Fig. 3.17. Calibration – setting reference level.
Fig. 3.18. Calibration – measurement in progress.
Fig. 3.19. Calibration – accept the result.
Fig. 3.20. Calibration – error message.
accept the result of the calibration / zero calibration factor, if calibration error,
start / repeat the measure,
set reference level – increase by 0.01dB,
hold down 1.5 second – automatic repeat,
set reference level – decrease by 0.01dB,
hold down 1.5 second – automatic repeat,
abort calibration procedure, reject results and back to the results screen.
4. RECOMENDATIONS FOR INSTRUMENT USE
During instrument use following recommendations should be strictly observed:
•
do not remove microphone protection grid if not necessary,
•
perform all connection changes (connecting or disconnecting of preamplifier,
microphone or extension cable) only when the instrument is turned off; making these
changes when the instrument is turned on, or turning the instrument on when
microphone is not connected to its preamplifier can lead to instrument damage,
•
when removing or installing microphone protecting cap use slight rotation right (as
during screw driving) to avoid unwanted removing of microphone protecting grid,
•
protect the microphone against mechanical shocks, dust, moisture and strong gusts of
wind (use windscreen!),
•
do not apply excessive force to connect or disconnect LEMO connectors as these are
equipped with facilities to avoid improper connection; the way to disconnect
microphone preamplifier equipped with LEMO plug is shown on Fig. 4.1.
Fig. 4.1. Disconnecting of microphone preamplifier equipped with LEMO connector.
