TB 9-6625-2227-35
Table 6. Resistance
Test instrument
RANGE
Calibrator
ERROR
pushbutton
nominal
display indications
(%)
settings
output
Ω
Ω
20
10
1.5000
Ω
Ω
200
100
.4000
kΩ
kΩ
2
1
.4000
kΩ
kΩ
200
100
.4000
kΩ
MΩ
2000
1
.4000
MΩ
MΩ
20
10
1.0000
b. Adjustments
(1) Adjust 20 ZERO ADJ R111 (fig. 1) for a TI indication of 0.00 kΩ.
(2) Set calibrator to 19 kΩ. Adjust OHM GAIN ADJ (Ω REF) R119 (fig. 1) for TI
indication of actual calibrator resistance.
12. Power Supply
a. Performance Check
NOTE
Do not perform power supply check if all other parameters
are within tolerance.
(1) Connect multimeter to positive side of capacitor (+) C407 (fig. 1) and ground.
If digital multimeter does not indicate between 6.99 and 7.01 V dc, perform b(1) below.
(2) Set multimeter to measure frequency and connect frequency counter input to
JM2 (fig. 1). If multimeter does not indicate frequency between 9980 and 10020 Hz,
perform b(2) below.
b. Adjustments
(1) Adjust POWER SUPPLY + 7 V ADJ R417 (fig. 1) for 7.00 (R).
(2) Adjust 10 kHz CLOCK ADJ TEST AT JM2 R9 (fig. 1) for 9980 to 10020 Hz (R).
13. Final Procedure
a. Deenergize and disconnect all equipment.
b. Annotate and affix DA label/form in accordance with TB 750-25.
