TB 9-6625-111-24
8. Dc Voltage
a. Performance Check
and COM inputs.
(1) Connect calibrator to TI V Ω
NOTE
For autorange to include the 400 mV (lowest) range press the
rotary switch pushbutton three times.
(2) Set calibrator output for 0.0 mV. If TI does not indicate within limits specified
in first row of table 3, perform b below.
(3) Repeat technique of (2) above, using settings and indications listed in table 3. If
TI does not indicate within limits specified in table 3, perform b below.
Table 3. Dc Voltage Accuracy.
Calibrator Output
Test instrument
(Dc)
Range
Min
Max
0.0
mV
400
mV
-000.5
000.5
3.5
V
4.000
V
3.488
3.512
-3.5
V
4.000
V
-3.512
-3.488
35
V
40.00
V
34.88
35.12
300.0 1
300
V
V
299.2
301.0
300 2
300
V
V
299.2
301.0
300.0 range will appear as 400 V range on display.
1
300 range will appear as blank on display.
2
(4) Set calibrator output to minimum.
b. Adjustments
(1) Ensure rotary switch is set to V
.
Remove four case screws to access TI
adjustment.
and COM inputs and set calibrator for an
(2) Connect calibrator to TI V Ω
output of 3.500 V dc.
(3) Adjust R26 until TI displays 3.500 V dc 0.001.
(4) Reassemble TI.
(5) No further adjustments can be made.
9. Ac Voltage
a. Performance Check
(1) Connect calibrator to TI V Ω
and COM inputs.
(2) Set TI rotary switch to V~.
(3) Set calibrator for an output of 0.0 V at a frequency of 0 Hz. If TI does not
indicate within limits specified in first row of table 4, perform b below.
(4) Repeat technique of (3) above for remaining settings and indications listed in
