Chapter 6 – Maintenance
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6.3.5.2
Instrument Test Procedures for the
Vibrex 2000 and Vibrex 2000 Plus
The following tests provide the highest confidence that the
instrument is accurately measuring the incoming sensor signals.
6.3.5.3
Approach:
Signals from a calibrated source will be measure at start, mid,
and end band frequencies of the filters used and compared to
insure they meet specifications. In addition, a mid band signal
will be measured for amplitude, phase, and frequency response
and compared to specification.
All the above testing will be repeated for each of the 2 signal
paths.
Test Equipment:
HP 8904A
Signal
Generator
10 mV to 5 VAC (+/-0.1%),
distortion plus noise less
than -60 dB, sync to sine
signal phase relation
ship180 degrees
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