TB 9-4935-365-35
10. Dc Current (Model 8120A)
a. Performance Check
(1) Press FUNCTION MA-DC and RANGE 1 pushbuttons.
(2) Set calibrator for an output amplitude of 1 mA dc. If TI does not indicate within
(3) Repeat technique of (1) and (2) above using settings listed in table 5.
TI will
indicate within limits specified in table 5.
Table 5. Dc Current
Calibrator
Test instrument
Adjustment
Range
Indication limits
Output
setting (MA)
Min
Max
(R)
1 mA
1
0.9988
1.0012
MA
100 A
---
100 A
99.88
100.12
10 mA
10
9.988
10.012
---
100 mA
100
99.88
100.12
---
1A
1000
998.8
1001.2
---
(4) Set calibrator output to minimum.
b. Adjustments. No further adjustments can be made.
11. Resistance
a. Performance Check
(1) Press function 10 MΩ pushbutton.
(2) Set calibrator for a 10 MΩ nominal output.
(3) Rotate calibrator knob below EDIT FIELD pushbutton to adjust calibrator
display indication to equal TI indication. If calibrator err display does not indicate within
(4) Repeat technique of (1) through (3) above, using outputs and settings listed in
corresponding adjustments in table 6.
Table 6. Resistance
Test instrument
Calibrator
Adjustments
Range pushbutton
Nominal output
err display
settings
indication (%)1
(R)
10 M
10 MΩ
0.06 (0.11)
10 MEG CAL (10 MEG)
100 (100k)
100 kΩ
0.03 (0.06)
K OHM CAL (K OHMS)
1 (1 k)
1 kΩ
0.03 (0.06)
---
10 (10 k)
10 kΩ
0.03 (0.06)
---
1000 (1 M)
1 MΩ
0.03 (0.06)
---
Values in parenthesis apply to model 8120A.
1
b. Adjustments. No further adjustments can be made.
