Model 831 Manual Calibration Without Preamplifier 8-15
Calibration Without Preamplifier
There may be situations where the microphone preamplifier
provided with the Model 831 is not being used. For example
when a hydrophone is being used, no level calibrator is
available so the sensitivity must be input directly by the user.
When the preamplifier has been disconnected, the
Sensitivity tab will appear as shown in FIGURE 8-13.
FIGURE 8-13 Sensitivity Tab Without
Preamplifier
In this situation, the sensitivity of the transducer and the self
noise, if known, can be input directly.
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