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object should thus only be grounded at one point, preferably at the oscillator
output. In vibration experiments, when the compressor input signal may be
the output from an accelerometer the accelerometer should be electrically
insulated from the test specimen.
Synchronization.
Synchronization of the two oscillators is made by simply turning the re-
spective frequency dial pointers to the same frequency and set the AUTO-
MATIC SCANNING to
"On".
Detailed informations on the operation of the
two oscillators as well as the Level Recorder is found in the separate in-
struction manuals for the three instruments.
Preprinted Paper.
A special preprinted recording paper QP 1141 has been produced for use in
conjunction with the Type 3328 Automatic Frequency Response Recorder.
The paper width is 100 mm and it is intended for ink writing.
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