TB 9-6625-2215-24
30. Dc Voltage
a. Performance Check
(1) Connect leads between TI GUARD and LO terminals and between LO and
HI terminals.
(2) Press FUNCTION DCV and RANGE 10 V pushbuttons and release FAST
pushbutton. Measuring system will indicate 0.0000 (0.0003).
(3) Press RANGE 100 V pushbutton. Measuring system will indicate 00.000 (00.003).
(4) Press RANGE 1000 V pushbutton. Measuring system will indicate 000.00 (000.30).
(5) Press RANGE 10 V pushbutton and remove jumper from HI and LO terminals.
CAUTION
Do not exceed maximum voltages indicated on front panel of TI.
(6) Connect calibrator to TI HI and LO terminals.
(7) Set calibrator output to +9.0000 V dc. If TI does not indicate within limits
Table 13. DC Voltage.
Calibrator
Test instrument
Limits
Output
RANGE
Adjustment
(Vdc)
Min
Max
10 V
b (1)
9.0000
8.9970
9.0030
10 V
b (2)
-9.0000
-9.0030
-8.9970
100 V
b (3)
90.000
89.970
90.030
1000 V
b (4)
900.00
898.83
901.17
(8) Repeat technique of (7) above using calibrator outputs and setting TI to range
perform corresponding adjustment listed in table.
b. Adjustments
(1) Adjust +V ADJ R24 (rear panel) to obtain +9.0000 V dc indication on
measuring system.
(2) Adjust -V ADJ R1 (rear panel) to obtain -9.0000 V dc indication on
measuring system.
(3) Adjust A2 R18 (fig. 3) to obtain indication of +90.000 V dc on measuring system.
(4) Adjust A2 R24 (fig. 3) to obtain indication of +900.000 V dc on measuring system.