Fluke 515A - 4.2 DC VOLTAGE RANGE TEST

Figure 2. DC Output Voltage Range Test Configuration
HI
LO
GUARD
NULL
DET II
TI
(BATTERY
OPERATED)
REF DIVIDER
2.4.1
IN
COM
GUARD
HI
LO
OUTPUT
INPUT
HI
LO
DC TRANSFER
STANDARD
(BATTERY OPERATED)
2.4.4
DC VOLTAGE
CALIBRATOR
GUARD
OUT
SENS
+
–
––
+
+
+
–
–
NULL
DET I
2.4.1
(BATTERY OPERATED)
2.4.3
2.4.2
4.2.5.4 Reconnect the applicable test configuration (Figure 2 or 3).
4.2.6 Set the dc voltage standard power switch to operate.
4.2.7 Perform calibration in accordance with the following table as follows:
4.2.7.1 For each operation zero”, set the null detectors operate–zero switch (sw) to zero; make the required
equipment settings and switch the null detectors operate–zero switch to operate.
4.2.7.2 During each operation Null I”, set the DC voltage standard output voltage control(s) and/or adjust the
reference divider coarse and fine controls to obtain a null on the null detector I 10 V range; then, verify that the
null detector II indication is within the applicable tolerance limit listed.
Null Detectors TI Range Reference Divider DC Voltage Null Det. I Tolerance
Operation Settings Input SW Output SW Standard Operation Limits
”Zero” 100V 100V 100V 100V ”Null I” 
3 mV or less
” 10V 100V 10V 100V ” 
300 V or less
” 1V 100V 1V 100V ” 
30 V or less
4.3 DC MICROVOLTS OUTPUT AND LINEARITY TEST
4.3.1 Set equipment control(s) to allow circuit changes without causing damage to the equipment whenever
applicable.
4.3.2 Connect equipment as shown in Figure 3.
NAVAIR 17–20AQ–70
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