TB 9-6625-2020-24
Table 8. Dc Volts
Test instrument
Test instrument
Calibrator
range
indications
output settings
pushbuttons
Min
Max
200
mV
180
mV
179.7
mV
180.3
mV
2
V
1.8
V
1.797
V
1.803
V
20
V
18
V
17.97
V
18.03
V
200
V
180
V
179.7
V
180.3
V
1000
VDC
1000
V
998
V
1002
V
b. Adjustments
(1) Set calibrator to STANDBY and disconnect from TI.
and LOW.
(2) Short TI VOLTS/
(3) Press TI 200 mV pushbutton. Adjust R1542 (fig. 2) until TI indicates 000.0.
and LOW.
(4) Remove short from VOLTS/
and LOW.
(5) Connect calibrator OUTPUT HI and LO to TI VOLTS/
(6) Press TI 2 V pushbutton.
(7) Set calibrator for a 1.8 V dc output. Adjust R1443 (fig. 2) until TI indicates
1.800 V (R).
(8) Set calibrator for a 180 mV dc output.
(9) Press TI 200 mV pushbutton. Adjust R1531 (fig. 2) until TI indicates 180.0 mV (R).
(10) Set calibrator to STANDBY and disconnect from TI.
and LOW.
(11) Short TI VOLTS/
(12) Connect multimeter INPUT HI to TP1013 (fig. 2) and LO to TI LOW. Adjust
R1011 (fig. 2) until multimeter indicates 0.000 V dc.
(13) Disconnect multimeter and short from TI.
Figure 2. Type DM 502A left and right side views.
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