TB 9-6625-195-24
Calibrator Output
Test instrument
(Dc)
Range
Min
Max
349.3 m
350.7m
350
mV
300
V
3.493
3.507
3.5
V
300
V
b. Adjustments
(1) Set the Calibrator for volts dc, 0 V.
(2) Set the TI rotary switch to
V RPM. Press RANGE three times to select the
4 V dc range.
RPM and COM inputs on the TI.
(3) Connect the Calibrator to the V Ω
(4) Set the Calibrator for 3.500 V dc output.
(5) The TI should display 3.500 0.001. If necessary, adjust R21 (fig. 1) to obtain
the proper display.
C3
C2
R34
R21
a. Performance Check
(1) Set TI Function switch to the
V position.
(2) Set the Calibrator for the first value listed in the Calibrator output column of
table 5 and OPR/STBY switch to OPR.
(3) The TI must indicate within the corresponding values listed in the Min/Max
(4) Set Calibrator OPR/STBY switch to STBY.
(5) Repeat technique of (2) and (4) above, using settings and indications listed in
table 5. For Model 88 (CAT II) TI, use table 6 for ranges above 40 V ac. If TI does not
indicate within limits specified in table 5, perform b below.