TB 9-6625-2023-24
b. Adjustments
NOTE
The following adjustments are accessible through holes in rear
panel of TI. Adjustment designators are marked on panel.
(1) Press RANGE 1 key to on.
(2) Set calibrator for a 1 k: output.
(3) Adjust 1k: until TI indication is equal to calibrator output display indication
rounded to TI digits of resolution (R).
(4) Press RANGE 100 key to on.
(5) Set calibrator for a 100 k: output.
(6) Adjust 1M: until TI indication is within r1 count of calibrator output display
indication rounded to TI digits of resolution (R).
(7) Repeat (1) through (6) above to obtain optimum adjustment.
a. Performance Check
(1) Connect calibrator OUTPUT HI and LO to TI INPUT (2 WIRE) HI and LO.
(2) Set controls as listed in (a) through (g) below:
(a) FUNCTION ~V key to on.
(b) RANGE 1 key to on.
(c) TRIGGER INTERNAL key to on.
(d) MATH OFF key to on.
(e) AUTO CAL key to on.
(f) GUARD pushbutton pressed to on.
(g) AC-AC/DC switch (rear panel) to AC.
(3) Set TI and calibrator to settings listed in table 6. If TI indications are not within
limits specified, perform b below.
Test instrument
Calibrator output settings
Test instrument indications
RANGE settings
Voltage (V)
Min
Max
1
1
30
Hz
0.9988
1.0012
1
1
100
Hz
0.9988
1.0012
1
1
40
kHz
0.9927
1.0073
1
1
200
kHz
0.976
1.024
1
1
400
kHz
0.943
1.057
1
1
1
MHz
0.902
1.098
10
10
30
Hz
9.988
10.012
10
10
100
Hz
9.988
10.012
10
10
40
kHz
9.927
10.073
10
10
200
kHz
9.76
10.24