Pulsar Nova® sound level meter user manual
Page 54
The Nova® sound level meter will automatically make adjustments for the level
produced by the acoustic calibrator and the microphone type fitted to the instrument.
Background Noise
In order for the calibrator to operate as intended, the ambient acoustic noise level
should be no greater than 80dBA.
Stabilisation
In order for the sound pressure level and frequency to stabilise after switching the
calibrator on when coupled to a microphone, a period of at least 3 seconds should be
allowed before performing a calibration.
Changing the Battery
The Model 105 or Model 106 acoustic calibrators use a single 9v alkaline battery. This
type of battery is known as 6F22 or NEDA 1604. It is also commonly known as PP3.
1. Unscrew the screw holding the battery cover on, using a coin or the keyring
provided
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