Fluke 515A - 4.3 DC MICROVOLTS OUTPUT AND LINEARITY TEST

Figure 3. DC Microvolts Output and Linearity Test Configuration
TI
HI
LO
GUARD
2.4.1
NULL
DET II
IN
COM
GUARD
(BATTERY
OPERATED)
2.4.2
REF DIVIDER
+
–
OUTPUT INPUT
–
–
++
2.4.3
DC VOLTAGE
CALIBRATOR
2.4.4
DC TRANSFER
STANDARD
(BATTERY OPERATED)
–
+
SENS OUT
LOHI
OUTPUT
LOW
1.1
+
–
2.4.1
NULL
DET I
(BATTERY
OPERATED)
2.5
VOLTAGE
DIVIDER
4.3.3 Set the dc voltage standard output control(s) for a 1.100000V output indication, the reference divider input
and output switches to 1.1, the voltage divider control(s) to 0.000999X, and the TI V dial for an indication of
1000 V.
4.3.4 Zero the null detectors in the operate mode by repeating steps 4.2.5 through 4.2.5.4.
4.3.5 Set the dc voltage standard and the null detectors control(s) to operate.
4.3.6 For each of the following settings, adjust the reference divider coarse and fine input controls and/or the dc
voltage standard output control(s) to obtain a reference null indication on the null detector I, then verify that the
null detector II indication is within the tolerance limits listed.
NAVAIR 17–20AQ–70
8