Agilent Technologies 75000 B Series Service Manual page 26

Example: Closed
Channel Resistance
2-8 Verification Tests
This example performs a closed channel resistance test of all measurement
paths. If a FET on resistance is >3.1 kΩ , the program prints a message
indicating which channel has failed. Before the closed channel
Test
measurement, the program checks for stuck channels. If a stuck channel is
found, the program prints a message and halts.
10! RE-SAVE "CLOS_TEST"
20 ASSIGN @Dmm TO 722
30 ASSIGN @Mux TO 70914
40 DISP CHR$(129)
50 DIM Result(1,15),Tree(1,1),Path$(1)[4], Cc$[2],Ch$[2]
60 DATA HI,LO
70 READ Path$(*)
80 Cc$ = "01"
90 !
100 ! Start test
110 !
120 CLEAR SCREEN
130 PRINT "Install Component Assembly and Test Fixture"
140 PRINT
150 PRINT " 1.
160 PRINT " 2.
170 PRINT " 3.
180 PRINT " 4.
190 PRINT " 5.
200 PRINT " 6.
210 PAUSE
220 !
230 ! Measure closed channel resistance
240 !
250 FOR I = 0 TO 1
260 CLEAR SCREEN
270 PRINT TABXY(1,1), "Channel ";Path$(I);" to Direct ";Path$(I);"
Measurements"
280 PRINT TABXY(1,3),"Connect DMM Input HI lead to Channel
";Path$(I)
290 PRINT TABXY(1,4),"Connect DMM Input LO lead to Direct ";Path$(I)
300 DISP "Press Continue when connections are complete"
310 PAUSE
320 OUTPUT @Dmm;"PRESET NORM;FUNC OHM"
330 OUTPUT @Mux;"*RST"
340 !
350 ! Check for stuck channels
360 !
! Card number
Turn mainframe and Agilent 3458A DMM power OFF"
Connect GPIB cable between mainframe and DMM"
Install component assembly into mainframe"
Attach test fixture to component assembly"
Turn mainframe and DMM power ON"
Press Continue when ready to begin testing"