens in Synchronous Control mode If the attempt fails the switch opens in Monitor Only mode Both Synchronous Control and Asynchronous Control modes require a lock For more information on switch SFP operating modes see Switch Soft Front Panels in Section 7 Once established a lock cannot be broken by any other session If the lock is being held by some other active driver or SFP session the only ways to gain control of the mainframe is to either close the active session or to reboot the mainframe If a lock is established by an application that has crashed the mainframe will typically release the lock after the TCP timeout occurs EX1200s support a full function trigger model with a separate arm source and trigger source event structure For a complete explanation of the trigger model see Section 5 In summary an acquisition sequence is enabled with a trigger initialize command Scanning is then initiated upon the receipt of the programmed arm source event followed by the receipt of the programmed trigger source event Trigger and arm source events can be independently programmed from a variety of sources including Immediate Timer Digital I O the Trigger Bus and alarms 66 EX1200 Series Basic Mainframe Operation www vtiinstruments com SECTION 4 BASIC EX1200 D
97. Q 6 digit 100 uQ 0 0140 0 0070 11 7 mQ 39 0 mQ I 6 digit 1 mQ 0 0100 0 0010 39 0 mQ 390 mQ 3 KQ 6 digit 10 mQ 0 0100 0 0010 390 mQ 390 mQ 10 6 digit 10 mQ 0 0100 0 0010 390 mQ 3 90 Q 100 67 digit 100 mQ 0 0100 0 0009 3 90 Q 78 0 Q 100 Q 5 digit 1 mQ 0 0150 0 0070 12 0 mQ 42 0 mQ I 5 digit 10 mQ 0 0100 0 0014 42 0 mQ 420 mQ 3 5 digit 100 mQ 0 0110 0 0020 420 mQ 420 mQ 10 5 digit 100 mQ 0 0110 0 0020 420 mQ 4 20 Q 100 5 digit 10 0 0100 0 0012 4 20 Q 58100 100 Q 4 digit 10mQ 0 0160 0 0150 27 0 mQ 81 0 mQ I 4 digit 100 mQ 0 0150 0 0030 81 0 mQ 720 mQ 3 KQ 42 digit 19 0 0150 0 0040 720 mQ 720 mQ 10 4 digit 19 0 0150 0 0040 720 mQ 7 20 Q 100 4 digit 100 0 0150 0 0025 7 20 Q 84 0 Q Over range 20 beyond range EX1200 Series Introduction 21 VTI Instruments Corp BURDEN VOLTAGE VRMS FOR ACI VDC FOR DCI AC CURRENT RANGE 1 mA DCI only 0 1 V 10 mA 0 1 V 100 mA 0 6 V 1A 0 4 V 3A 0 9 V Over range 20 of range except 3 range CURRENT RANGE ACI amp DCI 1 mA DCI only 68 1 Q 10 mA amp 100 mA 419 1A amp 3A 010 DCV DCI 2W R AND 4W R READING RATE INTEGRATION TIME READ
98. Sync Driver IViSoftwareModuleName VTEXScanner VTI Scanner Driver VTEXSwitch VTI Switch Driver 2 2 3 5 3 i gt Rio 1 FIGURE 7 19 LXI IDENTIFICATION PAGE EX1200 Series Maintenance 129 VTI Instruments Corp BLINK LAN INDICATOR This action page is used to identify the EX1200 that is being commanded in the current session When the Turn on button is pressed the LAN LED located on the front panel of the EX1200 will blink When the Turn off button is pressed the LAN LED returns to its normal operation CHANGE PASSWORD Ge fex 123191 locas Vii instruments Corporation Blink LAN Indicator Windows Internet Explorer ie Favorites Eg VTI Instruments Corporation 200 Bink LAN Indic MI au Instruments SFP Soft Front Panel Network Configuration a V Time Configuration LXI Synchronization LXI Identification 25 Blink LAN Indicator Change Password Upgrade DOC Reset 1 Reboot FIGURE 7 20 DEVICE IDENTIFY WEB PAGE 410 1 Once connected to the EX1200 the user should define a password No password is defined by default To create a password click on the Change Password link in the command menu then enter the desired password in both text fields From this point forward pages that modify instrument configuration e g SFP require this password to initial
99. System 13 EX1200 Series 1 U Full Rack Mainframe Dimensional 15 EX1200 Series 1 U Half Rack Mainframe Dimensional Diagram 16 EX1200 Series 3 U Mainframe Dimensional 17 EX1200 Series 3 U Mainframe Front 1 18 EX1200 Series DMM Specifications essent enne enne nennen tree tren tren 19 Explanation of Specifications 27 Maximizing Measurement Performance esses 29 SECTION 2 C 31 PREPARATION FOR USE edt ROSE e ete te RR E RD MERE RR EON 31 UPA EA eee ceed Beebe Rok eae tia ee eT eo 31 Determine System Power Requirements 31 Installation 1 EE 31 Warm Up Time 5 mde Aedes Ree 32 Plug in Module Installation 02220 0 00 0000 32 Removing Plug in 1 442222 1 01000000 ens 33 EX1202 EX1262 Mainframe Installation Options 0 33 EX1206 EX1266 Mainframe Installation Options 2 66 42 3U Mainframe Installation Options 47 Blanking Panel eee chins sted e ones eden ae des ORO di
100. X1200 at power up initialization without having to manually set it on the EX1200 The DHCP server configuration provides a centralized controlled database of assigned IP addresses preventing accidental assignment of the same IP address to multiple instruments Consult your company s Information Technology department for assistance VXI 11 Device Discovery is also supported by the EX1200 This allows all EX1200s on a local network to be found without knowledge of their MAC address or IP address with the use of a broadcast message Should problems arise with network configuration please refer to Network Troubleshooting in Section 2 for assistance 124 EX1200 Triggering www vtiinstruments com instruments Corporation EX1 200 Network Configuration Windows Internet Explorer Go vB betes l ex 122749 cali cal Bt uve search ie Favorites i VTI Instruments Corporation 1200 Network Conf m EX1 200 Network Configuration Instruments index IP Address Source e SFP Soft Front Pane Host Configuration network Configuration c5 MN Description EX1200 122749 Static IP Configuration rime Configuration LXI LXI Synchronization 1D LXI Identification 362 Blink LAN Indicator x fa Upgrade aa Change Password Subnet Mask 255255
101. XI Identification lt Blink LAN Indicator TN Change Password Upgrade Reset Reboot FIGURE 7 24 COMPLETED PLUG IN MODULE FIRMWARE UPGRADE 132 EX1200 Triggering www vtiinstruments com Remove Temporary Internet Files The initial steps of firmware upgrade involve preparing the host PC The instructions that follow provide guidance for removing cookies from and clearing the cache retained by Java Clearing Cookies from Internet Explorer 8 For Internet Explorer 8 the following steps can be taken to delete existing cookies for other browsers please refer to the browser s on line help documentation 1 Open Internet Explorer 2 Click on the Tools icon and select Internet Options from the drop menu W mente RTI ET Dara WAG Systeme Windows OO Bosne tttm 011615 ar fy Favorites BF vTI Instruments VTI LXI Instruments Data Acquisi 11 Reopen Last Browsing Session M E Pop up Blocker m Precision A entatior contact us m enu lanage Add ons Instruments S i OX Work Offline Compatibility view Compatibility View Settings E Full Screen Toolbars Explorer Bars lt gt gt Developer Tools Suggested Sites windows Messenger 970 Connection Problems integrity of aircr 3 When the Internet Options window appears click on the Delete button in the Browsing history sectio
102. ac filter The Medium Filter option provides a compromise between the speed and accuracy of the other two filters For No options are provided For Q2W amp O4W Provides the HI I and LO I options The HI I option uses the high test current value while the LO I uses the low current value Only the 10 and 100 ranges offer two current sources this option will have no effect on other ranges e Input Indicates whether the input is from an Internal source or from the banana jacks on the DMM s Front Panel EX1200 Series Maintenance 117 VTI Instruments Corp Digits Indicates the number of significant digits that will be used when measurements are taken Note that this property and Aperture Time are interrelated hardware settings Thus changing one affects the other Optional Settings Some functions require optional settings These settings are displayed only if a function requiring them is selected Otherwise this space is left blank These options apply only to ac and dc current measurements Minimum Specifies the minimum expected frequency Maximum Specifies the maximum expected frequency These options apply only to frequency and period measurements Voltage Range select the voltage range that will be used when the frequency period measurement will be made Same options apply as for the DCV and ACV modes above These options apply only to temperature measurements When Thermocouple is selected as the trans
103. acks of the EX1200 DMM using suitable connectors Although not preferred in fixed installation measurements of this type can be used to quickly make readings and troubleshoot field wiring issues Sense HI Input HI Input LO Sense LO DMM Front Panel Frequency Source TABLE 4 8 DMM CONNECTIONS FOR FREQUENCY MEASUREMENTS Connecting a frequency signal via the EX1200 DMM bus requires a making connections similar to those used for voltage measurements DMM Backplane 015 Idd IHS Idd OT Idd Frequency Sources Multiplexer Cards EX1200 Mainframe TABLE 4 9 FREQUENCY MEASUREMENT CONNECTIONS VIA EX1200 DMM Bus 90 Basic EX1200 DMM Operation www vtiinstruments com TEMPERATURE MEASUREMENTS EX1200 s internal DMM can make temperature measurements by connecting sensors to its inputs By doing so it can be used as a high channel count data logger Three categories of sensors are supported thermocouples RTDs resistance temperature devices and thermistors Table 4 10 indicates each category and the types of sensors supported by the EX1200 DMM Category Built in Sensor Support Custom Sensor Support Thermocouple B E J K N R S T Cannot be defined at the instrument level RTD PT100 D100 F100 PT385 PT3916 Ro reference temperature or or 9 or delta Thermistor 2 2 5 10 curve fitting constants
104. are used when making Internet connections By default Java will use the network settings in your web browser Only advanced users should modify these settings Network Settings Temporary Internet Files Files you use in Java applications are stored in a special Folder For quick execution later Only advanced users should delete files or modify these settings www vtiinstruments com 4 When the Temporary Internet Files window opens click the Delete Files button A confirmation dialog box will appear Click to OK button delete the cache Files SEINES Location Select the location where temporary files are kept 2vem VXITECH Application Data Sun Java Deployment cache Disk Space Select the compression level for JAR files None Set the amount of disk space for storing temporary files Restore Defaults EX1200 Series Maintenance 135 VTI Instruments Corp SECTION 8 PROGRAMMING PROGRAMMING REFERENCES EX1200 systems ship with several programmer s guides that define APIs and provide practical examples which assist the programming with sequencing syntax and the use of other IVI specified APIs These guides include VTEXSwitch Programmer s Manual P N 82 0117 000 VTEXScanner Programmer s Manual P N 82 0128 000 VTEXSystem Driver Programmer s Manual P N 82 0125 000 Standard IVI APIs can be found at the
105. as time synchronization down to 50 ns Resolution 25 ns 14 EX1200 Series Introduction www vtiinstruments com EX1200 SERIES 1 U FULL RACK MAINFRAME DIMENSIONAL DIAGRAM EX1206 66 Top View 17 27 in 438 66 mm 17 22 in 437 39 mm EX1206 66 Side View X X 90202020 RR X X CO SE X XC X o Cr e o o o o O O O 9 9 0 0 6 0 0 60 6 6 G O O O O 0 9 0 0 0 0 0 0 0 0 Odi 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Oa O O OO OO o o 9 9 C 0 0 9 9 9 9 0 0 0 0 0 0 0 0 6 6 0 0 0 0 6 6 6 6 6 6 50 600 OOO OWE C666 60 0 6 OO O66 OOOO OO GO e DOOR TUO Pees Cara Pema rare Ogee DR OK O GO0000 C0000 o ex OQ o 9 9 9 6 9 at 5 KLAN Kee Ke Instruments cS Cys CSS amen e f 0000 000 of AS o GR COOP vst 0000900000065 DMM BUS IN EX1200 Series Introduction 15 VTI Instruments Corp EX1200 SERIES 1 U HALF RACK MAINFRAME DIMENSIONAL DIAGRAM 17 22 in 437 39 mm EX1202 62 Top View EX1202 62 Side View CDa e e 59525252626252525252525252225252525252525252525252525 l le a 43 942 mm S SS SESS GS SSS ESAS ISG OF 16 EX1200 Series Introduction www vtiinstruments com EX1200 SERIES 3 U MAINFRAME DIME EX1267 Front View SIONAL DIAGRAM 5 22 in 132 59
106. asurements as well RESISTANCE MEASUREMENTS The EX1200 DMM offers two methods for measuring an unknown resistance 2 wire and 4 wire These methods are discussed below 2 Wire Resistance Measurements When a 2 wire resistance measurement is made the EX1200 DMM sends a known dc current also referred to as an excitation or test current through the unknown resistance Rpyr and then measures the resulting dc voltage TEST Rpur Riran Rpgap This calculation assumes the that the leads have the same resistance The DMM then calculates the resistance by taking the ratio of the measured voltage over the supplied current In this method the test current is passed through the DMM s HI and LO terminals and the voltage developed between these terminals is measured However since the connecting wires leads are in series with resistance being measured the lead resistance is added to the resistance measured This lead resistance error is inherent to 2 wire measurements When the lead resistance small compared to the this error it typically negligible Sense HI Input HI Input LO Sense LO EX1200 DMM Resistance Source FIGURE 4 12 DMM CONNECTIONS FOR 2 WIRE RESISTANCE MEASUREMENTS 86 Basic EX1200 DMM Operation www vtiinstruments com Minimizing Lead Wire Resistance Errors While the best way to minimize lead wire resistance is to use the 4 wire method thi
107. ateway Agilent E5810A 8 5 digit DMM Agilent 3458A Function generator Agilent 33220 or the Agilent 33120A Calibrator Fluke 5700A Series I7 Calibrator amplifier Fluke 5725A used to measure the 3 A limit 1200 DMM calibration verification cable V TI P N 52 0807 000 Ethernet switch Ethernet cables straight cables GPIB cables PC with Windows XP Vista 512 MB RAM and a Pentium 1 GHz or faster Software Needed A web browser Internet Explorer Firefox etc with Java support Java Runtime Environment The latest version of EX1200 firmware available on the VTI Instruments web site Bonjour optional used to discover the EX1200 requires use of IE Version 6 or higher Agilent Connection Expert optional used for instrument discovery if Bonjour is not used NOTE Before performing calibration ensure that the EX1200 mainframe has the most current firmware version available It can be downloaded from www vtiinstruments com Refer to the Upgrade discussion in Section 7 for assistance more information on updating firmware SETTING UP THE INSTRUMENTS 1 Connect a GPIB cable from the LAN GPIB gateway to the DMM 2 Connect a GPIB cable from the LAN GPIB gateway to the function generator 3 Connect a GPIB cable from the LAN GPIB gateway to the calibrator 4 Connect an Ethernet cable from the PC s LAN port to the Ethernet switch 5 Connectan Ethernet cable from the Ethernet Switch to the LAN GPIB
108. ator Minimum Indicates the smallest allowed value of the reading Maximum Indicates the largest allowed value of the reading Error Indicates the difference between the Reading and Reference Error Ratio Indicates the ratio of the error to the allowed error band The closer the value is to zero the better the result If this value is below 100 then the reading exceeds its minimum if above 100 the reading exceeds the maximum Pass Fail If the measurements are within tolerance Pass is indicated If the adjustments are not within tolerances Fail is indicated Save button When clicked the calibration or verification data can be saved to a csv file Clear button When clicked all the data in the results field will be erased EX1200 Series Maintenance 123 VTI Instruments Corp NETWORK CONFIGURATION The EX1200 Network Configuration page can be seen in Figure 7 15 By default the EX1200 will attempt to locate a DHCP server If one is found the IP address assigned by the DHCP server will be assumed along with subnet masks gateway etc Otherwise after a timeout of 20 seconds the unit will attempt to obtain an IP address by using Auto IP 4 Dynamic Link Local Addressing Auto IP is a mechanism for finding an unused IP address in the IANA assigned range 169 254 169 254 16 where X is in the range to 254 and Y is in the range 0 to 255 The device will first attempt to obtain the specific address 169 254
109. c settings field Calibration tab irren teet E SR RR EENEES C measurement field eerte tete erect 8 6 d option settings calibration Queen erattu ssi dia inertia readings field voc 2e eoo repose erdt equipment saved configurations eese software software trigger button change password web page status display field sse Systeni 55 eicit recisi tieniti SNE ra EREE aie eee eae common mode rejection fab bar re common mode voltage Er trigger settings connecting and disconnecting line power sees 53 driver installation connectors IVI shared components eene DIO 63 switch instrument driver system LXISync instrument driver 2221 55 Bie rns roe RE HERE ENERO ERES 63 trig Ser DUS i re eoe erede eee ee e 64 EX1200 Series Index 153 VTI Instruments Corp E 1202 1262 installation options rack ear dual half rack rack ear single half rack rackmount dual half rack a rackmount single half rack 2 tabletops ace pee eee en EX1206 EX1266 installation options 2 TACK CALS A 46 PACKIMOUME EM 47 tabletop extractor handle
110. ce FIGURE 4 7 MAGNETIC LOOP NOISE Basic EX1200 DMM Operation 81 VTI Instruments Corp Noise Caused by Ground Loops When measuring voltages in circuits where the DMM and the DUT are referenced to a common earth ground but at different points a ground loop is formed As shown in Figure 4 8 any voltage difference between the two ground reference points V ground causes a current to flow through the measurement leads This causes errors such as noise and offset voltage usually power line related which are added to the measured voltage MEN HI VresT ES gt es DMM Ri DUT Source Resistance Imbalance e LOO Multimeter Isolation Resistance Voltage Drop on Ground Bus p Ri gt 10 GQ e L Voround FIGURE 4 8 A GROUND LOOP The best way to eliminate ground loops is to maintain the DMM s input isolation from earth ground by not connecting the input terminals to ground If the DMM must be earth referenced be sure that the DMM and the DUT are connected to the same common ground point This will reduce or eliminate any voltage difference between the devices It is also recommended that the DMM and DUT be connected to the same electrical outlet whenever possible AC VOLTAGE MEASUREMENTS The EX1200 DMM can measure the true RMS ac voltages within the limits specified AC voltage ACV measurements differ
111. ce Discovery is also supported by the EX1200 This allows all EX1200s on a local network to be found without knowledge of their MAC address or IP address with the use of a broadcast message To return an EX1200 to the default network settings the Reset Button can be used For more information see Reset Button in Section 3 NETWORK TROUBLESHOOTING If an error occurs when trying to discover the EX1200 see Web Page Operation in Section 7 for more information on discovery it may be necessary to change the network settings for the EX1200 and the host PC By using the following methodology most network related issues can be resolved 1 Restore the EX1200 s Default Network Settings 2 Determine PCs Network Settings 3 Set the EX1200 to Auto IP or Set the EX1200 to Static IP 4 Restore the Host PCs Network Settings 5 Using Multiple Network Cards EX1200 Series Preparation for Use 53 VTI Instruments Corp Restore the EX1200 s Default Network Settings It may be the case that the EX1200 is in an unknown network configuration The EX1200 can be returned to its default state by pressing the Reset Button located at the rear of the chassis 1 Power off the EX1200 2 Press and hold the reset button until the LAN LED flashes green approximately 5 s 3 Release the reset button Determine PCs Network Settings 1 Ensure that all host PC Ethernet connections are made that will be used while controlling the EX1200 If t
112. ce combined with the capacitance is large enough to where the RC time constant is significant Settling due to RC time constant effects can be quite long particularly when resistances above 100 kQ are measured For example certain types of precision resistors have a large lumped capacitance tied across its terminals to arrest noise In these cases taking a resistance reading without calculating the setting time results in an erroneous reading The same is true for when the input impedance of a power supply module is measured where the input does not have a large amount of capacitance In cases like this using the Auto Delay trigger setting may not help To reduce this error the settling time of the resistor should be manually calculated observed and this time should be programmed as the trigger delay see Trigger Settings in Section 7 for additional information on trigger delay Errors in High Resistance Measurements When measuring large resistances MQ or larger significant errors can occur due to insulation resistance and surface cleanliness To reduce errors of this type a clean high resistance system should be maintained Test cables and fixtures are susceptible to leakage though moisture absorption in insulating materials and dirty surface films Selecting the proper cable insulation can also reduce error Nylon and PVC are relatively poor insulators 10 when compared to PTFE Teflon 10 Leakage from ny
113. ch measure and control subsystem on the market today with the capacity to switch up to 576 channels of voltage or temperature in a 1U mainframe A variety of modules can be utilized to build a comprehensive switching system capable of routing dc to RF signals as well as power signals up to 16 A Input channels can be routed directly to an optional 6 2 digit DMM through an internal multiplexer bus to simplify cabling Analog and digital I O modules can be added to control external devices The EX1200s provide a scalable architecture available as a half rack 1U mainframe capable of accepting up to two plug in modules in addition to the optional DMM as well as a full rack 1U version capable of accepting up to six plug in modules and the optional DMM This level of scalability offers system developers the ability to easily construct small to large systems with a common platform that maximizes reusability of engineering development Optimized Performance EX1200s leverages the same technology that made VTI s VXI based SMIP switching family the most successful modular switching platform for high performance requirements in the most demanding and complex application spaces Now VTI makes this powerful cost effective solution commercially available for functional test systems process monitoring signal switching automotive ECM temperature data logging and cable harness and battery testing The primary functions of EX1200s focus on signal switchi
114. ches between the DMM Bus and front panel Note that certain switch cards and instruments can connect to the DMM Bus as well DMM Bus DB 9 Connector on Rear Panel DMM Front Panel Banana Jacks EX1200 Backplane Matrix Matrix EX1200 EX1200 4128 4128 Slot 1 Slot 2 FIGURE 4 2 DMM BACKPLANE CONNECTIVITY IVI COM Programming Interface Matrix DMM 1200 4128 Slot n The VTEXDmmlnputSelectEnum interface provides properties for setting the input connector 70 Basic EX1200 DMM Operation www vtiinstruments com CONFIGURE THE MEASUREMENT A simple DMM measurement can be configured by setting the function range and resolution There are many other parameters that may need to be configured depending on the type of measurement being performed This is explained in detail in later sections Function Selects the measurement type DCI ACV ACI 2 wire resistance 4 wire resistance temperature frequency or period e Range Selects the measurement range The range should be set to the closest possible range that is greater than or equal to the value passed as this parameter e Resolution Selects the measurement resolution The fastest aperture time that will provide this amount of resolution will be selected If the amount of resolution is not possible the longest aperture will be selected
115. cifications listed above as well as complying with all essential requirements of the Low Voltage Directive February 2010 Steve Mauga QA Manager 6 EX1200 Series Preface www vtiinstruments com GENERAL SAFETY INSTRUCTIONS Review the following safety precautions to avoid bodily injury and or damage to the product These precautions must be observed during all phases of operation or service of this product Failure to comply with these precautions or with specific warnings elsewhere in this manual violates safety standards of design manufacture and intended use of the product Note that this product contains no user serviceable parts or spare parts Service should only be performed by qualified personnel Disconnect all power before servicing TERMS AND SYMBOLS WARNINGS These terms may appear in this manual WARNING Indicates that a procedure or condition may cause bodily injury or death CAUTION Indicates that a procedure or condition could possibly cause damage to equipment or loss of data These symbols may appear on the product or in the manual ATTENTION Important safety instructions Indicates hazardous voltage Frame or chassis ground Indicates that the product was manufactured after August 13 2005 This mark is placed in accordance with EN 50419 Marking of electrical and electronic equipment in accordance with Article 11 2 of Directive 2002 96 EC WEEE End of life product can be returned to
116. cy Period Measurement enne nennen tren nest nest 88 Temperature Measurements ripe nae onmia Roba a eet idee 91 ct es ben eden au inedita aeneus 98 SECTION cR Dc 99 SCANNER OVERVIEW erecti FREU d pO ERI inae 99 REN ORAE NECI Rp REPERI ERR RR pet EM 99 Jeu LOI 101 TRIGGERING iiir p UD Srt eT IRE OR ER ER RETRO RU DP i DES 101 OVGEVIEW ii director ERR DR DARFUR ERES Et REEF REIR 101 SECTION 7 Pcr 103 WEB PAGE OPERATION eissi eere irte pee eerte n e eoi P ee ire otio 103 Introduction 103 General Web Page Operation eae di etie Mean dg eee teni eerie idi ee eee des 104 soft Eront Panel Mam Pages eite eee e e eie de e Mee aus ciclo i eet een 105 SOMEONE Panel TE 106 Instrument Soft Front Panel 6 sissies cre p RU ERR REESE 113 Switch Soft Front 5 rt rex re RO ROT UR PAREN RR HERR CR CARE EEE TR RERE 113 PMM Sott Eront Panel nct e ORDER GERNE NEU BR ED mto tes 116 DMM Calibration Web Page eee ee t ROS UO ERR Pe D RR rr D
117. d as the voltage is measured through the sense lines leaving from the HI and LO inputs essentially ignored The 4 wire resistance method is often used in automated test applications where long cable lengths numerous connections or switches exist between the multimeter and the DUT The recommended connections for 4 wire resistance measurements is shown in Figure 4 13 Input HI Sense Weis Sense LO Input LO EX1200 DMM Resistance Source FIGURE 4 13 DMM CONNECTIONS FOR 4 WIRE RESISTANCE MEASUREMENTS The desired resistance is calculated as 1 TEST Basic EX1200 DMM Operation 87 VTI Instruments Corp Common Error Sources The errors discussed previously for DC Voltage Measurements also apply to resistance measurements Additional error sources unique to resistance measurements are discussed below Self Heating Error When a current passes through a resistor heat is generated in the resistance source This is unavoidable When testing resistive devices a self heating error can occur When the DUT is heated the temperature of the DUT increases changing the DUT s resistance value The magnitude of this error depends on the DUT s temperature coefficient and thus cannot be specified To minimize this error it is best practice to minimize the time that the current is applied to Rpur Settling Time Related Errors In some cases the test lead resistan
118. d with regards to its output functionality and its static level to assume when enabled as an output When not enabled as an output a channel becomes tri stated preventing conflict with other potential voltage drivers Reference the port s electrical specifications in Table 3 1 for voltage tolerance limits and output drive capabilities Regardless of output functionality each channel provides constant input functionality That is the input level on each channel can be accessed without a specific enable function call Moreover the base functionality of the DIO channels is not affected by triggering scanning or any other instrument process Unless linked to a backplane trigger line as discussed below its operation is completely autonomous EX1200 Series Basic Mainframe Operation 61 VTI Instruments Corp When enabled as an output each channel also has the ability to generate a 1 us pulse upon command An example application of this pulse is to use the EX1200 to externally trigger another piece of test equipment The specific operation of the pulse depends on the static level programmed for that channel When a channel is programmed with a static level of high the pulse will be low going When a channel is programmed with a static level of low the pulse will be high going Each pulse generation requires a separate function call For expanded and more automated operation each DIO channel can be independently linked to any of the EX1200
119. damaging the switch card and the mainframe Avoid Electric Shock To avoid electric shock or fire hazard do not operate this product with the covers removed Do not connect or disconnect any cable probes test leads etc while they are connected to a voltage source Remove all power and unplug unit before performing any service Service should only be performed by qualified personnel Ground the Product This product is grounded through the grounding conductor of the power cord To avoid electric shock the grounding conductor must be connected to earth ground Operating Conditions To avoid injury electric shock or fire hazard Do not operate in wet or damp conditions Do not operate in an explosive atmosphere Operate or store only in specified temperature range Provide proper clearance for product ventilation to prevent overheating When selecting the installation location be certain that there is enough space around the power plug and the outlet so that they are readily accessible Do not insert the power cord into an outlet where accessibility to the plug cord is poor All unused slots should be closed with the dummy filler panels to ensure a proper air circulation This is critical to avoid overheating of the cards DO NOT operate if any damage to this product is suspected Product should be inspected or serviced only by qualified personnel Improper Use The operator of this instrument is advised that if the equipm
120. data In the same respect if the temperature configurations are deleted after the scan list is run and the user attempts to read the data an Bad Configuration Index error will occur This is the result of the EX1200 attempting to perform calculations without configuration data Basic EX1200 DMM Operation 97 VTI Instruments Corp SELF TEST The EX1200 DMM self test performs various hardware checks to ensure that the DMM is functioning properly The process is takes approximately two minutes to complete and checks the following Communication lines for the controller board digital FPGA and analog FPGA SRAM memory Power supply fuse and shut down capabilities Onboard temperature sensor DCV analog path DC protection circuit DCI analog path Current input fuse 2 and 4 wire resistance ohms overload ADC overload Frequency testing ACV testing 98 Basic EX1200 DMM Operation www vtiinstruments com SECTION 5 SCANNER OVERVIEW OVERVIEW The purpose of the VTEXScanner driver is to make it easy to control any VTI instrument where taking measurements on multiple modules is the primary purpose of the device While controlling the instrument in the same way is possible by using a combination of other VTI drivers this is often cumbersome due to the need to instantiate and initialize multiple drivers and arrange scanlists and triggers exactly The VTEXScanner driver abstracts many of these details and all
121. ducer the following options are available TC Type Select the TC that will be used during the measurement Select from Type B Type E Type J Type K default Type N Type R Type S or Type T Reference Junction Determines whether the reference junction is Fixed default or External Fixed Reference Junction If Fixed is selected above enter the temperature of this reference junction here When Thermistor is selected as the transducer the following options are available R Indicates the resistance value for the thermistor Select from 2252 Q 5 kQ 10 kQ default and User Resistance A B and C If User Resistance is selected for R the user must provide the Steinhart Hart equation coefficients for the thermistor Is Reference Junction check box When checked this indicates that the thermistor is being used as a reference junction When 2 3 4W RTD is selected as the transducer the following options are available Type Indicates the RTD type that will be used for measurement Select from PT100 default D100 F100 PT385 PT3916 User R A B and A If User is selected for Type the user must provide the Callendar Van Dusen equation coefficients for the RTD Is Reference Junction check box When checked this indicates that the RTD is being used as a reference junction Trigger Settings In the Trigger Settings field the user can change the setting that control the triggering capabilities of the DMM Trigger Input Each tim
122. e www vtiinstruments com MEASUREMENT BASICS eiit D the p mop m me rr REG e eR 70 Select an Input Connector mo espe p RUPID Te Di T RERO EIU 70 Configure the Measurement ee Dee OUR TRE TR ERROR eR 71 Configure Trissenng onte eget pee DURER DOOR Or DO RT sage 71 Take the Measurements tne RERO RU DEA 74 e PERPE BRUN 74 DM M FUNGCTIONS 55 505 75 Ranges beni empti eee DOR SOD em eben DU Pr 75 Resolution sco ics ore D REO HR EDU ER FEN DU ERREUR REEF 76 Integration Aperture TE 25 3 men ee ee eA one eben ihe TI AUTO im tete a gu Se Ince ep ERI rip eth IUS TI Enni c EDS 78 Math F nctions ren Een ei pere eee te parten ee petrae 78 DE Volt ge Measurements 5 nion pev ete Der RISO heeded a ee ebrei deer 79 AC Voltage Measurements eon qe eben teh bp 82 DC and AC Current Measurements tenen nest te teen ne sete trennen tenens 85 Resistance 2er prre eere pe ee eie eee pee peter Ape e teo ce eR ene Pepe erts 86 Frequen
123. e Indicates the input range the DMM will use when a measurement is taken The drop menu provides different ranges depending on the Measurement Mode that was selected For DCV and ACV the following ranges are available Auto Range On Auto Range Off Auto Range Once 100 mV 1 V 10 V 100 V and 300 V For DCI and ACI the following ranges are available Auto Range On Auto Range Off 10 mA 100 mV 1 A and 3 A Hz measurements are performed at 1 5 MHz range while 1 Hz measurements are at 0 3333 s For 2 and 4W measurements the ranges are Auto Range On Auto Range Off 100 1 10 and 100 The 2W also provides 1 10 MQ and 100 ranges NOTE When Auto Range is selected all measurements dynamically determine the most appropriate range Selecting Auto Range Off causes all future measurements to use the last actual range The Auto Range Once function is equivalent to using Auto Range On for one measurement then switching to Auto Range Off for the subsequent measurements e Option Provides various options depending the Measurement Mode selected above For DCV Provides a 10 M 2 or HIZ option The 10 M option should be used to minimize noise pickup while HIZ should to reduce loading errors For ACV ACI Hz and 1 Hz Provides High Filter Medium Filter and Low Filter options The High option utilizes the fastest but least accurate ac filter The Low option selects slowest most accurate
124. e 56 130 W ERR EQN HR RUP 26 Warm up Lie nee eee loaned REIP eR 30 34 WEEE Wis sss 7 www vtiinstruments com EX1200 Series Index 155
125. e a trigger input event occurs the DMM enters the Sample Trigger layer Source Indicates the event type that will cause a trigger input event These include Immediate External Software BPLO 7 Route This button appears when a backplane line BPLO 7 is selected for Source Clicking this button launches a dialog box that allows the user to select an external trigger line LXIO 7 DIOO 7 0 7 or ALARMO to connect to the chosen backplane line Slope For hardware trigger lines this parameter indicates the slope of level change either Rising or Falling that will cause a trigger input event The slope parameter has not effect when Immediate or Software is selected Count Indicates the number of trigger input events that will be accepted before returning to the Idle state Valid values are 1 and 1 to 2 147 483 647 where 1 sets an infinite count 118 EX1200 Triggering WWW vtiinstruments com Auto Delay checkbox When enabled the DMM delays the measurement until it detects that its inputs have settled Delay Indicates the time in seconds the DMM will wait after getting a trigger input event before proceeding to the Sample Trigger layer Valid values are 1 0 and 0 to 4294 967295 When set to 1 0 this is equivalent to using Auto Delay e Sample Trigger Specifies the sample trigger event that cause the DMM to take additional measurements For every sample trigger event the DMM takes one measuremen
126. e an Error page will appear To clear this error click on the login link The Login page will appear In the Password field enter the configured instrument password For additional information refer to the Web Page Operation discussion in Section 7 To reset the password to factory default click the Change Password link in the left side menu 142 EX1200 Series Maintenance www vtiinstruments com TIME CONFIGURATION When calibration is performed the time and date of calibration is recorded making it important to ensure that EX1200 s time is configured properly To determine the time click on the Time Configuration link in the command menu If the time is displayed incorrectly use the following steps to configure the time from the Time Configuration web page Select the correct Time Zone from the drop menu Set the Time Source to Manual Enable the Set Time checkbox Enter the date in the Date MM DD YYYY fields Enter the time in time in the Time HH MM SS fields using a 24 hour format Click the Submit button BIG Sear Instruments Time Zone None SFP Soft Front Panel Time Source Manual Set Time E 55 14 LXI LXI Synchronization Time Status Current Time Wed Dec 1 01 57 41 1999 ID LXI Identification 332 Blink LAN Indicator 2 Network Configuration 22 Change Password E U
127. e ee eee leh edP 51 Connecting Disconnecting Line Power 4022020010 0 000000 rennen etre tret trennen trennen 51 Software Installation ete ee eese t ense y et eiae pedi Nee eee 51 Diver Installation ete Eee ous ER dee ee Ee 52 Network Configur tior itte up due eiecit tree eger re REUS 53 Network Troubleshooting iei E eere ot estes sese ie ett 53 Time Configuration sir eneee eei ee EEEE EE Dre REPERI SEEE E eevee ce eR Ee ORE E RR ite pe ER 59 o 61 BASIC MAINFRAME OPERATION 56 61 Input ose eet ee DD RE EORR MERE ie eee 61 DMM enne one EUR He ER ON Meg PUSH 65 LED c 66 Locking seen Rae a eee tastes ae RP 66 TES ettet dee EUR eri ie EE dtes buie deti tee reete eese E E 66 SECTION petere 67 BASIC EX1200 DMM OPERATION 5 2 3 3 saves etr pe ERR PEERS ERE ENTE ne 67 OVERVIEW E 67 DMM Input Connections eterne te eterne EnRe ete Io eee ee eade see beste bte 68 2 EX1200 Series Prefac
128. e ient oe eot tente tt etus 115 Stats display Held e entero reinen 109 sweep wizard Switch Wizard errore eee e SNTP instruments scanlist field erento eere eene rene Hes switches software installation is Java runtime environment 54 154 EX1200 Series Index d I vases ae 14 switch soft front panels device info AD 118 monitor and control tab 0 116 thErMOCOUPIES 94 temporary internet files thermistor measurements cceeeseeeceeeceeeeseeseeeeeceeeeeceaeeseeneees DMM connections rennen fitting curve constants thermocouple measurements DMM connections csse etri rires erai etia dean 94 time cOBfIgur atiOR merecen 61 time configuration web page sese 131 TRIG event Trigger Businesses enne eer eee erede 64 65 68 trigger model eee reete 104 68 103 troubleshooting multiple network cards eene 56 59 true 8 004 2 1 160066 00000000 stessa ss see tna assa 28 85 U using multiple network cards seen 59 V Morlem VTEXDMM driver programming examples essere 69 VTEXScanner driver 9 VXI 11 device discovery een
129. e manipulated in this mode allowing for flexible reading rates Because of the correlation between filter bandwidth and reading rate choosing the correct filter to satisfy the bandwidth requirements for an application is important for measurement optimization Crest Factor It is often thought that the sine wave accuracy specification of a true RMS DMM apply to all waveforms This however is not the case The input signal can dramatically affect measurement accuracy of EX1200 DMM Because of this calibration and accuracy specifications are only applicable to sinusoidal waveforms Crest factor is a common way to describe the shape of a waveform Crest factor is a waveform s ratio between its peak value and its RMS value For a time continuous repetitive signal the crest factor is approximately equal to the square root of the inverse of the duty cycle The larger the crest factor the greater the energy contained in the higher frequency harmonics resulting in greater error It is important to consider the crest factor of input waveforms to determine the percent error contributed by them see Crest Factor for typical crest factors for most common waveforms Basic EX1200 DMM Operation 83 VTI Instruments Corp Waveform 196111109 Crest Factor Sine 1 414 Full wave Rectified Sine 1 414 Half wave Rectified Sine Triangle 1 732 BEES Square Wave Symmetrical
130. e of the capacitance between the LO input terminal and earth approximately 200 pF for the EX126x the source experiences a loading differential depending on how the input is applied The magnitude of this error is dependent upon the source s response to this loading The DMM s measurement circuitry while extensively shielded responds differently in the backward input case due to slight differences in stray capacitance to earth Because of this the 100 V ac and 300 V ac ranges may latch up for high voltage high frequency backward inputs Therefore only drive the high terminal when measuring ac voltages The grounding techniques described for dc common mode problems can be used to minimize ac common mode voltages refer the Common Mode Rejection discussion earlier in this section DC AND AC CURRENT MEASUREMENTS The EX1200 DMM can directly measure ac and dc current ACI and DCI within its specified limits Note that the front panel terminals are different for connecting a current signal I and LO Sense HI Input LO Sense LO DMM Front Panel Current Source FIGURE 4 11 DMM CONNECTIONS FOR CURRENT MEASUREMENTS The current signal input is passed through an internal precision shunt resistor 4 1 for 10 mA and 100 mA ranges 0 1 for 1 A and 3 A ranges and 68 1 for DCI 1 mA range and the resultant voltage drop is measured Using this value and the shunt resistor value the current input level is calculated In order to prot
131. e right EX1200 using three 3 6 32 x 3 8 flat head Phillips stainless steel screws P N 37 0114 025 4 Install the rear mating bracket P N 41 0493 007 on the right EX1200 using two 2 4 40 x 0 187 pan head Phillips screws P N 37 0011 018 5 Connect the two EX1200s by installing two 2 4 40 x 3 8 flat head stainless steel Phillips screws P N 37 0100 037 through the right EX1200 capture the front mounting bracket Then use two 2 4 40 x 0 187 pan head Phillips screws P N 37 0011 018 to connect the rear mating bracket to the right EX1200 6 Place the EX1200 in the desired rack slot and secure the front rack ears with hardware provided with the rack 36 EX1200 Series Preparation for Use www vtiinstruments com FIGURE 2 5 DUAL HALF RACK EAR INSTALLATION DIAGRAM EXPLODED FRONT VIEW EX1200 Series Preparation for Use 37 VTI Instruments Corp Rackmount Installation Half Rack Width Option P N 70 0373 103 The rackmount installation option includes all the parts necessary to mount an EX1200 to the front and rear of a standard test rack Required Tools 1 2 Phillips screwdriver 2 5 16 wrench or socket Parts List Item Qty Description VTI P N 1 1 Bracket Rack Ear Single Half Rack EX1262 02 41 0493 009 2 1 Bracket Long Rack Ear Single Half Rack EX1262 02 41 0493 011 3 2 Bracket Unit Support EX 1202 62 41 0482 010 4 2 Bracket Rear Rack Support EX1202 62 41
132. e will include this data Likewise the device will only accept events that include the same LXI Domain data Wired Trigger Parameters Wired OR Bias indicates whether the Wired OR bias for each Trigger Bus channel LXIO through LXI7 is enabled or disabled LXI IDENTIFICATION This status page provides the user information about the EX1200 mainframe as well as all the plug in modules that are installed Firmware driver and network information can also be collected from this page Note that the page name adjusts to identify the model of the mainframe as seen in 1266 LXI Identification show in Figure 7 19 Ius trust Corporation EXI 266 Windows Interner Exponer Go Lm lex 123234 local ijidentificstior m e Search TE iy Favorites Instruments Corporation EX1266 Mc EX1266 Lx Identification LXI Instruments Manufacturer VTI Instruments Corporation Model EX1266 FirmwareRevision 330 HomepageURL http www vtiinstruments com DeviceURI http ex 123234 local cgi bin Slot 1 DeviceURI http ex 123234 local cgi bin Slot 5 DeviceURI http ex 123234 local cgi bin Slot 6 UserDescription EX1266 123234 InstrumentAddressString TCPIP ex 123234 local INSTR IPAddress 10 1 4 7 SubnetMask 255 255 0 0 MACAddress 00 0D 3F 01 0C F6 DHCPEnabled true AutolPEnabled true IViSoftwareModuleName VTEXSystem VTI Lxi
133. ect the shunt resistor and the DMM from the high current spikes the input current is passed through a fuse described earlier When making current Basic EX1200 DMM Operation 85 VTI Instruments Corp measurements with motors and other devices with a high starting current be certain that the current rush does exceed the fuse s rating The shunt resistance value applicable for each current range varies making the selection of the proper range crucial for DMM safety For example if a 2 A current input signal is being measured while the DMM s current range is manually set to 100 mA can seriously damage the DMM circuitry When current is passed through a switch multiplexer the path dedicated for current measurements must be used For example the EX1200 3048 has three dedicated channels for current measurement While making voltage measurements the DMM is connected in parallel with the DUT measurement point and hence will not interrupt DUT operation Current measurements however need the DMM to be placed in series with a wire in which the current needs to be measured If current measurements are required on more than one channel wire without disturbing interrupting the current path an MBB Make Before Break switch topology must be selected The previous discussions regarding DCV measurements and ACV measurements such as ac filter settings aperture PLC count integration time etc are applicable to the respective current me
134. elected rather than the 10 V range as the input is within 120 of the range value If however 1 3 V is fed to the DMM the 10 V range would be used Refer to Table 4 2 for valid ranges the auto range mode can select The auto range mode is useful when the incoming signal voltage range is unknown or when it varies largely over time However auto range requires more time to complete the measurement slower scan rates due to increased internal processes than if a manual range is selected Auto Range OFF and Auto Range Once In Auto Range OFF mode the last selected range whether it was selected automatically or manually is used This feature can be used to turn off measurement auto ranging and fix the range to its last know best fit When Auto Range Once is used auto ranging is performed for the first measurement only and automatically disabled for further readings scans Range Delay When the range of a function is changed the DMM requires time to settle to the new range The range change delay is the amount of time the DMM takes to settle between measurements for the same function on different ranges when in auto range mode This affects the speed of the scanning operation It is advised to group the channels in such a way that the number of range changes are minimum in a given scan cycle The range delay is the inverse 1 x of the range change event specification on page 19 Function Range Change Event Range
135. ems This flexibility provides system developers with true OS independence without the need to sacrifice the convenience that instrument drivers deliver 12 EX1200 Series Introduction GENERAL SPECIFICATIONS www vtiinstruments com EX1200 SYSTEM SPECIFICATIONS MODULE SLOTS 1 U Mainframes EX1202 1262 Two standard plug in module PIM slots plus 6 2 digit DMM EX1206 EX1266 Six standard PIM slots plus 6 digit DMM 3 U Mainframes EX1208 EX1268 Sixteen standard PIM slots plus 6 2 digit DMM DIMENSIONS 1 U Mainframes EX1202 EX1262 Embedded rack U mainframe 17 22 D 8 61 W 1 75 EX1206 EX1266 Embedded 1 rack U mainframe 17 22 D 17 27 W 1 75 H 3 U Mainframes EX1208 EX1268 Embedded 3 rack U mainframe 19 49 D 16 72 W 5 22 H Note Add 0 5 to depth for DMM handles Note Add 1 0 to depth for DMM handles WEIGHT 1 U Mainframes EX1202 EX1262 EX1206 EX1266 3 U Mainframes EX1208 EX1268 4 9 165 2 3 kg 7 1 Ibs 3 2 kg 16 2 165 7 4 kg ENVIRONMENTAL Operating temperature Operating altitude Operating humidity Storage temperature Storage altitude Storage humidity Shock and vibration 0 C 55 C 10 000 ft 3 000 m maximum 5 95 non condensing 0 C 30 C 5 75 non condensing 30 C 40 C 5 45 non condensing 40 C 50 per 3 8 2 of MIL PRF 28800F Class 3 40 C 70 C 15 0
136. ent is used in a manner not specified in this manual the protection A provided by the equipment may be impaired Conformity is checked by inspection 8 EX1200 Series Preface www vtiinstruments com SUPPORT RESOURCES Support resources for this product are available on the Internet and at VTI Instruments customer support centers VTI Instruments Corp World Headquarters VTI Instruments Corp 2031 Main Street Irvine CA 92614 6509 Instruments Fax 949 955 3041 VTI Instruments Cleveland Instrument Division 5425 Warner Road Suite 13 Valley View OH 44125 Phone 216 447 8950 Fax 216 447 8951 VTI Instruments Lake Stevens Instrument Division 3216 Wetmore Avenue Suite 1 Everett WA 98201 Phone 949 955 1894 Fax 949 955 3041 Instruments India Pvt Ltd 3174 75 Millers Road Bangalore 560 052 India Phone 91 80 4040 7900 Fax 491 80 4170 0200 Asia Support Phone 852 9177 6127 Technical Support Phone 949 955 1894 Fax 949 955 3041 E mail support vtiinstruments com Visit http www vtiinstruments com for worldwide support sites and service plan information AMETEK ADVANCED MEASUREMENT TECHNOLOGY EX1200 Series Preface 9 VTI Instruments Corp SECTION 1 INTRODUCTION FEATURES High density Switch Subsystem with Scanning Measure and Control The EX1200 systems EX1200s are the highest density scanning swit
137. ents which allows it to take multiple samples and average them by integrating them over a fixed period of time This time is referred to as the aperture time and is usually measured in power line cycles PLC counts One PLC is equal to the time period of the mains power voltage waveform i e for a 60 Hz mains power 1 PLC 16 67 ms whereas for a 50 Hz mains power it is 20 ms If the integration time is set to a multiple of PLCs these errors and their harmonics will average out to approximately zero This is however only applicable for dc measurements True RMS The internal DMM of EX126x mainframes measure the root mean square RMS value of the applied waveform unlike the average measurement instruments As a result the values returned by the EX1200 DMM are closer to the readings of an analog instrument A complex algorithm calculates the true RMS value of the applied waveforms refer to the Crest Factor section for errors related to measuring non sinusoidal waveforms The inputs are always ac coupled thus removing all dc components AC Signal Filters The EX1200 DMM has three different ac filters to allow for a balance between low frequency accuracy and faster settling times for ac voltage and current measurements Selection of the appropriate filter improves the accuracy of reading as well as the scanning speed Remember that the minimum frequency input of the Low filter is 3 Hz This means that the dc component of non sym
138. equence to generate waveforms or set control levels and can be synchronized with measurement inputs Digital I O modules are also available and can be used to control external devices such as relay coils or as bus emulation with pattern generation capability of up to 10 MHz Inputs can be constantly monitored independent of the scanlist with an event detector in order to detect fault conditions that must be immediately serviced by the test system Fast Throughput The full featured scanlist and tight synchronization with the internal DMM minimizes processor overhead and reduces the overall test execution time Channel lists can be stepped through in sequence and synchronized with DMM measurements No processor intervention is required thus the overall time to complete test can be limited to integration settling time of DMM and settling time of relays Low Cost of Ownership EX1200s can be used to mix thermocouple RTD thermistor and voltage channels in a single mainframe to offer maximum flexibility for multiple applications and seamless network integration with other instruments This scalable architecture in a small footprint optimizes the cost channel across a wide range of channel counts The Ethernet based communication interface is based on an industry standard that is built to stand the test of time and eliminates concerns related to interface obsolescence and support cost commonly found on PC based architectures Since EX1200s inter
139. ermining the Auto IP address is discussed in the Network Configuration discussion in Section 2 Other discovery methods such as VXI 11 can be used as well EX1200 Series Maintenance 103 VTI Instruments Corp GENERAL WEB PAGE OPERATION When initial connection is made to the EX1200 the instrument home page Index appears see Figure 7 2 This page displays instrument specific information including Model Manufacturer Serial Number Description LXI Class LXI Version Hostname MAC Address IP Address Netmask Instrument Address String Firmware Version IEEE 1588 Time Vii instruments Corporation AIZOO Windows Internet HEB http ex 122096 local on VTI Instruments Corporation 1200 Index Instruments Index Manufacturer Instruments Corporation SFP Soft Front Panel Serial Number 122096 Description EX1266 122096 Network Configuration 9 Class 11 Time Configuration LXI LXI Synchronization 00 0D 3F 01 0B 00 10 1 4 52 ID LXI Identification 255 255 0 0 TCPIP 10 1 4 52 INSTR 366 Blink LAN Indicator Firmware Version 3 3 0 amp Change Password IEEE 1588 Time 944157672 Upgrade FIGURE 7 2 EX1200 MAIN WEB PAGE The Index is accessible from any other instrument page by clicking on the EX1200 web page header The EX1200 Command Menu is
140. es is shielded these should be the sense lines and the above practices should be observed The user should consider they type of cable being use when taking measurements Transient errors may occur when initial contact is made if the input connector and mating connector are at different temperatures and are made of dissimilar metals This can create a thermoelectric voltage which is a common error source If both the EX1200 DMM and the mating connector are at the same ambient temperature this error typically dissipates to less than 0 1 C within 3 minutes However if a mating connector at room temperature is plugged into a DMM at a substantially different ambient temperature a significant initial error may appear This error will also take longer to decay to a level of insignificance This error mechanism is not affected by calibration and is avoided by allowing for a thermal equilibrium delay after initial insertion To reduce the affect of thermocouple voltages and temperature variations in low level voltage measurements it is recommended that connections be made using copper to copper crimped connections In addition to ensuring thermal stability to ensure the highest degree of reading reliability cables used with the mating connector should be insulated with dithiolate High Resistance Measurements When making high resistance measurements it is important to take test cable leakage due to insulation into account Cable jackets with poor
141. etrieved to be read The data is automatically deleted from FIFO once it has been retrieved IVI COM Programming Interface The IVTEXDmmMeasurement interface provides properties and methods for reading the FIFO count and measured values Read and ReadMultiPoint can be used to retrieve the measured value without timestamp Read will be used for retrieving single measurement at a time whereas the ReadMultiPoint can retrieve a block of data ReadTimeStamped and ReadMultiPointTimeStamped can be used for retrieving measured values with time stamp The ReadTimeStamped will be used for retrieving single measurement with timestamp whereas ReadMultiPointTimeStamped can retrieve a block of data with time stamp Note that all four read measurement functions initiate the DMM and retrieve the measured values whereas fetch only retrieves the measured values without initiating the DMM 74 Basic EX1200 DMM Operation www vtiinstruments com DMM FUNCTIONS RANGE This section of the manual discusses each measurement function of DMM and aids in understanding some of the DMM specifications Understanding the operation of the DMM and each of its functions helps optimize the configuration of the DMM for measurement accuracy speed Note that DMM performance is the same whether the front panel or DMM Bus interfaces is used The examples provided in the following sections provide signal routing using only the front panel Some functions are common to t
142. eway Address field enter the same gateway address in the Determine PCs Network Settings step 9 Click Submit to save all changes made to the Network Configuration page 56 EX1200 Series Preparation for Use www vtiinstruments com is 41200 1 31 7911 CUnfTA Ur od 114902 Go E http ex 122760a local cgi bin network cg we Favorites m Instruments Corporation EX1200 Network Confi m 1 200 Network Configuration Instruments Network Configuration Static IP Configuration 5 rime Configuration Cah lentification _ FIGURE 2 18 EX1200 SET TO USE STATIC IP Restore the Host PCs Network Settings 1 2 3 4 Power down the EX1200 and reconnect it to the LAN in its desired location If the PC was originally set to use a static IP address use the procedure in Determine PCs Network Settings to change the PCs IP address back to its original state Power on the EX1200 and wait for the LAN LED to turn solid green Discover the EX1200 using LXI Discovery Tool as described in Web Page Operation in Section 7 Using Multiple Network Cards When multiple network cards exist in a single PC it may be necessary to define a static IP address to both the host PC NIC card that will interface with the EX1200 mainframe as well as the EX1200 itself This process is only necessary if a DCHP server is not
143. face over a standard LAN connection it is not affected by computer bus obsolescence Maintenance Friendly The EX1200 systems interface with the host computer using low cost readily available and lightweight Ethernet cabling In addition the switch modules are pluggable from the front resulting in very low MTTR simplified wiring to termination panels and a reduction in sparing costs The onboard relay monitor tracks relay actuations and stores the data in memory simplifying predictive maintenance Embedded monitor and control panels provide immediate access to instrument functions and require no third party software beyond standard web tools creating a framework for simplified front line maintenance Best in Class Software VTI delivers a variety of software utilities and options that are designed to accelerate the time it takes to begin using an EX1200 It is delivered with an embedded web interface that provides virtual control of all functions in the module without the need for any third party software aside from a standard web browser and Java Runtime Environment JRE These graphical front panels have been designed to closely emulate actual front panel controls to optimize ease of use The functionality has been implemented such that most operations can be accessed through a very clean main panel with no function panel being more than one layer deep More than an Embedded Control Panel Each switch and instrument has
144. feet using four 4 6 32 x 7 16 pan head Phillips screws to secure the top and bottom and one 1 6 32 x 1 2 pan head Phillips screw to secure side of each foot 4x Per Foot Top and Bottom FIGURE 2 3 TABLETOP INSTALLATION DIAGRAM EXPLODED FRONT VIEW 34 EX1200 Series Preparation for Use www vtiinstruments com Rack Ears Half Rack Width Option P N 70 0373 101 The tabletop installation option can be used when an EX1200 is not installed in a rack but will be employed as a bench top or desktop instrument Required Tools 1 2 Phillips screwdriver Parts List Item Qty Description 1 1 Bracket Rack Ear Single Half Rack EX1262 02 41 0493 009 2 1 Bracket Long Rack Ear Single Half Rack EX1262 02 41 0493 011 3 10 Screw 6 32 x F H Undercut Phillips Zinc 27 0114 025 Assembly Procedure 1 Place the chassis a protected work surface with its input connectors facing front 2 Using a 2 Phillips screwdriver install the rack ears P N 41 0482 009 and 41 0493 011 on the front of the EX1200 using five 5 6 32 x 3 8 flat head Phillips stainless steel screws P N 37 0114 025 per rack ear Note that the Optional Mounting Locations in Figure 2 4 allow the EX1200 to be installed in a rack either flush or recessed 3 Place the EX1200 in the desired rack slot and secure the front rack ears with hardware provided with the rack 5x Per Side O
145. format is readable by most spreadsheet programs INSTRUMENT SOFT FRONT PANELS Each plug in instrument such as the EX1200 3608 has a unique onboard soft front panel From the soft front panel the user can access the instruments functionality and configure it for use For more information on instrument soft front panels refer to the instrument s user s manual SWITCH SOFT FRONT PANELS Each switch card has its own unique soft front panel which paths to be defined relays to be opened and closed relays and for user defined states to be created which can be recalled for later use Monitor and Control Tab By default the SFP opens to the Monitor and Control view From this view the user can see the logical diagram for the selected plug in module To control a switch for example simply click on the pin that needs to be activated to cause the internal relay to actuate and connect to the pin indicated Horizontal and vertical scroll bars allow the user to navigate larger diagrams by scrolling The user may also change the magnification of the schematic Near the upper right corner of the web page is a size selection menu By clicking on either the up or down arrow the EX1200 Series Maintenance 113 VTI Instruments Corp size of the schematic can be changed from to any of the following sizes Tiny Small default Medium and Large C Apply X Revert Small es gt gt Connected
146. from the DCV measurements because simple integration and averaging of the input signal will not yield the RMS value Taking an ACV measurement uses the same set up as a DCV measurement with the HI and LO leads being connected to the source Be certain to observe the maximum specification ratings before connecting to the DMM As with DCV measurements the source can be connected through the front panel or through the DMM Bus backplane bus via a switch multiplexer module or the DMM bus rear panel connector Sense HI Input HI Input LO Sense LO DMM Front Panel AC Voltage Source FIGURE 4 9 DMM CONNECTIONS FOR ACV MEASUREMENTS 82 Basic EX1200 DMM Operation www vtiinstruments com True RMS The EX1200 DMM measures the heating potential of an applied signal Unlike an average responding measurement true RMS measurements can be used to determine the power dissipated in a resistance even by a non sinusoidal signal The power is proportional to the square of the measured true RMS voltage independent of wave shape Readings of this type are more accurate and closer to the expected reading of an analog instrument A complex algorithm calculates the true RMS voltage of the applied waveforms When measuring non sinusoidal waveforms crest factor error can occur For more information on these errors refer to the Crest Factor discussion later in this section AC Filters Theoretically a true RMS DMM is insensiti
147. gineers are immediately ready to capture display and analyze data With EXLab and an EX1200 engineers can design a mixed signal distributed measurement system including voltage thermocouple RTD and digital inputs A wide range of graphical displays are available to generate customized displays of multiple channels simultaneously EXLab systems save time and reduce the frustration normally associated with software development efforts Flexible Application Programming Options Every EX1200 series module is delivered with an application programming interface API that conforms to the industry standard IVI specifications for its class The IVI drivers port seamlessly into the most commonly used application development environments such as LabView LabWindows CVI C and Visual Basic among others The intuitive APIs simplify programming and expose all available instrument functionality eliminating the need for low level coding The EX1200 series driver is designed to support advanced functionality such as End end path level programming across mainframes Logical channel naming Relay odometer for predictive maintenance Scanning of multiple channels LXISync API for sophisticated triggering options While IVI is intended for Windows based operating systems VTI s innovative approach to driver development allows users to develop their applications using an IVI like interface that can be imported into Linux and other operating syst
148. h High AC filter AC CURRENT 4 DIGITS 1 YEAR ACCURACY RANGE RESOLUTION ee READING n ACCURACY 4 10 mA 1 pA n ou lt 10 mA 0 NRA aa ox s LA 100 pA 5 zm A 03A n mA gt 0 3 A DA va _ area gai 5 Specifications are for sine wave input gt 5 with High AC filter CREST FACTOR ADDITIONAL ERROR READING 1 2 2 3 3 4 4 5 0 05 0 15 0 30 0 40 For non sine wave inputs FILTER TYPE BANDWIDTH SELECTION LOW 3 Hz 300 kHz Can be selected only in 6 digits MEDIUM 20 Hz 300 kHz Can be selected only in 6 digits HIGH 20 Hz 300 kHz Can be selected in 6 2 5 and 4 digits Line frequency default to 60 Hz integration time default to 0 01 PLC and auto zero settings default to ON in Low and Medium filter settings 24 EX1200 Series Introduction www vtiinstruments com AC FREQUENCY AND PERIOD RANGE FREQUENCY RANGE MODE YEAR BE CURACY DIGITS PPM READING OFFSET PPM Slow 6 60 0 3 100 mV to 300 V 3 Hz to 1 5 MHz Medium 5 60 3 0 Fast 4 60 30 0 Input signal gt 10 of range TEMPERATURE ACCURACY THERMOCOUPLES Type Min Max 100 0 100 300 500 700 900 1100 1400 J 200 1200 0 2
149. h immediately without waiting for any external signal Software When selected the scanner proceeds through the scanlist in steps and will wait for a software trigger before executing the next scan step or scanlist iteration LXI0 LXIT Indicates the LXI Trigger bus line that will advance the scanner to the next step or scanlist iteration LANO LANT Indicates the LAN event that will advance the scanner to the next step or scanlist iteration DIOO DIO7 Indicates the digital I O channel that will advance the scanner to the next step or scanlist iteration Alarm0 Indicates the Alarm event that will advance the scanner to the next step or scanlist iteration Notes on Web Page Use It is important to only send triggers other than Immediate when the EX1200 is expecting to receive triggers If the period of an alarm is set too fast if the Send Software Trigger button is clicked when the EX1200 is not in the Waiting for Trigger state etc the scan engine will flag an error and abort the scan To wait for a trigger between measurements place these triggers in separate scan steps 1 separate rows in the Scanlist table The Step Trigger In field triggers advances between scan steps EX1200 Series Maintenance 111 VTI Instruments Corp If a hardware trigger an LXI LAN or DIO line is selected as either the Scan Trigger or Step Trigger source and the Rise Fall slider will appear This slider allows the user to
150. h in subdivision b 3 ii of the Rights in Technical Data and Computer Software clause in DFARS 252 227 7013 VTI Instruments Corp 2031 Main Street Irvine CA 92614 6509 U S A EX1200 Series Preface 5 VTI Instruments Corp DECLARATION OF CONFORMITY Declaration of Conformity According to ISO IEC Guide 22 and EN 45014 MANUFACTURER S NAME VTI Instruments Corporation MANUFACTURER S ADDRESS 2031 Main Street Irvine California 92614 6509 PRODUCT NAME High Density Switch Measure and Control System MODEL NUMBER S EX12x2 and EX12x6 Mainframes and Plug in Modules PRODUCT OPTIONS All PRODUCT CONFIGURATIONS All VXI Technology Inc declares that the aforementioned product conforms to the requirements of the Low Voltage Directive 73 23 EEC and the EMC Directive 89 366 EEC inclusive 93 68 EEC and carries the CE mark accordingly The product has been designed and manufactured according to the following specifications SAFETY 61010 1 2001 2 Ed EN 61010 1 2001 244 Ed EMC 61326 1 2006 EN55011 Class A Group TEC 61000 4 2 TEC 61000 4 3 TEC 61000 4 4 TEC 61000 4 5 61000 4 6 61000 4 8 TEC 61000 4 11 CISPR 11 2004 Class A ICES 001 Issue 4 AS NZS CISPR 11 27 ED Class FCC Part 15 Subpart B Class A This product was tested in a typical configuration I hereby declare that the aforementioned product has been designed to be in compliance with the relevant sections of the spe
151. have been deleted from the host PC the Java cache should be deleted next For Java version 6 the cache can be removed by performing the following steps 1 2 3 Navigate to the Control Panel Start Settings Control Panel Double click the Java icon in the Control Panel Ly control Paral 1 File Edi Favorites Tools Help 3 JO search Folders E Address Control Panel Ss Accessibility Options ss Power Options Add Hardware Ss Printers and Faxes Add or Remove Programs FR program Updates Administrative Tools Q QuickTime LJ Regional and Language Options Sy Scanners and Cameras g Control Panel a switch to Category View See Also Windows Update 9 Help and Support Network Connections INVIDIA nView Desktop Manager Phone and Modem Options E Portable Media Devices Java TM Control Panel Scheduled Tasks Center ShoreTel System Sounds and Audio Devices Speech Symantec LiveUpdate System ef Taskbar and Start Menu User Accounts Windows Firewall Wireless Network Setup Wizard When the Java Control Panel opens click on the Settings button in the Temporary Internet Files section of the window 134 EX1200 Triggering Control Panis j Update Java Security Advanced View version information about Java Control Panel Network Settings Network settings
152. he PC will be connected to a LAN ensure that the LAN connection is made 2 From Windows navigate to Start Settings Network Connections 3 Right click on the connection that will be used to communicate with the EX1200 then select Properties see Figure 2 14 Some PCs have multiple network connections so it is important to make certain that the connection used to communicate with the EX1200 is selected ES r 217 9116 5 i File Edit View Favorites Tools Advanced Q Back Q amp Search Folders Ez 1 Address e Network Connections Network Tasks Other Places Disable Status Repair Bridge Connections Create Shortcut elete Rename 3 View or change settings For this connection such as adapter protocol or modem configuration 5 FIGURE 2 14 NETWORK CONNECTION PROPERTIES 4 Select Internet Protocol TCP IP then click the Properties button as shown in Figure 2 15 E Mrguartiaz General Authentication Advanced Connect using Bg 3Com Gigabit LOM 32940 This connection uses the following items Client for Microsoft Networks a File and Printer Sharing for Microsoft Networks QoS Packet Scheduler Internet Protocol TCP IP Description Transmission Control Protocol Internet Protocol The default wide area network protocol that provides communication across diverse interconnected networks
153. he majority of measurements taken by the DMM These functions are explained below The selected measurement range of a function affects both the ultimate digits and accuracy of the measurements as well as the maximum signal level that can be measured The multimeter can automatically select the range using auto ranging or a fixed range can be set using the manual ranging options Auto ranging is convenient because the multimeter automatically selects the appropriate range for each measurement However if the range is known to the user manual ranging can provide for faster measurements by reducing the processing overhead associated with determining the appropriate range for each measurement The range setting for each measurement function is saved in volatile memory when changing functions Selecting a function returns the instrument to the last range selected for that function Note however that when the instrument is reset or power cycled the functions return to their default values Table 4 2 lists the valid measurement ranges for each measurement function Function Ranges DC Voltage 100 mV 1 V 10 V 100 V 300 V AC Voltage 100 mV 1 V 10 V 100 V 300 V DC Current 1 mA 10 mA 100 mA 14 3 A AC Current 10 mA 100mA 14 3A 2 Wire Resistance 100 1 kO 10 kO 100 kO 1 MO 10 MO 100 MO 4 Wire Resistance 100 1 kO 10 kO 100 kQ Frequency 1 5 MHz Time Per od 0 3333s Temperature Fixed based on t
154. he operation of the product or software or firmware will be uninterrupted or error free LIMITATION OF WARRANTY The warranty shall not apply to defects resulting from improper or inadequate maintenance by the buyer buyer supplied products or interfacing unauthorized modification or misuse operation outside the environmental specifications for the product or improper site preparation or maintenance VTI Instruments Corp shall not be liable for injury to property other than the goods themselves Other than the limited warranty stated above VTI Instruments Corp makes no other warranties express or implied with respect to the quality of product beyond the description of the goods on the face of the contract VTI specifically disclaims the implied warranties of merchantability and fitness for a particular purpose TRADEMARKS Java Runtime Environment are trademarks or registered trademarks of Sun Microsystems Inc or its subsidiaries in the United States and other countries LabVIEW and LabWindows CVI are trademarks of National Instruments Corporation Visual Basic Windows and Internet Explorer are registered trademarks of the Microsoft Corporation or its subsidiaries Linux is a registered trademark of the Linux Foundation IVITM is a trademark of the IVI Foundation Bonjour is a trademark of Apple Inc RESTRICTED RIGHTS LEGEND Use duplication or disclosure by the Government is subject to restrictions as set fort
155. he type of sducer selected TABLE 4 2 DMM FUNCTION RANGES Over Ranging Each range can measure a signal that is within 120 of its range This is however not applicable for ranges whose limits are maximum specified levels such as the 300 V dc range Input values that exceed the maximum readings cause an error indicating that the DMM cannot measure the input signals at the current range Auto Range When auto range mode is enabled the EX1200 DMM automatically selects the input range This is done by validating the input signal then the range with best resolution to cover the entire dynamic range of the signal is selected The thresholds for auto ranging are 6 and 12096 lower and upper for voltage based measurements ACV DCV frequency and period and 1096 and 120 for current measurements ACI and DCI Thus if the unknown signal is more than 120 of the initially assumed range then the DMM automatically switches to the next highest range Similarly if the unknown signal is less than 6 of the assumed range the DMM automatically drops to the next lowest available range Basic EX1200 DMM Operation 75 VTI Instruments Corp RESOLUTION For example if a 9 V signal is fed to the DMM and auto range is enabled the 10 V range is selected in order to display 9 00000 V the total number of digits is based on the resolution selected If a 1 12 V signal is fed to the DMM the 1 V range is s
156. igh Limit infinity Measurement Option peat if intervat 0 0 Low Limit infinity Input Front Panel Digits 65 Advanced Settings Math Range Delay Software Trigger Auto Zero On 7 Gain 1 0000 Auto 600 Y Offset 0 0000 Delay Sec 0 perture Time 0 1667 Value Function Option Range Limits TUUM ul CicarTabie CiearFifo ata Connected FIGURE 7 14 DMM SOFT FRONT PANEL Tab Bar The general purpose of the Tab bar located at the top of the scanner SFP is to allow the user access to all the components of the EX1200 system to which they are connected e Device Information When clicked a screen appears that provides SFP and firmware version information for the DMM e Monitor and Control When clicked it provides the ability to set the DMM s options perform measurements and collect data e Calibration This tab provides the calibration and verification routines as well as access to the stored adjustment data Status Display The Status Display field functions similarly to a DMM front panel display on a standard standalone DMM while its takes measurements It provides information regarding the measurements being taken as well additional data Auto AUTO is displayed if the DMM is currently set to auto range mode This area will be blank otherwise e Current Action Indicates the DMM s current acti
157. in the prompt to save these settings To recall a saved configuration press the Load button select the name of the configuration that is required then click on the OK button To delete a preconfigured state simply click the Delete button select the state the press OK All saved configurations can be easily cleared at once by selecting Delete Stored Configurations from the list in the Delete dialog Measurement Field From the Measurement field the user can start a measurement e Initiate This button initiates a measurement moving the internal state machine from Idle to Waiting for Trigger Software Trigger Button The Send button will send a software trigger to the DMM This causes the trigger model to advance if the selected Sample Trigger Source or Trigger Input Source is Software Readings Field Below the DMM configuration fields a data field is provided with options that is populated as measurements taken by the EX1200 s DMM are read from FIFO No Indicates the row number for reference Time Indicates the IEEE 1588 time the measurement was taken Value Displays the measurement data Unit Indicates the engineering units of the measured data Function Indicates the function used when taking the measurement was taken Option Indicates the function options if applicable used when the measurement was taken Range Indicates the range that was used when the measurement was taken Lim
158. in this directory System LXISync Instrument Driver Installation NOTE Complete this step only if the LXISync capabilities of the EX1200 platform are required Also if this driver was installed previously on the host PC software installation is now complete To install the System LXISync Instrument driver navigate to CD ROM Drive gt LXI Drivers EX System Driver IVI on the CD and run the msi installer located in this directory Please refer to VTEX Switch Driver Programmer s Manual for programming guidelines Additional information about IVI drivers be found on the web at http ivifoundation org Information about the LXI standard and LXI technology found at http www lxistandard org 52 EX1200 Series Preparation for Use www vtiinstruments com NETWORK CONFIGURATION By default the EX1200 will attempt to locate a DHCP server If one is found the IP address assigned by the DHCP server will be assumed Otherwise after a timeout of 20 seconds the unit will attempt to obtain an IP address by using Auto IP Auto IP is a mechanism for finding an unused IP address in the range 169 254 X Y where X is in the range 254 and Y is in the range 0 255 The device will first attempt to obtain the specific address 169 254 X Y where X and Y are the second to last and last octets of the device s MAC address However X will be set to 1 if it is 0 in the MAC address and to 254 if it is 255 in the
159. instrument into the ARM layer As this occurs the reading buffer memory is cleared Upon entering the ARM layer the ARM Count is reset to its specified value The instrument remains in the ARM layer until the specified ARM event occurs Once that occurs the ARM Count is decremented and the instrument transitions into the TRIG layer The instrument remains in the TRIG layer until the specified TRIG event occurs Once that occurs the instrument transitions into the DEVICE layer In the DEVICE layer channels in the scanlist are measured the requested sample count number of times and stored into local memory FIFO If there are more steps in the scanlist the instrument stays in the TRIG layer until the specified TRIG event and subsequent device action occurs enough times to finish the scanlist Once the scanlist is complete the instrument then evaluates the remaining ARM Count and repeats the ARM layer action if it is nonzero However since each transition into the TRIG layer restarts the scanlist each additional ARM layer action results in the full specified number of TRIG Count actions through the TRIG layer and DEVICE layer Once the ARM Count reaches zero the instrument transitions back into the IDLE layer If the Arm Count is the special value indicating Infinite the ARM layer is automatically reentered However unlike with an Initiate API call the reading buffer memory is not cleared EX1200 Triggering 101 VTI Ins
160. insulators can allow voltage to leak from the test system and can create a significant measurement error This error increases if this measurement is performed in a humid environment as this will increase the conductance of the insulation Contamination of the cabling or input connector with high resistance surface films such as the oil present on fingertips should also be avoided To maximize high resistance measurement readings care should be taken to maintain a clean test environment EX1200 Series Introduction 29 VTI Instruments Corp Low Resistance Measurements When making low resistance measurements and using switch cards it is important the type of relay being used by the switch card Solid state relays tend to have a higher input impedance and more capacitance than mechanical relays making mechanical relays preferable when performing measurements of this type Solid state switches also have leakage currents that should be accounted for when measuring resistance or high impedance voltage sources 30 EX1200 Series Introduction www vtiinstruments com SECTION 2 PREPARATION FOR USE UNPACKING When an EX1200 system is unpacked from its shipping carton the contents should include the following items An EX1200 High Density Switch Measure and Control System Mainframe Getting Started with LXI based VTI Systems and Local Area Networks application note EX1200 Series User s Manual this manual VT
161. interrupt when the reading is outside of the limit requirements The limits can be set to any value between 0 and 120 of the highest range for the present function The upper limit should always be larger than the lower limit The interrupt can be routed to be any valid LXI trigger output including the general purpose DIO lines available at the rear panel In this way a limit violation can act as a trigger source and initiate an appropriate action For example a measurement channel can be configured to validate an upper and lower voltage limit and trigger an alarm when any deviations are found These functions are volatile however and must be programmed in the same manner whenever power is cycled or upon reset The default value for both upper and lower limit is infinity MATH FUNCTIONS The EX1200 DMM allows the user to define gain and offset readings for each measurement By doing so the user can define custom conversion factors i e define custom transducers As with limits the math functions are volatile and must be reasserted upon power cycle reset These gain and correction factors are applied after calibration constants and auto zero calculations are performed but before limits are evaluated Using this methodology a custom linearization formula Y mX c can be defined for every measurement Note that the gain and offset factors apply to all functions dc and ac volts dc and ac current 2 and 4 wire resistance frequency
162. ions selected for each measurement In general options that require additional processing such as ac filtering increased resolution use of the auto modes decrease the reading rate of a measurement A tradeoff always exists between speed and accuracy To achieve the maximum reading rate auto zero should be disabled the trigger delay should be set to 0 a fixed range should be used and the aperture time should be set to 0 01 PLC Common Mode Voltage It is possible to measure differential voltages using the DMM This means both input terminals have a common voltage level with reference to ground and the DMM will still measure the differential signal between the HI and LO terminals Vyas In theory differential measurements eliminate the effects of common mode voltage However it is not possible to completely eliminate the effects of common mode voltage The common mode rejection ratio CMRR of the DMM measures the tendency of the device to reject input signals common to both input leads Common Mode HI LO FIGURE 1 1 RECOMMENDED COMMON MODE CONNECTIONS 28 EX1200 Series Introduction www vtiinstruments com MAXIMIZING MEASUREMENT PERFORMANCE This section discusses tips and procedures that can help maximize the actual performance realized with the EX1200 DMM and aid the user in avoiding some common pitfalls associated with making measurements Warm up Time For the most accurate D
163. ior to installation Tabletop Installation Option P N 70 0373 100 Rack Ears Half Rack Width Option P N 70 0373 101 Rack Ears Dual Half Rack Width Option P N 70 0373 102 Rackmount Installation Half Rack Width Option P N 70 0373 103 Rackmount Installation Dual Half Rack Width Option P N 70 0373 104 Tabletop Installation Option P N 70 0373 100 The rackmount installation option includes all the parts necessary to mount an EX1200 system to the front of a standard test rack Required Tools 1 2 Phillips screwdriver Parts List 1 4 Feet Corner Rubber U Shaped 37 028 1 201 2 4 Screw 6 32 x 1 2 Pan Head Phillips Zinc 37 0044 050 3 14 Screw 6 32 x 7 16 Pan Head Phillips Zinc 37 0044 044 4 2 Screw 6 32 x 3 8 Pan Head Phillips Zinc 37 0044 037 Assembly Procedure 1 Place the chassis a protected work surface with its input connectors facing front 2 Using Figure 2 3 locate the installation locations for each rubber foot 3 Using the 2 Phillips screw driver install the front left rubber feet using two 2 6 32 x 7 16 pan head Phillips screws to secure the top and two 2 Screw 6 32 x 3 8 pan head Phillips screws to secure the bottom of the foot Use one 1 6 32 x 1 2 pan head Phillips screw to secure side of this foot EX1200 Series Preparation for Use 33 VTI Instruments Corp 4 Using the 2 Phillips screw driver install the four rubber
164. is populated with data this is collected during the sweep steps of the scanlist The table consists of the following data fields Time Indicates the IEEE 1588 time of the measurement Channel Indicates the switch channel on which the measurement was taken Value Indicates the data that was measured Units Indicates the engineering units of the measurement data To the right of the Results Field are options that affect when data is displayed and what is done with the data once the scan is complete e Get Continuous When enabled all available data is pulled into the table as soon as possible This also disables the Get and Get options e Get button When clicked measurement data is immediately pulled from the FIFO memory Get Continuous must be OFF in order for this option to be available Get All When Get is selected clicking the Get button causes all of the currently available data to be retrieved from memory e Get Count field Indicates the number of data points that will be returned when the Get button is clicked FIFO Count field Indicates the number of data points available in the FIFO memory e Clear Table button When clicked all of the data currently in the table is erased e Clear FIFO button When clicked any data points currently stored in the FIFO memory will be erased e Save Data button When clicked the data in the table can be saved A csv comma separated value file is generated by default This
165. its Indicates the trigger output limits met when the measurement was taken The following control options are provided e Get Continuous checkbox If enabled this button disables the Get button and continually populates the data table as data is acquired 120 EX1200 Triggering www vtiinstruments com e Get button When clicked data is immediately pulled from FIFO memory Get All checkbox When enabled clicking the Get button will retrieve all of the current data Once the FIFO is empty it will stop acquiring retrieving data e Get Count field Indicates the number of data points that will be returned when the Get button is clicked Should be less than or equal to the FIFO Count FIFO Count field Indicates the number of data points available in the FIFO memory e Clear Table button When clicked all of the data currently in the table is erased e Clear FIFO button When clicked any data points currently stored in the FIFO memory will be erased e Save Data button When clicked the data in the table can be saved A csv file is generated by default DMM CALIBRATION WEB PAGE When the Calibration tab is clicked on the DMM SFP a screen appears that allows the user to access the calibration and verification routines used during production test Device Information Monitor and Control Calibration Calibration Functions Reference Instruments Calibration Data Calibration kA Dataset 0 v pr Load Data
166. its own embedded web interface that can be used to directly monitor and control operation of the device In addition a powerful soft front panel dedicated to scanning measurement operations is provided Operators can quickly setup a list of channels to be measured at programmable intervals with desired functions per channel e g dc voltage temperature resistance etc as well as the state of discrete switches and analog and digital output channels at the beginning of each scan step This robust utility provides a very quick and easy mechanism for defining test sequences where stimulus and switch settings need to be modified during the test and input channels can be measured to verify how they respond to these changes EX1200 Series Introduction 11 VTI Instruments Corp EXLab Setup and Run 1200 are supported by the popular EXLab turnkey software package It allows end users to quickly setup a data logging test scenario and begin collecting data within minutes The EXLab intuitive GUI significantly shortens the time consuming tasks of test setup and configuration from setting channel configurations and display routines to creating and exporting data files Test engineers can begin monitoring recording and analyzing data faster than ever before Setup is quick and easy with EXLab auto instrument discovery and intuitive GUI for setting channel configurations EX1200 instruments are auto identified and once setup is complete en
167. lon PVC insulators can easily contribute 0 1 error when measuring a 1 MQ resistance in humid conditions Physically touching the while the resistance is being measured should be avoided as the body acts as a leakage path for the test current Also another instrument should not be connected in parallel with the test resistor as the input impedance of that instruments will appear in parallel to the test resistance resulting in the combined resistance values to be read by the DMM FREQUENCY PERIOD MEASUREMENTS The EX1200 DMM uses the reciprocal counting technique to perform frequency measurements with a 24 MHz oscillator driving the counter circuitry Frequency measurements are always returned in hertz Hz Period measurements use the same technique but the frequency measurement is inverted to measure the period T 1 f Period measurements are always returned in seconds 5 Configuring Frequency Period Measurements The EX1200 DMM can measure the frequency and time period of any time continuous waveform sine wave square wave triangular wave etc with oscillations that are approximately 0 1 VgAxgg Note that the DMM uses 10 of the selected range for threshold detection For example if the DMM is set to the 10 V range an input signal will only be detected if the amplitude is greater than 1 V For more information on voltage settings please refer to the AC Voltage Measurements discussion in this section The range of
168. ly login It is only necessary to enter a password once per session Corporation Ghange Password Windows DESI E Explore oo BB bito ex 123191 localjca bin passward coi ie Favorites F VTI Instruments Corporation EX1200 Change m EX1 200 Change Password Instruments SFP Soft Front Panel Network Configuration J D rime Configuration LXI Synchronization LXI Identification MASI s Blink LAN Indicator Change Password Upgrade EIC Reset TNI Reboot FIGURE 7 21 EX1200 PASSWORD PAGE 130 EX1200 Triggering www vtiinstruments com UPGRADE This action page is used to upgrade the embedded firmware of the EX1200 controller and DMM if installed as well as the plug in modules Prior to initiating the firmware upgrade process a new uncompressed firmware image must be obtained from VTI Instruments and be accessible from the computer that is connected to the EX1200 Unless specifically noted by VTI Instruments firmware upgrades do not alter the non volatile configuration settings network configuration time configuration of the EX1200 Viiinstruments Corporation FX4200 Upgrades Windows Internet Explorer E http Jex 123191 local cgi bin upgrade cgi ive Search P v Favorites Instruments Corporation 1200 Upgrade fuc Tools
169. mainframes are powered by a single power supply and current on the 3 3 V rail is derived from the 24 V rail with an efficiency of 8096 When calculating the total power consumption of the cards installed in an EX12x2 x6 mainframe the following conditions must be satisfied 1 Psy lt 2 Posy 84 W 3 Psy lt 75 4 Pis lt 24W 5 No rail can exceed the maximum current per rail Particular attention should be paid to the 24 V rail 150 Appendix B www vtiinstruments com For example an EX 1266 is populated with the following three cards e EX1200 2001 with six 6 relays closed e EX1200 3048 with ten 10 relays closed EX1200 3608 From the Plug in Module Power Consumption section the amount of current used by the switch card s relays can be calculated and added to the total consumption on the 5 V rail 200 2001 card s consumption number of relays closed relay consumption amp x1200 2001 0 0037 A 6 75 mA 200 2001 0 454 200 3048 0 0041 10 23 mA amp x1200 3048 0 234 With the switch card s total power consumption calculated on the 5 V rail consumption for each rail can be calculated 24 V X 1200 3608 bay EX1200 2001 EX1200 3048 Puy 224 V x 1 4 A 0A 4 0 A Pay 33 6 W Psy 5Vx Usv EX1200 3608 1200 2001 Ex1200 30
170. measurement Interval when set to Interval an internal time periodically sends a sample trigger This parameter sets the time between sample triggers e Trigger Output Options a trigger can be generated either when the measurement completes or when the read value is out of tolerance Measurement Complete Trigger sets the trigger line that will be pulsed when the Measurement Complete state is reached Over Limit Trigger sets the trigger line to pulse when an over limit condition occurs High Limit sets the high input level for the over limit condition Low Limit sets the low input level for the over limit condition 72 Basic EX1200 DMM Operation www vtiinstruments com Trigger Model Status INITILIZED 0 IDLE IDLE ARM ACTIVE 0 TRIG ACTIVE 0 LAYER ABORT SAMP ACTIVE 0 ho bares etae Joens INITILIZED 1 INIT ARM ACTIVE 0 TRIG ACTIVE 0 LAYER SAMP ACTIVE 0 DEVICE ACTIVE 0 Wait for SW ARM ARM Event Event INITILIZED 1 ARM ACTIVE 1 ARM TRIG ACTIVE 0 LAYER ARM Delay SAMP ACTIVE 0 DEVICE ACTIVE 0 Decrement ARM COUNT TRIG IMM Wait for SW TRIG TRIG Event TRIG Event INITILIZED 1 ARM ACTIVE 0 TRIG TRIG Delay TRIG ACTIVE 1 LAYER SA
171. metrical waveform inputs such as pulse trains are rejected before true RMS measurements are made Power Supply Each EX1200 mainframe has an inherent limitation on the maximum power it can supply to the plug in cards modules Please refer to the power consumption specifications of the plug in cards before configuring the cards This data can be found in the 1200 Switch Cards User s Manual Exceeding these power limits may damage the power supply of mainframe EX1200 Series Introduction 27 VTI Instruments Corp Crest Factor Although the EX1200 DMM is a true RMS ac multimeter calibration and all other accuracy specifications are applicable only to sinusoidal waveforms If the input waveform is non sinusoidal it will affect the accuracy of the reading It is important to consider the crest factor of the input waveforms to determine the percent error contributed by them The crest factor of a waveform is the ratio of its peak value to its RMS value The larger the crest factor the greater the energy contained in higher frequency harmonics and hence the larger the error introduced See Crest Factor in Section 4 for more information Resistance Measurements When making 4 wire ohms measurements it is important to note that the range of the EX1200 DMM is reduced 4 wire ohms mode the only valid ranges are between 100 and 100 Readings per Second Reading rate is affected by the measurement function and opt
172. n internet General Security Privacy Content Connections Programs Advanced Home page Ad To create home page tabs type each address on its own line http jwww vti nstruments com Use current Use default Use blank Browsing history Delete temporary files history cookies saved passwords and web form information Delete browsing history on exit Settings Search 7 pP Change search defaults Settings Tabs Change how webpages are displayed in Settings tabs Appearance Colors Languages Fonts Accessibility Ce Care Cm 4 When the Delete Browsing History window appears click on the Delete cookies button confirmation dialog box will appear Click the Yes button to remove the cookies present on the host PC EX1200 Series Maintenance 133 VTI Instruments Corp srovsing Temporary Internet Files Copies of webpages images and media that are saved For Faster viewing Cookies Files stored on your computer by websites to save preferences such as login information History List of websites you have visited Form data Saved information that you have typed into forms Passwords Passwords that are automatically filled in when youleg on to a website you ve previously visited ut ist Delete all Clearing Java Cache Once the cookies
173. n E16 4 BPLLO 2 Pin E16 BPL 610 2 Pin E16 4 BPL_LO HI LO Voltage and resistance measurements SHI SLO Sense lines for 4 wire resistance measurements used with HI and LO DAMPS Current measurement used with LO FIGURE 3 2 TYPICAL DMM BUS CONNECTIVITY 1200 3072 SHOWN Figure 3 2 shows typical connections available through a switch module to the DMM bus on the backplane This direct backplane connection is not available on all cards refer to the 1200 Series Switch Card User s Manual for specific plug in module capabilities The DMM can be configured to take readings through the front panel banana jacks or the backplane bus programmatically or through the SFP browser interface of the DMM Please see Section 4 for more information on taking measurements with the DMM EX1200 Series Basic Mainframe Operation 65 VTI Instruments Corp Slots configured for a matrix bus are not tied to a DMM bus To use the onboard DMM with a matrix bus card external wiring should be used to connect the desired front panel matrix output to the DMM either through the front panel banana jack connectors or through the 9 pin DMM bus connector LED INDICATORS LOCKING TRIGGERING The EX1200 has three dual color status LEDs The 1588 LED indicates IEEE 1588 synchronization status the LAN LED indicates the LAN status and the PWR LED provides power and failure status for the EX1200 system
174. n selected Also causes all sliders to move to the ON position Low Frequency AC Calculates the adjustment factors that are used in low frequency ac measurements Note there is no verification component for this function DC Voltage Calculates gains and offsets for dc voltage measurements DC Current Calculates gains and offsets for dc current measurements AC Voltage DAC Calculates an adjustment factor for the DAC used in the ac voltage measurement circuit Note there is no verification component for this function EX1200 Series Maintenance 121 VTI Instruments Corp AC Voltage Calculates gains and offsets for ac voltage measurements AC Current Calculates gains and offsets for ac current measurements Resistance Calculates gains and offsets for 2 wire and 4 wire resistance measurements Reference Instruments Field The calibration and verification routines use VXI 11 to communicate with reference instruments As such a hostname and device identifier typically a GPIB address for a LAN GPIP gateway must be specified for each instrument Note that while any LAN GPIB gateway should work only the Agilent E5810A has been tested e Calibrator Specifies the calibrator that will be used for calibration Currently only supports F5700 and F5700A An F5720A amplifier must be connected to the calibrator e External DMM Specifies the DMM which will be used for calibration Currently only supports HP3458A e Function Generator S
175. nA 4 35 pA 10 mA 6 digit 10nA 0 1 V 0 050096 0 006090 4 35 uA 43 5 uA 100 mA 6 digit 100 nA lt 0 6 V 0 0500 0 0060 43 5 uA 435 1 A 6 V digit l uA lt 0 4 V 0 0700 0 0070 435 uA 4 40 mA 6 digit l uA lt 0 9 V 0 1000 0 0060 4 40 mA 4 40 mA 1 mA 5 V digit 10 0 nA 0 1 V 0 050096 0 0105 399 nA 4 38 uA 10 mA 5 digit 100 0 nA 0 1 V 0 050096 0 0061 4 38 uA 43 8 uA 100 mA 5 gt digit 1 0 uA lt 0 6 V 0 0500 0 0061 43 8 uA 438 uA 1 A 5 V digit 10 0 uA 0 4 V 0 070096 0 0072 438 uA 4 42 mA 3 A 5 digit 10 0 uA 0 9 V 0 1000 0 0061 4 42 mA 4 42 mA 1 mA 4 V digit 100 0 nA lt 0 1 V 0 0500 0 0110 402 nA 441 uA 10 mA 4 digit 1 0 uA lt 0 1 V 0 0500 0 0062 441 uA 44 1 uA 100 mA 4 digit 10 0 uA lt 0 6 V 0 0500 0 0062 44 1 uA 441 yA 1 A 4 V digit 100 0 uA 0 4 V 0 070096 0 007396 441 yA 4 44 mA 4 digit 100 0 uA 0 9 V 0 1000 0 0062 4 44 mA 4 44 mA Add 0 15 of reading above 2 Over range 20 of range except 3 A range 20 EX1200 Series Introduction 2 WIRE RESISTANCE 1 YEAR ACCURACY www vtiinstruments com Tear 5 C 0 C To 55 C RESOLUTION READING i RANGE lt 30 RANGE gt 30 RANGE 100 Q 6 digit 100 uQ 0 1000 0 0600 0 60 Q 0 75 Q 1 67 digit 1 mQ 0 0500 0 0100 0 75 Q 3 00 Q 3
176. nd thermal disturbances However as with all precision instrumentation certain precautions if taken into consideration can help achieve maximum performance 1 The unit particularly its front panel should be located away from sources of high or low temperatures When used in a rackmount application with other heat generating instruments EX1200s should be located as far away from the other instruments as possible 1U minimum Multiple EX1200s however can be stacked directly on top of one another without any performance degradation 2 Care should be taken to ensure that the fans at the rear and the air vents at the front of the mainframe are not obstructed to allow for proper cooling EX1200 Series Preparation for Use 31 VTI Instruments Corp 3 All unused slots should be closed with blanking panels to ensure a proper air circulation This is critical to avoid overheating of the cards For more information see the Blanking Panel description in this section 4 The front panel of an EX1200 should not be exposed to strong air currents Typical problematic sources include building ventilation and instrument or cabinet fans 5 Theunit should be located away from sources of high magnetic fields such as motors generators and power transformers 6 When selecting the installation location be certain that there is enough space around the power plug and the outlet so that they are readily accessible Do not insert the power cord into an
177. nector is identical Pin Function 1 SHI N C HI N C DAMPS SLO GUARD LO N C 92220 E 10 Mainframes 30 Mainframes Female Connector Male Connector Bo TABLE 3 5 DMM BUS I O PIN SIGNALS 64 EX1200 Series Basic Mainframe Operation DMM Bus www vtiinstruments com Reset Button A reset button is accessible through a hole in the rear panel of the EX1200 and can be used to restore default switch and network settings This is useful for recovering from an incorrect or unknown network configuration There are three modes of operation for this button which are based on the time the reset button is depressed The reset is implemented according to the LXI LAN Configuration Initialize LCI Mechanism specification Debounce Protection Mode To prevent unintentional resets of the EX1200 there is a debounce protection mechanism If the reset button is depressed for less than 1 s the activation of the reset button is treated as unintentional and no action is taken Device Reset Mode Depressing the button for a longer time greater than 1 s but less than or equal to 10 s causes the EX1200 to reset in the same manner as clicking the Reset button on the browser interface AII switch modules for instance will move their switches to the predefined reset state There is no LED indication for this reset mode Device Reboot LCI Reset Mode To
178. ng data logging level detection and control The compact 1U design provides the granularity to address small channel requirements while allowing for multiple boxes to be daisy chained together through the communications interface based on Ethernet to accommodate larger applications Measurement Integrity VTI has a long history of delivering high density modular switching solutions for the most demanding applications in the military and aerospace market VTI has years of experience in designing switching systems that preserve the integrity of the signal that are routed between high performance instrumentation and complex designs under test This provides the test developer with the assurance that the switching system will not interfere with the signals of interest When tests are run in an uncontrolled environment it is difficult to maintain predictable data over a wide range of temperatures The EX1200 system multimeter improves the accuracy of test data by incorporating multiple calibration sets Up to eight calibration sets can be stored on an EX1200 allowing the system to be fine tuned at various temperatures thus returning reliable accurate environment independent data 10 EX1200 Series Introduction www vtiinstruments com More than Switch and Measure EX1200s include a wide range of modules that can be used to create a stimulus response test subsystem Analog output modules can be used as part of the test s
179. ng each measurement takes a zero reading and then a fixed reference reading These three readings are combined to give a high accuracy measurement value Auto zero eliminates the negative effects of internal offset and gain errors that occur with temperature changes and aging Auto zero requires two background measurements so the DUT measurement rate will be reduced As is true with resolution however performing auto zero requires two additional measurements to be taken decreasing the overall reading rate speed Basic EX1200 DMM Operation 77 VTI Instruments Corp LIMITS Auto Zero Off The auto zero function can be disabled programmatically to achieve higher measurement speeds Once the auto zero is disabled the DMM no longer takes the new zero and reference measurements but instead uses the last known zero and reference values to calculate the signal level VTI recommends however that auto zero be performed as frequent as possible especially when the ambient temperature fluctuates significantly Auto Zero Once This option enables auto zero for the first measurement and then disables auto zero for all subsequent measurements Even after disabling the auto zero the last measured zero and reference readings are used for all successive measurements It is possible to perform lower and upper limit check functions after every measurement The DMM validates the measured reading against these limits and provides a trigger
180. ning thirteen slots of the mainframe 152 Appendix B www vtiinstruments com INDEX Numerics 2 wire resistance measurements 88 cooling ok 88 oe s EE 2 wire RTD measurements DMM connections iicet eee erii ero ret ero tere O 96 3 CIESUTaCL OE Ne ee 3U installation eere 49 DMM connections TACK enne 21 rackmount 492 tabletop 49 D 4 wire resistance measurements 89 common SOUICeS 90 DC voltage 0 00 81 DMM 5 40 20000 common mode rejection seen 82 high resistance measurement errors DMM connections self heating errors eese ground loops teste Settlirig rere tpe ret epe vereda input resistance selections eere 81 4 wire RTD measurements loading errors DMM connections eiecti ette riri tenent N 97 magnetic 22 eere tied 83 power line noise rejection
181. nterval NOTE The first measurement is taken when a Trigger event occurs along with the corresponding delay and that the DMM will not wait for a Sample Trigger to occur per the IVI specification Each state has input values which can be set by the user e Trigger Input Options Trigger Input Source sets the trigger line that moves the DMM from the Wait For Trigger state to the Delay state Trigger Input Slope indicates whether a rising or falling edge will move the DMM from the Wait For Trigger state to the Delay state Trigger Input Count sets the number of times the Wait For Trigger state will be entered each time a measurement is initiated Trigger Delay indicates the delay that occurs between when the trigger occurs and when the measurement is actually taken Valid values are 0 s to 4294 967295 s Auto Delay allows the DMM to automatically set the trigger delay based on the measurement configuration Basic EX1200 DMM Operation 71 VTI Instruments Corp e Sample Trigger Options Sample Trigger Source sets the trigger line that moves the DMM from the Wait For Sample state to the Take Measurement state Sample Trigger Slope indicates whether a rising or falling edge will move the DMM from the Wait For Sample state to the Take Measurement state Count sets the number of samples to that will be taken per trigger event Delay indicates the delay that will occur between getting a Sample Trigger to taking a
182. ocedure 1 Place the chassis on a protected work surface with its input connectors facing front 2 Using a 2 Phillips screwdriver install the rack ears P N 41 0472 008 on the front of the EX1200 using five 5 6 32 x 3 8 flat head Phillips stainless steel screws P N 37 0114 025 for each rack ear Note that the Optional Mounting Locations in Figure 2 10 allow the EX1200 to be installed in a rack either flush or recessed 3 Next attach the unit support brackets P N 41 0482 010 to the EX1200 using two 2 6 32 x 3 8 pan head Phillips SEMS screws P N 37 0028 037 for each bracket see Figure 2 10 4 Place the rear rack support brackets P N 41 0482 011 on the inside of the unit support brackets installed in step 3 and loosely secure them using two 2 8 32 x 3 8 pan head Phillips SEMS screws P N 37 0073 037 and two 2 KEPS hex nuts P N 37 0200 832 Loosely installing the hardware will allow the rear support bracket to adjust to the proper length once installed in a rack 5 Place the EX1200 in the desired rack slot and secure the front rack ears with hardware provided with the rack Once the front bracket are secured slide the rear support brackets so that they can be attached to the rack as well After securing the rear support brackets tighten the screws and KEPS nuts installed in Step 4 EX1200 Series Preparation for Use 45 VTI Instruments Corp FIGURE 2 10 RACKMOUNT HARDWARE INSTALLATION DIAGRAM EXPLOD
183. of resolution are directly proportional to the amount of time used to integrate the signal Integration time is typically specified in number of power line cycles PLC except in the case of frequency and period functions When integration time is selected as a whole number of PLC this helps increase the rejection of common mode and normal mode power line noise Aperture time is related to PLC but is a read only property and cannot itself be modified Aperture time is instead controlled by manipulating the resolution The integration time can be changed by using the resolution property This relationship is defined by the algorithm in the Resolution discussion above For frequency and period measurements resolution is set by specifying the aperture time The aperture time for the frequency and period functions default to 100 ms Valid aperture times vary with the selected resolution 10 ms for 4V2 digits 100 ms for 5V2 digits or 1 s for 6V2 digits Since the resolution integration aperture time and number of PLC settings are inter related some consideration must be made when configuring these features The last of these related parameters to be defined determines the actual resolution of the measurement The auto zero function greatly enhances the accuracy of the measurement especially when the ambient temperature is constantly changing When auto zero is enabled auto zero ON the multimeter internally disconnects the input signal followi
184. on such as Idle Measuring or Waiting for Trigger e Internal Temperature Indicates the current internal temperature of the DMM Last Measurement Displays the latest measurement taken by the DMM 116 EX1200 Triggering www vtiinstruments com System Buttons To the right of the Status Display are two system buttons that affect the functionality of the EX1200 system and all installed modules e Lock Unlock Requests or releases exclusive access to the EX1200 system e Reset Resets the SFP and the connected modules to power on defaults e Self Test Performs a self test operation of the DMM hardware See Self Test in Section 4 for more information Basic Settings Field The Basic Settings field allows the user to select the type of measurement that will be made by the DMM as well as specifying simple measurement parameters Measurement Mode buttons These buttons control the type of measurement the DMM will make V Sets the DMM to take dc voltage measurements V Sets the DMM to take ac voltage measurements ACV Hz Sets the DMM to take frequency measurements A Sets the DMM to take current measurements DCI A Sets the DMM to take ac current measurements ACI 1 Hz Sets the DMM to take period measurements 2W Sets the DMM to take 2 wire resistance measurements 4 Sets the DMM to take 4 wire resistance measurements C Sets the DMM to take temperature measurements e Rang
185. ows application programmers the flexibility to program at a high level and rely on the details being correct In addition the VTEXScanner driver incorporates an IVILxiSync compatible interface to make programming triggering and arming familiar This model is interchangeable with IVILxiSync unless otherwise noted but does not present IVILxiSync Interface in COM The VTEXScanner driver must expose certain segments of other drivers to allow the user to configure them These sections are only documented here if they are changed from the drivers they were taken from For more information regarding the scanner and its operation please refer to the VTEXScanner Programmer s Manual and the Scanner Soft Front Panel description in Section 7 EX1200 Scanner Overview 99 www vtiinstruments com SECTION 6 TRIGGERING OVERVIEW The EX1200 is a bridge device and therefore does not expose a triggerable action However for ease of use the scanner driver exposes a trigger model which functions like the SCPI 1999 Trigger Subsystem and works on the device and all installed plug in cards The user should be able to program to this representation except where otherwise noted This is illustrated in Figure 6 1 The trigger model is sectioned into five layers IDLE INIT ARM TRIG and DEVICE The EX1200 system reset condition places it in the IDLE state A Scanner Initiate API call begins the acquisition sequence by transitioning the
186. pasting a string into the dialog box that appears Additional details for each part of the Scanlist field are provided below Notes on Web Page Use After clicking Initiate it will take about 2 to 3 seconds for the scan to begin No action can be performed during this time To monitor this use the status indicator at the top left of the DMM display Once it moves from the Idle state it is OK to perform other actions If a scan has been initiated and seems to be stuck in the Waiting For Scan Trigger In or Waiting For Step Trigger In states check the Trigger Properties field In order for a scan to begin immediately without interaction with other instruments both inputs the Scan Trigger In and Step Trigger In should be set to Immediate Setup Field From the Setup field the user defines the sequence of connections that will be made and or broken during the setup phase After clicking on the white entry box the user can 1 click on the black configuration button on the right to start the Switch Wizard or 2 enter a valid setup sub step string directly into the box The wizard provides the most common and useful options in an easy to use interface The buttons and menus available in the wizard provide the following functions CONNECT eS TOY EE Wait before next CONNECT 5ICH 4COM gt SICH 4 0 W _ FIGURE 7 6 SWITCH WIZARD 108 EX1200 Triggering www
187. pecifies the function generator that will be used Currently only the HP33120A and HP33220A are supported e Connect button Once the fields have been populated the user can attempt to connect to these instruments by using the Connect button If an instrument is found it will be identified and its identification displayed to the right If identification or calibration information is missing from any of the devices the user will be prompted to enter it before continuing Note that only the instruments necessary for the selected calibration function s will be enabled in this field The following table indicates which procedures require each instrument Calibration Verification Routine Required Instrument s All Calibrator External DMM Function Generator Low Frequency AC External DMM Function Generator DCV Calibrator External All other routines Calibrator Calibration Data Field The Calibration Data field defines the type of calibration which will be performed as well as the functions which will be calibrated e Dataset Indicates the identification number of the current dataset The DMM can store nine sets of adjustment data in its flash memory dataset 0 is the factory calibration and is loaded when the instrument is reset and at power on Load Data Loads the selected adjustment dataset from flash and into memory Any further measurements will be adjusted by the loaded dataset Save Data Saves the curren
188. performed for instance a reference to a support case or RMA number Calibration Results When a calibration is performed the Results field is populated as the calibration procedure progresses and the following information is provided Function Indicates the DMM function to which the adjustment applies Option Indicates the option of the DMM function to which the adjustment applies Item Indicates the adjustment type that was made gain offset etc Range Indicates the measurement range to which the adjustment applies Minimum Indicates the smallest allowed value of the adjustment Maximum Indicates the largest allowed value of the adjustment Value Indicates the calculated value of the adjustment Pass Fail If the calculated adjustment is within tolerances Pass is indicated If the adjustments are not within tolerances Fail is indicated Verification Results When a verification is performed the Results field is populated as the verification procedure progresses and the following information is provided Function Indicates the DMM function being tested Option Indicates the DMM function option being tested Range Indicates the DMM range being tested Magnitude Indicates the ideal magnitude for the given test point Frequency Indicates the ideal frequency for the given test point Reading Indicates the value measured by the DUT Reference Indicates the value measured by the reference DMM or reported by the calibr
189. pgrade Reset us VN Reboot LA FIGURE 9 7 TIME CONFIGURATION PERFORMING CALIBRATION Once connected to the EX1200 and after ensuring that the time is set properly it can be calibrated using the SFP The following description provides describes how this is done Prior to beginning calibration ensure the following The EX1200 DMM device under calibration the function generator the DMM and the calibrator amplifier must all be powered up for a minimum of one hour before calibration The Agilent 3458A Auto Cal procedure must be performed prior to calibration The 5700A s Cal Zero procedure must be performed prior to calibration Ensure that the I FUSE is installed in the EX1200 DMM EX1200 Series Maintenance 143 VTI Instruments Corp Calibration Procedure 1 Connect to the embedded web page See Connecting to the EX1200 for assistance 2 Click Soft Front Panel from the Index page to navigate to the Soft Front Panel page Select the ex1200 dmm DMM from the list of available plug in modules the slot designation will vary depending on the mainframe being used 700 Sort Panel Windows Internet Explorer 124079 di Favorites fig VTI Instruments Corporation EX1200 Soft Front Panel Soft Front Panels Slot 1 1200 3048 Switch sep Soft Front Panel E rm Slot 3 ex1200 2001 Switch Network Configuration x
190. ptional Mounting Locations FIGURE 2 4 RACKMOUNT EARS INSTALLATION DIAGRAM EXPLODED FRONT VIEW EX1200 Series Preparation for Use 35 VTI Instruments Corp Rack Ears Dual Half Rack Width Option P N 70 0373 102 The rackmount installation option includes all the parts necessary to mount an EX1200 system to the front of a standard test rack Required Tools 1 2 Phillips screwdriver Parts List 1 1 Bracket Rack Ear Single Half Rack EX1262 02 41 0493 009 2 1 Bracket Front Mating EX1262 02 41 0493 006 3 1 Bracket Rear Mating EX1262 02 41 0493 007 4 13 Screw 6 32 x 1 4 F H Undercut Phillips Zinc 37 0114 025 5 2 Screw 4 40 x 3 8 Flat Head Phillips 82 Stainless Steel 37 0100 037 6 4 Screw 4 40 x 0 187 Pan Head Phillips Zinc 37 0011 018 Assembly Procedure 1 Place the chassis a protected work surface with its input connectors facing front 2 Using a 2 Phillips screwdriver install the rack ears P N 41 0482 009 on the front of the EX1200s using five 5 6 32 x 3 8 flat head Phillips stainless steel screws P N 37 0114 025 for each rack ear One ear should be installed on the left side of one chassis while the other ear is installed on the right side of the other chassis Note that the Optional Mounting Locations in Figure 2 5 allow the EX1200 to be installed in a rack either flush or recessed 3 Install the front mating bracket P N 41 0493 006 on th
191. rammable lower and upper limit values READING BUFFER STATISTICS Count Minimum Maximum Average TRIGGER Type Automatic or programmable delay SIGNAL CAT I Inputs HI or Sense HI to LO 450 V HI or Sense HI to Guard 450 V HI or Sense HI to Chassis GND 450 V LO or Sense LO to Guard 200 V LO or Sense LO to Chassis GND 450 V Guard to Chassis GND 450 V Maximum common mode voltage 450 V Using external probe 1 5 kV Current input protection 3 A 250 V fuse externally accessible EX1200 Series Introduction 19 VTI Instruments Corp RESOLUTION INTEGRATION TIME PLC 60 Hz APERTURE TIME 50 Hz APERTURE TIME RESOLUTION 10 167 ms 200 ms 6 2 digits 1 0 16 7 ms 20 ms 5 digits 0 1 1 67 ms 2ms 4 V digits lt 0 01 0 167 ms 0 2 ms 3 V digits Aperture Time is programmable from 10 us to 2 184 s PLC Aperture Time Line Frequency DC VOLTAGE 1 YEAR ACCURACY RANGE RESOLUTION INPUT Tear 5 0 C TO 55 RESISTANCE READING RANGE lt 30 RANGE gt 30 RANGE 100 mV 6 digit 1 10GO 10MO 0 0150 0 0060 15 0 uV 30 0 uV 1 V 6 digit 10GQ 10MQ 0 0060 0 0010 30 0 uV 300 0 uV 10 6 digit IlOuV 10GQ 10 MQ 0 0035 0 0007 300 0 uV 3 0 mV 100 V 6 2 digit 100 uV 10 MQ 0 0050 0 0009 3 0 mV 30 0 mV 300 V 6 digit 100 pV
192. rding use of the switch SFPs DMM DMM Calibration If a DMM module is installed in the EX1200 system the DMM and DMM Calibration tabs will be present The DMM tab allows for direct control of the DMM module while the DMM Calibration tab provides the calibration logic for the DMM module Like the Slot tabs the DMM tab can be accessed as a standalone via the Soft Front Panel pain page Please refer to DMM Soft Front Panel and DMM Calibration in this section for more information regarding use of the these SFPs Status Display The Status Display field emulates a display that might appear on the physical front panel of a scanning DMM as it displays measurements taken by instruments commanded by the scanner as it progresses through a scanlist The following information may be provided in this field Scan Count Displays the current scan number The scan count increases each time the scanlist repeats When no scan is running the field appears blank Scan Delay Indicates the minimum time to complete each scan step For instance if this is set to 1 0 and a scan step completes in only 0 75 seconds the scanner waits another 0 25 seconds before advancing to the next step Scan Status Displays the operation currently being performed by the scan engine These operations include Idle Waiting for Scan Trigger In Waiting for Step Trigger In Measuring DCV on 1 CH1_1 etc When the time between scans is faster than 0 25 seconds the display value will
193. recommended to use the 10 MQ setting The default input resistance is set to HIZ When the mainframe is power cycled or reset the default value is applied Thermal EMF Related Errors Thermoelectric voltages are the most common source of error in low level dc voltage measurements Thermoelectric voltages are generated when circuit connections are made using dissimilar metals at different temperatures Each metal to metal junction forms a thermocouple which generates a voltage proportional to the junction temperature typically on order of a few microvolts To minimize errors of this nature precautions should be taken that include using copper to copper crimped connections Basic EX1200 DMM Operation 79 VTI Instruments Corp When using switch multiplexer modules such as the EX1200 3048 each input channel pair HI and LO is routed through relays which are close to one another on the PCB to maintain the same average temperature Because of this proximity the relays generate approximately equal thermoelectric voltages on both the HI and LO channels making the differential reading across these two switches approximately cancel the thermoelectric voltages HI fi n Vs Source Voltage do K 2 Thermoelectric Voltage for Switch 1 and 2 Ww a Vreavine Voltage Displayed by DMM E DMM HH VngapiNG Vs Vri LO Z Switch Pair FIGURE 4 4 NEGATION OF SWITCH
194. rnal voltage offset due to temperature 110 EX1200 Triggering www vtiinstruments com e Trigger Delay indicates the delay in seconds that occurs between connecting a switch channel to the DMM and when the measurement is taken Valid values are 0 s to 4294 967295 s An option to select Auto appears when this field is selected Auto delay allows the DMM to automatically set the trigger delay based on the measurement configuration e Gain Indicates the m in an mx b calculation performed on the measurement data before it is returned e Offset Indicates the b in an mx b calculation performed on the measurement data before it is returned New button Adds new DMM configuration e Delete button Removes the selected DMM configuration Done button Closes the DMM Configuration Manager dialog box Notes on Web Page Use The DMM Configuration Manager only shows the most common options To fully configure the DMMSs select the DMM tab and use its Save Load Delete buttons Trigger Properties Field From the Trigger Properties field the user configures the various triggering capabilities of the scan engine e Scan Step Trigger In For the Scan Trigger the scan engine waits for the selected event to occur before starting each iteration of the scanlist For the Step Trigger the scan engine will wait for the selected event to occur before starting each scan step Immediate When selected the scanner proceeds throug
195. s backplane trigger lines allowing any trigger condition such as an over limit or measurement complete event that can be asserted by a plugin module or the integrated DMM on those backplane lines to be exported to any of the DIO channels The electrical specifications for the digital I O port are provided in Table 3 Particular note should be given to the Vinpur specification of 0 5 V to 5 5 V Exceeding that value with an external voltage source even through a resistance could permanently damage the EX 1200 Vinput 0 5 V to 5 5 V Vin 2 V min Vin 0 8 V max Vou 32 mA 2 min Vor Vor 64 mA 0 55 V max TABLE 3 2 DIGITAL I O PORT ELECTRICAL SPECIFICATIONS Trigger Bus The EX1200 provides an compatible trigger bus connector set on the rear panel of the instrument Both connectors have the same pin assignments and are wired in parallel For more information on the Trigger Bus and creating an appropriate cable please visit www lxistandard org and refer to LXI Standard Revision 1 2 and LXI Trigger Bus Cable and Terminator Specifications Rev 1 1 Function 1 3 3 V 14 TRIG PO 2 GND 15 RP TRIG NO 3 RP TRIG PI 16 RESERVED 4 TRIG 17 RP TRIG P2 5 GND 18 RP TRIG N2 6 RP TRIG P3 19 GND 7 TRIG N3 20 RP TRIG P4 8 GND 21 RP TRIG N4 9 RP TRIG P5 22 GND 10 RP TRIG N5 23 RP TRIG P6 11 RESERVED 24
196. s may not be practical for all applications especially when the wiring density is high When 4 wire measurements are impractical the user can offset the lead resistance of the 2 wire resistance to obtain a more accurate value Typically this is done by shorting the test leads measuring the lead resistance then performing the actual measurement Knowing the lead resistance allows the user to remove this error source from all subsequent measurements using the application software Test Current Selection The test current amplitude is user configurable for 2 wire and 4 wire resistance measurements Table 4 5 shows the available test currents for the range and resolution selected Range Test Current 100 Q mA 1kQ mA 10kQ 100 uA 500 nA 100 10 uA 50 uA 1MQ 5 10 MQ 700 nA 10 MQ 100 MQ 700 nA 10 MQ TABLE 4 5 SELECTABLE TEST CURRENTS Selecting a higher test current generates a higher voltage drop for a given resistance and as such improves the signal to noise ratio improving measurement accuracy Higher test currents are especially helpful when measuring low resistances Increasing the test current however can lead to self heating errors which are discussed later in this section 4 Wire Resistance Measurements The 4 wire resistance measurement method is the most accurate way to measure low resistances Lead wire and contact resistance errors are reduced significantly using this metho
197. se consists of general purpose switching and setup where the sweep phase performs measurements on its defined channels In general the following sequence should be followed to create a scanlist and retrieve its measurement data 1 Use the DMM Configuration Manager to create the required DMM configurations 2 Click on the Add Step button 3 Use the Setup Wizard to configure matrix switch channels 4 Use the Sweep Wizard to set up measurements on multiplexer switch channels 5 Select scan and step trigger inputs from the Trigger Properties field 6 Initiate the scanlist using either the Initiate button 7 Enable Get Continuous to populate the Results field as data is acquired or use the Get button to retrieve data as desired 8 Review the data or save it to a file using the Save Data button If necessary the sequence of the scanlist can be altered by clicking on the appropriate step or sweep phase and using the Move Step Up or Move Step Down buttons Once a scanlist has been configured it can be exported for use in another EX1200 system or to be saved for future use by using the Export Scanlist button When the Export Scanlist button is clicked a string describing the contents of the current scanlist is displayed This string can be copied and pasted into the VTEXScanner driver s list property to move the scanlist to a driver application This same string can be used to import a scanlist by clicking on the Import Scanlist button and
198. ser may manipulate all relays but the actions do not occur until after the Apply button is clicked Clicking on the Revert button will cause the plug in to revert to the state they were in the last time Apply was clicked Notes on Web Page Use Before controlling relays set the control mode to either Synchronous or Asynchronous e Saved States button This button allows the user to either save load or erase a switch configuration Saving a state allows the user to use the same switch set up at a later time When the Save button is clicked a prompt will appear The user selects a number 0 through 127 from this field Click OK to save the current state as the state number entered To load or 114 EX1200 Triggering www vtiinstruments com erase a saved state simply click on the Load or Erase button select the desired state number from the dialog box that appears and then click OK e Path button This button opens the Path configuration window From this window the user can define channel to channel relationships by entering the desired path in the New Path text box using the formatting described in the Help discussion Clicking on the Connect button will close the relays required to establish the Path Once defined the path can be found in the Established Paths text box The path can then be established or removed by using the Reconnect and Disconnect buttons The Details button provides information about the path selected in
199. so included Product Component Volatile Contains User Writeable Clear Procedure EX1200 Chassis 4 MB Flash No Time configuration Yes Go to the time configuration webpage and change the All Models data NTP PTP settings manual No Network Yes Perform the LCI Reset action configuration No DMM configurations Yes Use the DeleteAll API if DMM module included No SFPs No None No LXI domain Yes Use the LXIDomain API to change the value No Firmware No None No Filesystem No None 32 MB RAM Yes Operating system amp No Power off DMM data if DMM module included EX1200 DMM 512 kB Flash No FPGA images No None 32 kB Serial EPROM No User configurations Yes Use the DeleteAll API No Calibration constants Yes Use the Calibration APIs to overwrite the data 2 MB SRAM Yes Reading data Yes Power off EX1200 Switch 8 MB Flash No SFP No None Cards No DCF No None No Model amp serial No None number file No Switch card image No None 2 MB SPI Flash No FPGA Image No None EX1200 7416 8 MB Flash No Calibration Yes Use the Calibration APIs to overwrite the data No SFP No None No Stored user Yes Call Delete All API configurations No DCF No None No Model amp serial No None number file 2 MB SPI Flash No FPGA image No None 512 kB RAM x2 Yes Event data Yes Power off EX1200 7500 8 MB Flash No DCF No None No Model amp serial No None number file No SFP No None
200. source 1 Set Time Source to PTP The page will change so that it can be configured 2 Click Submit to start using PTP time EX1200 Series Maintenance 125 VTI Instruments Corp If a PTP master clock does not exist on the network an LXI device on the network will begin serving as the PTP time master The Time Configuration page allows for PTP time to be set manually From the Time Configuration page select the Set Time checkbox then select the Grandmaster radio button from the Target field and then configure the time by hand Note that the Time field should be completed using a 24 hour format REP his ttinisnits Corporation 4 1200 Time Windows Internet Expiorer go EBB hep siex 122749 Jocallca binitime ca uve search Favorites Bl VTL Instruments Corporation 1200 Time Configura a e Instruments nm Hm SFP Soft Front Panel Network Configuration 2 Configuration Date MM DD YYYY fii LXI Synchronization Time HH MM SS 1D LXI Identification Current Time Thu Dec 2 18 01 29 1999 Bink LAN Indicator Status Active Change Password 2 uU pgrade Reset VAN Reboot FIGURE 7 16 PTP CONFIGURATION PAGE To use the EX1200 as the PTP clock that will serve time on the LXI network select the
201. ssembly Procedure 1 2 3 4 5 6 7 8 Place the chassis on a protected work surface with its input connectors facing front Using a 2 Phillips screwdriver install the rack ears P N 41 0482 009 on the front of the EX1200s using five 5 6 32 x 3 8 flat head Phillips stainless steel screws P N 37 0114 025 for each rack ear One ear should be installed on the left side of one chassis while the other ear is installed on the right side of the other chassis Note that the Optional Mounting Locations in Figure 2 7 allow the EX1200 to be installed in a rack either flush or recessed Next attach a unit support bracket P N 41 0482 011 to each EX1200 using two 2 6 32 x 3 8 pan head Phillips SEMS screws P N 37 0028 037 for each bracket see Figure 2 7 Note that the bracket should be installed on the same side as the rack ear installed previously Place the rear rack support brackets P N 41 0482 011 on the inside of the unit support brackets installed in step 3 and loosely secure them using two 2 8 32 x 3 8 pan head Phillips SEMS screws P N 37 0073 037 and two 2 KEPS hex nuts P N 37 0200 832 per bracket Loosely installing the hardware will allow the rear support bracket to adjust to the proper length once installed in a rack Install the front mating bracket P N 41 0493 006 on the right side of the EX1200 where the rackmount support brackets installed on the left using three 3 6 32 x 3 8
202. t Source Specifies the event type that will cause a sample trigger event These include Immediate External Software Interval and the DMM backplane lines BPLO 7 Route This button appears when a backplane line BPLO 7 is selected for Source Clicking this button launches a dialog box that allows the user to select an external trigger line LXIO 7 DIOO 7 LANO 7 or ALARMO to connect to the chosen backplane line Slope For hardware trigger lines this parameter indicates the slope of level change either Rising or Falling that will cause a sample trigger event Count Indicates the number of sample triggers that will be accepted before returning to the Trigger layer Valid values are 1 and 1 to 2 147 483 647 where 1 sets an infinite count Delay Indicates the time in seconds the DMM will wait after getting a sample trigger event before it performs a measurement Valid values 0 0 to 4294 967295 Interval When Interval is selected as the Source this indicates the time in seconds between sample trigger events Valid values are 0 0 to 4294 967295 e Trigger Output These parameters specify the trigger events generated by the DMM Measurement Complete Upon completion of a measurement the selected event will occur These events include None External and BPLO 7 Over Limit When a measurements exceeds the High and or Low Limit settings the selected trigger event is asserted These include None
203. t adjustment data into the selected dataset Dump Current Data Saves the currently loaded adjustment data in a csv format by default The user will be prompted to provide a storage location Auto Save When selected the data obtained while running a calibration procedure will be automatically saved to the selected dataset upon completion provided all calculated adjustments are within tolerances Temperature Field The Temperature field provides the internal and external temperature during calibration Internal Displays the current internal temperature of the DMM e External The current ambient temperature should be entered here when a calibration or verification procedure is started 122 EX1200 Triggering www vtiinstruments com Calibration Status Field The Calibration Status field provides an indication of how close calibration is to completion Begin calibration by clicking on the Initiate button in this field Results Panel The Results panel provides access to the results of the calibration or verification operation Calibration verification begins by clicking on the Initiate button The following options are provided in the panel Technician This field must be filled in prior to saving the results data It identifies the person who performed this calibration or verification Reason This field must be filled in prior to saving the results data The contents should explain the reason the operation was
204. t of instruments that are available to command in the 1200 series chassis After selecting an instrument the soft front panel specific to that instrument will appear An example of the EX1200 SFP page can be seen in Figure 7 3 Corporation E S400 Panel Windows 2 122749 2 7 ie Favorites Bl VTI Instruments Corporation EX1200 Soft Front Panel v Instruments NE index sre Soft Front Panel EA led Configuration 1200 dmm DMM 7B time Configuration LXI LXI Synchronization 1D LXI Identification ga Blink LAN Indicator a Change Password E JI Reset EN Reboot FIGURE 7 3 EX1200 SOFT FRONT PANEL MAIN PAGE EX1200 Series Maintenance 105 VTI Instruments Corp Once a soft front panel is selected a popup will appear displaying the appropriate information When the current SFP is no longer needed simply click on the grey X in the upper right corner to close the SFP and return to the main Soft Front Panel page FIGURE 7 4 SFP POPUP FOR SCANNER SCANNER SOFT FRONT PANEL The EX1200 scanner allows the user to configure setup a scanlist The Scanlist field allows for the creation of a list which can be sequentially executed once the Arm and Trigger requirements have been met
205. t operate in a more restricted temperature range Thermistors are resistance based passive transducers whose output resistance varies with temperature changes By measuring the resistance of the thermistor the temperature can be derived The following thermistors are predefined on the EX1200 DMM and use built in software conversions 2 252 kQ default 5 kQ and 10 kQ Custom thermistors can be defined by providing the appropriate variables in the Steinhart Hart equation A B and C refer to the thermistor manufacturer s data sheet for more information The equation is as follows Tk A BInR Where calculated temperature Kelvin In R natural log of measured resistance value of thermistor T temperature in C A B C curve fitting constants Curve fitting constants used by the DMM for supported thermistor types 2252 Q at 25 C 5000 at 25 C 10 kQ at 25 C Constant Series 44004 Series 44007 Series 44006 A 0 0014733 0 0012880 0 0010295 B 0 0002372 0 0002356 0 000239 1 1 074 x 107 9 557 x 10 1 568 x 107 TABLE 4 12 THERMISTOR CURVE FITTING CONSTANTS Connecting to the DMM Any thermistor can be connected to the front panel terminals of the DMM using suitable connectors Though this method is not preferred in fixed installation this can be used to quickly make readings and troubleshoot field wiring Since thermistors is a bilateral resistive device
206. the EX1200 is synchronized On a LAN that consists of multiple subnets this indicates the MAC address of the parent clock on that particular subnet PTP Version indicates the version of the IEEE 1588 A 1 indicates compliance to Version 1 or IEEE 1588 2002 PTP State indicates whether the EX1200 is a master slave faulty disabled passive or unlocked Current PTP Time indicates the number of seconds since midnight January 1 1970 UTC coordinated universal time Current Local Time indicates the date and time in 24 hour format Grandmaster Traceability to UTC indicates how the grandmaster is synchronized to the UTC The values provide an indicator of how closely synchronized the grandmaster is to UTC time Value Clock Source UTC Synchronization ATOM UTC Atomic Clock Less than 100 ns GPS GPS Receiver Less than 100 ns NTP Network Time Protocol Less than 50 ms HAND Manually Automatically Set Less than 10 s INIT User Defined Not specified DFLT None None TABLE 7 2 UTC GRANDMASTER CLOCK IDENTIFIERS Current Variance of Parent this function not currently supported by the EX1200 IEEE 1588 Domain indicates the instrument s PTP subdomain Typically this indicator is _DFLT 128 EX1200 Triggering www vtiinstruments com LXI Module to Module Parameters LXI Domain an 8 bit number 0 to 255 that indicates the domain the EX1200 is using for LAN events All events sent by this devic
207. the Established Paths text box New Path iis I Established Paths FIGURE 7 12 PATH CONFIGURATION WINDOW e Reset button This button clears the existing state of the relays and places them back in their default positions Device Info If the Device Info tab is clicked information regarding the selected instrument will be displayed including the versions of the SFP firmware hardware and configuration De vicelnto Monitor and Control Instruments Corporation ex1200 3096 ex1 200 3096 Version Information Soft Front Panel Version 3 6 0 Hardware Version FPGA Version 5 HW Version 0 Configuration Version 2 0 FIGURE 7 13 DEVICE INFORMATION WEB PAGE EX1200 Series Maintenance 115 VTI Instruments Corp DMM SOFT FRONT PANEL The DMM Soft Front Panel provides an interface for the user to configure and perform measurements with an EX1200 DMM Note that this option is only available on EX1200 systems where the DMM is installed Device Information Monitorand Control Calibration ock ex Basic Settings Trigger Settings Source ure mmedi W Measurement Complete Slope Rising W Slope Rising W None v eu Cum 1 Count 1 Over Limit None Y ex DE ee Range Auto Range On t Auto Delay Delay 0 0 H
208. there are no polarity restrictions Sense HI Input HI Input LO Sense LO Thermistor DMM Front Panel FIGURE 4 20 DMM THERMISTOR CONNECTIONS 96 Basic EX1200 DMM Operation www vtiinstruments com If the thermistors are connected to a multiplexer card the wiring is similar to that of a 2 wire voltage measurement without the polarity constraints as the thermistors are bilateral passive devices DMM Backplane ag Log e 9 O1 Idd Thermsitors EX1200 Mainframe Multiplexer Cards FIGURE 4 21 THERMISTOR CONNECTIONS VIA DMM Bus Programming Interface The VTEX DMM and VTEX Scanner drivers provide the access to the features of EX1200 DMM Refer to the below functions of the driver in its documentation IVTEXDmmTemperature Interfac IIviDmmTemperature Thermistor Property Scanlist Application Note When using scanlist with temperature measurements it is important not to make any configuration modification between running the scan list and reading the data For example using the following sequence would result in an erroneous reading 1 Set up config CJC with 10k thermistor 2 Runscanlist 3 Change CJC to use 5k thermistor instead 4 Read back data The EX1200 performs the needed temperature calculation based on the current settings As a result the data taken with the 10k thermistor would have 5k related math applied resulting in incorrect
209. tion Connect the power line cord to the EX1200 series mainframe outlet then connect all input signals to the plug in cards then turn the power supply ON Do not touch exposed pins or connectors SOFTWARE INSTALLATION The fastest way to begin controlling an EX1200 is to discover the unit using LXI Discovery Tool utility and then manipulate the instrument s Java based SFP To do this the following is required A PC or laptop computer Microsoft Windows XP 7 8 OS and Internet Explorer IE An internet connection Java Runtime Environment JRE version 6 0 or later LXI Discovery Tool EX1200 Series Preparation for Use 51 VTI Instruments Corp An executable for installing JRE is available on the VTI Instruments Corp Drivers and Product Manuals CD provided with the EX1200 If JRE is currently installed on the host PC the software installation instruction for this software can be skipped The LXI Discovery Tool searches for all LAN based VTI devices on the network and can be downloaded from LXI Consortium Website This utility leverages Apple s Bonjour plug in please use version v2 0 2 and later for proper operation of the LXI Discovery Tool Java Installation Java Runtime Environment JRE is required to access the SFP page of the EX1200 Prior to installing JRE ensure that all IE sessions have been closed To install JRE insert the VTI Instruments Corp Drivers and Product Manuals CD into the host PCs
210. tion Option P N 70 0370 102 The rackmount installation option includes all the parts necessary to mount an EX1200 to the front and rear of a standard test rack Required Tools 1 2 Phillips screwdriver 2 5 16 wrench or socket Parts List Item Qty Description 1 2 Bracket Rack Ear 1267 68 69 41 0494 010 2 2 Bracket Rack Ear Support EX1267 8 9 41 0494 020 3 2 Bracket Rack Ear Rear Unit EX1267 8 9 41 0494 021 4 2 Handle 0 25 dia x 1 25 H X 4 0 L 8 32 Aluminum Black 37 0254 000 5 8 Screw 8 32 x 1 2 Flat Head Phillips 82 Stainless 37 0129 050 6 8 Screw 6 32 x 3 8 Flat Head Phillips 82 Stainless Steel 37 0173 037 7 4 Screw 6 32 x 1 4 Pan Head Phillips Sq Cone SEMS Zinc 37 0028 025 8 4 Screw 8 32 x 3 8 Pan Head Phillips Sq Cone SEMS Zinc 37 0073 037 9 4 Nut Hex KEPS 8 32 Steel Zinc 37 0200 832 Assembly Procedure 1 Place the chassis on a protected work surface with its input connectors facing front 2 Using a 2 Phillips screwdriver install the rack ears P N 41 0494 010 on the front of the EX1200 using four 4 6 32 x 3 8 flat head Phillips stainless steel screws P N 37 0173 037 for each rack ear Note that the Optional Mounting Locations in Figure 2 11 allow the EX1200 to be installed in a rack either flush or recessed 3 Next attach the unit support brackets P N 41 0494 020 to the EX1200 using two 2 6 32 x 3 8 pan head
211. truments Corp Trigger Model Status INITILIZED 0 IDLE IDLE ARM ACTIVE 0 TRIG ACTIVE 0 LAYER ABORT SAMP ACTIVE 0 ole ete DEVICE ACTIVE S On n INITILIZED 1 INIT ARM ACTIVE 0 TRIG ACTIVE 0 LAYER SAMP ACTIVE 0 DEVICE ACTIVE 0 IE Wait for SW ARM ARM Event Event INITILIZED 1 ARM ACTIVE 1 ARM TRIG ACTIVE 0 LAYER ARM Delay SAMP ACTIVE 0 DEVICE ACTIVE 0 Decrement ARM COUNT TRIG IMM Wait for SW TRIG TRIG Event TRIG Event INITILIZED 1 ARM ACTIVE 0 TRIG TRIG Delay TRIG ACTIVE 1 LAYER SAMP ACTIVE 0 DEVICE ACTIVE 0 Decrement TRIG COUNT SAMP IMM Wait for swsamP SAMP Event ee us INITILIZED 1 ARM ACTIVE 0 SAMP TRIG ACTIVE 0 LAYER SAFE Doy SAMP ACTIVE 1 DEVICE ACTIVE 0 Decrement SAMP COUNT Acquire ADC Counts DEVICE Store Reading LAYER A INITILIZED 1 ARM ACTIVE 0 TRIG ACTIVE 0 0 Calibrate DEVICE ACTIVE 1 Range Delay Reading Range Up Down UNDER LIMIT FIGURE 6 1 EX1200 SERIES TRIGGER MODEL 102 EX1200 Triggering www vtiinstruments com SECTION 7 WEB PAGE OPERATION INTRODUCTION To open the embedded web page start the
212. ts 1 through 5 Slots 6 through 10 Slots 11 through 16 FIGURE 1 BACKPLANE POWER SEGMENTS IN THE 12 8 When power requirements are calculated for these mainframes the calculations should consider each backplane segment as an independent power system The total power useable on a segment is defined by the Useable Power specification for the mainframe being used As the EX12x8 has a power supply dedicated to generating the 3 3 V output no efficiency correction is required making the conditions required somewhat simplified compared to the EX12x6 1 Posy Psy X PusgABLE 2 P 24V lt 84 W 3 Psy 75 W 5 No rail can exceed the maximum current per rail Particular attention should be paid to the 24 V rail To illustrate the same cards will be used as in the previous example and they will be installed in slots 1 2 and 3 of an EX1268 Poay 24 V X 1200 3608 lay EX1200 2001 ab Day EX1200 3048 Puy 224 V x L4A 0A 4 0A Pay 33 6 W Psy 5Vx Usy EX1200 3608 Isy EX1200 2001 Ex1200 3048 Psy 5 V x 1 000 A 0 454 A 0 234 Psy 8 44 W P33y 3 3 V x 33v EX1200 3608 Ts 3y gx12002001 13 3 Ex1200 3048 80 efficiency P33y 3 3 V x 0 300 0 131 A 0 129 P33y 1 848 W For this EX1268 the remaining three slots have 77 96 W available for plug in modules to use on the 5 V and 24 V rails while 47 652 W remain on the 3 3 V rail on the remai
213. uments Corp e Range Delay The amount of time the DMM takes between measurements on the same function but on different ranges Auto checkbox When selected the auto range function is enabled Delay sec Sets the range delay Valid values are between 0 and 4294 967295 s e Auto Zero When enabled the DMM automatically tares itself against an internal reference before each reading e Power Line Hz drop menu Selects either 50 0 Hz or 60 0 Hz as the ac frequency of the DMM s power source Aperture Time Indicates the time in seconds over which the DMM will integrate the analog inputs The longer the time the more accurate the reading Note that this property and Digits are interrelated hardware settings Thus changing one affects the other Valid values vary depending on the power line frequency and the mode setting For 60 Hz PLF 0 00167 0 0167 0 167 and 1 67 For 50 Hz PLF 0 0002 0 002 0 02 0 2 and 2 0 For Frequency and Period modes 0 0014 0 014 and 0 14 Saved Configurations Field The Saved Configurations field allows the user to store recall and remove predefined settings for the DMM To save a configuration simply define the configuration using the DMM soft from panel then click on the Save button in the Saved Configurations field A prompt will appear requiring a name for the configuration Once a name is entered only alphanumeric characters dash and underscore are allowed click the OK button
214. ve to the frequency of the applied signal This means that it can measure the RMS value of signals that have both ac and dc components This however is not the case for the EX1200 DMM as it measures only the RMS of the of ac component of the signal Here the unwanted frequencies including DC are rejected by the signal conditioning stage before the RMS value is evaluated This is similar to an ac coupled input system with a selectable cut off frequency Low frequency accuracy is severely impacted by harmonics generated during the RMS conversion To get better low frequency accuracy in SLOW MEDIUM mode the dmm employs low pass digital decimation filters 1 Low Filter This filter guarantees frequency accuracy between 3 Hz to 300 kHz This filter has a sharp cutoff and hence a large settling time The ADC integration time is fixed at 0 01 PLC and auto zero is forced on The resultant resolution is always 61 2 digits 2 Medium Filter This filter guarantees frequency accuracy between 20 Hz and 300 kHz This filter does not have as sharp a cutoff as the SLOW filter hence the settling time is smaller compared to the SLOW mode The ADC integration time is fixed at 0 01 PLC and autozero is forced on The resultant resolution is always 6 digits 3 High Filter This filter allows frequencies between 200 Hz and 300 kHz This mode uses the ADC s frequency response to reject the RMS convertor harmonics The integration time and auto zero settings can b

EX1200 SERIES - VTI Instruments

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