PA-818B (Model 7711/7712 User`s Guide)
Contents
1. KEI I HLEY Model 7711 7712 Users Guide PA 818 Rev B 8 03 A GR Rey MEAS U Rie ONFIDENCE util Safety Precautions The following safety precautions should be observed before using this product and any associated instrumentation Although some in struments and accessories would normally be used with non haz ardous voltages there are situations where hazardous conditions may be present This product is intended for use by qualified personnel who recog nize shock hazards and are familiar with the safety precautions re quired to avoid possible injury Read and follow all installation operation and maintenance information carefully before using the product Refer to the manual for complete product specifications If the product is used in a manner not specified the protection pro vided by the product may be impaired The types of product users are Responsible body is the individual or group responsible for the use and maintenance of equipment for ensuring that the equipment is operated within its specifications and operating limits and for en suring that operators are adequately trained Operators use the product for its intended function They must be trained in electrical safety procedures and proper use of the instru ment They must be protected from electric shock and contact with hazardous live circuits Maintenance personnel perform routine procedures on the product to keep it operating properly for e2. Closes channels 1 and 5 to OUT A and OUT B respectively The following command is not available ROUT MULT OPEN clist Invalid command for the Model 7711 7712 module NOTE For example if a Model 7711 7712 is installed in slot 1 and the ROUT MULT OPEN 101 com mand is sent a 221 Settings Conflict error would be reported DMM measurements None of the channels of the 7711 7712 module are connected to the internal DMM the channels cannot be connected to the backplane If your test system requires DMM measurements you can use a measure card in one of the other mainframe slots or you can use the front panel inputs of the Model 27xx Remember to use multiple channel operation to control the 7711 7712 module and system channel operation to control a measure card for DMM measurements If you attempt to close a 7711 7712 module channel using front panel system channel operation the message NO MEAS CARD will be displayed briefly If you use front panel inputs for measurements make sure that the front panel INPUT switch is in the out F position S parameters S parameters allow a text string of up to 238 ASCII characters to be stored on a module This can be used for system calibration of cable and module losses The calibration text string is stored on the module independent of the Model 27xx mainframe Unlocking calibration Use the following sequence of commands to unlock calibration factory default code CAL PROT
3. SENS FUNC RES amp Channel Str Status Call send ADDRESS SENS RES RANG 10 amp Channel Str Status Call send ADDRESS SENS RES NPLC 0 1 amp Channel Str Status Call Configure 7700 Limits Channel Num CONT MAX CONT MIN End Sub Private Sub Configure 7700 TEMP Channel Num As Integer Dim Channel Str As String Channel Str amp CStr Channel Num Call send ADDRESS SENS FUNC TEMP amp Channel Str Status Call send ADDRESS SENS TEMP TRAN TC amp Channel Str Status Call send ADDRESS SENS TEMP TC TYPE T amp Channel Str Status Call send ADDRESS SENS TEMP TC RJUN RSEL INT amp Channel Str Status Call Configure 7700 Limits Channel Num TEMP MAX TEMP MIN End Sub Private Sub Configure 7700 Channels Dim I As Integer Dim POWER SUPPLY VOLTAGE As Integer For I 0 To NUMBER OF DUTS Call Configure 7700 DCV 1 Call Configure 7700 ACV 2 Call Configure 7700 CONT 3 Call Configure 7700 TEMP 4 Next E Ba 1 I NUMBER OF DUTS I NUMBER OF DUTS Call send ADDRESS End Sub ROUT CLOS ACON ON Status k Configure Power Supplies They may run at either high line or low line A load of 10 selected in this function Assume the following for the 7705 SLOT 7700 100 I NUMBER OF DUTS SLOT 7700 100 DR SLOT 7700 100 I NUMBER OF DUTS SLOT 7700 100 Uses the 7705 switch card to change the input voltage to the power supplie
4. Weight 0 50Kg 1 1 Ib Specifications subject to change without notice HW 2 05 02 Rev A Page 2 of 2 7712 500 3 5GHz Multiplexer GENERAL Relay Type High Frequency Electromechanical Contact Configuration Dual 1x4 Multiplexer single pole four throw Channels 1 and 5 are normally closed Notes One channel in each multiplex bank is always closed to the corresponding OUT connector Close Channel ROUTe CLOSe allows a single channel in a multiplex bank to be closed ROUTe MULTiple CLOSe allows two channels One in each bank to be closed at one time Open Channel ROUTe OPEN ALL closes CH1 and CH5 to OUT A and OUT B respectively Actuation Time 10mS Firmware Specified for Model 2700 rev B04 and Model 2750 rev A03 or higher Connector Type Ten External Rear Panel SMA connectors Mating Torque 0 9 Nem 8 in Ib INPUTS CHANNELS 1 8 Maximum Signal Level Any channel to any channel or chassis 1 8 30Vrms 42V peak for AC waveforms or 42VDC 0 5A Maximum Power 20W per module 10W per channel Safety Conforms to European Union Directive 73 23 EEC EN61010 1 CAT I EMC Conforms with European Union Directive 89 336 EEC EN61326 1 Isolation Multiplexer to Multiplexer gt 1GQ Center to Shield gt 1GQ lt 20pF Channel to Channel gt 100MQ Contact Life 5x10 No Load 1x10 Rated Load Resistive load Contact Potential 12uV Contact Resistance lt 0 5Q Initial 1 End O
5. ao ja deta mos L Lp a 0000 lo EN 929 6 TA ta 7 C E KJ 26 Figure 13 Model 7712 component layout ue bi 2 D slo e o A T C cg R11 a ae ME m A erp ee A oe ib T D LD te LD YLE DI 1L e e ri fi a y 7 om Ce o e ON e IO OO 0000000 a bin m m lt w o eo x S 3 9 edre Fi F l ET 00000000 000007005 O 5 gt O UUU0000 00000000 UC i ll i Table 9 Model 771
6. 0 01 and 2 ohms L D TEMP limits are 70 and 125 C DE 9 RF switching to an oscilloscope is obtained using a 7711 where the AC ripple us is measured 4 A 7705 is used to switch loads and to control the line input voltage ke to the DUTs power supplies Please note I The maximum number of power supplies that can be used with this example is 4 18 Const MAXLEN 6400 Constant used with ENTER function Const LENGTH 6400 Constant used with ENTER function Const ENTER TIMEOUT 3000 Length of time the ENTER function will wait for a query Const ADDRESS 16 DMM setup address Slot assignments Const SLOT 7700 1 Const SLOT 7711 2 Const SLOT 7705 3 Number of configurations power supply units and functions Const NUMBER OF DUTS 4 Const NUMBER OF FUNCTIONS 4 DCV ACV CONT and TEMP Const NUMBER OF SUPPLY CONFIGURATIONS 4 Includes HIGH LOW line and 10 90 load Const N READINGS NUMBER OF DUTS NUMBER OF FUNCTIONS NUMBER OF SUPPLY CONFIGURATIONS Constants to define limits for the different measurements Const POWER SUPPLY VOLTAGE 5 Voltage output of power supplies Const DCV MAX POWER SUPPLY VOLTAGE 1 1 Allow power supply to vary by 10 Const DCV MIN POWER SUPPLY VOLTAGE 0 9 Const ACV MAX 132 ACV input voltage to power supply limits Const ACV MIN 108 Const CONT MAX 2 Limit failure will occur at 2 ohms or more Const CONT MIN 0 01 Const T
7. 6 Lane 99 Pu Ding Road Hsinchu Taiwan ROC 886 3 572 9077 0 Fax 886 3 572 9031 Copyright 2003 Keithley Instruments Inc Printed in the U S A 5 03
8. CODE KI0027xx CAL PROT CARD1 INIT CAL PROT CARD1 SPAR id CAL PROT CARDI SAVE where xx 00 for 2700 xx 01 for 2701 xx 50 for 2750 NOTE Your mainframe calibration unlock code will remain the factory default code unless it is changed 12 CALibration subsystem Commands to perform output operations are listed in Table 5 Details on these commands follow the table NOTE The following commands for the CALibration subsystem are specific to the Model 7711 7712 module It is only available if a Model 7711 7712 is installed Table 5 CALibration subsystem commands 2700 2701 Commands CALibration PROTected CARDI INITiate SPARameters lt string gt SPARameters CARD2 SPARameters 2750 Commands only CALibration CARDI INITiate SPARameters lt string gt CARD SPARameters lt NRf gt SPARameters string Path to CARDI commands Initiate command required before sending s parameters Enter up to 238 characters for storage of S parameter information about the card in slot 1 Query the ASCII information for CARDI Path to CARD2 commands Query the ASCII information for CARD2 Path to CARD commands Initiate command required before sending s parameters Enter up to 238 characters for storage of S parameter information about the card in slot 1 Path to s parameter queries Query the ASCII information for card in slot lt NRf gt If the card in this slot is no
9. HD SCREW 4 40X 1 4PFH 4 40 X 1 4 LG PHIL FLAT HD SCREW 4 40X 1 4PFH BOTTOM CARD COVER 7703 301B Model 7711 SCANNER BOARD ASSEMBLY 7711 100B Model 7712 SCANNER BOARD ASSEMBLY 7712 100A 28 7711 50 2GHz Multiplexer Specifications GENERAL Relay Type High Frequency Electromechanical Contact Configuration Dual 1x4 Multiplexer single pole four throw Channels 1 and 5 are normally closed Notes One channel in each multiplex bank is always closed to the corresponding OUT connector Close Channel ROUTe CLOSe allows a single channel in a multiplex bank to be closed ROUTe MULTiple CLOSe allows two channels One in each bank to be closed at one time Open Channel ROUTe OPEN ALL closes CH1 and CH5 to OUT A and OUT B respectively Actuation Time 10mS Firmware Specified for Model 2700 rev B04 and Model 2750 rev A03 or higher Connector Type Ten External Rear Panel SMA connectors Mating Torque 0 9 Nem 8 in Ib INPUTS CHANNELS 1 8 Maximum Signal Level Any channel to any channel or chassis 1 8 30Vrms 42V peak for AC waveforms or 60VDC 0 5A Maximum Power 20W per module 10W per channel Safety Conforms to European Union Directive 73 23 EEC EN61010 1 CAT I EMC Conforms with European Union Directive 89 336 EEC EN61326 1 Isolation Multiplexer to Multiplexer gt 1GQ Center to Shield gt 1GQ lt 25pF Channel to Channel gt 100MQ Contact Life 1x10 No Load 1x10 Rated Loa
10. MULT CLOS amp Min Channel amp amp Max Channel End Select Select Case Load Case TEN PERCENT LOAD Min Channel CStr SLOT 7705 100 1 20 Max Channel CStr SLOT 7705 100 NUMBER OF DUTS 20 Call send ADDRESS ROUT MULT CLOS amp Min Channel amp amp Max Channel Case NINETY PERCENT LOAD Min Channel CStr SLOT 7705 100 1 30 Max Channel CStr SLOT 7705 100 NUMBER OF DUTS 30 Call send ADDRESS ROUT MULT CLOS amp Min Channel amp amp Max Channel End Select Insert code here to configure and or turn on power supply outputs End Sub Measurement Functions 1 1 1 Take Measurements 1 1 20 l Closes the appropriate channels and takes a measurement using READ command Status Private Sub Take Measurements Dim I J As Integer Dim Channel Num As Integer Dim Channel Str As String Dim Reading As String For I 1 To NUMBER OF DUTS Channel Num SLOT 7711 100 I Channel Str amp CStr Channel Num amp Call send ADDRESS ROUT MULT CLOS amp Channel Str Status Loop to take measurements for all DUTs Determine channel number Convert channel to ASCII string parameter Route channel on 7711 to Out A For J 1 To NUMBER OF FUNCTIONS Loop for each measurement function Channel Num SLOT 7700 100 J 4 I 1 NUMBER OF DUTS Channel Str amp CStr Channel Num amp GEM Call send ADDRESS ROUT CLOS a
11. Upper Limit Lower Limit G amp CStr Channel Num amp Converts a number to an ASCII channel parameter CStr Ulimit CStr Llimit Call send ADDRESS CALC3 LIM1 STAT ON amp Channel Str Status Enable Limiti for DCV Call send ADDRESS CALC3 LIM1 UPP DATA amp Upper Limit amp Channel Str Status Set upper limit Call send ADDRESS CALC3 LIM1 LOW DATA amp Lower Limit amp Channel Str Status Set lower limit End Sub Private Sub Configure 7700 DCV Channel Num As Integer Power Supply DCV As Integer Dim Channel Str As String Channel Str amp CStr Channel Num amp Call send ADDRESS SENS FUNC VOLT DC amp Channel Str Status Set channel to measure DCV Call send ADDRESS SENS VOLT DC RANG 100 amp Channel Str Status Set voltage range Power Supply is at 5V Call Configure 7700 Limits Channel Num DCV MAX DCV MIN End Sub Private Sub Configure 7700 ACV Channel Num As Integer Dim Channel Str As String Channel Str amp CStr Channel Num amp Call send ADDRESS SENS FUNC VOLT AC amp Channel Str Status Set channel to measure ACV Call send ADDRESS SENS VOLT AC RANG 150 amp Channel Str Status Set voltage range Call Configure 7700 Limits Channel Num ACV MAX ACV MIN End Sub 19 Private Sub Configure 7700 CONT Channel Num As Integer Dim Channel Str As String Channel Str G amp CStr Channel Num amp Call send ADDRESS
12. digit channel assignment is included in the channel list parameter for the commands Close Open channels Multiple channel operation WARNING Multiple channel operation should only be performed by experienced test engineers who recognize the dangers associated with multiple channel closures For the Model 7711 7712 multiple channel operation provides control of one or two Model 7711 7712 modules in a Model 2700 2701 or up to 5 in a Model 2750 OUT A automatically switches as appropriate for channels 1 4 and OUT B automatically switches as appropriate for channels 5 8 for each module When you close two channels in a single module one for OUT A and one for OUT B the appropriate channels will close channels outside of the banks or on other modules are not affected by channel closures The following paragraphs summarize multiple channel operation for the front panel and from the remote interface bus Front panel For the Models 2700 2701 and 2750 the MULTI option of the CLOSE key can be used to close a channel For the Models 2700 2701 and 2750 the ALL option of the OPEN key closes channels 1 and 5 to OUT A and OUT B respectively 11 Remote interface ROUT MULT CLOS clist Closes specified channels unlisted channels not affected unless in the same bank ROUT MULT CLOS Returns list of all closed channels ROUT MULT CLOS STAT clist Query closed channels in list 1 2 closed ROUT OPEN ALL
13. 1 7712 parts list 5VD 5VR GNDD SURFACE MOUNT PCB TEST POINT CS 1026 C1 C3 C6 C19 CAP 47P 5 100V CERAMIC 0805 C 465 47P C2 C4 C5 C18 C20 C24 CAP 1UF 20 50V CERAMIC 1206 C 418 1 C7 C17 CAP 470U 20 25V ALUM ELEC C 622 470 CR1 CR2 DIODE MBR5130LT3 RF 115 J100 CONN RT ANGLE DUAL ROW RECEPT CS 1065 1 J1 J8 J10A J10B CONN RT ANGLE JACK SMA 50 OHM CS 1136 K1 K6 Model 7711 HIGH FREQ RELAY RL 238 Model 7712 RF RELAY RL 268 LLL2 FERRITE CHIP 600 OHM BLM32A07 1206 CH 62 Q1 Q6 TRANS NPN SILICON TG 389 R1 R2 R11 RES 1K 1 100MW THICK FILM 0805 R 418 1K R10 RES 10K 1 100MW THICK FILM 0805 R 418 10K R12 R17 RES 2 55K 1 1W THICK FILM R 418 2 55K R3 R8 RES 43 2 1 100MW THICK FILM 0805 R 418 43 2 R9 RES 357K 1 100MW THICK FILM 0805 R 418 357K ULU2 IC QUAD 2 IN AND 74HCTOS SOIC IC 837 IC 8 STAGE SHIFT STORE MC14094BD SOIC IC 772 IC 2 5V CASCADABLE SERIAL EEPROM LSI 212 IC 5V VOLTAGE REGULATOR LM2940CT IC 576 IC DARLINGTON ARRAY ULN2003L SOIC IC 969 IC RETRIG MULTIVIB 74HC123AM SOIC IC 788 IC HEX SCHMITT INVERT TRIGGER IC 1397 Hardware MODIFIED TOP COVER V 7711 304A Model 7711 7712 MODIFIED BOTTOM COVER V 7711 303A STANDOFF MALE FEMALE ST 166 25 BAR CODE S N LABEL MC 612A SERIAL NUMBER LABEL MC 285 4 40 PEM NUT FA 131 MODIFIED TOP COVER 7711 304A MODIFIED BOTTOM COVER 7711 303A TOP CARD COVER 7103 302C 4 40X3 16 PHIL PAN HD SEMS 4 40X3 16PPHSEM 4 40 X 1 4 LG PHIL FLAT
14. 2 and Model 7708 are used together the Model 7711 7712 must be installed in the lowest numbered slot For example Model 2700 2701 7711 7712 in slot 1 7708 in slot 2 Model 2750 7711 7112 in slot 2 7708 in slot 3 16 Table 8 Percent of additional uncertainty Percent of additional Channels closed uncertainty from Table 7 17 Application example The following application example is for power supply testing For basic overview and switching refer to Figure 8 For the tests performed refer to the provided code Figure 9 Basic knowledge for Visual Basic functions such as the CStr function as well as how forms work in Visual Basic is required to fully understand the example Figure 8 Simplified connection schematic one power supply shown Oscilloscope OUTA Ch1 a 7711 SMA BNC Cale 7712 SMA 1 Cable 7711 y gt i Power Supply ower mi w Input mu wm High Line Low Line 132V 108V Dev 10 90 Load Load 7705 7705 L Chi Ch11 7705 7705 Ch21 Ch31 Figure 9 Visual basic application example power supply testing This program tests a set of power supplies using a 2750 loaded with a 7700 tr 7711 and a 7705 The following occurs ra 1 The 7700 takes DCV ACV 2W OHMS CONT and TEMP measurements LL 2 Limits are used in each of the measurements by the 7700 L A DCV limits are set to 10 of the power supply s output L B ACV limits are 108 and 132V rs C 2W OHMS limits are
15. 712 SMA 1 7712 SMA N S46 SMA 1 S46 SMA 0 5 SMA cable male to male flexible low loss 1m 3 3ft Insertion loss lt 0 65dB 2GHz VSWR lt 1 11 2GHz Female SMA to Male N Type Adapter SMA cable male to male 0 3m 1ft SMA cable male to male 0 15m 0 5ft Card configuration schematic Figure 1 shows a simplified schematic diagram of the Model 7711 7712 module As shown the Model 7711 7712 has channels that are grouped into dual 1 x 4 multiplexers The multiplexer s design allows 1 channel of each set of 4 to be closed at a time 1 of 4 tree structure Also channels 1 and 5 are normally closed to OUT A and OUT B respectively NOTE The Model 7711 7712 relays are set to close channels I and 5 a few seconds after either a power cycle or a RST command is issued see Figure 1 for a schematic Figure 1 Simplified schematic for Model 7711 7712 Ch1 Ch2 OUTA Ch3 Ch4 Ch5 Ch6 OUT B Ch7 Ch8 NOTE To close channels 1 and 5 on a Model 7711 7712 in slot 1 send ROUT MULT CLOS 101 105 The channels are controlled over the bus or from the front panel The grounds for these channels are non isolated Detailed connection information is contained later in this guide By using the ROUT MULT commands refer to Section 2 of the Model 27xx User s Manual they can be manually configured Expansion One Model 7711 7712 configuration is a dual 2 bank 1 x 4 multiplexer A single Model 7711 7712 module ca
16. 8 Channel 2 2 EJLOTS O IO O O EL L 1 Pf fd d OUTI Bim O A EN Dl J e Oo OUT3 Ln 8 LAO A UY No OOO v LOIS l VINO al U OQ TT OUT4 Wiring procedure WARNING Do not exceed the maximum specifications for the Model 7711 7712 module Refer to Appendix A for specifications The default closed channels are 1 and 5 the lowest number in each bank At power up the lowest numbered channel in each bank will always be closed If using a saved setup that calls for another channel to be closed the card will be switched to that channel but only after the firmware has finished waking up Therefore the lowest channel will ALWAYS be closed for at least a brief time at power up The user needs to verify that nothing is connected to the lowest channel in each bank that could be damaged The connectors on the card are standard SMA type connectors When making or breaking connections use a torque wrench to produce mating torque of 0 9 Nem 8inelbs NOTE Use a box spanner torque wrench similar to Suhner Type 74 Z 1 0 21 Identification number 543130 This wrench is for SMA connectors with a 1 00 Nem torque with 6 0mm 0 315 in across the flats Figure 6 Model 7711 7712 channel connections 7111 AO 0000000 OBO Q CH8 CH7 OUTB CH6 CHS CH4 CH3 OUTA CH2 CH1 WARNING Do not touch live RF radio frequency conductors even at low voltages RF behaves differently than DC or low frequency AC
17. EMP MAX 125 Max and min limits for temperature Const TEMP MIN 70 Constants to define power supply configurations Const HIGH LINE 1 Const LOW LINE 2 Const TEN PERCENT LOAD 1 Const NINETY PERCENT LOAD 2 Global variables Dim Status As Integer Variable used by the send function Dim Readings N READINGS As String Array to store readings Dim Reading Counter As Integer Index to Readings Configure Limits Sets the limits for a given channel given by the constants defined above Configure 7700 DCV Sets a channel to measure DCV Configure 7700 ACV Configures a channel to measure ACV Corfsqure CONT Configures the channel to measure 2W ohms This measurement is used instead of CONT so we can select the ohm s limits Configure 7700 TEMP Sets a channel to measure temperature using RST default Configure Channel Uses the above functions to do the following on the 7700 1 Sets channels 1 5 9 and 13 to DCV 2 Sets channels 2 6 10 and 14 to ACV 3 Sets channels 3 7 11 and 15 to CONT 4 Sets channels 4 8 12 and 16 to TEMP 5 Places the box into Auto Configuration Mode Note Auto configuration mode brings in the individual channels settings when that channel is closed Private Sub Configure 7700 Limits Channel Num As Integer Ulimit As Integer Llimit As Integer Dim Channel Str As String Dim Upper Limit As String Dim Lower Limit As String Channel Str
18. Low voltage RF can cause severe burns RF signals spread out over body areas generating substantial currents at the points of contact with RF conductors Make all connections using correct wire size If BNC connections are required use the SMA to BNC adapter cables see Available accessories on page 2 Specifications Full Model 7711 7712 specifications are included at the end of this User Guide 10 Operation NOTE The Model 7711 7712 modules cannot be included in scanlists Detailed information to close and open switching module channels is provided in Section 2 of the Model 27xx User s Manual The following summarizes basic operation and provides operating information specific to the Model 7711 7712 Channel assignments NOTE Measurement functions cannot be assigned to Model 7711 7712 modules For example if a Model 7711 7712 is installed in slot l and the SENSE FUNC VOLT AC DIOI command is sent a 221 Settings Conflict error would be reported The Model 2700 2701 has two slots for switching modules and the Model 2750 has five slots To control the appropriate switching module the slot number must be included with the switching module channel number when you specify a channel The channel assignment is formatted as follows SCH where Sis the slot number CH is the channel number Examples 101 Slot 1 Channel 1 210 Slot 2 Channel 10 506 Slot 5 Channel 6 Model 2750 NOTE For remote operation the 3
19. ach Returns either a 1 or 0 For a 7711 7712 card a 1 is returned 14 CARD Model 2750 commands only If no card is in slot lt NRf gt then all of these commands will generate a 241 hardware missing error If the card does not support the feature or channels being queried then O will be returned Unlike the Model 2700 2702 the Model 2750 SYST CARD queries have the slot passed as a lt NRf gt following the query rather than incorporated into the command name For compatibility with existing Model 2700 2702 software the Model 2750 also accepts SYST CARDI or SYST CARD2 not recommended for queries when developing new software Example To query the maximum voltage allowed on the card in slot 3 send SYST CARD VMAX 3 Measurement considerations Termination of unused connectors To minimize noise within the system terminate unused channels with 5002 loads If 5002 loads are not available terminating unused connectors with a cable may also reduce noise within the system Power handling The graph in Figure 7 shows the maximum amount of power per channel that can be routed using the Model 7711 or Model 7712 while maintaining proper digital multimeter accuracy Power levels of up to 10 watts at frequencies 200MHz can be used but this may cause measurement errors For example routing 10 watts of power at IGHz may cause the Model 2700 2702 to have an additional 6uV offset uncertainty when measuring DC voltages For the M
20. aining channels in both banks There are six possible combinations for each bank of 4 channels combinations in bank 1 1 2 1 3 1 4 2 3 3 4 When verifying cross talk in the second bank connect the 50Q load on OUT B Figure 11 Cross talk verification Network analyzer L I Port 1 Port 2 Model 7711 7712 Chie Loud U Ci oy OUT AG WA 500 load Ch3 U CM c Cy c Choe S OUT BE ae U C g U Ch8 O Replaceable parts This section contains replacement parts information and the component layout drawing for the Model 7711 7712 Parts list Replaceable parts for the Model 7711 7712 are listed in Table 9 24 Ordering information To place an order or to obtain information concerning replacement parts contact your Keithley representative or the factory see back cover for addresses When ordering parts be sure to include the following information e Card model number Model 7711 7712 Card serial number e Part description Component designation if applicable Keithley part number Factory service If the instrument is to be returned to Keithley Instruments for repair perform the following Call the Repair Department at 1 888 KEITHLEY for a Return Material Authorization RMA number Carefully pack the instrument in the original packing carton e Write ATTENTION REPAIR DEPARTMENT and the RMA number on the shipping label Component layout The component layout for the Mod
21. d resistive load Contact Potential lt 6uV Contact Resistance lt 0 5Q Initial lt 1Q End Of Life Rise Time lt 300ps Guaranteed by design Signal Delay lt 3ns MODEL ACCESSORIES AVAILABLE 7711 SMA BNC Male SMA to Female BNC Cables Five 0 15m 0 5ft cables 7051 2 BNC cable male to male 0 6m 2ft 7051 5 BNC cable male to male 1 5m 5ft 7051 10 BNC cable male to male 3 0m 10ft 7712 SMA 1 SMA cable male to male 1 0m 3 3 ft 7712 SMA N Female SMA to Male N Type Adapter S46 SMA 1 SMA cable male to male 0 3m 1 ft S46 SMA 0 5 SMA cable male to male 0 15m 0 5 ft Refer to 7711 7712 User s Guide PA 818 for measurement considerations Typical Insertion Loss 100 Frequency MHz Typical VSWR 20dB 40dB 60dB 80dB 100dB 2000 Frequency MHz HW 2 05 02 Rev A Page 1 of 2 7711 50 2GHz Multiplexer Specifications Ch1 AC Performance Includes end of life Ch2 For Zisad Zune 500 lt 100MHz 500MHz 1GHz 1 5GHz 2GHz gail Insertion 04dB 0 6dB 1 0dB 12dB 2 0dB Loss Ch3 MAX VSWR 1 1 1 2 1 2 1 3 13 Ch4 MAX Ch Ch 85dB 65dB 55dB 45dB 35dB Ch5 Cross talk MAX Ch6 l Specification assumes 500 termination OUT B Environmental Operating Environment Specified for 0 C to 50 C Ch7 Specified for 8096 RH at 35 C Storage Environment 25 C to 65 C Ch8
22. dling on page 15 Additional measurement uncertainty on page 16 Application example on page 18 Service on page 22 Performance verification on page 22 e Replaceable parts on page 24 Model 7711 7712 User s Guide PA 818 Rev B 8 03 Introduction If you have any questions after reviewing this information please contact your local Keithley representative or call one of our Applications Engineers at 1 800 KEITHLEY U S and Canada only The Model 7711 7712 1s a single pole dual 1 x 4 RF Multiplexer module 8 channels no measurement capability The 1 x 4 multiplex is a cascading tree design one of the channels of each bank is always connected to a common out The 1 x 4 multiplex is also referred to as a single pole 4 throw SP4T switch Refer to the simplified schematic in Figure 1 or the specifications The multiplex switching can be used to connect one instrument to multiple devices 1 N or multiple instruments to a single device N 1 This card expands the Integra Series general purpose AC switching capability by providing an RF switching capability above 1MHz Each card has the following features e 10 SMA connectors with 50Q impedance Frequencies refer to specifications Model 7711 up to 2 GHz Model 7712 up to 3 5 GHz Two channels can be closed at one time one channel to OUT A channels 1 4 and one to OUT B channels 5 8 Designed specifically for use with the Integra Series including Keithley s Mode
23. dure for remaining channels Change the network analyzer connection from OUT A to OUT B when verifying channels 5 8 21 Figure 10 VSWR and insertion loss verification Network analyzer Ld Port 1 Port 2 E Model 7711 7712 he hb OUT Ag v ha T CM o hy Chips hs OUT BE v O 5 I hO a Insertion loss Connect cables as shown in Figure 10 Close channel 1 Select S12 or 521 measurement on the analyzer Display Log Magnitude plot on the network analyzer QU de uer Dur qs Verify specifications For the Model 7711 verify at 100MHz 500MHz 1GHz 1 5GHz and 2GHz For the Model 7712 verify at 5 00MHz 1GHz 2 5GHz and 3 5GHz Refer to the Insertion Loss section of the Model 7711 or 7712 specifications values for acceptable limits 6 Repeat procedure for remaining channels Change the network analyzer connection to Port 2 to OUT B when verifying channels 5 8 23 Cross talk Connect cables as shown in Figure 11 Channel 1 to port 1 and channel 2 to port 2 5002 load on OUT A Close channel 1 all other channels will open Display Log Magnitude plot on the network analyzer Select S12 measurement de e ue ra Verify specifications For the Model 7711 verify at 100MHz 500MHz 1GHz 1 5GHz and 2GHz For the Model 7712 verify at 500MHz 1GHz 2 5GHz and 3 5GHz Refer to the Ch Ch cross talk section of the Model 7711 or 7712 specifications values for acceptable limits 6 Repeat procedure for rem
24. ed service personnel Do not attempt to service the Model 7711 7712 unless you are qualified to do so Performance verification The following tests are used to verify the RF characteristics of the Model 7711 7712 card S parameters are obtained by measuring VSWR and insertion loss among the common output and channel The following equipment is recommended for the tests in this section 1 Agilent HP 8753ES Network Analyzer 6GHz with options 6 and 10 2 5002 3 5MM test port cables 1m cables 3 Agilent HP 85033D 3 5mm Calibration Kit 4 Phase matched 3 5mm female female thru adapter Instrument setup Turn on the network analyzer and the mainframe with the Model 7711 7712 installed Allow the analyzer to warm up for at least 1 hour 2 Calibrate the network analyzer from 100MHz to 3 5GHz using the appropriate calibration kit The calibration routine should include a load short open and pass through procedure Use SMA style connectors in the calibration process VSWR Connect cables as shown in Figure 10 Close channel 1 Select S11 or S22 measurement on the analyzer Display VSWR graph on network analyzer Mr io Verify specifications For the Model 7711 verify at 100MHz 500MHz 1GHz 1 5GHz and 2GHz For the Model 7712 verify at 500MHz 1GHz 2 5GHz and 3 5GHz Refer to the VSWR section of the Model 7711 or 7712 specification values at the end of this User s Guide for acceptable limits 6 Repeat proce
25. el in bank 1 with a 50Q O Ch7 Ch11 load or an unconnected S46 SMA 0 5 cable ore NOTE Channels 5 8 on the 7711 7712 To close to this crosspoint CH11 send in slot 1 correspond to crosspoints Channels 9 1 2 of the 1 x 12 SP1 2T ROUTe MULTiple CLOSe 103 I 107 MUX 4 x 4 Blocking matrix example Figure 4 shows how to connect a single Model 7711 in a 4 x 4 blocking matrix This configuration provides a convenient way to connect four DUTS to four different test instruments In this configuration one channel of bank 1 channels 1 4 may be routed to any channel of bank 2 channels 5 6 Use a short coaxial cable to connect OUT A to OUT B S46 SMA 0 5 con tains example commands Figure 4 4 x 4 blocking matrix expansion 7711 AO 66066 ON O CH8 CH7 OUTB CH6 CH5 CH4 CH3 ONTA CH2 CH1 O O S46 SMA 0 5 Cable Qty 1 7711 7712 Slot 1 To route the signal between Ch4 and Ch8 send ROUTe MULTiple CLOSe 104 108 NOTE The simplified schematic is shown in the power up state Channels 1 and 5 closed Table 2 4 x 4 Blocking matrix commands Signal path Routes signal through channels 3 and 6 Routes signal through channels 1 and 5 4 x 4 Non blocking matrix example Using a Model 2750 and four Model 7711 7712 cards a 4 x 4 non blocking matrix can be created Figure 5 shows how to connect the 7711 7712 modules This configuration provides a convenient way to simulta
26. el 7711 is provided in Figure 12 Figure 13 is the Model 7712 component layout 25 Model 7711 component layout Figure 12 DG BE BE li 8n it 210 bi 8N 118 7D 8 ses zat ca cL 222 98 l Do CI O Sy mo aie ry Um L12 C 22 c dum 2 in LEM ETE o Lo O jo A ooIr Le c E E c3 Q sooty Ses 11 FAN e E i PDL RIN 1 S elu Ss ad me E E zobo flu qe l 012 o oe PEE toot ay Se 6n O r22 MUN QQNO HAS QAG STI ojo 82 L2 y E Pa IE
27. f Life Rise Time 200ps Guaranteed by design Signal Delay lt 1 5ns MODEL ACCESSORIES AVAILABLE 7712 SMA 1 SMA cable male to male 1m 3 3 ft 7712 SMA N Female SMA to Male N Type Adapter S46 SMA 1 SMA cable male to male 0 3m 1ft S46 SMA 0 5 SMA cable male to male 0 15m 0 5 ft Refer to 7711 7712 User s Guide PA 818 for measurement considerations Typical Insertion Loss Frequency MHz Typical VSWR ELTE ES CLG tt Ht aa ee ee i el 100 Frequency MHz Typical Crosstalk FL TIN K Do a espe pii pt Pl E Frequency MHz HW 2 05 02 Rev A Page 1 of 2 Ch1 Ch2 Ch3 Ch4 Ch5 Ch6 OUT B Ch7 Ch8 Specifications subject to change without notice AC Performance Includes end of life For Zioad Z soure 500 500M Hz 1GHz Insertion Loss MAX VSWR MAX Ch Ch Crosstalk 75dB 70dB MAX Specification assumes 50Q termination 0 5dB 0 65dB 1 15 L2 ENVIRONMENTAL Operating Environment Specified for 0 C to 50 C Specified for 80 RH at 35 C Storage Environment 25 C to 65 C Weight lt 50Kg 1 1 Ib 2 4GHz 3 5GHz 1 1dB 1 3dB 1 45 1 45 50dB 45dB HW 2 05 02 Rev A Page 2 of 2 Specifications are subject to change without notice All Keithley trademarks and trade names are the property of Keithley Instruments Inc All other trademarks and trade names are the property of their respecti
28. ls 2700 2701 and 2750 Multimeter Data Acquisition Systems NOTE All references to the Model 27xx apply to the Models 2700 2701 and 2750 With this in mind the capability of the Model 27xx is expanded for applications such as the following General AC and digital signal routing to and from test equipment This includes oscilloscopes function generators pulse generators counter timers and signal analysis tools including network and jitter analyzers Also this includes diverse applications that require RF and digital routing plus DC measurements for research development burn in and production testing AC ripple and noise test for switching power supplies and DC DC converters Research development and burn in of temperature compensated oscillators Research development and production test of communications or networking products including Ethernet DSL DS3 TI E1 etc WARNING Before operating the Model 27xx with an accessory card verify that the card is properly installed and the mounting screws are tightly fastened If the mounting screws are not properly connected an electrical shock hazard may be present Available accessories Model 7711 only 7711 BNC SMA Male SMA to Female BNC five 0 15m 0 5ft cables Insertion loss lt 1dB 1GHz VSWR lt 1 5 1GHz 7051 2 BNC cable male to male 0 6m 2ft 7051 5 BNC cable male to male 1 5m 5ft 7051 10 BNC cable male to male 3 0m 10ft Model 7711 7712 7
29. mp Channel Str Status Close measurement channel on the 7700 Call send ADDRESS READ Status a Take measurement Call enter Reading MAXLEN LENGTH ADDRESS Status Readings Reading Counter Reading Store reading Reading Counter Reading Counter 1 Next Insert code here to take oscilloscope measurements Next End Sub Main Function tt Private Sub Start Click Reading Counter 0 Reset index counter Call settimeout ENTER TIMEOUT Set timeout valuefor enter function Call initialize 21 0 Initialize GPIB Call send ADDRESS RST Status Restore RST defaults Call send ADDRESS INIT CONT OFF Status Ensure INIT continuous trigger is off Call send ADDRESS FORM ELEM READ UNIT Status Display only reading and units Call Configure 7700 Channels Setup measurement channels on 7700 Call Configure Power Supplies HIGH LINE TEN PERCENT LOAD DUT input voltage is high line and 10 load Call Take Measurements Call Configure Power Supplies HIGH LINE NINETY PERCENT LOAD DUT input voltage is high line and 90 load Call Take Measurements Call Configure Power Supplies LOW LINE TEN PERCENT LOAD DUT input voltage is low line and 10 load Call Take Measurements Call Configure Power Supplies LOW LINE NINETY PERCENT LOAD DUT input voltage is low line and 90 load Call Take Measurements End Sub Service WARNING All service information is intended only for qualifi
30. n also be configured as a 4 x 4 blocking matrix The 7711 7712 can be combined with additional modules to further expand its multiplexing and matrix switching capabilities specifications may degrade when the Model 7711 7712 is used in multiple module configurations Refer to Table 1 for possible expansion information Examples of multiplexer and blocking matrix expansion follow Table 1 Table 1 Matrix and multiplex expansion Multiplexer Blocking Matrix PE IS E ee LI Lo 01 X XJ a XxX X x x Using four cards in a Model 2750 a 4 x 4 non blocking matrix can be created see the 4 x 4 non blocking matrix example on page 9 NOTE The commands in this section are formatted as follows Command Model 27xx Slot H Channel Multiplexer examples NOTE To minimize noise within the system terminate unused channels with 50Q loads If 5042 loads are not available terminating unused connectors with a cable may also reduce noise within the system Figure 2 shows how to create a 1 x 8 SP8T MUX single pole eight throw multiplex using two Model 7711 cards Channels 1 and 2 are connected to OUT A and OUT B of the second card in slot two Terminate unused channels in the example channels 3 and 4 on the Model 7712 in slot one with a 50 2 load Figure 3 shows how to create a 1 x 12 MUX using two Model 7711 cards NOTE Channels 3 and 4 of 7711 in slot 1 may also be connected to other banks that will crea
31. neously connect up to 4 DUTs to 4 different test instruments Use a short coaxial cable to connect the OUTSs of each module as shown contains a couple of sample commands to control the matrix To use select the IN connection IN 1 IN 4 and then in the same square select the OUT connection OUTI OUT4 Send the ROUTe MULTiple CLOSe command with the channels in both Ch columns Table 3 4 x 4 Sample non blocking matrix commands ROUTe MULTiple CLOSe 101 405 Routes signal from INI OUT A of slot 1 through OUT4 OUT B of slot 4 ROUTe MULTiple CLOSe 101 405 108 302 Routes signal from INI OUT A of slot 1 through OUT4 OUT B of slot 4 and also from IN2 OUT B of slot 1 through OUTI OUT A of slot 4 Table 4 4 x 4 Non blocking matrix channels IN 1 101 405 OUT4 IN 3 201 407 OUTA 102 401 OUT3 202 403 OUT3 103 305 OUT2 203 307 OUT2 104 301 OUTI 204 303 OUTI IN 2 105 406 OUT4 IN 4 205 408 OUT4 106 402 OUT3 206 404 OUT3 107 306 OUT2 207 308 OUT2 108 302 OUTI 208 304 OUTI Figure 5 4 x 4 Non blocking matrix expansion m ed E p KEITHLEY KO OOO O0 0 O amp 19 CH8 CH7 OUTB CH6 CHS CH4 CH3 OUTA CH2 CH1 NOTE The simplified schematic is shown in the power IN1 IN2 IN3 IN4 up state Channels 1 OUT A OUT B OUT A OUT B and 5 closed for cards aan A in all slots SLOT 1 SLOT 2 O O 0 0 0 0 O O O O O O O O O O O Channel 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7
32. odel 2750 the precision low level circuitry may cause uncertainty of 30u V Moving the Model 7711 7712 to a higher number slot will reduce this uncertainty Figure 7 Carry power per channel vs frequency WSS MEN HE 15 Additional measurement uncertainty Table 7 lists additional uncertainty to the published specifications for the Model 7708 Other modules such as the Model 7700 which measures thermocouple temperature are also affected by this heat but are still within published specification The amount of uncertainty is dependent on e Model 7711 7712 slot location The amount of time the channel is programmed as an output e Which other model 77XX module s are being used The listed uncertainty in Table 7 is listed for channels 4 and 8 closed The uncertainty is linear for each channel programmed as input or off there will be approximately 25 percent reduction in the listed on uncertainty Table 8 lists the percentage of additional uncertainty for specific channel pairs closed Table 7 Additional uncertainty for Model 7711 7712 J 200 to 0 C 0 to 768 C K 200 to 0 C 0 to 1372 C N 200 to 0 C 0 to 1300 C T 200 to 0 C 0 to 400 C 200 to 0 C 0 to 1000 C 0 to 400 C 0 to 1768 C 0 to 400 C 0 to 1768 C 350 to 1100 C 0 to 1820 C Notes The above listed uncertainties are guaranteed by design for thermocouple types J K N T E R S B 2 When the Model 7711 771
33. on this card MUX Return TRUE if this card support ANY mux channels SNOpen Query whether the card is of the single no open type BANKs This query returns the number of banks on the card If the card is not of the Single No Open type then a 221 Settings Conflict error results with this query 2750 Commands only CARD Path to queries slot is designated by lt NRf gt after query command SNUMber lt NRf gt Request serial number of card in Slot x SWRevision lt NRf gt Request firmware revision of card in Slot x VMAX lt NRf gt Query the highest allowed voltage on this card MUX lt NRf gt Return TRUE if this card support ANY mux channels SNOpen lt NRf gt Query whether the card is of the single no open type BANKs lt NRf gt This query returns the number of banks on the card If the card is not of the single No Open type then a 221 Settings Conflict error results with this query CARDI Model 2700 2701 commands CARD2 If no card is in slot 1 then all commands in Table 6 generate a 241 hardware missing error If the card does not support the feature or channels being queried then 0 will be returned MUX Returns either a 1 or 0 For a Model 7711 7712 card a O is returned SNOpen single no open type The card is organized into banks of channels and one channel must always be closed within that bank The Model 7711 is representative of this class with two banks of 4 channels e
34. s or 90 is also 1 Channels 1 to 4 connect each of the possible DUTS to HIGH LINE Set channel to measure 2W ohms Set resistance range Set meaurement speed to fast Set channel to TEMP measurement Select thermocouple measurement Use T thermocouples Use internal reference junction Status POWER SUPPLY VOLTAGE Place instrument in auto configure mode Open all 7705 channels Status Status Status 2 Channels 11 to 14 connect each of the possible DUTS to LOW LINE 3 Channels 21 to 24 connect each of the possible DUTS to 10 load 4 Channels 31 to 34 connect each of the possible DUTS to 90 load Eo SAA A A a ae REP ge A A NE A tc A AES RI UR ERE a A A URGES ENIRO A ND A A e EDO ONCE it A ORG DE A a A O A VEN NES Private Sub Configure Power Supplies Line As Integer Load As Integer Dim Min Channel Max Channel As String Insert code here to turn off power supply outputs Min Channel CStr SLOT 7705 100 1 Max Channel CStr SLOT 7705 100 40 Call send ADDRESS ROUT MULT OPEN amp Min Channel amp Max Channel amp Select Case Line Case HIGH LINE Min Channel CStr SLOT 7705 100 1 Max Channel CStr SLOT 7705 100 NUMBER OF DUTS Call send ADDRESS ROUT MULT CLOS amp Min Channel amp amp Max Channel Case LOW LINE Min Channel CStr SLOT 7705 100 1 10 Max Channel CStr SLOT 7705 100 NUMBER OF DUTS 10 Call send ADDRESS ROUT
35. t a valid RF card Model 7711 etc then a 221 Settings Conflict error is returned Any valid ASCII information can be stored in the string space it is not error checked in any way NOTE S parameter data can only be written to a card in slot 1 The S parameters are treated like card cal constants meaning that you must send a CAL PROT CARD1 INIT command before sending the SPARameters and they are only saved on the card after a CAL PROT CARD I SAVE command The S parameter can be read from any slot SPARameters lt NRf gt Query S parameter S parameter data can only be written to a card in slot 1 This is consistent with other Integra series type card calibrations that are allowed in slot 1 only Also the Model 2750 can be queried using CAL PROT CARDI SPAR NOTE Errors 518 and 519 are provided to flag corrupted S parameter information or flag S parameter information that was not properly initialized 13 SYSTem subsystem Commands to perform system operations are listed in Table 6 Details on these commands follow the table NOTE The following commands for the Model 7711 7712 SYSTem subsystem are included here for reference Table 6 SYSTem subsystem commands 2700 2701 Commands SYSTem CARDI Path to queries for slot 1 card CARD2 Path to queries for slot 2 card SNUMber Request serial number of card in Slot x SWRevision Request firmware revision of card in Slot x VMAX Query the highest allowed voltage
36. t the applicability of a replacement component call a Keithley Instruments office for information To clean an instrument use a damp cloth or mild water based cleaner Clean the exterior of the instrument only Do not apply cleaner directly to the instrument or allow liquids to enter or spill on the instrument Products that consist of a circuit board with no case or chassis e g data acquisition board for installation into a computer should never require cleaning if handled according to in structions If the board becomes contaminated and operation is af fected the board should be returned to the factory for proper cleaning servicing KEI I HLEY Keithley Instruments Inc 28775 Aurora Road Cleveland Ohio 44139 440 248 0400 Fax 440 248 6168 www keithley com The information in this User s Guide is organized as follows Introduction on page 2 Available accessories on page 2 Card configuration schematic on page 3 Expansion on page 4 e Multiplexer examples on page 4 e 4x4 Blocking matrix example on page 7 e 4x4 Non blocking matrix example on page 8 Wiring procedure on page 10 Operation on page 11 e Channel assignments on page 11 Close Open channels on page 11 Multiple channel operation on page 11 S parameters on page 12 Unlocking calibration on page 12 e CALibration subsystem on page 13 SYSTem subsystem on page 14 Measurement considerations on page 15 e Termination of unused connectors on page 15 Power han
37. te a I x 12 multiplexer or a 1 X 16 multiplexer See Figure 4 for a 1 x 12 example The following is a list of sample commands needed to operate the 1 x 8 multiplexer NOTE The command ROUTe MULTiple CLOSe channel list gt closes one channel per bank two banks per Model 7711 7712 module and opens all other channels within the same bank Figure 2 1 x 8 MUX expansion Re MR P AA s CH7 OUT B CH6 CH5 CH CH3 OUT A CH2 CHI 0060000600 CH7 OUT B CHG CH5 CH CH3 OUT A CH2 CH1 NOTE The simplified schematic is shown in the power up state Channels 1 and 5 are closed for cards in slots 1 and 2 Grayed channels are not used in this 1x8 SP8T MUX TEE S46 SMA 0 5 semen 7711 7712 Cable Qty 2 UM 2 Slot 1 Slot To close to this crosspoint CH7 send ROUTe MULTiple CLOSe 102 207 Figure 3 1 x 12 MUX expansion A9 9 o o o do f CH7 OUT B CH6 CH5 CH4 CH3 JOUT A CH2 CH1 00060000600 CH7 OUT B CH6 CH5 CH CH3 OUT A CH2 CH1 NOTE The simplified schematic is shown in the power up state Channels 1 and 5 are closed for cards in slots 1 and 2 cS not used in this To close to this crosspoint CH3 send m i ROUTe MULTiple CLOSe 101 203 7711 7712 Slot 1 S46 SMA 0 5 pene Cable Qty 3 7711 7712 Slot 2 To close to this crosspoint CH7 send ROUTe MULTiple CLOSe 102 207 O Ch5 Ch9 Terminate this Ch6 Ch10 unused chann
38. the user should re fer to the operating instructions located in the manual The AA symbol on an instrument shows that it can source or mea sure 1000 volts or more including the combined effect of normal and common mode voltages Use standard safety precautions to avoid personal contact with these voltages The ili svmbol indicates a connection terminal to the equipment frame The WARNING heading in a manual explains dangers that might result in personal injurv or death Alwavs read the associated infor mation very carefully before performing the indicated procedure The CAUTION heading in a manual explains hazards that could damage the instrument Such damage may invalidate the warranty Instrumentation and accessories shall not be connected to humans Before performing any maintenance disconnect the line cord and all test cables To maintain protection from electric shock and fire replacement components in mains circuits including the power transformer test leads and input jacks must be purchased from Keithley Instru ments Standard fuses with applicable national safety approvals may be used if the rating and type are the same Other components that are not safety related may be purchased from other suppliers as long as they are equivalent to the original component Note that se lected parts should be purchased only through Keithley Instruments to maintain accuracy and functionality of the product If you are unsure abou
39. under test ALWAYS remove power from the entire test system and discharge any capacitors before connecting or disconnecting cables or jump ers installing or removing switching cards or making internal changes such as installing or removing jumpers Do not touch any object that could provide a current path to the com mon side of the circuit under test or power line earth ground Always make measurements with dry hands while standing on a dry insulated surface capable of withstanding the voltage being measured The instrument and accessories must be used in accordance with its specifications and operating instructions or the safety of the equip ment may be impaired Do not exceed the maximum signal levels of the instruments and ac cessories as defined in the specifications and operating informa tion and as shown on the instrument or test fixture panels or switching card When fuses are used in a product replace with same type and rating for continued protection against fire hazard Chassis connections must only be used as shield connections for measuring circuits NOT as safety earth ground connections If you are using a test fixture keep the lid closed while power is ap plied to the device under test Safe operation requires the use of a lid interlock 5 03 If a screw is present connect it to safety earth ground using the wire recommended in the user documentation The N symbol on an instrument indicates that
40. ve companies KEI I HLEY Keithley Instruments Inc Sales Offices BELGIUM CHINA FINLAND FRANCE GERMANY GREAT BRITAIN INDIA ITALY JAPAN KOREA NETHERLANDS SWEDEN TAIWAN 28775 Aurora Road Cleveland Ohio 44139 e 440 248 0400 e Fax 440 248 6168 1 888 K EITHLEY 534 8453 e www keithley com Bergensesteenweg 709 e B 1600 Sint Pieters Leeuw 02 363 00 40 e Fax 02 363 00 64 Yuan Chen Xin Building Room 705 12 Yumin Road Dewai Madian Beijing 100029 e 8610 82251886 e Fax 8610 82251892 Halsuantie 2 00420 Helsinki Finland 9 09 53 06 65 60 Fax 09 53 06 65 65 3 all e des Garays 91127 Palaiseau C dex 01 64 53 20 20 e Fax 01 60 11 77 26 Landsberger Strasse 65 82110 Germering 089 84 93 07 40 e Fax 089 84 93 07 34 Unit 2 Commerce Park Brunel Road Theale Berkshire RG7 4AB 0118 929 75 00 e Fax 0118 929 75 19 1 5 Eagles Street Langford Town Bangalore 560 025 080 212 80 27 Fax 080 212 80 05 Viale San Gimignano 38 e 20146 Milano 7 02 48 39 16 01 Fax 02 48 30 22 74 New Pier Takeshiba North Tower 13F 11 1 Kaigan 1 chome Minato ku Tokyo 105 0022 e 81 3 5733 7555 0 Fax 81 3 5733 7556 2FL URI Building 2 14 Yangjae Dong 7 Seocho Gu Seoul 137 888 82 2 574 7778 e Fax 82 2 574 7838 Postbus 559 e 4200 AN Gorinchem 0183 63 53 33 e Fax 0183 63 08 21 c o Regus Business Centre 9 Frosundaviks All 15 4tr e 16970 Solna 9 08 50 90 46 00 Fax 08 655 26 10 13F 3 NO
41. xample setting the line voltage or replacing consumable materials Maintenance procedures are de scribed in the manual The procedures explicitly state if the operator may perform them Otherwise they should be performed only by service personnel Service personnel are trained to work on live circuits and perform safe installations and repairs of products Only properly trained ser vice personnel may perform installation and service procedures Keithley products are designed for use with electrical signals that are rated Measurement Category I and Measurement Category II as described in the International Electrotechnical Commission IEC Standard IEC 60664 Most measurement control and data I O sig nals are Measurement Category I and must not be directly connect ed to mains voltage or to voltage sources with high transient over voltages Measurement Category II connections require protection for high transient over voltages often associated with local AC mains connections Assume all measurement control and data I O connections are for connection to Category I sources unless other wise marked or described in the Manual Exercise extreme caution when a shock hazard is present Lethal voltage may be present on cable connector jacks or test fixtures The American National Standards Institute ANSI states that a shock hazard exists when voltage levels greater than 30V RMS 42 4V peak or 60VDC are present A good safety practice is to e
42. xpect that hazardous voltage is present in any unknown circuit before measuring Operators of this product must be protected from electric shock at all times The responsible body must ensure that operators are pre vented access and or insulated from every connection point In some cases connections must be exposed to potential human con tact Product operators in these circumstances must be trained to protect themselves from the risk of electric shock If the circuit is capable of operating at or above 1000 volts no conductive part of the circuit may be exposed Do not connect switching cards directly to unlimited power circuits They are intended to be used with impedance limited sources NEVER connect switching cards directly to AC mains When con necting sources to switching cards install protective devices to lim it fault current and voltage to the card Before operating an instrument make sure the line cord is connect ed to a properly grounded power receptacle Inspect the connecting cables test leads and jumpers for possible wear cracks or breaks before each use When installing equipment where access to the main power cord is restricted such as rack mounting a separate main input power dis connect device must be provided in close proximity to the equip ment and within easy reach of the operator For maximum safety do not touch the product test cables or any other instruments while power is applied to the circuit
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