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Quick Results Guide

Remote guard programming

Table 2 lists the SCPI commands to select ohms and cable guard.

Table 2
SCPI commands: ohms and cable guard

Command

Description

:SYSTem:GUARd OHMS

Selects ohms guard mode.

:SYSTem:GUARd CABLe

Selects cable guard mode.

WARNING:

NO INTERNAL OPERATOR SERVICABLE PARTS,SERVICE BY QUALIFIED PERSONNEL ONLY.

WARNING:

NO INTERNAL OPERATOR SERVICABLE PARTS,SERVICE BY QUALIFIED PERSONNEL ONLY.

CAUTION:

FOR CONTINUED PROTECTION AGAINST FIRE HAZARD,REPLACE FUSE WITH SAME TYPE AND RATING.

CAUTION:

FOR CONTINUED PROTECTION AGAINST FIRE HAZARD,REPLACE FUSE WITH SAME TYPE AND RATING.

MADE IN

U.S.A.

INPUT/

OUTPUT

42V

PEAK

250V

PEAK

TRIGGER

LINK

4-WIRE
SENSE

LINE RATING

100-240VAC

50, 60, HZ

100VA MAX

RS232

IEEE-488

(ENTER IEEE ADDRESS

WITH FRONT PANEL MENU)

250V

PEAK

5V
PK

GUARD

GUARD
SENSE

LINE FUSE

SLOWBLOW

2.5A, 250V

INTERLOCK-

DIGITAL I/O

REMOTE

PreAmp

Triax Cable

DUT

WARNING

Guard is at the same voltage level as

input/output high. Therefore, if a

hazardous voltage (³42V peak) is

present on input/output high, it is also

present on the guard terminals of the

Remote PreAmp and mainframe.

KEITHLEY

6430

REMOTE

PreAmp

SENSE

MAINFRAME

Banana Plug Cable

6430 Mainframe (rear panel connectors)

Resistor

Network

Ohms

Guard

IN/OUT

HIGH

Preamp

Cable*

³1k½

*Keithley part number: CA-176-1D.

Figure 9
Basic guarded ohms measurements

Содержание 6430

Страница 1: ...Quick Results Guide 6430 903 01 Rev A September 2003 P6430 903 01A 6430 903 01A www keithley com Model 6430 Sub Femtoamp Remote SourceMeter A Greater Measure of Confidence...

Страница 2: ...Model 6430 Sub Femtoamp Remote SourceMeter Quick Results Guide 2003 Keithley Instruments Inc All rights reserved Cleveland Ohio U S A First Printing September 2003 Document Number 6430 903 01 Rev A...

Страница 3: ......

Страница 4: ...ld incorporate immediately into the manual Addenda are numbered sequentially When a new Revision is created all Addenda associ ated with the previous Revision of the manual are incorporated into the n...

Страница 5: ......

Страница 6: ...cted 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 ma...

Страница 7: ...oltages The 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 info...

Страница 8: ...re complex procedures Remote command programming For the various SourceMeter operating modes covered in this guide the related SCPI commands for remote operation are summarized in tables Most commands...

Страница 9: ...WARNING NO INTERNAL OPERATOR SERVICABLE PARTS SERVICE BY QUALIFIED PERSONNEL ONLY WARNING NO INTERNAL OPERATOR SERVICABLE PARTS SERVICE BY QUALIFIED PERSONNEL ONLY CAUTION FOR CONTINUED PROTECTION AG...

Страница 10: ...KEITHLEY 250V Peak HI HI 40V Peak 40V Peak GUARD 250V Peak 250V Peak IN OUT LO 42V Peak REMOTE Preamp MAINFRAME IN OUT HIGH Figure 3 Remote preamp HI Input Output High GUARD Cable Guard LO Input Outp...

Страница 11: ...keys for numeric entry include the EDIT and keys to control cursor position EDIT and keys to increment or decrement the digit value and the number keys After a value is keyed in press ENTER to select...

Страница 12: ...ely of the lower display line You can toggle the source and measure display fields by pressing the DISPLAY TOGGLE key to place the source and measure values in the desired display fields Basic connect...

Страница 13: ...the plastic safety cover onto the mainframe preamp con nector whenever the Remote PreAmp is not being used Turn off the Model 6430 power then use the supplied preamp cable to connect the Remote PreAmp...

Страница 14: ...sure accuracy is required Center Conductor Inner Shield Outer Shield HI In Out or Sense GUARD Cable LO In Out A Remote PreAmp Triax Connector Configuration 6430 Mainframe INPUT OUTPUT HI LO Zener Clam...

Страница 15: ...ACE FUSE WITH SAME TYPE AND RATING CAUTION FOR CONTINUED PROTECTION AGAINST FIRE HAZARD REPLACE FUSE WITH SAME TYPE AND RATING MADE IN U S A INPUT OUTPUT 42V PEAK 250V PEAK TRIGGER LINK 4 WIRE SENSE H...

Страница 16: ...allows in circuit resistance measurements on DUT where other parasitic leakage devices are present Basic connections with ohms guard are shown in Figure 9 The following menu sequence selects ohms gua...

Страница 17: ...H SAME TYPE AND RATING MADE IN U S A INPUT OUTPUT 42V PEAK 250V PEAK TRIGGER LINK 4 WIRE SENSE HI LO LINE RATING 100 240VAC 50 60 HZ 100VA MAX RS232 IEEE 488 ENTER IEEE ADDRESS WITH FRONT PANEL MENU 2...

Страница 18: ...source value then press ENTER 3 Set compliance limit Use DISPLAY EDIT key to place cursor in Cmpl field use RANGE and keys to select range use edit keys to key in limit value then press ENTER 4 Select...

Страница 19: ...wise high current drawn from the external source could damage the external source or the test circuit Table 4 Measure only V or I procedure Procedure Details 1 Select source measure functions To measu...

Страница 20: ...ement method Press CONFIG press MEAS select SOURCE select AUTO or MANUAL Ohms source readback With source readback enabled the SourceMeter measures both V and I and uses these values for the ohms calc...

Страница 21: ...dure Details 1 Select ohms measurement function Press MEAS 2 Select manual ohms measurement method Press CONFIG press MEAS select SOURCE select MANUAL 3 Select source set source level and set complian...

Страница 22: ...e offset compensation NOTE Manual offset compensated ohms is also available as a math function FCTN This math function allows you to specify both source levels see Math functions in Features to enhanc...

Страница 23: ...nd acquire one data string 1 For measure only the following rules apply Table 9 provides an example to measure I only a To measure V only you must source I To measure I only you must source V b The so...

Страница 24: ...mit to 10mA SENS CURR RANG 10e 3 Select the 10mA measurement range OUTP ON Turn the output on READ Trigger and acquire one data string SourceMeter must be addressed to talk after sending READ to trigg...

Страница 25: ...00 Select 200 range SENS RES MODE AUTO Select the auto ohms measurement method OUTP ON Turn the output on READ Trigger and acquire one data string SourceMeter must be addressed to talk after sending R...

Страница 26: ...eading rate of the instrument It is specified in parameters based on the number of power line cycles NPLC where 1 PLC for 60Hz is 16 67msec 1 60 and 1 PLC for 50Hz and 400Hz is 20msec 1 50 In general...

Страница 27: ...averaged to yield a filtered reading The stack is then cleared and the process starts over Use this filter for sweeping so readings for other source levels are not averaged with the present source lev...

Страница 28: ...lows you to null offsets With the offset displayed measured enabling rel acquires the offset reading as the rel value and zeroes the display as follows Displayed Reading Actual Input Rel Value Since t...

Страница 29: ...AVERage AUTO b Enable disable auto filter b ON or OFF Repeat filter commands SENSe AVERage REPeat COUNt n Set repeat filter count n 1 to 100 SENSe AVERage REPeat STATe b Enable disable repeat filter b...

Страница 30: ...nge the buffer location number To exit from the recall mode press EXIT Timestamp Just below the buffer location number is the timestamp in seconds for the reading It can be referenced to the first rea...

Страница 31: ...source name SENSe raw read ings CALCulate math readings or CALCulate2 limits readings TRACe TSTamp FORMat name Select timestamp format name ABSolute or DELTa TRACe FEED CONTrol name Enable disable buf...

Страница 32: ...equal steps until the stop source level is reached With trigger delay set to zero the time duration at each step is determined by the source delay and the time it takes to perform the measurement With...

Страница 33: ...sired source V or I selected use the following menu sequence to set the start and stop levels and the number of sweep points 2 to 2500 Press CONFIG press SWEEP select TYPE select LOG After selecting L...

Страница 34: ...umber of points in the sweep 1 to 2500 ADJUST POINTS Use to set the source level at each point in the sweep The first point in the sweep is P0000 After setting the level for P0000 increment the pointe...

Страница 35: ...n for the sweep For example if your first setup is stored in memory location 001 set the start point to 001 POINTS Use to specify the number of points memory locations in the sweep For example if ther...

Страница 36: ...can be set automatically by the SourceMeter auto delay or it can be set manually With auto delay selected the delay setting will depend on which current range and source function is being used see Se...

Страница 37: ...evel you set becomes the bias level for the sweep 2 Configure the custom sweep by choosing the number of points and initial value Also be sure to adjust individual sweep points as required 3 Set the s...

Страница 38: ...rithmic SOURce SWEep RANGing name Select source ranging name BEST AUTO or FIXed SOURce xxx STARt n Specify sweep start level n V or I source value SOURce xxx STOP n Specify sweep stop level n V or I s...

Страница 39: ...ST Restore GPIB defaults source V measure I SOUR VOLT 0 Set bias level to 0V SOUR DEL 0 1 Set delay to 100ms SOUR SWE RANG BEST Select best source ranging SOUR VOLT MODE SWE Select the sweep source mo...

Страница 40: ...rent source function SOUR CURR LEV 50e 6 Set current source to 50 A SENS FUNC VOLT Select voltage measurement function SOUR MEM SAVE 3 Save setup in memory location 003 Configure source memory sweep S...

Страница 41: ...ume the SourceMeter is set to output 1mA with 1V compliance If the DUT is above 1k the source will be in compliance If the DUT is below 1k the source will be out of compliance Use the following menu s...

Страница 42: ...mplete listing of limit commands See the Model 6430 Instruction Manual for complete documentation Table 18 SCPI commands basic non binning limit testing Command Description For all limit tests CALCula...

Страница 43: ...measured current I values as follows Power V I Use the following menu sequence to enable the power math function Press CONFIG press FCTN select POWER This math function can now be selected by pressin...

Страница 44: ...NOTE Offset compensated is also available from the CONFIG OHMS menu Using offset compensated from this menu automatically selects zero as one of the source values For details see Measure ohms in the...

Страница 45: ...Y is the reference value The reference value Y can be a user specified value or a reading acquired by the SourceMeter Use the following menu sequence to configure and enable the percent deviation math...

Страница 46: ...on CALCulate MATH NAME name Select math expression name POWER OFF COMPOHM VOLTCOEF or VARALPHA CALCulate STATe b Enable disable math b ON or OFF CALCulate DATA Query math data Table 21 Command sequenc...

Страница 47: ...40 Quick Results Guide...

Страница 48: ...property of Keithley Instruments All other trademarks and trade names are the property of their respective companies Keithley Instruments Corporate Headquarters 28775 Aurora Road Cleveland Ohio 44139...

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