Agilent Technologies 75000 Series Service Manual page 33

Connect DMM to:
Diff+
Diff+
Diff+
Diff+
Diff-
Diff-
Diff-
Diff-
Example Program
10 ! RE-STORE "LL_OUT"
20 DIM Nominal(1:4),Input$(1:4)[10]
30 !
40 !---------- Set up I/O path ----------
50 ASSIGN @Amp TO 70911
60 ASSIGN @Dmm TO 722
70 !
80 !---------- Initialize variables ----------
90 Gain= 2.0
100 RESTORE Data_nominal
110 READ Nominal(* )
120 !
130 RESTORE Data_input
140 READ Input$(* )
150 !
160 !---------- Set up DMM and source ----------
170 OUTPUT @Dmm;"PRESET NORM;DCV;RANGE 10"
190 !
200 !---------- Set up amplifier ----------
210 OUTPUT @Amp;"* RST;* CLS" !Reset amplifier
220 WAIT .5
230 !
240 !---------- Perform test ----------
250 FOR J= 1 TO 2
260
270
280
290
Continued on next page
2-14 Verification Tests
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Table 2-1. Low-level Outputs Test
Connect Source to:
Input1
Input1
Input1
Input2
Input1
Input1
Input1
Input2
IF J= 1 THEN
Output$= "DIFF+ "
ELSE
Output$= "DIFF-"
Input Voltage (VDC) Expected Output (VDC)
0.5
0.75
-0.75
0.5
0.5
0.75
-0.75
0.5
1.0
1.5
-1.5
1.0
1.0
1.5
-1.5
1.0