TB 9-6625-388-35
(2) Connect decade resistor (A1) to TI X1 and X2 terminals, using leads (B1 and
B2).
(3) Set decade resistor for zero resistance.
(4) On TI, depress GA SENS .01 switch and adjust decade dials until galvanometer
pointer indicates 0. Depress. 1 and 1 GA SENS switches in turn, and readjust decade dial
as required until galvanometer pointer indicates 0. Record indicated resistance. The
decade dial indication divided by 1000 will be called "test lead resistance" and will be
subtracted from all measurements.
(5) Position controls on TI as noted in table 8. Depress GA SENS .01, .1, and 1
switches in turn, and adjust decade resistor to resistance value that provides 0 deflection on
TI galvanometer at GA SENS 1. Decade resistor will indicate within limits specified in
b. adjustments. No adjustments can be made.
15. Murray Loop Accuracy
a. Performance Check
(1) Position TI controls as listed in (a) through (e) below:
(a) RES-VAR-MUR to MUR.
(b) BA to EXT.
(c) Decade dial 1000 to 1.
(d) Decade dials 100, 10 and 1 to 0.
(e) If necessary, unclamp and mechanically zero galvanometer.
(3) Adjust decade resistor A (A1) to 1000Ω.
(4) Adjust power supply (A2) for a 25 volt dc output as indicated on power supply
(5) Position TI MULTIPLY BY switches and decade dials to settings listed in table
(6) Depress TI GA SENS .01, .l, and 1, switches in turn, while increasing or
decreasing resistance of decade resistor B (A1) until TI galvanometer pointer indicates 0.
Indication on decade resistor B will be within limits listed in table 7.
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