TB 9-4931-217-40
(c) GENERATOR OUTPUT +/OFF/- switch to + (positive).
(6) Adjust LEAD ADJ control for a null indication on TI meter while decreasing
DETECTOR RANGE switch to 3 MICROVOLTS.
(7) Position controls as listed in (a) through (d) below:
(a) DETECTOR RANGE switch to 1000 MICROVOLTS.
(b) GENERATOR OUTPUT +/OFF/- switch to OFF.
(c) FUNCTION switch to YOKE ADJ.
(d) GENERATOR OUTPUT +/OFF/- switch to + (positive).
(8) Adjust YOKE ADJ control for a null indication on TI meter while decreasing
DETECTOR RANGE switch to 3 MICROVOLTS.
(9) Set GENERATOR OUTPUT +/OFF/- switch to OFF.
(10) Repeat (4) through (9) above until no further null adjustment is necessary.
(11) Position controls as listed in (a) through (d) below:
(a) DETECTOR RANGE switch to 1000 MICROVOLTS.
(b) GENERATOR OUTPUT +/OFF/- switch to OFF.
(c) FUNCTION switch to NORMAL.
(d) GENERATOR OUTPUT +/OFF/- switch to + (positive).
(12) Set DETECTOR RANGE switch to 10 MICROVOLTS. If TI meter does not
indicate null, perform b (1) below.
(13) Position controls as listed in (a) through (d) below:
(a) DETECTOR RANGE switch to 1000 MICROVOLTS.
(b) GENERATOR OUTPUT +/OFF/- switch to OFF.
(c) MULTIPLIER switch to 10 X STANDARD.
(d) Resistance decade dials to 000999.9(TEN)(00).
(14) Check and, if necessary, repeat (4) above.
(15) Set GENERATOR OUTPUT +/OFF/- switch to + (positive) and RANGE
switch to 3 MICROVOLTS. If TI meter does not indicate null, perform b (2) below.
(16) Repeat technique of (13) through (15) above, using control settings listed in
table 17. If TI meter does not indicate null at corresponding DETECTOR RANGE switch
setting, perform appropriate adjustment listed in table 17.
Table 17. Multiplier Trimmers
DETECTOR RANGE
MULTIPLIER
Resistance decade
Adjustments (behind upper
switch settings
switch settings
dial settings
calibration trimmers
cover)
10 MICROVOLTS
1 X STANDARD
009999.9 (TEN) (00)
1 MULTIPLIER (R)
10 MICROVOLTS
0.1 X STANDARD
099999.9 (TEN) (00)
0.1 MULTIPLIER (R)
3 MICROVOLTS
0.01 STANDARD
999999.9 (TEN) (00)
0.01 MULTIPLIER (R)
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