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Model 27XXIntegra Series Quick Start Guide

1. Integra Series 2700 shown A Front panel input connections for 2 wire functions SENSE Q 4WIRE HI INPUT Z b c d ren DC Volts AC Volts ACV 2 Wire Ohms Q2 Thermister Temperature E o Continuity CONT FRONT REAR an Period PERIOD SENSE S n a B Front panel input connections for 4 wire functions b INPUTS FRONT REAR INPUTS 4 Wire Ohms 4 Wire RTD Temperature 04 TEMP FRONT REAR saidoj saidoj saidoj 14 Integra Series Quick Start Guide Basic measurements NOTE The following measurement procedures assume front panel input connections Input connections and measurements for the Model 7700 switching module are covered on page 35 Figure 7 shows the front panel controls used to select a measurement function and set the measurement range Each function remembers its own unique range setting The measurement range can be set manually or auto range can used When set ting range manually select a range that will accommodate the applied input If the range is too low the OVRFLW message will be displayed Select a higher range With auto range selected the Model 27xx will automatically select the best range to measure the applied input With auto range enabled the AUTO annunciator is on Figure 7 Function and range selection Measurement Function Selection DC DC 2 Wire Frequency Volts ac Amps ac Ohms y
2. Thermocouple Temperature Valid 7700 switching module channels for Amps measurements Channels 21 and 22 saidoj saidoj saidoj 38 Integra Series Figure 13 Quick Start Guide 7700 switching module connections 4 wire measurements Model 27xx H Input Channel Relay 1 Channel 25 U TO o I O O O O Backplane Isolation Relay Sense Channel Relay 11 Channel 24 T O i l U U Backplane Isolation Relay Slot I 1 DMM 1 M Input O HI i l a l K O LO il Input oi Chan 1 oi 1 Chan2 a Chans3 a Chan4 o Chan5 Sense I ho e on jd Chan 7 TO Chang a Chang OLO Chan 10 E m 1 i l l Ratio or Channel Average H m A O Channel assignments For mainframe operation the slot number for an installed switching module is used to specify a channel for system channel operation The system channel number is made of three digits XYY Example 106 L Channel Average TEMP Thermocouple where X is the slot number of the installed module YY is input channel of the module Channel 6 for module installed in slot 1 7700 paired channels for these measurements Sense Chan 11 Chan 12 Chan 13 Chan 14 Chan 15 Chan 16 Chan 17 Chan 18 Chan 19 Chan 20 saidoj saidoj saidoj Quick Start Guide Integra Series 39 Figure 14 Close open channels MATH OUTPUT RATIO DELAY HOLD LIMITS ON
3. KEITHLEY Model 27XX Integra Series Quick Start Guide A GR Pee MEAS UR Bee ONFIDENCE WARRANTY Keithley Instruments Inc warrants this product to be free from defects in material and workmanship for a period of 1 year from date of shipment Keithley Instruments Inc warrants the following items for 90 days from the date of shipment probes cables rechargeable batteries diskettes and documentation During the warranty period we will at our option either repair or replace any product that proves to be defective To exercise this warranty write or call your local Keithley representative or contact Keithley headquarters in Cleveland Ohio You will be given prompt assistance and return instructions Send the product transportation prepaid to the indicated service facility Repairs will be made and the product returned transportation prepaid Repaired or replaced products are warranted for the balance of the original warranty period or at least 90 days LIMITATION OF WARRANTY This warranty does not apply to defects resulting from product modification without Keithley s express written consent or misuse of any product or part This warranty also does not apply to fuses software non recharge able batteries damage from battery leakage or problems arising from normal wear or failure to follow instruc tions THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES EXPRESSED OR IMPLIED INCLUD ING ANY IMPLIED WARRANTY OF MERCHAN
4. Recall Use to recall stored scan readings and Statistics Scanning Step Press to start the STEP operation Config Press SHIFT and then STEP CONFIG to configure a SIMPLE scan Scan Press to start the SCAN operation Halt Press SHIFT and then SCAN HALT to exit the scan mode saidoj saidoj saidoj Quick Start Guide Integra Series 41 Simple scanning The Model 27xx can scan the channels of one or more installed switching mod ules When STEP or SCAN is pressed all input channels in the scan list are scanned measured and stored in the buffer For front panel operation options for a simple scan include the following e Scan list Scan sequence is configured by specifying the minimum first channel and the maximum last channel for the scan list e Timer When used a time interval is set by the user NOTE STEP The timer interval is invoked between each channel in the scan Example Step operation for a three channel scan list Scan Ch101 gt After timer interval expires Scan Ch102 gt After timer interval expires Scan Ch 103 SCAN The timer interval is invoked between the start of scans Example Scan operation for two scans of a three channel scan list Scan Ch1 and start timer gt Scan Ch102 gt Scan Ch 103 gt After timer interval expires Scan Ch101 gt Scan Ch102 gt Scan Ch 103 Trigger delay A trigger delay is used to provide sufficient set
5. percent reciprocal 1 X ratio and channel average Figure 9 Math operations Math Press SHIFT then DCV MATH to access math menu Percent 1 X or mX B Rel Press to enable or disable relative MATH OUTPUT RATIO CHAVG CONT OCOMP PERIOD SENSOR _ RANGE NOTE TOCA O LIMITS ON OFF TYPE N CH OFF CARD A switching module must Pren REL 4 gt be installed in order to use POWER S RANGE RATIO and CH AVG SETUP CONFIG _ HALT TEST _LSYNC GPIB RS 232 o Q OPEN CLOSE STEP scan DIGITS RATE EXIT ENTER V n l m Ratio Press SHIFT and then Ch Avg Press SHIFT and then DCI RATIO ACI CH AVG Ratio Chan A Chan B Ch Avg Chan A Chan B 2 saidoj saidoj saidoj 26 Integra Series Quick Start Guide Relative rel For all measurement functions except Continuity relative is used to null offsets or establish a baseline for future readings When Rel is enabled the displayed read ing is determined as follows Displayed Reading Actual Input Reference The reference value is established when the REL key is pressed REL annuncia tor on The reference is also called the rel value Nulling an offset With the offset reading displayed press the REL key to zero the display REL annunciator on Future readings for the input signal will not include the offset Pressing REL again will disable relative Establishing a baseline Apply the baseline le
6. 4 Wire Ohms SENS FRES REF lt n gt Specify rel value lt n gt 120e6 to 120e6 SENS FRES REF STAT lt b gt Enable or disable rel lt b gt ON or OFF SENS FRES REF ACQ Use input signal as rel value saidoj saidoj saidoj Quick Start Guide Math Integra Series 27 Temperature SENS TEMP REF lt n gt Specify rel value lt n gt 200 to 1820 C SENS TEMP REF STAT lt b gt Enable or disable rel lt b gt ON or OFF SENS TEMP REF ACQ Use input signal as rel value Frequency SENS FREQ REF lt n gt Specify rel value lt n gt 0 to 1 5e7 Hz SENS FREQ REF STAT lt b gt Enable or disable rel lt b gt ON or OFF SENS FREQ REF ACQ Use input signal as rel value Period SENS PER REF lt n gt Specify rel value lt n gt 0 to 1 sec SENS PER REF STAT lt b gt Enable or disable rel lt b gt ON or OFF SENS PER REF ACQ Use input signal as rel value Remote programming example rel SENS VOLT DC REF ACQ Uses input signal as rel value SENS VOLT DC REF STAT ON Enables rel NOTE When finished with remote programming press the LOCAL key to restore front panel control mX b This math operation manipulates the normal display reading X according to the following calculation Y mX b Where X is the normal display reading m and b are user entered constants scale factor and offset mX b operation 1 Referring to Figure 9 press SHIFT an
7. ABS or DELT TRAC POIN lt NRf gt Specify number of readings to store lt NRf gt 2 to 55000 2700 and 2701 or 2 to 110000 2750 TRAC FEED lt name gt Select readings source lt name gt SENS CALC1 or NONE SENS stores pre math readings CALC1 stores post math readings NONE disables storage in the buffer TRAC FEED CONT lt name gt Set buffer control lt name gt NEXT ALW or NEV NEXT enables the buffer ALWays places buffer in continuous filling mode overwrites after buffer full and NEVer disables the buffer TRAC DATA Read all readings in buffer Read buffer statitistics CALC2 FORM lt name gt Select buffer statistic lt name gt MIN MAX MEAN SDEV PKPK or NONE CALC2 STAT lt b gt Enable or disable statistics lt b gt ON or OFF CALC2 IMM Calculate statistics CALC2 DATA Read the selected buffer statistic saidoj saidoj saidoj Quick Start Guide Integra Series 33 Remote programming example buffer store 100 DC volt readings SYST PRES Restores factory defaults TRAC CLE Clears the buffer TRAC TST FORMABS Selects the absolute timestamp TRAC POIN 20 Sets buffer to store 20 readings Sets buffer to store raw pre math input readings Enables buffer storage process starts immediately Requests all stored readings TRAC FEED SENS TRAC FEED CONT NEXT TRAC DATA After sending TRAC DATA addressing
8. COVER ay ie KEITHLEY EmO atte COVER switching modules Integra Series 7 o4awine INPUT HI SENSE Q OGL INPUT AA IN 1 10007 PEAK oo 500V INPUT o F R UN A m FRONT REAR CATT AMPS 3A 250V FIVE eo ey ace Using the supplied line cord connect to a grounded AC power outlet The line voltage setting shown in the window of the fuse holder must match line the voltage at the AC power outlet saidoj saidoj saidoj 8 Integra Series Quick Start Guide Power up NOTE For the following power up procedure refer to Figure 2 Model 2700 Figure 3 Model 2701 or Figure 4 Model 2750 1 Check to see that the line voltage indicated in the window of the fuse holder assembly is correct for the operating voltage in your area If not refer to Section 1 of the Model 27xx User s Manual see Setting line voltage and replacing fuse CAUTION Operating the instrument on an incorrect line voltage may cause damage to the instrument possibly voiding the warranty 2 Before plugging in the power cord make sure the front panel power switch is in the off O position 3 Connect the female end of the supplied power cord to the AC receptacle on the rear panel Connect the other end of the power cord to a grounded AC outlet WARNING The power cord supplied with the mainframe contains a sepa rate ground wire for use with grounded outlets When proper connections
9. Fax 080 212 80 05 ITALY Viale San Gimignano 38 e 20146 Milano 02 48 39 16 01 Fax 02 48 30 22 74 JAPAN New Pier Takeshiba North Tower 13F 11 1 Kaigan 1 chome Minato ku Tokyo 105 0022 e 81 3 5733 7555 Fax 81 3 5733 7556 KOREA 2FL URI Building 2 14 Yangjae Dong Seocho Gu Seoul 137 888 82 2 574 7778 Fax 82 2 574 7838 NETHERLANDS Postbus 559 4200 AN Gorinchem 0183 63 53 33 Fax 0183 63 08 21 SWEDEN c o Regus Business Centre Frosundaviks All 15 4tr e 16970 Solna 08 50 90 46 00 Fax 08 655 26 10 TAIWAN 13F 3 NO 6 Lane 99 Pu Ding Road Hsinchu Taiwan ROC 886 3 572 9077 Fax 886 3 572 9031 5 03 Model 27XX Integra Series Quick Start Guide 2003 Keithley Instruments Inc All rights reserved Cleveland Ohio U S A First Printing May 2003 Document Number 27XX 903 01 Rev A Manual Print History The print history shown below lists the printing dates of all Revisions and Addenda created for this manual The Revision Level letter increases alphabetically as the manual undergoes sub sequent updates Addenda which are released between Revisions contain important change in formation that the user should incorporate immediately into the manual Addenda are numbered sequentially When a new Revision is created all Addenda associated with the previous Revi sion of the manual are incorporated into the new Revision of the manual Each new Revision includes a revised copy of this print h
10. Filter Press to enable or disable Type Press SHIFT then FILTER TYPE to access filter configuration menu Window 10 1 0 1 0 01 or none Count 1 to 100 Type Moving or Repeat DELAY HOLD LIMITS ON OFF TYPE MONITOR CH OFF CARD EX TRIG TRIG STOREJRECALL FILTER REL SAVE SETUP CONFIG HALT TEST LSYNC GPIB RS 232 OPEN CLOSE STEP SCAN DIGITS RATE EXIT ENTER Digits Press to set Rate Press to set measurement display resolution speed SLO MED or FAST Lsync Press SHIFT then RATE LSYNC to access the line synchronization on off menu Warm up The instrument can be used as soon as it is turned on However to achieve rated accuracy it must be allowed to warm up for at least two hours to allow internal temperatures to stabilize If the instrument has been exposed to extreme tempera tures allow extra warm up time Display resolution digits As shown in Figure 8 use the DIGITS key to set the display resolution 3H to 6H digits for all functions except Continuity which is fixed Press the DIGITS key until the desired resolution is displayed For front panel operation the selected display resolution is the same for all functions saidoj saidoj saidoj Quick Start Guide Integra Series 21 SCPI programming commands digits For remote programming each valid function can have it s own unique setting SENS VOLT DC DIG lt n gt Set display resol
11. OFF TYPE MONITOR CH OFF CARD EX TRIG TRIG STORE RECALL FILTER REL SAVE SETUP CONFIG HALT TEST LSYNC GPIB RS 232 OPEN CLOSE STEP J SCAN DIGITS RATE EXIT ENTER Card Press SHIFT and then b gt CARD to VIEW closed channels Input channel control cursor keys lt Press to close previous channel p gt Press to close next channel Open Use to open ALL channels Close Use to close an input SINGLE channel Closing and opening channels Channels can be controlled using the CLOSE and OPEN keys or the cursor keys s and keys The keys to close and open channels are shown in Figure 14 CLOSE and OPEN keys Closing channels 1 Press the CLOSE key and use the edit keys to select the SINGLE menu option 2 Use the edit keys see Figure 5 to key in the channel number 3 With the desired channel displayed press ENTER to close the input channel Only the specified input channel and the channels required to connect the input s to the DMM will close All other channels will be open Opening all channels Press the OPEN key and with the ALL menu option displayed press ENTER All switching module channels will open Cursor keys and gt The cursor keys shown in Figure 14 allow you to close and open channels in an ascending sequence or a descending sequence With all channels open pressing the key closes the first input channel and all other channels required to connect
12. Press SHIFT and then EXIT ETHERNET to access menu Use the edit keys to enable the Ethernet ON set DHCP ON or OFF and set the address ADDR SUBNET and GATEWAY to Ethernet port of a computer or to a For RS 232 communication connect to serial port of computer hub or receptacle of an Ethernet system using a straight through RS 232 cable DB 9 Do not use a null see Note below modem cable WARNING no INTERNAL O R SERVICABLE PARTS SERVICE BY QUALIFIE NNEL ONLY 100bT KEITHLEY o A O Be DIGITAL 1 0 TRIGGER ETHERNET RS 232 EXT TRIG LINK 10 100 BaseT For Ethernet communication connect m 10bT CE 250mAT 125mAT KEITHLEY SLOT COVER CAUTION For CONTINUED PROTECTION AGAINST FIRE HAZARD REPLACE FUSE WITH SAME TYPE AND RATING Using the supplied line cord connect to a grounded AC power outlet The line voltage setting shown in the window of the fuse holder must window shows match line the voltage at the AC power outlet line voltage Note Ethernet communication If connecting the 2701 directly to a computer use an Ethernet setting cross over cable RJ 45 male male If connecting to an Ethernet system hub or receptacle use a standard Ethernet cable RJ 45 male male Two slots for Keithley switching modules saidoj saidoj saidoj Quick Start Guide Figure 4 Model 2750 front and rear panels SLOT 1 SLOT 2 SLOT 3 SLOT 4 BOS KEITHLEY MODEL 2750 MULTIMETER SWITCH SYST
13. S R E or T d Select the reference junction JUNC e Select SIM if using a simulated reference junction e g ice bath You will then be prompted to enter the temperature of the simulated junction For example if using an ice bath set the simulated temper ature to 0 C or 32 F or 273K e Select INT if the thermocouple is connected to a Keithley switching module that has a cold junction such as the Model 7700 e Enable Y or disable open thermocouple detection OPEN DET When enabled an open thermocouple will display the OVRFLW message 4 Reading Take a reading from the display NOTE Thermocouples cannot be directly connected to the front panel inputs In order to use front panel inputs for thermocouple temperature mea surements a simulated reference junction such as an ice bath must be used see Section 3 of the Model 27xx User s Manual for details Thermocouples can be directly connected to a Keithley switching module that has a cold junction for thermocouples such as the Keithley 7707 switching module Details on the Model 7700 switch ing module are provided on page 34 SCPI programming commands temperature NOTE Not all temperature commands are documented here For details on all temperature commands refer to the Model 27xx User s Manual see Section 3 SENS FUNC TEMP Select Frequency function SENS UNIT TEMP lt name gt Set temperature units lt name gt C F or K Therm
14. are made instrument chassis is connected to power line ground through the ground wire in the power cord Failure to use a grounded outlet may result in personal injury or death due to electric shock 4 Turn on the instrument by pressing the front panel power switch to the on I position After going through its power up sequence the instrument begins its normal display of readings Edit keys Edit keys are used to navigate through a menu structure to make selections and enter values The keys shown in Figure 5 automatically become edit keys when in a menu structure To see an example of a menu structure press the STORE key In this menu structure you set the number of readings to store and enable the buffer The sand keys control cursor position The cursor is identified as a blinking digit or blink ing menu item With the cursor positioned where desired use the and f keys to select altemate menu items or change the value The ENTER or EXIT key is then used The ENTER key accepts the displayed selection while the EXIT key exits the menu structure without making any changes When in the STORE menu structure use the 8 and f keys to specify the number of readings e g 100 to store in the buffer Then press ENTER to enable the buffer The asterisk annunciator is on while readings are being stored saidoj saidoj saidoj Quick Start Guide Integra Series 9 Figure 5 Edit keys DELAY HOLD LIMITS ON OFF TYPE M
15. command scans 10 channels 101 through 110 TRAC CLE Clears buffer INIT CONT OFF Disables continuous initiation TRIG SOUR IMM Selects the immediate trigger control source TRIG COUN 1 Sets to perform one scan SAMP COUN 10 Sets to scan 10 channels ROUT SCAN 101 110 Defines scan list ROUT SCAN TSO IMM Start scan when enabled and triggered ROUT SCAN LSEL INT Enables scan READ Triggers scan and requests the readings ROUT SCAN LSEL NONE Disables scan NOTE When finished with remote programming press the LOCAL key to restore front panel control 44 Integra Series Quick Start Guide 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 respective companies KEITHLEY 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 440 248 0400 Fax 440 248 6168 1 888 KEITHLEY 534 8453 www keithley com Bergensesteenweg 709 B 1600 Sint Pieters Leeuw 02 363 00 40 Fax 02 363 00 64 Yuan Chen Xin Building Room 705 12 Yumin Road Dewai Madian Beijing 100029 8610 82251886 Fax 8610 82251892 Halsuantie 2 00420 Helsinki Finland 09 53 06 65 60 Fax 09 53
16. computer and the Integra mainframe e Models 2700 and 2750 GPIB IEEE 488 interface or RS 232 e Model 2701 Ethernet or RS 232 saidoj saidoj saidoj 10 Integra Series Quick Start Guide Communication connections Use the information in Figure 2 2700 Figure 3 2701 or Figure 4 2750 to con nect the desired communications port of the instrument WARNING Before making or breaking connections turn off the instru ment disconnect the line cord and disconnect any external cir cuitry connected to the mainframe or switching modules Communication configuration Factory communication settings Models 2700 and 2750 These Integra instruments are shipped from the factory with the GPIB communications selected and set to primary address 16 Model 2701 This Integra instrument is shipped from the factory with the Ether net interface selected and with the following settings IP Address 192 168 000 002 Subnet Mask 255 255 255 000 Gateway 192 168 000 001 The interface settings for your computer must be compatible with the interface set tings for the Model 27xx You can change the interface settings for your computer or you can change the interface settings of the Model 27xx Checking and or changing Integra communications settings Use the Communications configuration information in Figure 1 2700 Figure 2 2701 or Figure 3 2750 to check and or change communications settings While in the menu
17. it to safety earth ground using the wire recommended in the user documentation The A N symbol on an instrument indicates that the user should refer to the operating instructions located in the manual The AA symbol on an instrument shows that it can source or measure 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 A symbol indicates a connection terminal to the equipment frame The WARNING heading in a manual explains dangers that might result in personal injury or death Always read the associated information 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 war ranty 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 Instruments Standard fuses with applicable national safety ap provals 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 selected parts should be purchased only
18. operation should be restricted to experienced test engineers who recognize the dangers associated with mul tiple channel closures For details on operation refer to Section 2 Multiple channel operation of the Model 27xx User s Manual saidoj saidoj saidoj Quick Start Guide Integra Series 35 Input connections and measurements WARNING The following summary on Model 7700 input connections is for informational use only It is only intended to show how a an input signal is connected and routed through the switching module to the mainframe DMM Module connections and installation into the mainframe are only to be performed by qualified service personnel For details on these procedures refer to the User s Guide that is supplied with the switching module CAUTION To prevent damage to the switching module do not exceed the maximum signal levels listed in Table 2 Table 2 Maximum inputs for Model 7700 Channel Maximum signal level Channels 1 20 300V DC or rms 1A switched 60W 125VA maximum Channels 21 and 22 60V DC or rms 3A switched 60W 125V maximum The Model 7700 has 20 input channels 1 through 20 for volts ohms frequency period and temperature measurements It also has 2 channels for amps mea surements channels 21 and 22 The Model 7700 switching module uses screw terminal blocks for test connections to input circuits The screw terminals are accessed by removing the top cover of the module see Figu
19. structure for a communication interface use the edit keys See Figure 5 to check or change settings NOTE If you select the alternate interface type e g enabling ON the RS 232 while the GPIB is presently selected the instrument will reboot You will have to re enter the menu structure to check change the other settings saidoj saidoj saidoj Quick Start Guide Integra Series 11 Start up software Models 2700 2701 and 2750 You can use the Up amp Running with TestPoint software Supplied on CD to perform the following e Control and configure the Integra instrument e Scan acquire and graph the data e Store data on disk for analysis e Save and recall instrument scan configurations Model 2701 A built in web page is available to allow for easy Ethernet communi cation between the instrument and the computer From this web page you can read and set network parameters and other data stored in the Model 2701 It also takes readings and allows you to send command strings and receive data Using Internet Explorer IE 5 0 or greater a local intranet address is used to open the web page The web page address is the same as the IP Address of the Model 2701 Assuming the default IP Address is being used the following intranet address will open the web page http 192 168 0 2 NOTE Details on using the Ethernet web page with the Model 2701 is pro vided in Section 10 see Internal web page of the Mode
20. the maximum allowable input voltage for the system including the mainframe is degraded to the maximum voltage rating of the card The maximum signal levels for the Model 7700 switching module are listed in Table 2 on page 35 Figure 1 Integra measurement capabilities Measurement Ranges 1n 1u 1m 1 1k 1M 1G DC Voltage i 00nV 1000V AC Voltage 100nV fae 750V DC Current 10nA 3A AC Current THA 3A Frequency 3Hz 500kHz Period 2us 333ms Resistance 2 Wire 100 mm i 120M22 Resistance 4 Wire 140 120MO Logarithmic scale 500 0 500 1000 1500 2000 Temperature RTD 200 C 630 C Temperature TC 200 C 1820 C Temperature Thermistor 80 C 150 C Linear scale EE Model 2750 only Model 7700 switching module capabilities The Model 7700 has 20 input channels 1 through 20 for all Integra measure ments except amps For 2 wire measurements any of these 20 2 pole input channels can be connected via relay switches to the DMM of the mainframe For 4 wire measurements e g 24 the channels are paired Input channels 1 through 10 are paired to sense channels 11 through 20 When an input channel e g 1 is closed the paired sense channel e g 11 also closes to connect the 4 wire input to the input and sense terminals of the DMM For amps measurements two dedicated channels 22 and 23 are provided to measure current For temperature measurements the switchi
21. the unit to talk returns the 20 stored readings CALC2 FORMMEAN CALC2 STAT ON CALC2 IMM CALC2 DATA After sending CALC2 DATA addressing the unit to talk returns the statistic reading Selects the average mean statistic Enables the statistic Calculates the average mean of the stored readings Read the average mean statistic NOTE When finished with remote programming press the LOCAL key to restore front panel control Figure 10 Buffer EX TRIG TRIG SAVE SETUP OPEN CLOSE STORE Press to configure buffer CONFIG _ HALT STEP SCAN DIGITS RATE TYPE MONITOR CH OFF _ CARD GPIB RS 232 EXIT ENTER TEST _LSYNC RECALL Press to recall readings and statistics Data Recall Mode LUD Buffer Pointer Reading or Statistic Timestamp TS RDG NO 5 Reading Absolute TS Delta TS RDG NO 4 Reading Absolute TS Delta TS RDG NO 3 Reading Absolute TS Delta TS RDG NO 2 Reading Absolute TS Delta TS RANGE RDGNO 1 Reading Absolute TS Delta TS STDDEV Standard Deviation No Timestamp AVERAGE Mean No Timestamp PEAK TO PEAK Peak to Peak No Timestamp MIN AT Rdg Minimum Absolute TS Delta TS MAX AT Rdg Maximum Absolute TS Delta TS gt saidoj saidoj saidoj 34 Integra Series Quick Start Guide Model 7700 switching module NOTE It is not necessary to connect input signals in order to exercise oper ation of the Model 7700 switching m
22. through Keithley Instruments to maintain accuracy and functionality of the product If you are unsure about 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 accord ing to instructions If the board becomes contaminated and operation is affected the board should be returned to the factory for proper cleaning servicing Quick Start Guide Integra Series 2 Integra Series Topics Getting started page 3 Introduction page 3 Measure and switching capabilities page 3 Front and rear panels mainframe page 5 Power up page 8 Edit keys page 8 Factory defaults page 9 Communication interfaces page 9 Start up software page 11 Trigger and return readings page 11 Front panel input connections page 12 Basic measurements page 14 Measure volts amps and ohms page 14 Measure temperature page 16 Measure frequency and period page 18 Testing continuity page 19 Optimizing performance page 20 Warm up page 20 Display resolution digits page 20 Measur
23. 06 65 65 3 all e des Garays 91127 Palaiseau C dex 01 64 53 20 20 Fax 01 60 11 77 26 Landsberger Strasse 65 82110 Germering 089 84 93 07 40 Fax 089 84 93 07 34 Unit 2 Commerce Park Brunel Road Theale Berkshire RG7 4AB 0118 929 75 00 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 20146 Milano 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 81 3 5733 7555 Fax 81 3 5733 7556 2FL URI Building 2 14 Yangjae Dong Seocho Gu Seoul 137 888 82 2 574 7778 Fax 82 2 574 7838 Postbus 559 4200 AN Gorinchem 0183 63 53 33 Fax 0183 63 08 21 c o Regus Business Centre Frosundaviks All 15 4tr 16970 Solna 08 50 90 46 00 Fax 08 655 26 10 13F 3 NO 6 Lane 99 Pu Ding Road Hsinchu Taiwan ROC 886 3 572 9077 Fax 886 3 572 9031 Copyright 2003 Keithley Instruments Inc Printed in the U S A 5 03
24. Assume the normal display reading is 2 5Q The reciprocal of resis tance is conductance When 1 X is enabled the following conductance reading will be displayed 0 4R Reciprocal 1 X operation 1 Referring to Figure 9 press SHIFT and then DCV MATH to access the Math menu 2 Using the edit keys see Figure 5 select the 1 X menu item The displayed readings will be the result of the 1 X calculation in R units To dis able the 1 X math operation press SHIFT and DCV MATH saidoj saidoj saidoj Quick Start Guide Integra Series 29 SCPI programming commands math CALC1 FORM lt name gt Select calculation lt name gt MXB PERC REC or NONE CALC1 STAT lt b gt Enable or disable math lt b gt ON or OFF CALC1 DATA Read result of selected calculation mX b CALC1 KMAT MMF lt NRf gt Set m factor lt NRf gt 100e6 to 100e6 CALC1 KMAT MBF lt NRf gt Set b factor lt NRf gt 100e6 to 100e6 CALC1 KMAT MUN lt char gt Set units lt char gt A through Z a through z T W symbol or symbol Percent CALC1 KMAT PER lt NRf gt Set reference lt NRf gt 4294967295 to 4294967295 CALC1 KMAT PER ACQ Use input signal as reference Remote programming example percent acquire reference Apply the signal that you wish to use as the reference for the Percent calculation and continue as follows INIT CONT OFF Di
25. EM INTEGRA SERIES MATH OUTPUT RATIO CHAVG CONT OCOMP PERIOD SENSOR on O RANGE DELAY CLA Gd ON OFF CLA MONITOR CH OFF CARD LOCAL EX TRIG ExTaaj TRIG STORE RECALL RECALL FILTER REL REL CHD e RANGE POWER SAVE SETUP Era HALT din LSYNC er RS 232 Q Q OPEN OPEN CLOSE STEP scan SCAN Dicis RATE RATE exit ENTER ENTER MATH OUTPUT RATIO CHAVG CONT OCOMP PERIOD SENSOR DELAY DRYCKT LIMITS ON OFF TYPE MONITOR CH OFF CARD EX TRIG TRIG STORE RECALL FILTER REL GL Sas SAVE SETUP CONFIG _ HALT TEST _LSYNC GPIB _RS 232 OPEN CLOSE STEP SCAN DIGITS RATE EXIT ENTER Communications configuration dok ie hee 2 A by RS 232 Press SHIFT and then ENTER p 9 P l RS 232 to access menu Use the edit turn off release the switch to the off keys to enable ON RS 232 and set the O position terminator TX TERM FLOW control and BAUD rate GPIB Press SHIFT and then EXIT GPIB to access menu Use the edit keys to enable ON the GPIB and set the address ADDR For RS 232 communication connect to serial port of computer using a For GPIB communication connect straight through RS 232 cable DB 9 to GPIB port of computer using an Do not use a null modem cable IEEE 488 cable Keithley 7007 P Window shows commo came ino valage so DIGITAL 1 0 TRIG LINK RS 232 IEEE 488 A ome ce KEITHLEY as SLOT COVER am JA kme O LEY d I E G
26. Frequency Press the FREQ key e Period Press the SHIFT key then press FREQ PERIOD 3 Select a measure range that will accommodate the expected AC input level 4 Reading Take a reading from the display SCPI programming commands frequency and period Frequency SENS FUNC FREQ Select Frequency function SENS FREQ THR lt NRf gt Specify expected input level in volts lt NRf gt 0 to 1010 Period SENS FUNC PER Select Period function SENS PER THR lt NRf gt Specify expected input level in volts lt NRf gt 0 to 1010 Remote programming example frequency INIT CONT OFF Disables continuous initiation TRIG COUN 1 Sets trigger count to one SENS FUNC FREQ Selects Frequency function SENS FREQ THR 10 Selects 10V threshold range for expected input READ Triggers measurement and requests one reading NOTE When finished with remote programming press the LOCAL key to restore front panel control saidoj saidoj saidoj Quick Start Guide Integra Series 19 Testing continuity The Model 27xx can test continuity using the 1kQ range Threshold can be set from 1 to 10000 When the measured test circuit is below the set threshold level the instrument will beep and display the resistance reading When the measured level is above the threshold level the message OPEN will be displayed 1 Connections Connect the test circuit as shown in Figu
27. ONITOR CH OFF CARD EX TRIG TRIG STORE RECALL FILTER REL SAVE SETUP CONFIG _ HALT TEST _LSYNC LEPIB RS 232 OPEN CLOSE step scan oiciTs RATE EXIT ENTER Edit keys when in a menu Use to control cursor position gt Use to make selections or change values X Use to cancel selection and or exit menu EXIT Use to accept selection ENTER Factory defaults The operating instructions and examples in this guide assume that the instrument has powered up to its factory default settings continuous measurement mode DCV function auto range enabled 6H digit resolution filter enabled etc If it did not return to factory defaults or you are not sure perform the following steps 1 Press the SHIFT key and then the CLOSE SETUP key to access the setup menu 2 With RESTORE FACT displayed press the ENTER key Factory defaults will be restored and the instrument will continuously measure and display readings Remote programming Send the following command to restore factory defaults SYST PRES Communication interfaces Reference Detailed information on the GPIB IEEE 488 interface and RS 232 interfaces are provided in the Model 2700 and 2750 Users Manual Detailed information on the Ethernet interface is provided in the Model 2701 Users Manual and the Model 2701 Instrument Networking Instruction Manual For remote programming the following interfaces can be used for communications between the
28. TABILITY OR FITNESS FOR A PARTICULAR USE THE REMEDIES PROVIDED HEREIN ARE BUYER S SOLE AND EXCLUSIVE REMEDIES NEITHER KEITHLEY INSTRUMENTS INC NOR ANY OF ITS EMPLOYEES SHALL BE LIABLE FOR ANY DIRECT INDIRECT SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OF ITS INSTRUMENTS AND SOFTWARE EVEN IF KEITHLEY INSTRUMENTS INC HAS BEEN ADVISED IN ADVANCE OF THE POSSIBILITY OF SUCH DAMAGES SUCH EXCLUDED DAM AGES SHALL INCLUDE BUT ARE NOT LIMITED TO COSTS OF REMOVAL AND INSTALLATION LOSSES SUSTAINED AS THE RESULT OF INJURY TO ANY PERSON OR DAMAGE TO PROPERTY KEITHLEY Keithley Instruments Inc 28775 Aurora Road Cleveland Ohio 44139 440 248 0400 Fax 440 248 6168 1 888 KEITHLEY 534 8453 www keithley com Sales Offices BELGIUM Bergensesteenweg 709 B 1600 Sint Pieters Leeuw 02 363 00 40 Fax 02 363 00 64 CHINA Yuan Chen Xin Building Room 705 12 Yumin Road Dewai Madian Beijing 100029 8610 82251886 Fax 8610 82251892 FINLAND Halsuantie 2 00420 Helsinki Finland 09 53 06 65 60 Fax 09 53 06 65 65 FRANCE 3 all e des Garays 91127 Palaiseau C dex 01 64 53 20 20 Fax 01 60 11 77 26 GERMANY Landsberger Strasse 65 82110 Germering 089 84 93 07 40 Fax 089 84 93 07 34 GREAT BRITAIN Unit 2 Commerce Park Brunel Road Theale Berkshire RG7 4AB 0118 929 75 00 Fax 0118 929 75 19 INDIA 1 5 Eagles Street e Langford Town Bangalore 560 025 080 212 80 27
29. UT SCAN LSEL lt name gt Enable or disable scan lt name gt INT on or NONE off TRIG SOUR lt name gt Select control source lt name gt IMM TIM MAN BUS or EXT see Note 3 TRIG TIM lt n gt Set timer interval in seconds lt n gt 0 001 to 999999 999 TRIG COUN lt NRf gt Specify number of scans lt NRf gt 1 to 9999 or INFinite SAMP COUN lt NRf gt Specify the number of channels to scan Should match the number of channels in the scan list lt NRf gt 1 to max see Note 4 saidoj saidoj saidoj Quick Start Guide Integra Series 43 NOTES 1 lt clist gt examples 101 slot 1 channel 1 101 204 slot 1 channel 1 and slot 2 channel 4 101 110 slot 1 channels 1 through 10 2 IMM starts the scan immediately when triggered Reading limits can instead be used to trigger the start of a scan The parameters for reading limits HLIM1 LLIM1 HLIM2 and LLIM2 are not explained in this guide See Section 7 Monitor scan of the Model 27xx User s Manual for information 3 With the IMM control source selected the trigger is detected immediately Use TIM for a timer controlled scan Use the TRIG TIM command to set the timer interval The other control sources MAN BUS and EXT are covered in Section 8 of the Model 27xx User s Manual 4 Maximum sample count Max 55000 2700 and 2701 110000 2750 Remote programming example simple scan The following
30. able or disable line synchronization lt b gt ON or OFF Remote programming example isync SYST LSYN STAT ON Enable line synchronization NOTE When finished with remote programming press the LOCAL key to restore front panel control saidoj saidoj saidoj Quick Start Guide Integra Series 25 Autozero To help maintain stability and accuracy over time and changes in temperature the instrument periodically performs internal measurements These autozero mea surements are then used in the algorithm to accurately calculate the reading of the input signal When autozero is disabled the internal measurements are not performed This increases measurement speed However the internal reference points will eventu ally drift resulting in inaccurate readings of the input signal It is recommended that autozero only be disabled for short periods of time Enabling or disabling autozero Remote programming AZER command is used to enable or disable autozero However it can be disabled by restoring Factory defaults see page 9 SYST AZER STAT lt b gt Enable or disable autozero lt b gt ON or OFF Remote programming example autozero SYST AZER STAT ON Enable autozero SYST AZER STAT OFF Disable autozero NOTE When finished with remote programming press the LOCAL key to restore front panel control Math operations The following math operations can be performed on an input signal relative mX b
31. andards 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 expect 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 prevented access and or insulated from every connection point In some cases connections must be exposed to potential human contact 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 sourc es NEVER connect switching cards directly to AC mains When connecting sources to switching cards install protective de vices to limit fault current and voltage to the card Before operating an instrument make sure the line cord is connected to a properly grounded power receptacle Inspect the con necting 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 pow er disconnect device must be provided in close proximity to the equipment and within easy
32. auto range lt b gt ON or OFF SENS CURR AC RANG lt n gt To set range specify expected magnitude of input lt n gt 0 to 3 A 2 Wire Ohms SENS FUNC RES Select 2 Wire Ohms function SENS RES RANG AUTO lt b gt Enable or disable auto range lt b gt ON or OFF SENS RES RANG lt n gt To set range specify expected resistance at input lt n gt 0 to 12066 Q 4 Wire Ohms SENS FUNC FRES Select 4 Wire Ohms function SENS FRES RANG AUTO lt b gt Enable or disable auto range lt b gt ON or OFF SENS FRES OCOM lt b gt Enable or disable offset compensated ohms SENS FRES RANG lt n gt To set range specify expected resistance at input lt n gt 0 to 12066 0 saidoj saidoj saidoj 16 Integra Series Auick Start Guide Remote programming example 2 wire ohms INIT CONT OFF Disables continuous initiation TRIG COUN 1 Sets trigger count to one SENS FUNC RES Select 2 Wire Ohms function READ Triggers measurement and requests one reading NOTE When finished with remote programming press the LOCAL key to restore front panel control Measure temperature A thermistor or 4 wire RTD can be connected directly to the front panel inputs to perform temperature measurements A thermocouple cannot be connected directly to the front panel inputs NOTE Thermocouple Front panel thermocouple temperature measurements can be performed if usi
33. d in the stack the oldest reading is discarded and the stack is re averaged to yield a new filtered reading e Repeat filter The repeating filter uses a fill and then average stack Each time the stack is filled it is averaged to yield a single filtered reading The stack is then emptied and the process starts over Configuring and controlling filter Referring to Figure 8 perform the following steps to configure and enable filter 1 Press SHIFT and then FILTER TYPE to access filter menu Using the edit keys see Figure 5 set the WINDOW to 0 1 1 10 or NONE With NONE selected a window is not used 3 Using the edit keys set the filter count 1 to 100 RDGS 4 Using the edit keys set the filter TYPE MOVNG AV or REPEAT SCPI programming commands filter For remote programming AVER commands are used to configure and control enable disable the digital filter Each valid function can have its own unique filter configuration DC Volts SENS VOLT DC AVER WIND lt NRf gt Set filter window in lt NRf gt 0 to 10 SENS VOLT DC AVER COUN lt n gt Set filter count lt n gt 1 to 100 SENS VOLT DC AVER TCON lt name gt Select filter type lt name gt MOV or REP SENS VOLT DC AVER STAT lt b gt Enable or disable filter lt b gt ON or OFF AC Volts SENS VOLT AC AVER WIND lt NRf gt Set filter window in lt NRf gt 0 to 10 SENS VOLT AC AVER COUN lt n gt Set filter count lt n
34. d scan A scan RESET returns the scan configuration to the default setup for a simple scan Use edit keys to specify the minimum first channel for the scan Use edit keys to specify the maximum last channel for the scan 5 Use edit keys to enable YES or disable NO the timer If YES you will then be prompted to enter the timer interval Hour Minute Second format 6 Use edit keys to set the reading count RDG CT gt Running a simple scan 1 Configure the Model 27xx for the desired measurement This configuration will be used for every scan channel 2 Press STEP or SCAN to start the scan process 3 After the scan finishes use RECALL to view the stored readings and statis tics Details on the Buffer are provided on page 31 4 Press SHIFT and then SCAN HALT to exit the scan mode SCPI programming commands simple scanning NOTE Not all scan commands are documented here For details on all scan commands refer to the Model 27xx User s Manual See Section 7 For remote programming the TRIG COUN command specifies the number of scans to be performed and the SAMP COUN specifies the number of channels to scan The timer interval is invoked between scans ROUT SCAN lt clist gt Specify scan list lt clist gt SCH where S slot number CH channel number see Note 1 ROUT SCAN TSO lt list gt Select trigger s to start scan lt list gt IMM or reading limits see Note 2 RO
35. d then DCV MATH to access the Math menu Using the edit keys see Figure 5 select the mX B menu item Using the edit keys enter the scale offset value M Using the edit keys enter the offset value B Using the edit keys select the UNITS for the display readings A through Z Q or The displayed readings will be the result of the mX b calculation To disable the mX b math operation press SHIFT and DCV MATH 5 saidoj saidoj saidoj 28 Integra Series Quick Start Guide Percent This math operation determines percent deviation from a specified reference value and is calculated as follows Ref m Reference Where Input is the normal display reading Reference is the user entered constant Percent is the displayed result Percent Percent operation 1 Referring to Figure 9 press SHIFT and then DCV MATH to access the Math menu 2 Using the edit keys see Figure 5 select the PERCENT menu item 3 Using the edit keys enter the reference REF value The displayed readings will be the result of the Percent calculation in To dis able the Percent math operation press SHIFT and DCV MATH Reciprocal 1 X The reciprocal of a reading is displayed when the reciprocal 1 X math function is enabled Reciprocal 1 X Where X is the normal input reading The displayed units designator for reciprocal readings is R This units designator cannot be changed Example
36. e Ratio lt b gt ON or OFF SENS CAV lt b gt Enable or disable Channel Average lt b gt ON or OFF saidoj saidoj saidoj Quick Start Guide Buffer Integra Series 31 Remote programming example ratio Assume two DCV signals connected to channels 1 and 11 of a Model 7700 installed in slot 1 of the mainframe INIT CONT OFF Disables continuous initiation TRIG COUN 1 Sets trigger count to one SENS FUNC VOLT DC Selects DCV function SENS RAT ON Enables Ratio READ Triggers measurements and read the result of the calculation SENS RAT OFF Disable Ratio NOTE When finished with remote programming press the LOCAL key to restore front panel control The Model 27xx has a data store buffer to store readings The Model 2700 and 2701 can store up to 55 000 readings The Model 2750 can store up to 110 000 readings The data store also provides statistical data on measured readings stored in the buffer Statistics include minimum maximum average peak to peak and stan dard deviation Details on statistics are provided in the Model 27xx User s Manual see Section 6 Storing and recalling readings Storing readings 1 Referring to Figure 10 press the STORE key Use the edit keys see Figure 5 to ENTER then number of readings RDGS to store 3 The asterisk annunciator indicates that the buffer is enabled 4 The asterisk annunciator will turn off when the buffe
37. e Temperature Volts Amps Ohms Measurement Range Control MATH LQUTPUT RATIO CH AVG LIMITS ON OFF STORE RECALL DELAY HOLD CONT NOCOMP TYPE MONITOR FILTER REL CH OFF _ CARD Manual ranging Uprange Auto range Enable or Disable EX TRIG TRIG SAVE SETUP OPEN CLOSE Use to select a shifted function CONTINUITY To select press SHIFT and then press 02 CONT Offset Compensted Ohms To select press SHIFT and then 04 OCOMP PERIOD To select press SHIFT and then FREO PERIOD TEST LSYNC GPIB RS 232 DIGITS RATE EXIT ENTER CONFIG__HALT STEP SCAN Manual ranging Downrange Measure volts amps and ohms 1 Front panel connections Connect the DUT as shown in Figure 6 e Use Figure 6A for volts a amps e and 2 wire ohms c connections e Use Figure 6B for 4 wire ohms a connections 2 Function As shown in Figure 7 press the DOV ACV DCI ACI 02 or Q4 key to select the measurement function 3 Range As shown in Figure 7 enable auto range or manually select a measurement range 4 Reading Take a reading from the display saidoj saidoj saidoj Quick Start Guide Integra Series 15 Offset compensated OCOMP ohms measurements For more accurate low resistance measurements all Integra systems provide the offset compensation mode to eliminate errors from the thermoelectric EMF effects During the measurement cycle the built in ohms current sou
38. efers to all three Integra instru ments Models 2700 2701 and 2750 Details on all Model 27xx operations are provided in the Model 27xx Users Manual This includes important additional information on topics covered in the guide and full details on topics not covered in this guide Details on the Model 7700 switching module is covered in the Model 27xx Users Manual Details on Model 7700 installation and connections are provided in the Users Guide supplied with the switching module Details on other Keithley switching modules are covered in the supplied User s Guide Exercise extreme caution when a shock hazard is present Lethal voltage may be present on cable connections or test fix tures 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 expect that hazardous voltage is present in any unknown circuit before measuring While learning to operate an Integra system it is strongly rec ommended that only non lethal signal levels be connected to the front panel or switching module inputs Measure and switching capabilities The basic measurement capabilities of an Integra system are summarized in Figure 1 saidoj saidoj saidoj 4 Integra Series Quick Start Guide CAUTION The maximum input for the mainframe is 1000V peak However if a measure switch module e g module 7700 is installed
39. em cable IEEE 488 cable Keithley 7007 ATOR SERVICABLE PARTS SERVICE BY JED PERSONNEL ONLY sume tim C DIGITAL W O TRIG LINK RS232 MADE IN IEEE 488 A U S A WARNING no INTERNA KEITH LEY SLOT COVER l a CAUTION For CONTINUED PROTECTION AGAINST FIRE HAZARD REPLACE FUSE WITH SAME TYPE AND RATING Two slots for Keithley Using the supplied line cord connect to a grounded Window shows line voltage switching modules AC power outlet The line voltage setting shown in the window of the fuse holder must match line setting the voltage at the AC power outlet saidoj saidoj saidoj 6 Integra Series Quick Start Guide Figure 3 Model 2701 front and rear panels KEITHLEY INTEGRA SERIES SENSE O4 WIRE 2701 ETHERNET MULTIMETER DATA ACQUISITION SYSTEM LO OUTPUT RATIO CHAVG CONT OCOMP PERIOD SENSOR 2 INPUTS DELAY HOLD LIMITS ON OFF TYPE MONITOR CH OFF CARD a EX TRIG TRIG STORE RECALL FILTER REL al PRE A c AMPS SAVE SETUP CONFIG HALT TEST LSYNC ETHERNET RS 232 CAT OPEN CLOSE STEP SCAN DIGITS RATE EXIT ENTER D Communications configuration RS 232 Press SHIFT and then ENTER RS 232 to Power switch Turn on the 2701 by pressing to access menu Use the edit keys to enable ON the on I position To turn off release the switch to RS 232 and set the terminator TX TERM FLOW the off O position control and BAUD rate Ethernet
40. ement speed rate page 21 Filter page 22 Line cycle synchronization Isync page 24 Autozero page 25 Quick Start Guide Math operations page 25 Relative rel page 26 Math mX b page 27 Percent page 28 Reciprocal 1 X page 28 Ratio and channel average page 29 Buffer page 31 Storing and recalling readings page 31 Storing readings page 31 Recalling readings and statistics page 31 Model 7700 switching module page 34 Input connections and measurements page 35 2 wire measurements page 36 4 wire measurements page 36 Channel assignments page 38 Closing and opening channels page 39 Simple scanning page 41 saidoj saidoj saidoj Quick Start Guide Getting started Introduction Integra Series 3 This Quick Start Guide is intended to get a new user familiar with the operation of the instrument It summarizes operation for all basic measurement functions and most features of the Integra instruments It also summarizes the operation of the Model 7700 switching module which adds switching and scanning capabilities to an Integra measurement system Topics that are not discussed in this guide include the following Setups saving and restoring details on triggering dry circuit ohms Model 2750 limits and dig ital I O multiple channel operation and advanced scanning NOTE Reference WARNING In this guide the term Model 27xx r
41. ents The 2 wire connections to front panel inputs are shown in Figure 6A Use these connections for DOV AVC DCI ACI 02 FREQ PERIOD and TEMP thermistor measurements Notice that DCI and ACI measurements use the AMPS and LO terminals shown in Figure 6A e All other 2 wire measurements use the INPUT HI and LO terminals 4 wire measurements The 4 wire connections to front panel inputs are shown in Figure 6B Use these connections for O4 and TEMP 4 wire RTD measure ments Maximum inputs front panel The maximum allowable inputs for the front panel inputs are listed in Table 1 CAUTION To prevent damage to the Model 27xx do not exceed the maxi mum allowable inputs shown in Table 1 When using a switching module the maximum allowable input voltage anywhere in the test system including front panel inputs is degraded to the maximum allowable input voltage of the switching module Maximum inputs for the Model 7700 switching module are listed in Table 2 on page 35 Table 1 Maximum front panel inputs DC Volts 1000V peak AC Volts 750V RMS 1000V peak 8 x 10 e Hz DC Amps and AC Amps 3A DC or RMS Frequency and Period 1000V peak 8 x 10 e Hz saidoj saidoj saidoj Quick Start Guide Integra Series 13 Figure 6 Front panel input connections Front Panel Inputs SENSE O 4WIRE INPUT 7 350V KEITHLEY Front Rear INPUTS switch must be in the out F position to use front panel inputs
42. gt 1 to 100 SENS VOLT AC AVER TCON lt name gt Select filter type lt name gt MOV or REP SENS VOLT AC AVER STAT lt b gt Enable or disable filter lt b gt ON or OFF DC Amps SENS CURR DC AVER WIND lt NRf gt Set filter window in lt NRf gt 0 to 10 SENS CURR DC AVER COUN lt n gt Set filter count lt n gt 1 to 100 SENS CURR DC AVER TCON lt name gt Select filter type lt name gt MOV or REP SENS CURR DC AVER STAT lt b gt Enable or disable filter lt b gt ON or OFF AC Amps SENS CURR AC AVER WIND lt NRf gt Set filter window in lt NRf gt 0 to 10 SENS CURR AC AVER COUN lt n gt Set filter count lt n gt 1 to 100 SENS CURR AC AVER TCON lt name gt Select filter type lt name gt MOV or REP SENS CURR AC AVER STAT lt b gt Enable or disable filter lt b gt ON or OFF saidoj saidoj saidoj 24 Integra Series Quick Start Guide 2 Wire Ohms SENS RES AVER WIND lt NRf gt Set filter window in lt NRf gt 0 to 10 SENS RES AVER COUN lt n gt Set filter count lt n gt 1 to 100 SENS RES AVER TCON lt name gt Select filter type lt name gt MOV or REP SENS RES AVER STAT lt b gt Enable or disable filter lt b gt ON or OFF 4 Wire Ohms SENS FRES AVER WIND lt NRf gt Set filter window in lt NRf gt 0 to 10 SENS FRES AVER COUN lt n gt Set filter count lt n gt 1 to 100 SENS FRES AVER TCON lt name g
43. ions Front panel rate settings e FAST sets integration time to 0 1PLC Use this setting when speed is of pri mary importance at the expense of noise e MEDium sets integration time to 1 PLC This setting is a compromise between noise and speed e SLOW sets integration time to 5 PLC Use this setting for better noise per formance at the expense of speed Setting measurement speed Referring to Figure 8 press RATE until the desired speed annunciator FAST MED or SLOW turns on saidoj saidoj saidoj 22 Integra Series Quick Start Guide NOTE For AC functions measurement bandwidth is affected by the mea surement speed setting see Model 27xx User s Manual for details SCPI programming commands nplc For remote programming the NPLC command is used to set measurement speed rate Each valid function can have its own unique nplc rate setting SENS VOLT DC NPLC lt n gt Set rate for DC Volts in PLCs SENS VOLT AC NPLC lt n gt Set rate for AC Volts SENS CURR DC NPLC lt n gt Set rate for DC Amps SENS CURR AC NPLC lt n gt Set rate for AC Amps SENS RES NPLC lt n gt Set rate for 2 Wire Ohms SENS FRES NPLC lt n gt Set rate for 4 Wire Ohms SENS TEMP NPLC lt n gt Set rate for Temperature lt n gt 0 01 tox For 60Hz line power x 60 For 50Hz or 400Hz line power x 50 NOTE Measurement speed can also be set using the APERature com mand see Model 27xx User s Manual f
44. istor SENS TEMP TRAN THER Select thermistor transducer SENS TEMP THER lt NRf gt Set thermistor type lt NRf gt 1950 to 10050 ohms 4 Wire RTD SENS TEMP TRAN FRTD Select 4 wire RTD transducer SENS TEMP FRTD TYPE lt name gt Select FRTD type lt name gt PT100 D100 F100 PT3916 PT385 or USER Thermocouple SENS TEMP TRAN TC Select thermocouple transducer SENS TC TYPE lt type gt Select T C type lt type gt J K T E R S B or N SENS TC ODET lt b gt Enable or disable open T C detector lt b gt ON or OFF The commands to specify the constants for the USER FRTD type are provided in the Model 27xx User s Manual Remote programming example thermistor INIT CONT OFF Disables continuous initiation saidoj saidoj saidoj 18 Integra Series Quick Start Guide TRIG COUN 1 Sets trigger count to one SENS FUNC TEMP Select Frequency function SENS TEMP TRAN THER Select thermistor transducer SENS TEMP THER 5000 Select 5000 ohm thermistor READ Triggers measurement and requests one reading NOTE When finished with remote programming press the LOCAL key to restore front panel control Measure frequency and period The Model 27xx can measure frequency or period Period 1 Frequency 1 Connections Connect the AC signal as shown in Figure 6A b 2 Function Referring to Figure 7 select the Frequency or Period function e
45. istory page Revision A Document Number 27XX 903 01 cccccccccccccccesssssccecceccessesseeeeeeeeeseesnaeeees May 2003 All Keithley product names are trademarks or registered trademarks of Keithley Instruments Inc Other brand names are trademarks or registered trademarks of their respective holders IGIS Safety Precautions The following safety precautions should be observed before using this product and any associated instrumentation Although some instruments and accessories would normally be used with non hazardous voltages there are situations where hazardous conditions may be present This product is intended for use by qualified personnel who recognize shock hazards and are familiar with the safety precautions required to avoid possible injury Read and follow all installation operation and maintenance information carefully before us ing the product Refer to the manual for complete product specifications If the product is used in a manner not specified the protection provided 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 equip ment is operated within its specifications and operating limits and for ensuring 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 instrument The
46. l 2701 User s Manual Trigger and return readings Remote programming The following SCPI command sequence is used to trig ger a finite number of measurements and return the readings It is assumed that Factory defaults have been previously restored INIT CONT OFF Disables continuous measurements Measurements will not be performed until the instrument is triggered TRIG COUN lt n gt Sets the trigger count lt n gt 1 to 9999 This specifies the number of measurements to be performed READ Triggers measurement s and requests reading s Included with each returned reading is a timestamp and a reading number Read ing Timestamp Reading Number For example 1 00000000E 01VDC 8694 16SECS 6141 RDNG The 10VDC reading is returned in exponent format When the Model 27xx was turned on the timestamp and reading number started at zero For the above example the measurement occurred 8 694 16 seconds after the unit was turned on and the reading was the 6 141 taken since the unit was turned on saidoj saidoj saidoj 12 Integra Series Quick Start Guide Front panel input connections NOTE Information on Input connections and measurements for the Model 7700 switching module is provided on page 35 of this guide Front panel input connections are shown in Figure 6 Note that the Front Rear INPUTS switch must be in the out F position in order to use the front panel inputs 2 wire measurem
47. ng a simulated reference junction such as an ice bath as explained in Section 3 of the Model 27xx User s Manual The Model 7700 switching module has a built in cold reference junction that allows a thermocouple to be connected directly to the input terminals of the module Input connections and measurements for the Model 7700 are covered on page 35 Step 3 of the following procedure explains how to select and configure the thermocouple sensor Connections Connect the thermistor as shown in Figure 6A d Function As shown in Figure 7 press the TEMP key to select the Temperature function Temperature configuration Press SHIFT and then TEMP SENSOR to access the menu Use the front panel edit keys to select and configure thermistor 4 wire RTD or thermocouple temperature measurements e Thermistor a Set measurement UNITS C F or K b Select the THRMSTR sensor c Select thermistor type 2252W 5000W or 10kW e 4 Wire RTD d Set measurement UNITS C F or K e Select the 4W RTD sensor f Select RTD type PT100 D100 F100 PT385 PT3916 or USER The parameters for the USER RTD type can only be set using remote pro gramming see Section 3 of the Model 27xx User s Manual for details Thermocouple a Set measurement UNITS C F or K b Select the TCOUPLE sensor saidoj saidoj saidoj Quick Start Guide Integra Series 17 c Select the thermocouple type K J N B
48. ng module has a built in cold reference junction that allows thermocouples to be connected directly to the screw terminals channels 1 through 20 of the module NOTE Details on the Model 7700 switching module are provided on page 34 saidoj saidoj saidoj Quick Start Guide Integra Series 5 Front and rear panels mainframe The front and rear panels of the Models 2700 2701 and 2750 are shown in Figure 2 Figure 3 and Figure 4 These illustrations show all controls and connectors Figure 2 Model 2700 front and rear panels KEITHLEY Integr ri gra Series i aa ane p HI MATH OUTPUT RATIO CHAVG CONT OCOMP PERIOD SENSOR SHIFT DELAY HOLD LIMITS __ON OFF TYPE MONITOR CH OFF CARD Local EXTRIG TRIG STORE RECALL FILTER REL POWER SAVE SETUP CONFIG HALT TEST LSYNC GPIB RS 232 O OPEN CLOSE STEP SCAN DIGITS RATE EXIT ENTER Communications configuration Power switch Turn on the 2700 by pressing to the on I fe Ue i ee to position To turn off release the switch to the off O position RS 232 and set the terminator TX TERM FLOW control and BAUD rate GPIB Press SHIFT and then EXIT GPIB to access menu Use the edit keys to enable ON the GPIB and set the address ADDR For RS 232 communication connect to serial port of computer using a For GPIB communication connect straight through RS 232 cable DB 9 to GPIB port of computer using an Do not use a null mod
49. odule If a switching module is not installed in the mainframe you can use remote programming to assign a 7700 pseudocard to an empty mainframe slot Pseudocard With a pseudocard installed in an empty slot the Model 27xx will operate as if the switching module is installed Send the following command to assign a 7700 pseudocard to an empty slot SYST PCARx C7700 where x slot number Example SYST PCAR1 C7700 Assigns 7700 pseudocard to slot 1 System channel operation This guide explains how to use system single channel operation to close and open input channels When a single input channel is closed all other reguired relays channels close automatically to route the input signal through the module to the DMM When an input channel closes a previously closed input channel opens There is another operating mode to open close channels multiple channel opera tion For multiple channel operation all switching module channels relays are controlled individually This provides versatility by allowing multiple input channels to be closed at the same time Instructions to use multiple channel operation are not provided in this guide Refer to the 27xx Users manual for more information WARNING Careless multiple MULTI channel operation can create an elec tric shock hazard that could result in severe injury or death Improper operation can also cause damage to the switching modules and external circuitry Multiple channel
50. or details NOTE For AC volts and amps BANDwidth commands can be used to set measurement bandwidth see Model 27xx User s Manual for details Remote programming example nplc SENS VOLT DC NPLC 2 Sets rate for DC Amps to 2 PLC NOTE When finished with remote programming press the LOCAL key to restore front panel control The digital filter is used to stabilize noisy measurements A final filtered reading is a windowed average of a number of reading conversions up to 100 temporarily stored in a buffer stack Readings not within the specified window are not put in the stack Filter window As long as the input signal remains within the selected filter window readings continue to fill the stack If a reading is outside of the window the filter resets and starts over A window is expressed as a percent of range or percent of maximum temperature reading For example on the 10V range a 10 window means that the filter window is 1V Filter count This specifies the number of readings to average 1 to 100 Fora filter count of 1 no averaging is done saidoj saidoj saidoj Quick Start Guide Integra Series 23 Filter type There are two filter types Moving average and repeating e Moving filter The moving average filter uses a first in first out stack When the stack becomes full the readings are averaged to yield a single fil tered reading that is displayed For each subsequent reading place
51. r becomes full Recalling readings and statistics 1 Referring to Figure 10 press RECALL to access the data recall mode Figure 10 shows how five stored readings are organized in the circular buffer Use the range and f keys to position the buffer pointer and use the cursor 8 and keys to view the reading or statistic and timestamps saidoj saidoj saidoj 32 Integra Series Quick Start Guide NOTE Each stored reading is referenced to either a relative timestamp or to a real time clock timestamp The real time clock timestamps each reading with the time and date Details on the real time clock times tamp are provided in the Model 27xx User s Manual see Section 6 The default timestamp is the relative timestamp and is explained as follows For the relative timestamp there are two timestamp types absolute or delta The absolute timestamp S references each stored reading to zero seconds which is the timestamp for the first stored reading The delta timestamp dS indicates the time in seconds between the displayed read ing and reading before it 3 When finished press EXIT to leave the data recall mode SCPI programming commands buffer NOTE Not all buffer commands are documented here For details on all buffer commands refer to the Model 27xx Users Manual see Sec tion 6 Store and recall readings TRAC CLE Clear the buffer TRAC TST FORM lt name gt Select relative timestamp type lt name gt
52. rce is turned off and then turned on again and the resulting EMF error is automatically sub tracted This technique is typically used when measuring values less than 100Q Use 4 wire connections as shown in Figure 6B a With the 24 function selected OCOMP is enabled buy pressing the SHIFT key and then the 04 OCOMP key When enabled the OCOMP annunciator is on Valid measurement ranges for OCOMP is 10kQ or less or use Auto range OCOMP is disabled by again pressing SHIFT and then O4 SCPI programming commands volts amps and ohms DC Volts SENS FUNC VOLT DC Select DC Volts function SENS VOLT DC RANG AUTO lt b gt Enable or disable auto range lt b gt ON or OFF SENS VOLT DC RANG lt n gt To set range specify expected magnitude of input lt n gt 0 to 1010 V AC Volts SENS FUNC VOLT AC Select AC Volts function SENS VOLT AC RANG AUTO lt b gt Enable or disable auto range lt b gt ON or OFF SENS VOLT AC RANG lt n gt To set range specify expected magnitude of input lt n gt 0 to 757 5 V DC Amps SENS FUNC CURR DC Select DC Amps function SENS CURR DC RANG AUTO lt b gt Enable or disable auto range lt b gt ON or OFF SENS CURR DC RANG lt n gt To set range specify expected magnitude of input lt n gt 0 to 3 A AC Amps SENS FUNC CURR AC Select AC Amps function SENS CURR AC RANG AUTO lt b gt Enable or disable
53. re 11A Turn the locking screw to unlock and open the cover Figure 11B shows an example of how the module is to be wired Use insulated wire up 20 AWG for connections When replacing the cover push in the screw to lock Figure 12 and Figure 13 show the various input connections and how the input signal is routed through the switching module to the mainframe DMM saidoj saidoj saidoj 36 Integra Series Quick Start Guide Figure 11 Model 7700 switching module A Module cover B Module wiring Locking screw 4 A U U Co N TEN z 1 Supplementary V insulation S 1 E E M 2 wire measurements Figure 12A shows example 2 wire connections for all functions except AMPS Input channels 1 through 20 of the Model 7700 can be used for these measure ments The input signal connects to the DMM when the appropriate input channel is closed For example assume a DC Volts signal is connected to channel 1 When channel 1 is closed channel 25 also closes to connect the input to the DMM Figure 12B shows an example of 2 wire connections for the AMPS function Input channels 21 and 22 can be used for amps measurements When input channel 21 or 22 is closed the amps input is connected
54. re 6A c Function Referring to Figure 7 select the Continuity function by pressing SHIFT and then Q2 CONT 3 Using the front panel edit keys set the threshold LEVEL from 1 to 10000 4 Continuity Test If the tested circuit is below the set threshold pass con dition the unit will beep and display the resistance reading If the tested circuit is above the threshold fail condition the message OPEN will be displayed SCPI programming commands continuity SENS FUNC CONT Selects Continuity function SENS CONT THR lt NRf gt Set threshold level lt NRf gt 1 to 1000 Remote programming example continuity INIT CONT OFF Disables continuous initiation TRIG COUN 1 Sets trigger count to one SENS FUNC CONT Selects Continuity function SENS CONT THR 10 Sets threshold to 10 ohms READ Trigger measurement and request one reading For the pass condition READ will return the measured resistance reading For the fail condition open the value 9 9E37 will instead be returned NOTE When finished with remote programming press the LOCAL key to restore front panel control saidoj saidoj saidoj 20 Integra Series Quick Start Guide Optimizing performance Factors that affect measurement performance include instrument warm up display resolution measurement speed filter line cycle synchronization and autozero Figure 8 Measurement performance control
55. 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 under test ALWAYS remove power from the entire test system and discharge any capacitors before connecting or disconnecting ca 5 03 bles or jumpers 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 common side of the circuit under test or power line earth ground Al ways 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 equipment may be impaired Do not exceed the maximum signal levels of the instruments and accessories as defined in the specifications and operating in formation 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 applied to the device under test Safe operation requires the use of a lid interlock Ifa screw is present connect
56. sables continuous initiation TRIG COUN 1 Sets trigger count to one INIT Measures input signal CALC1 FORM PERC Selects Percent calculation CALC1 STAT ON Enables math INIT Triggers one measurement CALC1 KMAT PER ACQ Uses the measured input signal as reference Now connect the signal to be measured and continue as follows CALC1 DATA Requests result of Percent math reading CALC1 STAT OFF Disables math NOTE When finished with remote programming press the LOCAL key to restore front panel control Ratio and channel average The ratio or average of two switching module channels can be calculated and dis played Ratio is valid for the DCV function and channel average is valid for DCV and TEMP thermocouples only Channel A Ratio Channel B Channel A Channel B 2 Where Channel A is an input channel and Channel B is its paired sense channel Channel Average saidoj saidoj saidoj 30 Integra Series Quick Start Guide Paired switching module channels are used for ratio and channel average For the Model 7700 switching module input channels 1 through 10 are paired to sense channels 11 through 20 Closing channel 1 also closes channel 11 closing chan nel 2 also closes channel 12 and so on Information on Input connections and measurements for the Model 7700 switch ing module are provided on page 35 Figure 13 shows connection examples for ra
57. t Select filter type lt name gt MOV or REP SENS FRES AVER STAT lt b gt Enable or disable filter lt b gt ON or OFF Temperature SENS TEMP WIND lt NRf gt Set filter window in lt NRf gt 0 to 10 SENS TEMP AVER COUN lt n gt Set filter count lt n gt 1 to 100 SENS TEMP AVER TCON lt name gt Select filter type lt name gt MOV or REP SENS TEMP AVER STAT lt b gt Enable or disable filter lt b gt ON or OFF Remote programming example filter for 2 wire ohms SENS RES AVER WIND 2 Sets filter window to 2 SENS RES AVER COUN 10 Set filter count to 10 SENS RES AVER TCON REP Select Repeat filter type SENS RES AVER STAT ON Enable filter NOTE When finished with remote programming press the LOCAL key to restore front panel control Line cycle synchronization Isync Synchronizing A D conversions with the frequency of the power line increases common mode and normal mode noise rejection When line cycle synchronization is enabled the measurement is initialized at the first positive going zero crossing of the power line cycle after the trigger Enabling or disabling line cycle synchronization 1 Referring to Figure 8 press SHIFT and then RATE LSYNC to display the present state of line synchronization off or on 2 Use the edit keys to see Figure 5 enable ON or disable OFF line syn chroniztion SCPI programming commands Isync SYST LSYN STAT lt b gt En
58. the input s to the DMM Again pressing the key opens all channels and then closes the next input channel After sequencing past the last input channel opera tion wraps back around to the beginning where all channels will open saidoj saidoj saidoj 40 Integra Series Quick Start Guide The 8 key operates in a similar manner except it sequences input channels in a descending order SCPI programming commands close open channels NOTE Not all close open commands are documented here For details on all switching module commands refer to the Model 27xx Users Manual see Section 2 Specify one input channel to close lt clist gt SCH where S is the slot number and CH is the channel number Returns list of closed input channels Open all channels also disables ratio and channel average ROUT CLOS lt clist gt ROUT CLOS ROUT OPEN ALL Remote programming example close and open channels Closes input channel 6 of module in slot 1 Opens all channels ROUT CLOS 106 ROUT OPEN ALL NOTE When finished with remote programming press the LOCAL key to restore front panel control Figure 15 Simple scanning Monitor and Ch Off Used for advanced scan see TYPE MONITOR CH OFF CARD Section 7 of Users Manual EX TRIG TRIG FILTER REL Qadr SAVE __ SETUP CONFIG __ HALT TEST _LSYNC GPIB __RS 232 OPEN CLOSE STEP SCAN DIGITS RATE EXIT ENTER DELAY HOLD
59. ting time before performing a measurement By default an auto delay is used to automatically set a suitable settling time The delay can be set manually for measurements that reguire longer delay periods See Section 7 of the Model 27xx Users Manual to set delay e Reading count STEP Reading count specifies the number of channels to scan For example if there are 10 channels in the scan list the reading count is typically set to 10 If reading count is lt 10 then lt 10 channels will be scanned If reading count is gt 10 operation will wrap around to the beginning of the scan list and continue to scan until the reading count is satisfied SCAN Reading count specifies the number of scans to perform In general use a multiple of the scan list count to specify the number of scans to perform For example if there are 10 channels in the scan list set the reading count to 10 to perform one scan For two scans set the reading count to 20 For three scans set the reading count to 30 saidoj saidoj saidoj 42 Integra Series Quick Start Guide Configuring a simple scan 1 Referring to Figure 14 press SHIFT and then STEP CONFIG to access the scan configuration menu 2 Use the edit keys see Figure 5 to select the SIMPLE scan NOTE Other scan options An ADVANCED scan allows each scan channel to have its own unique measurement configuration See Section 7 of the Model 27xx Users Manual for information on an advance
60. tio and channel average Ratio and channel average operation NOTE In order to perform the ratio or channel average operation a Keithley switching module e g Model 7700 must be installed in the main frame or a pseudocard must be assigned to an empty slot Details to assign a 7700 Pseudocard to an empty slot are provided on page 34 Ratio DCV As shown in Figure 9 Ratio is enabled by pressing SHIFT and then DCI RATIO When an input channel is closed the instrument will measure the input channel and then the sense channel It will then calculate the ratio and dis play the result To disable Ratio again press SHIFT and then DCI RATIO Channel Average DCV or thermocouple TEMP As shown in Figure 9 Chan nel average is enabled by pressing SHIFT and then ACI CH AVG When an input channel is closed the instrument will measure the input channel and then the sense channel It will then calculate the average and display the result To disable Channel average again press SHIFT and then ACI CH AVG WARNING Switching module installation and connections are only to be performed by gualified service personnel For details on these procedures refer to the User s Guide that is supplied with the switching module SCPI programming commands ratio and channel average NOTE Not all ratio and channel average commands are documented here see Section 5 of the Model 27xx Users Manual SENS RAT lt b gt Enable or disabl
61. to the DMM for measurement 4 wire measurements Channel pairing is used for 4 wire measurements With a 4 wire function e g W4 selected closing an input channel also closes a corresponding sense chan nel Figure 13 shows examples of connections for functions that require 4 wire connections saidoj saidoj saidoj Quick Start Guide Integra Series 37 For a 4 wire function the input s is connected to an input channel and its corre sponding sense channel Input channels 1 through 10 are paired to channels 11 through 20 When an input channel is closed its paired channel and the back plane isolation relays channels 24 and 25 also close For example closing channel 1 also closes channels 11 24 and 25 Figure 12 7700 switching module connections 2 wire measurements A DCV ACV FREQ PERIOD W2 CONT and TEMP thermocouple and thermistor L Backplane Isolation Relay DC Volts DCV IModel27xxssss s Ssge I povedesieucteceutiedsecceensececusesceceusecses PSP S tem l 1 Model 7700 Switching Module DMM It ba 7 1 Terminal Block Channel 1 l Input 14 H Relay Channel 25 a 7 KO HI AC Volts ACV 2 Wire Ohms Q2 Thermister Temperature and and TEMP Frequency FREQ Continuity CONT and Period PERIOD B AMPS Model 27xx sss ge l l Channel 21 DCI or ACI Relay Amps Valid 7700 switching module channels for these measurements Channels 1 through 20
62. ution for DC Volts SENS VOLT AC DIG lt n gt Set display resolution for AC Volts SENS CURR DC DIG lt n gt Set display resolution for DC Amps SENS CURR AC DIG lt n gt Set display resolution for AC Amps SENS RES DIG lt n gt Set display resolution for 2 Wire Ohms SENS FRES DIG lt n gt Set display resolution for 4 Wire Ohms SENS TEMP DIG lt n gt Set display resolution for Temperature SENS FREQ DIG lt n gt Set display resolution for Frequency SENS PER DIG lt n gt Set display resolution for Period lt n gt 4to 7 Where 4 3H digits 5 4H digits 6 5H digits and 7 6H digits Remote programming example digits SENS CURR DC DIG 5 Sets DC Amps display resolution for 4H digits NOTE When finished with remote programming press the LOCAL key to restore front panel control Measurement speed rate For the volts amps ohms and temperature measurements the RATE key sets the integration time measurement speed of the A D converter The integration time is the period of time the input signal is measured Integration time is specified in parameters based on a number of power line cycles NPLC where 1 PLC for 60Hz is 16 67ms 1 60 For 50Hz and 400Hz 1 PLC is 20ms 1 50 As speed rate increases reading noise also increases Typically the desired rate setting is a compromise between speed and noise From the front panel setting the rate affects all other valid measurement funct
63. vel to the input and press REL to enable it REL annunciator on The reference rel level becomes the zero baseline Future readings will be the difference between the actual input and the reference rel level For example for a 1 reference level future readings will be the actual input minus 1V SCPI programming commands relative DC Volts SENS VOLT DC REF lt n gt Specify rel value lt n gt 1010 to 1010 V SENS VOLT DC REF STAT lt b gt Enable or disable rel lt b gt ON or OFF SENS VOLT DC REF ACQ Use input signal as rel value AC Volts SENS VOLT AC REF lt n gt Specify rel value lt n gt 757 5 to 757 5 V SENS VOLT AC REF STAT lt b gt Enable or disable rel lt b gt ON or OFF SENS VOLT AC REF ACQ Use input signal as rel value DC Amps SENS CURR DC REF lt n gt Specify rel value lt n gt 3 1 to 3 1 A SENS CURR DC REF STAT lt b gt Enable or disable rel lt b gt ON or OFF SENS CURR DC REF ACQ Use input signal as rel value AC Amps SENS CURR AC REF lt n gt Specify rel value lt n gt 3 1 to 3 1 A SENS CURR AC REF STAT lt b gt Enable or disable rel lt b gt ON or OFF SENS CURR AC REF ACQ Use input signal as rel value 2 Wire Ohms SENS RES REF lt n gt Specify rel value lt n gt 120e6 to 120e6 SENS RES REF STAT lt b gt Enable or disable rel lt b gt ON or OFF SENS RES REF ACQ Use input signal as rel value
64. y 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 example setting the line voltage or replacing consumable materials Maintenance procedures are described 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 service 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 signals are Measurement Category I and must not be directly connected to mains voltage or to voltage sources with high transient over voltages Measurement Category II connections require protection for high transient over voltages often as sociated with local AC mains connections Assume all measurement control and data I O connections are for connection to Category I sources unless otherwise 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 St

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