TB 9-6625-1014-24
Table 5. LRC Dials Resistance Values - Continued
Test instrument
Resistance standard
Computed difference
LRC dials
indications
Min
Max
6.000
6000
5997.0
6003.0
7.000
7000
6996.5
7003.5
8.000
8000
7996.0
8004.0
9.000
9000
8995.5
9004.5
10.000
10000
9995.0
10,005.0
11.000
11000
10,994.5
11,005.5
17. QX1 Rheostat
a. Performance Check
(1) Position controls as listed in (a) through (d) below:
FUNCTION switch to L-QX1 SERIES.
(a)
DET GAIN control to OFF.
(b)
GEN-DET switch to BATT TEST.
(c)
EXT D-Q terminals shorting strap removed.
(d)
(2) Connect lead from resistance bridge UNKNOWN 1 terminal to EXT D-Q 2
terminal and connect lead from resistance bridge (part of resistance measurement system),
UNKNOWN 2 terminal to TI C3 terminal.
(3) Set TI D-Q SERIES dial to 2.
(4) Adjust resistance bridge for a null indication on dc detector (part of resistance
measuring system).
(5) If resistance bridge does not indicate between 2992 and 3375 Ω, perform b below.
(6) Repeat technique of (3) through (5) above for D-Q SERIES dial settings listed in
table 6. If resistance bridge does not indicate within limits specified, and adjustment was
not required in (5) above, perform b below.
(7) Replace shorting strap between EXT D-Q terminals.
b. Adjustments
(1) Set resistance bridge control to 3184 Ω.
(2) Adjust D-Q SERIES dial for null indication on dc detector.
(3) Loosen setscrew on D-Q SERIES dial and, while maintaining a null dc detector,
set dial to indicate 2. Tighten setscrew.
(4) Repeat a (6) above.
Table 6. QX1 Rheostat Accuracy
Test instrument
Resistance bridge indications
D-Q SERIES dial
Resistance standard
(part of resistance measurement system)
settings
initial settings
(Ω)
Min
Max
4
6320
6151
6597
6
9650
9295
9805
8
12,727
12,444
13,017
10
16,000
15,601
16,238