EX1200-7500 - VTI Instruments
Contents
1. Clamp Voltage Latch Selection Output voltage Veiamp Y Emulation Mode Ie Select 5 9 a 88 E Latch DataOut Oe DATA Px Ch gt 22 a zi 65 8 o 28 5 9 Latch _ _ 8 Y Over Input a Current Detect w Detect Hysteresis co co Backplane Signals ERA EXT GEN pl IM EXT GATE ACQ EXT CLK FIGURE 5 1 EX1200 7500 BLOCK DIAGRAM OVERVIEW The EX1200 7500 supports a static mode where user driven software commands execute reading writing data channels on a per port basis Ports can also be grouped together as up to four continuous ports 0 through 3 and 4 through 7 for reading and writing Each port can be programmed for direction and polarity The default direction is input and default polarity is normal Ports also need a voltage reference before data can be read or written this voltage is used for pulling up open drain data lines and setting reference voltage for threshold detection in input path No voltage should be applied on data lines before voltage selection and during voltage configuration process User can select a voltage from 3 3 V 5 V 12 V or 24 V provided on the module or supply a volta2. OO0000000000000000000000000000000 OOO0O00000000000000000000000000000 ACCO 3U Orientation 3 FIGURE 2 3 EX1200 7500 FRONT PANEL DETAIL Front Panel Connector Pins Description Pin Name EXT CLK Description EXT CLK is a bi directional signal Based on Pattern mode clock source this signal will act as input or output an output the EXT signal outputs to the front panel during Pattern generation and acquisition when the Pattern mode clock source for is internal This output is also controlled by the Clock Output Enable bit As an input the signal is used as input for Pattern generation and acquisition when the Pattern mode clock source is External and is Trigger Source during Asynchronous mode EXT_GATE_ACQ This signal is an input to the EX1200 7500 Based on the trigger source selected this signal is used during pattern acquisition as a External sync signal EXT_GATE_GEN Another EX1200 7500 input that based on the trigger source selected is used during pattern generation as a External sync signal EX1200 7500 Using the Instrument 17 VTI Instruments Corp EX1200 TB160SE TERMINAL BLOCK VTI offers a single ended terminal block for the EX1200 7500 P N 70 0367 005 The terminal block simplifies cabling by
3. Instruments EX1200 7500 64 CHANNEL 2 5 MHZ DIGITAL INPUT OUTPUT USER S MANUAL P N 82 0127 005 Released October 8 2010 Revised February 26 2013 VTI Instruments Corp 2031 Main Street Irvine CA 92614 6509 949 955 1894 VTI Instruments Corp TABLE OF CONTENTS TABLE M 2 iG uli ni 4 Matratity ERU tete Ir dS 4 Limitation of Warranty 4 Tradematks 2 nre RH IHR 4 Restricted Rights ie reir teet etie 4 GENERAL SAFETY INSTRUCTIONS e ient emet e tese ehe e 5 Terms and Symbols eI nie ete Rey Bae ae 5 5 SUPPORT RESOURCES 7 SECTION PE H 9 INTRODUCTION A DIA On E onte 9 wu m 9 EX1200 7500 Specifications eee iter it deter Rte ere eee e 10 EX1200 7500 AcCeSSOFIES aene entr e tea peo Teen praes 11 Toro uoce E 13 USING THE INSTRUMENT tete et EUN eee RR MA Ip eroe re 13 Unpacking iu inner E EE E ne peer eee 13 Determine System Power Requirements ss 13 Pl g3n Medule Installation rete ie toe d rre 13 Maximizing Measurement Performance siennes 14 Wa
4. ti ee en sen D EIER 13 F firmware e oe en eden 32 I IEEE 1588 tme ir ett INCE X WED instrument sensitivity luc L LAN Instrument Connection and Upgrade utility 31 LInC U See LAN Instrument Connection and Upgrade utility LEN 22 LXI version 522 P plug in module installati n s t c Red 13 13 power consumption 13 programming Dee 21 S Specifications eee e eR NE 10 11 T terminal block ee t e a ena o terminal block receiver 3s theory of operation entere eee inire ei W io Bhce p UTR HERR RR DEUM 5 EX1200 7500 Index 49
5. Polarity Normal No Time Polarity Direction Voltage VoltageSour OverCurrent Clear Table Clear Fifo Save Data Connected FIGURE 4 4 EX1200 7500 SOFT FRONT PANEL NORMAL MODE At the top of the Monitor and Control menu the Mode Select drop menu is used to set the EX1200 7500 for either Normal or Pattern mode The settings for each mode will now be discussed NORMAL MODE CONFIGURATION When normal mode is selected the user can define each port independently Normal mode is further discussed in Normal Mode in Section 3 Port Configuration Fields For each Port the following settings can be configured Port 1 00000000 Data Voltage Direction Polarity Normal v Polarity Inverse FIGURE 4 5 PORT CONFIGURATION FIELDS e Data Indicators The LED indicators in each port configuration section indicate the data value this is being sent by or received by the indicated port The data is an 8 bit integer with the green LEDs indicating an output high 1 and a red LED indicating an output low 0 e OC If an over current event occurs the OC indicator will turn red indicating that actions should be taken by the user 36 EX1200 7500 SFP Operation www vtlinstruments com e Data When the direction is set to Output the user can enter the data value that will be sent on the selected port e Voltage Selec
6. BR Ww Configuring Ports Once a reference to the port has been acquired setting the port s properties adjusts its behavior Port Parameters Data This is used to either get or set the data on the selected port Setting data on an input will have no effect Setting data on a port with no voltage set is not allowed Direction Determines if the port is input or output OverCurrent Read Only Indicates if the device is in an over current condition EX1200 7500 Programming the Instrument 25 VTI Instruments Corp LatchedOverCurrent The OverCurrent property gives the current state of the over current indication This property indicates whether an over current condition has occurred since the card was powered on It can be reset with the ResetOverCurrent method below Polarity Sets the polarity of the port If the port is an input the user will see the readback inverted If the port is an output values written to the port will be inverted on writing and readback leading to the user retrieving the same value that was written The output will be the inverse of this value VoltageRange Sets the voltage range of the port to one of the supported voltage ranges listed below e Voltage Source Sets the voltage source to Internal or User In User voltage mode an external voltage must be applied to the USER voltage pins on the front panel for proper operation of the device see Table 2 1 for more information on Use
7. for ports Each port has a set of programmatically controlled switches that let the user select a voltage from 3 3 V 5 V 12 V 24 V and User supplied voltage which can be anywhere from 3 3 V to 60 V In addition LV and TTL emulation modes can be selected which use 3 3 V and 5 V as Ve Ayp respectively and insert low impedance pull up resistor in the path to source 4 mA OUTPUT SECTION The output section of each channel consists of an N channel MOSFET pull up resistors and over current sense circuitry When a 1 is driven on channel the MOSFET is turned off and data line is pulled up to Vc_amp using appropriate pull up resistor 330 Q for LV emulation 500 Q for TTL emulation and 100 otherwise The rising voltage level at data channel exhibits RC charging with a rise time of approximately 70 us with 100 kQ pull up resistor and about 600 ns with low impedance pull up in TTL and voltage configurations When 0 is driven on channel the MOSFET is turned on and data line is connected to ground via a current sense resistor of 0 3 The falling edge is much sharper with a maximum fall time of 300 ns approximately When the 46 EX1200 7500 Theory of Operation www vtlinstruments com port is set as input the data lines are pulled up using 100 kQ resistor Please refer to electrical characteristics for output voltage levels with different load resistance The load resistor and pull up resistor form a voltage divider of
8. LXI Identification f E Blink LAN Indicator a Change Password Upgrade Reboot FIGURE 4 3 EX1200 SOFT FRONT PANEL MAIN PAGE EX1200 7500 SFP Operation 35 VTI Instruments Corp MONITOR AND CONTROL PAGE By default the EX1200 7500 SFP opens to the Monitor and Control view From this view the user can define the DIO s mode its ports configurations and allow access the data stored in FIFO Although the SFP does not expose the entire functionality of the DIO the SFP can be used to set up the EX1200 7500 in most applications Device Information MONItOr and Control Made Select Normal Port 1 Data Polarity Port5 Port2 Port 3 255 Data Voltage 50 Voltage 5 0 Direction Output Direction Input Normal Polarity Inverse Port6 00000000 Data Port 4 00000000 182 Data 0 Voltage 33 Voltage 3 3 Direction Output Polarity Port7 Direction Input Normal Polarity Inverse 00000000 Port 8 00000000 Data Data Voltage 00 Data Voltage 0 0 Voltage 0 0 Voltage 0 0 Direction Input Direction Input Direction Input Direction Input Polarity Normal Polarity Normal Polarity Normal
9. EX1200 7500 Additional information can be found in the driver help file If the instrument will be used on a Linux system a chm viewer must be installed on the host PC examples of these programs can be found at the following URL http www linux com news software applications 8209 chm viewers for linux RELATED SOFTWARE COMPONENTS IVI COM Driver IVI C Driver LabView Driver Linux C Driver USING THE DRIVER The EX1200 7500 may be used in a variety of environments including Visual Basic C C LabView VTI instruments provides a IVI C and IVI COM compliant driver as well as a shared object that can be used on Linux systems that comply with the Linux Standard Base Version 3 1 Here is how to use the driver in each environment 1 Visual Studio C import IviDriverTypeLib dll no namespace import VTEXDio dll no namespace 2 CH Add a reference to VTEXDio dll in the project Include the following at the top of any code file that will access the driver using VTI VTEXDio Interop 3 C C on Windows Link against VTEXDio lib and include VTEXDio h in the file 4 C Linux Link against opt vti lib libdio so and include all the headers in opt vti include in the source file 5 LabView Copy the driver package to the lt Labview gt instr lib directory and access all relevant VIs EX1200 7500 Programming the Instrument 23 VTI Instruments Corp USING THE EX1200 7500 INITIALIZING CLOSING THE
10. IVI specification this option specifies whether or not to cache the value of attributes Caching allows IVI drivers to maintain certain instrument settings to avoid sending redundant commands The standard allows for certain values to be cached always or never In VTI IVI drivers all values used are of one of these types As such any values entered have effect e QueryInstrumentStatus Queries the instrument for errors after each call is made As implemented in the VTI IVI drivers instruments status is always queried regardless of the value of this property 24 EX1200 7500 Programming the Instrument www vtlinstruments com DriverSetup Must be last and contains the following properties o Logfile Allows the user to specify a file to which the driver can log calls and other data o Logmode Specifies the mode in which the log file is opened The allowed modes are e truncate s the file to zero length or creates a text file for writing e opens the file for adding information to the end of the file The file is created if it does not exist The stream is positioned at the end of the file o LogLevel Allows the user to determine the severity of a log message by providing a level indicator to the log entry o Slots This is the most commonly used option and it allows for a slot number or a slot number and a card model to be specified Slots 2 Just slot 2 Slots 2 EX1200_3048 slot and card model Slotsz 2 3
11. Multiple slots InterchangeCheck Boolean option that enables disables IVI Interchangeability checking As implemented in the VTI IVI drivers values entered for this property have no effect RangeCheck Boolean option that enables or disables driver validation of user submitted values As implemented in the VTI IVI drivers validation of user inputs is always performed at the firmware level regardless of this property s value RecordCoercions Boolean option that enables driver recording of coercions As implemented in the VTI IVI drivers coercions are handled in the firmware and cannot be recorded BASIC OPERATION The EX1200 7500 has two basic modes of operation Normal mode and Pattern mode In Normal mode the instrument s ports can be configured independently and written to read from at any time In Pattern mode four ports are inputs and four ports are output and they are all clocked off a single source Every time the clock ticks data 15 written to the output and read from the input The VT NORMAL MODE In VT EXDio Mode property is used to select between Normal and Pattern modes Normal mode each port can be configured individually This is done through the EXDio Normal Ports interface Each port is part of the Items and is referenced by the port name which is a string The Port naming is as follows Port Name Port Index PORTI 1 2 PORT3 PORT4 PORTS PORT6 PORT7 8
12. providing screw terminal blocks for user wiring Signal pin mapping for the EX1200 7500 can be seen in Table 2 2 Conn Conn n Ref Signal Ref Signal Pin Signal Pin Ref Signal Pin DE GND D E2 m DATA3 1 15 GND D C14 DATA3 6 A22 me GND D D2 5 GND D 14 GND D 14 Ts DATA3 7 A23 28 DATA7 3 E3 GND D A13 DATAA 1 C15 GND D A20 22 GND D D3 DATAI 8 12 GND D DATA3 4 18 MR DATA7 4 E4 DATAI 6 10 DATA4 2 C16 Bs GND D 19 zis GND_D D4 USER V7 D10 USER V3 16 Es DATA3 2 16 ae DATAT 5 E5 m GND D E10 DATA4 3 C17 DATA3 3 A17 Hs GND D D5 DATA2 7 Cll GND_D B17 1128 GND_D D32 pe DATA7 6 E6 P GND D 11 4 4 C18 B DATA6 6 E30 GND D D6 DATAI 7 11 GND D 18 GND D D30 GND D E7 GND D B12 GND D C19 DATA6 5 E29 T DATA7 2 D7 DATA2 8 C12 GND_D B19 GND D D29 DATAT 7 E8 P USER V2 B13 GND D C20 Ti GND D E31 TH GND D D8 m GND D C13 USER V4 B20 EA GND D D31 115 DATA7 8 E9 DATA1 5 A9 DATA6 7 C32 Bs DATAS 8 C30 De GND D D9 GND_D A8 GND_D EBs GND_D B30 0 DATA2 1 C3 GND_D A7 DATA6 4
13. 0 local 3 9 0 devel 10 1 4 67 EX1266 125225 ex 125225 local 3 9 0 devel 10 1 4 4 1266 122749 ex 122749 local 3 7 0 10 1 4 135 EX7000 583670 583670 3 9 2 10 1 4 83 EX2500A 125294 EX2500A 646864 local 2 1 0 10 1 4 23 1629 119639 10 1 4 115 1 6 0 10 1 4 115 Found 7 devices a FIGURE 4 1 LINC U DISCOVERY TAB WITH AN EX1268 SELECTED Alternatively the EX1200 may also be discovered using Internet Explorer s Bonjour for Windows plug in by entering the mainframe s IP address into the address bar of any web browser to view the embedded web page or using VXI 11 For more information on discovery methods refer to the EX1200 Series User s Manual P N 82 0127 000 EX1200 7500 SFP Operation 33 VTI Instruments Corp GENERAL WEB PAGE OPERATION When initial connection is made to the EX1200 the instrument home page Index appears see Figure 4 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 EP Corporation e Sp200 Interner Exponer 227 4 sly Favorites Instruments Corporation EX1200 Index EX1 200 Index Instruments f index Moe Manufacturer VTI Instruments Corporation SFP Soft Front Panel Ser
14. Corp CONNECTOR PIN SIGNAL ASSIGNMENT The connector pins and their signal assignments are shown in Table 2 1 and Figure 2 1 below For mating connector and accessory information please see the 1200 7500 Specifications Pin Signal Pin Signal Pin Signal Pin Pin Signal A1 GND B1 GND C C1 GND D1 GND E1 GND A2 GND B2 GND C2 GND D2 GND E2 GND A3 1 1 B3 GND C3 DATA2 1 D3 GND E3 DATAT 3 4 1 2 B4 GND C4 DATA22 D4 GND E4 DATA7 4 A5 DATA1 3 B5 GND 5 DATA2 3 D5 GND ES DATAT 5 A6 1 4 B6 DATAT 1 C6 2 4 06 GND DATAT 6 A7 GND B7 GND C7 GND D7 DATA7 2 E7 GND A8 GND B8 GND C8 GND D8 GND E8 DATAT 7 A9 DATAI 5 B9 USER VI C9 DATA2 5 D9 GND E9 DATAT 8 A10 DATAI 6 B10 GND C10 DATA2 6 D10 USER_V7 E10 GND All DATAI 7 B11 GND C11 DATA2 7 D11 GND E11 DATA8 1 12 DATAI 8 B12 GND C12 DATA2 8 D12 GND E12 DATA8 2 A13 GND B13 USER V2 C13 GND D13 EXT CLK E13 DATAS 3 A14 GND B14 GND C14 GND D14 GND E14 DATAS8 A4 A15 DATA3 1 B15 GND C15 4 1 015 GND E15 GND A16 DATA32 B16 USER V3 C16 4 2 D16 GND E16 GND A17 DATA3 3 B17 GND C17 DATA4 3 D17 USER_V8 E17 DATA8 5 A18 DATA3 4 B18 GND C18 DATA4 4 D18 GND E18 DATAS 6 A19 GND B19 GND C19 GND D19 GND E19 DATAS 7 A20 GND B20 USER V4 C20 GND D20 GND E20 DATAS 8 A21 5 21 GND C21 4 5 021 EXT GATE GEN E21 GND A22 DATA3 6 B22 GND C22 DATA4 6 D22 GND E22 G
15. D 31 Using Multiple Synchronized Instruments 32 Drusum LL 32 2 1200 7500 7500 WWNW Vvtiinstruments com SECTION E E E EL S 33 SEP OPERATION edente ttu 33 Introduction ist Ms Rte PRU TO DR RET DRE De ert RH UP DERE 33 General Web Page Operation od ere ues du eer ed o deor i de ires 34 VTL Instruments Logo x a E E tB IE ROSE uim i erbe e E tee DRE 35 EX1200 7500 Soft Front Panel saine tete 35 Monitorand Control oce rir ee DOR e ree e re E Dr 36 Normal Mode ConfIBUFatIOI eU RE erbe ete ect ie etae ic 36 Port Configuration Fields 5 tede e ete tetigere tete re tette 36 Data Acquisition Section emt e Peppe e reed See eroe Re ie exer 37 Data E e beoe epa eoo obe pie 37 Pattern Mode Configuration sss reg eee eet iei dps antennes A 39 Pattern Mode Common Settings sise 40 Pattern Generation aree eene He iP EE P UR 40 Pattern Acquisition Settings eire eben te pe DR reo eU Ce E 42 Device Into VAD ese died p bae pst eR D een edt pU reete tiia Ga eden tese 43 SECTION Moe 45 THEORY OF OP RATION 0 45 Introduction e et e ete edet leet d e cte ide
16. E RATE Pattern gen disabled 2 5 MHz Patterngen enabled 2MHz oo DATA INPUT CLOCK SOURCES Internal clock front panel input POWER CONSUMPTION 3 3 V 0 260 A SV 0 450 A 24 V 0 0240 A 10 EX1200 7500 Introduction CONNECTOR INFORMATION EX1200 7500 ACCESSORIES www vtlinstruments com STRAIN RELIEF BRACKET KIT INCLUDES CONNECTOR VTI Part Number 70 0363 504 recommended accessory STRAIN RELIEF BRACKET KIT WITHOUT CONNECTOR VTI Part Number 70 0363 503 CRIMP PIN VTI Part Number 52 0109 000 includes 100 crimp pins Manufacturer Part Number ERNI 234064 MATING CONNECTOR VTI Part Number 27 0088 160 one per board Manufacturer Part Number ERNI 024070 CRIMP PIN VTI Part Number 27 0088 000 Manufacturer Part Number ERNI 014729 Crimp TOOL DIN VTI Part Number 46 0010 000 Manufacturer Part Number ERNI 014374 EXTRACTION TOOL DIN VTI Part Number 46 001 1 000 Manufacturer Part Number ERNI 471555 TERMINAL BLOCK INFORMATION Description EX1200 TB160SE single ended module VTI Part Number 70 0367 005 UNTERMINATED CABLE ASSEMBLY Description 160 pin unterminated cable assembly 3 ft VTI Part Number 70 0363 505 EX1200 7500 Introduction 11 VTI Instruments Corp 12 EX1200 7500 Introduction www vtiinstruments com SECTION 2 USING THE INSTRUMENT UNPACKING When an EX1200 7500 is unpacked from its shipping carton the content
17. E26 Sn GND D C31 GND D B3 DATA1 4 A6 EXT_GATE_ACQ D26 GND C B31 GND D C2 DATA 1 3 A5 DATA6 2 E24 i GND_D B29 Du GND D B2 DATAI 2 4 USER V6 D24 DATAS 7 C29 ak DATA2 2 C4 DATAI 1 A3 GND D E27 TEE GND D B28 22 GND D B4 GND_D A2 GND_D D27 DATAS 6 C28 i DATA2 3 C5 GND D 10 GND D E28 Tea GND D C25 194 GND D B5 5 DATA2 6 C10 GND_D D28 GND D B25 5 DATA2 4 C6 GND_D E15 DATA6 1 E23 GND D B27 1 DATAT 1 B6 GND D D15 GND_D D23 TES DATAS 5 C27 T27 GND D C7 T67 GND D E16 GND D E22 UEM GND D B26 18 EX1200 7500 Using the Instrument www vtiinstruments com GND_D B7 GND D D16 GND D D22 GNDD C26 GND D C8 DATAS 5 E17 GND D D25 GNDD A26 GND D B8 USER V8 D17 DATA6 3 E25 DATAS A27 DATA2 5 C9 DATAS 6 E18 DATAS 8 E20 DATAS2 A28 USER VI B9 GND D D18 GND D D20 DATA4 3 A29 DATAS 1 Ell DATAS 7 E19 DATA4 6 C22 5 4 A30 GND D D11 GND_D D19 GND_D B22 GNDD A31 GND_D D12 DATA4 5 C21 DATA4 7 C23 GND_D E32 DATA8 2 E12 GND D B21 GND D B23 GND C EXT CLK D13 GND D DI DATA4 8 C24 DATA6 8 A32 DATAS 3 E13 DATA3 5 A21 USER V5 B24 GND D Al GND_D D14 EXT_GATE_GEN D21 DATA3 8 A24 GND_D B32 DATA8 4 E14 GND_D E21 GND_D A25 GND_D Cl TABLE 2 2 EX1200 7500 TO EX1200 160TB PIN AND SIGNAL MA
18. 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 V TI does not however warrant that the 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 o
19. INSTRUMENT The base interface of the EX1200 7500 IVI driver VTEXDio LibDio on Linux is used to open and close connections to the instrument as well as containing pointers to all other interfaces to access the functionality of the instrument Establishing a Connection Visual Studio import IviDriverTypeLib dll no namespace import VTEXDio dll no namespace int main Windows driver creation CoInitialize NULL Start the COM layer CES TVA DLON vwc DEC The driver is given an empty options string If more than one DIO card in ncluded in the mainframe an option such as a slot number must be provided This is because the DIO driver does not support more than one card per driver instance Note that the reset flag is also set so that the unit is started clean Dio Initialize TCPIP 10 20 1 5 01NSTR VARIANT TRUE VARIANT TRUE Use the Driver Dio Close Handle any exceptions thrown return 0 Option Strings The VTEX drivers provide option strings that can be used when Initializing an instrument The option string values exist to change the behavior of the driver The following options strings are available on VTI IVI drivers e Simulate Allows the user to run a program without commanding switch card or instruments This option is useful as a debugging tool Cache Per the
20. IviDriverTypeLib dll no namespace import VTEXDio dll no namespace int main Windows driver creation the COM Layer try IVTEXDioPtr Dio uuidof VTEXDio We chose to give this driver an empty options string If you have more than one IDi O eee your chassis you will have to give it options such as a slot number This is because the DIO driver does not support more than one card per driver instance Note also that we set the reset flag so that we can get a clean start witht he unit Dio gt Initialize TCPIP 10 20 1 5 INSTR VARIANT TRUE VARIANT TRUE gt UND First we need to change the mode of the card to Pattern mode Dio gt Mode VTEXDioModePattern Now that we re in pattern mode we can change the common pattern settings including the pattern clock and also the PatternMode property We re going to set the latter to Pattern Acquisition only so that we don t have to share the Pattern Acquisition memory with Pattern Generation Dio Pattern PatternMode VTEXDioPatternModeAcquisition Dio gt Pattern gt ClockSource VTEXDioClockSourceInternal Dio gt Pattern gt InternalClockFrequency 1 0 This will coerced to the lowest frequency we support Now that we have set up the common Pattern Mode settings we can set up Pattern Acquisition As with the Normal mode settings we can change several
21. ND A23 DATA3 7 B23 GND C23 DATA4 7 D23 GND E23 DATA6 1 A24 DATA3 8 B24 USER V5 C24 DATA4 8 D24 USER V6 E24 DATA6 2 A25 GND B25 GND C25 GND D25 GND E25 DATA6 3 A26 GND B26 GND C26 GND D26 EXT_GATE_ACQ E26 DATA6 4 A27 DATAS 1 B27 GND C27 DATAS 5 D27 GND E27 GND A28 DATAS 2 B28 GND C28 DATAS 6 D28 GND E28 GND A29 DATAS 3 B29 GND C29 DATAS 7 D29 GND E29 DATA6 5 A30 DATAS 4 B30 GND C30 DATAS 8 D30 GND E30 DATA6 6 A31 GND B31 GND_C C31 GND D31 GND 1 GND A32 DATAG 8 B32 GND C32 7 032 GND E32 GND TABLE 2 1 EX1200 7500 CONNECTOR PIN SIGNAL ASSIGNMENT 16 EX1200 7500 Using the Instrument www vtlinstruments com oOo0O000000000000000000000000000000 OoOoOOoOOOOOOOOOOOOOOOOOOOOOOOOOOO OO0000000000000000000000000000000 Oo0O000000000000000000000000000000 O0000000000000000000000000000000 fo EX1200 7500 EX1200 7500 ACCO OERR Pin E32 2 2 ES 10 Orientation 1 J 000000000000000000000000000000 0O0000000000000000000000000000000 OOGOOCOOCOGOO0O00000000000006000000000 Pin A32 CONNECTOR DETAIL Pin A1
22. PPING Terminal Block Receiver The EX1200 TBR chassis is a 1U receiver capable of housing six terminal blocks The EX1200 TBR ships with rubber feet for table top installations but may be fitted with rackmount ears for installation into a test rack P N 70 0367 010 To install a terminal block into the EX1200 TBR insert the flanges on the side of the terminal block into the guide rails of the desired slot Continue to push the terminal block into the receiver until it is secured by the rear locking latch of the receiver To remove the terminal block from the EX1200 TBR hold the center thumbscrew on the terminal block then pull the terminal block from the receiver Rear locking latch Terminal Block Flange EX1200 7500 Using the Instrument 19 VTI Instruments Corp Cabling removed for clarity FIGURE 2 4 TERMINAL BLOCK INSTALLATION INTO THE EX1200 TBR BPL INSFAIL BEHAVIOR The EX1200 platform backplane has a BPL INSFAIL line that indicates to all modules that a severe failure has occurred When this line is asserted some modules put themselves into a known state such as opening all relays The EX1200 7500 does not respond to this signal 20 EX1200 7500 Using the Instrument WWNW Vvtiinstruments com EX1200 7500 Using the Instrument 21 www vtiinstruments com SECTION 3 PROGRAMMING THE INSTRUMENT INTRODUCTION This section provides programming examples for the
23. a Platform Used to Log driver function calls and to retireve the serial number of the instrument Utility IVI standard Provides useful functionality not specific to this driver such as Reset 32 EX1200 7500 Programming the Instrument www vtiinstruments com SECTION 4 SFP OPERATION INTRODUCTION EX1200s offer an embedded web page which provides network configuration control time configuration and the ability to perform firmware upgrades To facilitate discovery of the mainframe VTI provides the LAN Instrument Connection and Upgrade LInC U utility on the VTI Instruments Corp Drivers and Product Manuals CD included with the EX1200 mainframe in the EX Platforms Requisites directory To open the embedded web page start the LInC U utility by navigating to Start Programs VTI Instruments Corporation LInC U Utility LInC U Utility Once the utility is run LInC U will scan the network to discover all LAN based VTI instruments Once the scan is complete the Discovery Devices tab will appear and show the instruments that were discovered as shown in Figure 4 1 To open the web page click on the hostname hyperlink in the Discover Devices tab The IP address of the EX1200 can also be viewed from this window as well as its firmware version Ha CIT EIU Urine File Configure Help Discover Devices Firmware Drivers Hostname Version Address ex 124079 local 3 9 0 devel 10 1 4 88 amp x 63524
24. ae JJ WBLILIL 12 fe la Concise Call sarcs all tche values parc onlar Dore Here port is configured with a direction of Output a Polarity of Normal a VoltageSource of User and a voltage of 5V Emulation which has no effect since the voltage 5 7 Dio Normal Ports Item PORT3 Configure VTEXDioDirectionOutput VTEXDioPolarityNormal VTEXDioVoltageSourceUser Jo os Write to multiple ports at one time 26 EX1200 7500 Programming the Instrument WWW vtiinstruments com Dio Normal WritePorts VTEXDioDataWidth16 2 255 Writes a data of 255 on POLE 2 ands ons ri mS TTL Emulation Mode Vs Standard Mode The EX1200 7500 normally operates with open collector inputs and outputs In some cases users may desire the card to have a stronger pull up If the voltage source is set to VTEXDioTTLEmulation or VTEXDioLVEmulation a pull up resistor of 499 Q TTL or 330 Q LV is respectively enabled providing approximately 10 mA of current sourcing capability into a short at the card s outputs This allows standard high impedance digital inputs to see voltages close to Vcramr The voltage at the output will depend on the voltage divider set up by the cards pull up and the load the user places on the output See Voltage Outputs in Section 2 for more detail Async Mode Asynchronous or Asyn
25. alley 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 VTI Instruments Pvt Ltd Bangalore Instrument Division 642 80 Feet Road Koramangala IV Block Bangalore 560 034 India Phone 91 80 4040 7900 Phone 91 80 4162 0200 Fax 91 80 4170 0200 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 EX1200 7500 Preface 7 VTI Instruments Corp 8 EX1200 7500 Preface www vtiinstruments com SECTION 1 INTRODUCTION FEATURES The EX1200 7500 is a high performance I O module with eight ports of 8 bits 64 channels Each 8 bit port may be configured as an input or output under program control The I O may be either single buffered to provide real time data access or double buffered to provide synchronized data As part of the EX1200 series up to 384 channels can be accommodated in a 1U full rack mainframe or combined with other plug ins to configure a measure and control subsystem The EX1200 7500 has the flexibility to source the input and output clocks from the front panel allowing very large numbers of channels to be synchronized to collect or present data to a UUT Additionally input data can be tim
26. c mode is an additional functionality that can be used in Normal mode by calling Normal InitiateAsync In Async mode all of the properties normally available in Normal mode remain available and additional Async properties are enabled A 2 MB data FIFO is also enabled controllable by either an external trigger signal or a software trigger When an asynchronous trigger is received the device records the current state of all eight ports as well as the configurations of those ports The asynchronous trigger can be asserted at any time and the configuration returned in the data FIFO is always be consistent PATTERN MODE As described previously each port can be read or written to at any time when in Normal mode When in pattern mode the ports are clocked synchronously The card implements two independent operation modes in Pattern mode Pattern Generation Output and Pattern Acquisition Input Either or both of these modes can be enabled at the same time In pattern mode ports 1 through 4 are used as inputsoutputs while ports 5 through 8 are eutputsinputs regardless of the Pat ternMode property state If either Acquisition or Generation is enabled alone the EX1200 7500 can use 2 MB of memory for FIFO data or pattern storage If both are enabled the DIO divides the memory evenly using 1 MB for data and 1 MB for pattern storage In Pattern mode the ports are not individually controllable instead Pattern Generation controls all four o
27. ce will also go to the End State when Abort is called The End State is intended to be a safe state for the outputs The recommended method for setting up patterns to be generated is 1 Setthe MaxPatterns property This can be from 1 to 512 in powers of 2 2 Readthe MaxPatternLength propery to ensure that no pattern will exceed the limit 3 Usethe CreatePattern method to load all patterns that will be used 4 Use CurrentPattern property to set the pattern that will be output 5 Initiate the device EX1200 7500 Programming the Instrument 31 VTI Instruments Corp WARNING Do not set the MaxPatterns property after creating patterns This method will erase all previously configured patterns Gen Only Functionality e CreatePattern Stores a pattern in the unit for execution later CurrentPattern Sets the pattern that will be used when initiated This can only be modified in the IDLE state MaxPatternLength Read Only Gets the maximum number of points available for a pattern MaxPatterns The maximum number of patterns allowed to be loaded to the device The lower this number is the more memory available to individual patterns When this value is configured all current patterns are deleted Note that this is true even if the value is reset to the previous value PatternCount Read Only The number of patterns currently loaded to the device RetrievePattern Reads back the pattern specified by th
28. d 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 e 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 Data Log Once a read of the FIFO is initiated the data from FIFO becomes available in the Data Log Table at the bottom of the SFP Time Physical Channels Virtual Channels Physical Data Virtual Data FIGURE 4 7 DATA LOG TABLE EX1200 7500 SFP Operation 37 VTI Instruments Corp No Indicates the row number for reference Time Indicates the IEEE 1588 time the event occurred Port Indicates the port the data was recorded for at the given Time Data Indicates the data was recorded on the port at the given Time Polarity Indicates whether the port was set to Normal or Inverse when data was recorded Direction Indicates whether the port was use as an Input or Output when data was recorded Voltage Indicates the voltage range port s voltage range when data was recorded VoltageSource Indicates whether the an Internal or User voltage source was used when data was recorded e OverCurrent Indicates w
29. e Pattern Clock Frequency Pattern Clock Output Enable Pattern Mode Common Settings Pattern Generation and Pattern Acquisition Internal 2500000 0 C SW Trig Gen I SW Trig Both SW Trig Acq Pattern Generation Voltage TriggerSource Polarity Gate Polarity Pattern Repeat End State 00 Front Panel Normal Active High 255 Number of Patterns Current Pattern Data3 Connected 12 1 C Partition Pattern Space gt 0 vic Save Changes 2 Data Move Data Up Rad Row Pattern Acquisition Voltage Trigger Source Polarity Gate Polarity Fifo Loopback Data 00 Front Panel Normal Active High Stop cer continuous Clear Fifo Clear Table Save Data Data6 Data5 Data4 Note that the items available on this page depend on the Pattern Mode that is selected When Pattern Generation Only is selected the Pattern Generation section of the page expands to fill the whole page This is also true when Pattern Acquisition Only is selected EX1200 7500 SFP Operation 39 VTI Instruments Corp Pattern Mode Common Settings In the Pattern Mode Common Settings section the user defines characteristics that are common to both the pattern generat
30. e 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 Notes on Web Page Use If a window needs to be resized this should be done when the window opens Resizing requires a refresh which causes the current state to be lost 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 The remainder of this discussion will focus on the EX1200 7500 soft front panel For more information on other EX1200 soft front panel elements please refer to the 1200 Series User s Manual EX1200 7500 SOFT FRONT PANEL To navigate to the EX1200 7500 soft front panel click on Soft Front Panel in the Command Menu see Figure 4 3 Next select DIO ex1200 7500 from the list of cards installed in the EX1200 Viinstroments Corporation 41400 Front Panel Windows Internet Explorer 2 10 20 11 124 2 lt jve Sear LI ip Favorites Bj VTI Instruments Corporation 1200 Soft Front Panel fpc Tools All Slots Scanner uem Network Configuration m 2 Di LXI Synchronization Time Configuration ID
31. e is the state the device goes to when it is finished generating pattern or is aborted Number of Patterns Indicates the number patterns available for the user to use The number must be a value between 1 and 512 that is a power of 2 e Partition Pattern Space button When a value is entered in the Number of Patterns field the Partition Pattern Space button becomes active Clicking on this button partitions the memory to the appropriate size based on the value set for Number of Patterns For more information see Pattern Generation in Section 3 e Initiate button When this button is clicked pattern generation begins Current Pattern Indicates the number of the pattern that is being generated The pattern numbers are indicted in the pattern data table below this field Save Changes button Saves any changes made to the pattern to the FIFO Save to Disk button Saves the pattern to disk as a CSV Load from Disk button Loads a pattern from disk Must be in a CSV format Move Data Up button Moves a row of data up one row Move Data Down button Moves a row of data down one row Add Row button Clicking this button adds a row to the pattern data table After adding a row the value for Data3 through Data0 can be input e Remove Row button Clicking this button will remove the row that is selected in the patter data table EX1200 7500 SFP Operation 41 VTI Instruments Corp Pattern Acquisition Settings When pattern acqui
32. e pattern ID GetEndState Gets the currently set End State SetEndState Sets the End State Using Multiple Synchronized Instruments Multiple EX1200 7500 cards can be synchronized in Pattern or Async modes via the simple expedient of tying their clocks together Since in these modes data acquisition or generation are totally dependent on clocking the cards will automatically be synchronized when the clocks are DRIVER INTERFACES The following is a list of programmatic interfaces to the EX1200 7500 with a description of the functionality they provide Please refer to the help file installed with the driver for a programming reference that includes all methods with their parameters as well as all enumerations IVTEXDio Used to open and close connections to the instrument and set the mode the instrument is in e DriverOperation IVI standard Provides control over the manner in which the driver operates e Identity IVI standard Provides detailed version information about the driver connected hardware and firmware versions e Normal Used for Reading and Writing data to multiple ports in normal mode and configuring Async mode e Ports Used to read and write data to a single port and to configure port state such as Voltage range and polarity Pattern Used to configure global pattern settings Input Used to configure input ports and read pattern input data Output Used to configure output ports and write pattern output dat
33. e stamped to IEEE 1588 precision as part of the EX1200 scan engine Deep on board memory up to 2 MB can be used to generate patterns on output channels at rates up to 2 5 MHz In order to ease overall system cabling all clamping diodes and open collector channels are pulled up internally rather than on a per channel basis Each channel can sink 300 mA and includes built in clamping diodes making this module ideal for driving and sensing external devices such as relays EX1200 7500 Introduction 9 VTI Instruments Corp EX1200 7500 SPECIFICATIONS GENERAL SPECIFICATIONS DATA INPUT CHARACTERISTICS Vin high gt 40 of Vclamp Vin low lt 16 of Vclamp Vin 60 V DATA OUTPUT CHARACTERISTICS Vour high gt 2 V to 60 V Vour low lt 1 5 V 300 mA VOLTAGE RANGE Internal voltage source 3 3 V 5 0 V 12 0 V and 24 0 V User gt 2 V up to 60 MODES Immediate Inputs and outputs read and written via software control Asynchronous Channels are latched into memory via external clock Pattern Buffered pattern generation and acquisition controlled by internal or external clock GATE PATTERN MODE Programmable active low or high CHANNEL CONFIGURATION PATTERN MODE 32 inputs 32 outputs Memory DEPTH Output or input enabled 2 MB Output and input enabled 1 MB MAXIMUM EXTERNAL CLOCK RATE Pattern gen disabled 2 5 MHz Pattern gen enabled 2 MHz MAXIMUM PATTERN UPDAT
34. es 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 e 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 42 EX1200 7500 SFP Operation www vtlinstruments com DEVICE INFO TAB If the Device Info tab is clicked information regarding the selected instrument will be displayed including the versions of the SFP firmware and hardware Device Information Monitor and Control VTI Instruments Corportation ex1200 7500 Version Information Soft Front Panel Version 3 0 0 Firmware Version 3 0 0 devell7231 Hardware Version FPGA Version l HW Version 2 FIGURE 4 10 DEVICE INFORMATION WEB PAGE EX1200 7500 SFP Operation 43 VTI Instruments Corp 44 EX1200 7500 SFP Operation www vtiinstruments com SECTION 5 THEORY OF OPERATION INTRODUCTION This section provides an overview of how the EX1200 7500 works The figure below shows illustrates this process Internal Voltage sources 3 7 V 5 V 12 V 24 m EE voltage Input for PORTx
35. f its ports simultaneously and Pattern Acquisition does the same Polarity can still set but as noted above the direction is fixed Global Parameters e PatternMode Determines whether the pattern generation pattern acquisition or both sections are enabled When Pattern Generation is enabled the maximum InternalClockFrequency is reduced to 2 MHz This value is coerced to 2 MHz if the current value is above that threshold SendSoftwareTrigger Sends a software command to the device which triggers when the trigger source is set to Software e Clock Source Determines whether an internal or external clock source will be used e ClockOutputEnabled Determines if the internal pattern clock is output on the clock pin D13 instead of this pin being an input e InternalClockFrequency Determines the internal clock frequency The minimum frequency for the EX1200 7500 is 38 1469 Hz while the maximum is 2 5 MHz when Pattern Generation is not enabled Due to hardware constraints values above 2 MHz are not accepted if 1 the EX1200 7500 is in Pattern Generation mode or 2 if both Pattern Acquisition and Pattern Generation are enabled EX1200 7500 Programming the Instrument 27 VTI Instruments Corp Independent Parameters for Pattern Acquisition and Generation Abort This method aborts pattern acquisition and or generation e ConfigurePorts This method sets some of the most frequently changed properties i e polarity gate polarit
36. f of Vc_amp and determine output voltage thus output voltage decreases with decreasing load resistance The minimum load resistance that can be connected on channels is 500 for LV emulation 750 for TTL emulation and 150 kQ otherwise The data lines have a current sinking capacity of 300 mA If the current through MOSFET increases above limited value the over current protection circuit turns off all FETs in the concerned port The over current condition must last for greater than 12 8 before over current protection circuit is activated This is done to prevent false over current events due to transients It takes approximately 20 us from first occurrence of the over current event before the FETs are truned off The over current circuit will activate with 330 mA hold current and 475 mA trip current where hold current is the maximum current circuit will allow without tripping and trip current is the minimum current required to trip the circuit The absolute maximum limit on sinking current is 500 mA This is true when only one card in a system If multiple cards are installed then the current through channels MUST be adjusted such that total current is no more than 32 A Staying within these limits is user s responsibility Over current readings from ports will be latched and can be read by user When they reset over current condition then port will be enabled and data last written to port will be applied on channels INPUT SECTION The inp
37. f the Microsoft Corporation or its subsidiaries Linux is a registered trademark of the Linux Foundation 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 forth 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 4 EX1200 7500 7500 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 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 ATTENTION Important safety instructions Frame or chas
38. ge through front panel connector to be used as By default no voltage is selected and data lines are floating There is also an option of configuring a port s voltage setting as either TTL or Low Voltage emulation In TTL emulation setting open drain lines EX1200 7500 Theory of Operation 45 VTI Instruments Corp are pulled up to 5 V and have a sourcing capability of 4 mA whereas in Low Voltage LV option the pull up voltage is 3 3 V with 4 mA drive strength When doing read and writes data written to a port set for output updates data on that port data written to a port set for input does not have any effect Data read from a port always reads current status of data pins whether driven by card or by user Time stamp is maintained on reads When a port s direction is output data is driven by the DIO on the corresponding channels and no user voltage should be applied on those channels When direction is input data lines are pulled up to using 100 resistor and user can drive their data on the channels with a V range of zero to TTL and LV emulation voltage selection is only applicable when port s direction is output If TTL or LV emulation voltage is selected for a port and user changes the direction of that port to input the card automatically switches to 5 V or 3 3 V respectively with high impedance pull up When direction is changed back to output TTL or LV configuration is restored S
39. hether a over voltage condition was present when data was recorded 38 EX1200 7500 SFP Operation PATTERN MODE CONFIGURATION When Mode Select is set to Pattern the following settings become mode is discussed in detail in Pattern Mode in Section 3 Device Information Monitor and Control WWNW vtiinstruments com available to the user Pattern Mode Select Pattern Pattern Mode Common Settings Pattern Mode Pattern Clock Source Pattern Clock Frequency Pattern Clock Output Enable Pattern Generation and Pattern Acquisition Internal 2000000 0 C SW Trig Gen SW Trig Both SW Trig Acq Pattern Generation Voltage TriggerSource Polarity Gate Polarity 0 0 Front Panel Normal Active High Pattern Acquisition Voltage 0 0 Trigger Source Front Panel Polarity Normal Pattern Repeat End State 255 255 255 255 Number of Patterns 1 Partition Pattern Space Current Pattern 0 vic Save Changes No Data3 Data Save to Disk Move Data Up Add Row Move Data Down Connected _ Remove Row Gate Polarity Fifo Loopback Active High Stop Device information Monitor and Control Mode Select Pattern Pattern Mode Pattern Clock Sourc
40. ial Number 122764A Description EX1200 122764A LXI Class A LXI Version 7 Network Configuration Time Configuration LXI LXI Synchronization 00 00 3 01 0 1 lt IP Address 10 1426 1D LXI Identification Netmask 255 255 0 0 242 Blink LAN Indicator s Change Password Upgrade Reset Reboot FIGURE 4 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 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 34 EX1200 7500 SFP Operation 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 Each page contains a Submit button to accept newly entered changes Leaving a page befor
41. imilarly if direction is input and voltage is selected 5 V 3 3 V with high impedance pull up is applied Data in output register s of concerned port is reset set to all F s after reset and any operation that involves voltage configuration as listed below 1 When card is reset ports are affected 2 A port s direction is changed when its voltage is set for TTL LV emulation Only concerned port is affected 3 Port voltage configuration is done Only concerned port is affected Data in output registers is retained even if direction is changed So for example when an output port that is driving AA on data lines is made input all its channels are pulled up so that user data can be driven but when the direction is changed back to output gets driven given that polarity and voltage setting didn t change Polarity settings are applicable irrespective of direction On output channels changing the polarity flips the state of data lines and further writes are done according to polarity selection for example if polarity is configured as reversed then writing 1 to a channel writes a 0 to it and vice versa Read back of data whether driven by card when direction is output or driven by user when direction is input also checks for polarity and if polarity is reversed 1 is read as 0 otherwise as 1 and 0 is read as 1 otherwise as CONFIGURATION SECTION This section of circuit is used to select reference voltage
42. ion and acquisition modes Pattern Mode Common Settings Pattern Mode Paltern Generation and Pattern Acquisition v Pattern Clock Source Internal v Pattern Clock Frequency 2000000 0 Pattern Clock Output Enable 1 C SW Trig Gen XX SW Trig Both SW Trig Acq Pattern Mode Common Settings Pattern Mode Pattern Generation and Pattern Acquisition Internal Frequency 2500000 0 Pattern Clack Output Enable C SW Trig Gen DC SW Trig Both SW Trig Acq e Pattern Mode Determines whether pattern mode will only generate patterns acquire patterns or do both e Pattern Clock Source Sets the clock source for pattern generation acquisition to either External or Internal Note that if enabled Pattern Clock Output Enable will to be cleared is selected to prevent the EXT pin D13 from being used both a clock input and output e Pattern Clock Frequency When an internal clock is selected this field become available and it defines the internal clock s frequency For the Pattern Mode Tthe minimum frequency for the EX1200 7500 is 38 1469 while the maximum is 20500000 0 default Pattern Clock Output Enable When checked the EX1200 7500 will output its clock from the EXT D13 rather than using it as an external clock pin Note that if enabled Pattern Clock Source is coerced to Internal to prevent D13 from being used as both a clock input and output e SW Trig Ge
43. is first powered on it is in the default state In this state the user sets up trigger parameters patterns if generation mode is enabled and port configurations To move from this state the Pattern Input Initiate and the Pattern Output Initiate calls are used Once in the INIT state the module is waiting for a trigger If the trigger source is Immediate the EX1200 7500 immediately passes through the INIT state otherwise it waits for the trigger selected by the TriggerSource property to be asserted Once in the TRIGD state the module waits for the gate line to be asserted If the TriggerSource is SW then the TRIGD state is bypassed and the module proceeds to the SAMP state For all other trigger types the module waits for the external gate pin to be asserted before proceeding to the SAMP state There is an independent gate pin for both Pattern Input D26 and Pattern Output D12 The gate pins are pulled high by default so if they are not connected the card will move directly to the SAMP state Once in the SAMP state the pattern input will read the ports and store them to the FIFO on every rising edge of the clock and the pattern output will output a pattern from the FIFO on every rising edge of the clock When the gate signal is de asserted the module returns to the IDLE state The Abort method moves the EX1200 7500 from any state to the IDLE state Completion of the pattern output will do the same unless looback is set to VTEXDioFifoOve
44. le for the 3 3 V and 5 V voltage levels If voltages higher than those provided by the equation above are desired the user can supply a voltage with an external power supply in conjunction with a low value pull up resistor to get closer to the user s Vc 4yp voltage The 300 mA sink capability of the channel still must be observed 14 EX1200 7500 Using the Instrument www vtlinstruments com CARD USER 3 7 V 5V V LV Emulation TTL Emulation CLAMP R1 R2 R3 Vcrame R C Bleeds Voltage 330 499 100 fea Channel A Control E Rineut E 201 Detect Input Detect w Hysteresis V V Ruser Voltage Output Mode Internal Supply Pull Up Ry Open Circuit V Normal 24 V 100 15 84 V Normal 12V 100 R3 7 92 Normal 5V 100 R3 3 3 V Normal 3 3 V 100 R3 2 47 TTL Emulation 5V 499 R2 4 64 V LV Emulation 3 7 V 330 R 3 34 For TTL LV modes there is approximately 0 35 V drop due to the Schottky diode resulting in an actual internal supply voltage of 4 65 V and 3 35V respectively Mode External Supply Load Vo usER Normal Ruser Ryser V Rinpur 100402 Ryser FIGURE 2 2 VOLTAGE OUTPUT BLOCK DIAGRAM EX1200 7500 Using the Instrument 15 VTI Instruments
45. n button This button generates a software trigger for pattern generation only e SW Trig Both button This button generates a software trigger for pattern generation and patter acquisition SW Trig button This button generates a software trigger for pattern acquisition only Pattern Generation Settings When pattern generation is enabled the Pattern Generation section allows the user to configure how a pattern will be generated as well as configure the memory used for pattern generation 40 EX1200 7500 SFP Operation www vtlinstruments com Pattern Generation Voltage 3 3 TriggerSource Front Panel Polarity Normal Gate Polarity Active High Pattern Repeat N End State 255 255 255 255 Number of Patterns Partition Pattern Space Current Pattern Save to Disk Move Data Up Load from Disk Move Data Down FIGURE 4 8 PATTERN GENERATION SECTION e Voltage Select the voltage Allowable values are 0 default 3 3 and 5 0 e Trigger Source Selects the source from which the trigger will be generated Front Panel Software Trigger Backplane Line 0 through 7 are provided as options Polarity Sets the ports polarity as either Normal or Inverse e Gate Polarity Sets the gate as either Active High or Active Low e Pattern Repeat Determines whether the patter will repeat after completion or if it will move to the End State e End State The End Stat
46. onds SAFEARRAY Data NULL Note that we expect this array to be empty when it is passed to Read Dio gt Pattern gt Input gt Read 100 60000 amp Data Dio Close E Error handling here return 0 Pattern Generation Pattern generation is used to generate a sequence of bits synchronously As with pattern acquisition the device generates no output until the SAMP state is reached When the device is in the SAMP state it will output the next state of the selected pattern on the rising edge of each clock Patterns A pattern is an array of 32 bit integers stored in memory and identified by a number chosen by the user The property MaxPatterns determines how many patterns the user can store in memory The maximum length of each pattern is given by the MaxPatternLength property This value will decrease as MaxPatterns is increased The maximum value of MaxPatterns is 512 giving the user pattern IDs of through 511 Calling Pattern Output CreatePattern creates a pattern at the specified index with an array of data provided by the user End State When the device has reached the end of the pattern in memory it will either loop over the pattern again or stop output data This is configured by the VTEXDio Pattern Output LoopBack property If this parameter is set to vVTEXDioFifoStop then the EX1200 7500 will advance to the End State The devi
47. r connector pins Port Methods e Configure Configures Direction Polarity VoltageSource and VoltageRange in a single function call ResetOverCurrent Resets the LatchedOverCurrent property Configuring Ports The voltage range to 5 V Dio Normal Ports Item PORT1 VoltageRange 5 0 Cneck the over current state if Dio Normal Ports Item PORT1 LatchedOverCurrent 1 The port is in an over current state so action should be taken here Read the input int data Dio Normal Ports Item PORT1 Data Set the polarity to inverse Dio Normal Ports Item PORT1 Polarity VTEXDioPolarityInverse Read the input again data Dio Normal Ports Item PORT1 Data Set the 2 port to be an output Dio Normal Ports Item PORT2 Direction VTEXDioDirectionOutput Dio Normal Ports Item PORT2 VoltageRange 3 3 Set the highest bit Dio Normal Ports Item PORT2 Data 128 Changing the Polarity of an output changes both the output and readback polarity This means the user will always read back what they wrote but the opposite signal Valle jeuleveeycl on the nes Dio Normal Ports Item PORT2 Polarity VTEXDioPolarityInverse Dio Normal Ports Item PORT2 Data 128 Looks the same as above really outputting 127 data Dio Normal Ports Item sDate
48. rmup EE 14 Voltage Outputs ette oet i e reet od iere 14 Connector Pin S1gnal Assignment zd eee tior ee ete E eee n eet S ein AE 16 Front Panel Connector Pins Description eiie peret tee epi nere medion idees 17 EX1200 TB160SE Terminal Block sa terne nennen nth teen Hen 18 Terminal Block RECEIVER es eire rore err PP IR 19 INSFAIL Beb yi f E 20 cy ore N COINTE REEE E E TE S 23 PROGRAMMING THE INSTRUMENT otro uter EP D HER EO PMSA 23 Introduction SR A E OAE 23 Related Software Components debet EEEN E AEE ne entrent 23 Using eee pi eue eee ete 23 USING THE EX1200 7500 nnn ete tede eee hg e e eee 24 InitiahzingXClosimg the Instrument oen Dor ee ele em iiie e RE UY OVE Ee me einn 24 iiM EUER 24 4o een de baie ete 25 Normal t rtt re RERO P o TURA HERREN 25 Configuring POTES sioe e e d Rer eed ef due eed toten 25 TTL Emulation Mode Vs Standard Mode eines 27 c ERRARE ode EU ERAI E XR E PERS terne res 27 Pattern iore RHET PRA ERR DEREN p ee reo A ERE ERFURT 27 Tugpgenng Modele RU ge otim ee itecto 28 Pattern oni gre te nesses eee iei este to eiecit eec RAR cii aede tette 29 Pattern ne ene RE D
49. rwrite then pattern output will never complete and must be aborted 28 EX1200 7500 Programming the Instrument WWNW Vvtiinstruments com Initiate Command Trigger Asserted Aborted Gate Desserted Gate Asserted FIGURE 3 1 PATTERN MODE TRIGGER MODEL Pattern Acquisition When the trigger model has advanced to the SAMP state the state of all the ports will be stored to the FIFO There are four ports that will acquire data and 8 bits per port The state of all the data is stored as a single 32 bit integer with the least significant bit being bit O of port 1 and the most significant bit being bit 7 of port 4 Reading the FIFO count property of the VTEXDIO Pattern Input interface will show the number of pages in the FIFO where one page 15 the state of all four ports Port 4 Port 1 31 30 29 28 27 26 25 24 716543210 A Least Significant Bit Port 1 bit O FIGURE 3 2 DATA STRUCTURE EX1200 7500 Programming the Instrument 29 VTI Instruments Corp Reading Data e Pattern Input Read This method removes data from the FIFO Acquisition Only Functionality e FifoClear This method clears the pattern acquisition FIFO e FifoCount This property sets the number of samples in the pattern acquisition FIFO Read This method reads data from the pattern acquisition FIFO Pattern Acquisition import
50. s should include the following items An EX1200 7500 LXI Quick Start Guide EX1200 7500 User s Manual this manual EX1200 7500 IVI Linux or LabView Driver included on Distribution CD All components should be immediately inspected for damage upon receipt of the unit ESD precautions should be observed while unpacking and installing the instrument into an EX1200 series mainframe DETERMINE SYSTEM POWER REQUIREMENTS The power requirements of the EX1200 7500 is provided in the Specifications section of Section 1 It is imperative that the EX1200 mainframe provides adequate power for the modules installed For more information on EX1200 mainframe power consumption please refer Appendix B of the EX1200 Series User s Manual P N 82 0127 000 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 PLUG IN MODULE INSTALLATION Before installing a plug in module into an EX1200 system make sure that the mainframe is powered down In
51. sert 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 EX1200 7500 Using the Instrument 13 VTI Instruments Corp FIGURE 2 1 MODULE INSTALLATION EX1200 3048 USED AS EXAMPLE MAXIMIZING MEASUREMENT PERFORMANCE This section discusses tips and procedures that can help maximize the actual performance realized with the EX1200 7500 and aid the user in avoiding some common pitfalls associated with making measurements Warm up Time As the EX1200 7500 doesn t require calibration and there are no adjustments for the instrument to meet its published specifications there is no warm up required Voltage Outputs A channel output is pulled to the configured voltage through a pull up resistor The actual output that will be seen by the unit under test is defined by the standard voltage divider equation R V 2 0 ee Where Vo is the output voltage Vcramp is the user configured voltage R is the internal pull up resistor R is the external load presented by the unit under test In normal mode R is 100 In TTL emulation mode R is 350 Q so the pull up to is much stronger TTL emulation mode is availab
52. settings including Polarity and VoltageRange Unlike Normal mode if we change thes Eine Lo all porcs mot obw joie 7 The Pattern Acquisition functionality only supports 3 3V and 5V non TTL ranges and the special value O0 Dio gt Pattern gt Input gt VoltageRange 5 0 backplane line the front panel pin or software can be the trigger source Dio gt Pattern gt Input gt TriggerSource VTEXDioTriggerSourceBPL0 This setting will stop the fifo from taking more data when it is full Dio gt Pattern gt Input gt LoopBack VTEXDioFifoStop Now that we have configured the Acquisition functionality we need to enable it The Initiate function causes the card to enter the trigger model and Abort forces an exit For now we will 30 EX1200 7500 Programming the Instrument WWW vtiinstruments com ignore the Gate and Software Trigger functionalities as there are separat examples for these Dio gt Pattern gt Input gt Initiate Wait for a while Dio gt Pattern gt Input gt Abort Now W create SAF ve taken some data we need to read it back from the device First we EARRAY type to store it The Windows Microsoft programming documentation for net and COM devices explains this data type in more detail We will give the Read function arguments to get back 100 pages of data with a timeout of 60 sec
53. sis ground 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 VTI by obtaining an RMA number Fees for take back and recycling will apply if not prohibited by national law Indicates that the product was manufactured after August 13 2005 This mark is Sai WARNINGS Follow these precautions to avoid injury or damage to the product Use Proper Power Cord To avoid hazard only use the power cord specified for this product 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 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 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 damaging the instrument and or the mainframe EX1200 7500 Preface 5 VTI Instruments Corp WARNINGS CONT Avoid Electric Shock Ground the Product Operating Conditions Improper Use To avoid electric shock or fire hazard do not operate this prod
54. sition is enabled the Pattern Acquisition section allows the user to configure how and when pattern acquisition will take place Pattern Acquisition Voltage 0 0 Trigger Source Front Panel Polarity Normal Active High Stop Initiate B GET CONTINUOUS Get GET ALL GET COUNT FIFO COUNT Clear Table Clear Fifo Save Data No Data7 Data6 Data5 Data4 FIGURE 4 9 PATTER ACQUISITION SECTION e Voltage Select the voltage Allowable values 0 default 3 3 and 5 0 e Trigger Source Selects the source from which the trigger will be generated Front Panel Software Trigger Backplane Line 0 through 7 are provided as options Polarity Sets the ports polarity as either Normal or Inverse e Gate Polarity Sets the gate as either Active High or Active Low FIFO Loopback Determines whether the patter will repeat after completion or if it will move to the End State e Initiate button Clicking this button moves the DIO to the INIT state e Get Continuous checkbox If enabled this button disables the Get button and continually populates the data table as data is acquired 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 Indicat
55. t edu 45 Dou 45 Configuration Section Ae ede aa eei pea eue 46 Output Sections 46 Input SSCHON oce eget 47 TPS 49 EX1200 7500 Preface 3 VTI Instruments Corp CERTIFICATION VTI Instruments Corp VTI certifies that this 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 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
56. t the voltage range for the port Allowable values are 2 0 1 0 0 default 3 3 5 0 12 0 24 0 and User Voltage Source Note that the 2 0 and 1 0 are not voltage values but correlate to LV emulation and TTL emulation respectively Direction Sets the port as either an Input or an Output Polarity Sets the ports polarity as either Normal or Inverse Data Acquisition Section When data is received it is placed in FIFO memory and remains there until read from memory The EX1200 7500 can be configured to read the FIFO data by using the Data Acquisition Field which provides the following options GET COUNT FIFO COUNT Clear Table Clear Fifo Save Data FIGURE 4 6 DATA ACQUISITION SECTION Initiate Abort Asynchronous Mode This modifies how data is collected by placing the DIO in Asynchronous mode see Async Mode in Section 3 for more information e Software Trigger When in Asynchronous mode clicking on the button will generate a software trigger that causes the current state and configuration of all eight ports to be recorded e Get Continuous checkbox If enabled this button disables the Get button and continually populates the data table as data is acquired 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 fiel
57. uct 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 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 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 DO NOT operate if any damage to this product is suspected Product should be inspected or serviced only by qualified personnel The operator of this instrument is advised that if the equipment is used in a manner not specified in this manual the protection provided by the equipment may be impaired Conformity is checked by inspection EX1200 7500 Preface www vtlinstruments 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 V
58. ut section converts the high or low voltage reading on the data channels to 1 or 0 that can be read by the user The port S voltage is used as a reference for threshold detection If voltage on data line is greater than 4096 range spreads to 3796 to 4296 across different voltage levels of port s Vcr Aw voltage 1 is read and if voltage on data line is less than 13 10 015 range of port s Vcr voltage O is read Hysteresis loop is implemented on input comparison meaning that on rising voltage level has to cross higher threshold VIH to record a 1 and on falling voltage level has to cross lower threshold VIL to record a 0 In between VIH and VIL the digital state of data channel reading stays the same Please refer to the recommended operating conditions for input threshold values The input section also has a fly back protection diode The port s reference voltage is routed to the cathode of a fly back protection diode whose anode is then connected to the associated port s data line Every data line has a diode installed to suppress transients in case of voltage overshooting The current through diode must be limited as indicated in absolute maximum ratings EX1200 7500 Theory of Operation 47 VTI Instruments Corp 48 EX1200 7500 Theory of Operation WWNW vtiinstruments com INDEX C connector pin signal assignment eee 16 COOLING s esito nd ee
59. y and voltage range e GatePolarity This property defined the gate polarity as either being active high or active low e Initiate This method starts pattern generation and or acquisition e LoopBack This method determines whether the acquisition FIFO stops acquiring data when it is full or whether it loops back and overwrites the oldest FIFO data e Polarity This property sets the polarity of the port If the port is an input the user will see the readback inverted If the port is an output values written to the port will be inverted on writing and readback leading to the user retrieving the same value that was written The output will be the inverse of this value e Triggered This property indicates whether the device has been triggered since the last initiate command was given TriggerSource This property sets the trigger source for pattern acquisition and or generation VoltageRange This property set the voltage level that will be output if port is an output or the range the port detects on if the port is an input In Pattern Mode the only allowed values are 3 3 V 5 V and 0 V the default power on state where no inputs outputs are allowed and will return an error if initiated Triggering Model The pattern acquisition and generation modes have independent trigger models that work the same way see Figure 3 1 The EX1200 7500 does not generate or acquire patterns until it is in the SAMP state When the card
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