TB 9-6695-281-35
NOTE
Unless otherwise specified, verify the result of each test and,
whenever the test requirement is not met, take corrective
action before continuing with the calibration. Adjustments
required to calibrate the TI are included in this procedure.
Additional maintenance information is contained in the
manufacturer's manuals, TM 55-6695-200-15, and TM 55-
6695-203-13 for this TI.
NOTE
Unless otherwise specified, all controls and control settings
refer to the TI.
7. Equipment Setup
a. Zero TI
voltmeter, using mechanical zero located below meter.
b. Position controls as listed in (1) through (5) below:
(1) Temperature selector switch to OFF.
(2) OHMS selector switch (lead resistance on some models) to 2 Ω.
(3) ADJUST INDICATOR control to 0.2 LOW.
(4) Resistance and voltage selector switch to LEAD RES CHECK.
(5) LEFT and RIGHT switch to LEFT and SINGLE.
8. Circuit Resistance
a. Performance Check
(1) Connect resistance measurement system (A2) to resistance standard (A3), using
leads (B3 and B4). Measure and record the zero resistance of resistance standard.
(2) Connect TI to resistance standard high and low terminals, using thermocouple
thermometer (red and black) leads.
(3) Adjust resistance standard for 2 ohms.
(4) Press and hold TI PUSH FOR OHMS pushbutton while adjusting resistance
standard X1, X.1, and X.01 controls until TI voltmeter indicates a null (zero).
(5) Release PUSH FOR OHMS pushbutton. Resistance standard indication, plus
value recorded in (1) above will be between 1.76 and 1.84 ohms. If not, perform b below.
4