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TM1-6625-736-13&P
(f)
Repeat steps (c) to (e) for accelerometer channels 2, 3 and 4.
(6)
For each measurement recorded, take the difference between the high and low data points. The signal
level measured should be within the .expected tolerance values as stated in table 4-2.
Table 4-2. Expected Signal Output
GAIN RANGE
HI-LO MEASUREMENT
1:1
0.983V ± 2%/
1:4
0.245 V 2%
1:16
0.060 V ± 2 digits
1:64
0.016 V ± 2 digits
e.
FREQUENCY OUTPUT
Disconnect the DVM and signal generator from the Electronic Test Set. It is important the EXT ACC be
disconnected. Perform the following:
(1)
Select MONO PULSE on the TACH 2 TACHO CONTROL on the Electronic Test Set.
(2)
Connect the frequency counter to the TACH 2 BNC output on the rear panel of the Electronic Test Set.
(3)
Measure either the frequency output or the period. Compare the results with table 4-3.
Table 4-3. Expected Frequency Output
FREQUENCY OUTPUT
OUTPUT PERIOD
4.7683 Hz 0.01%
209715000 nS 0.01%
4-5
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