Galaxy Audio CHECK MATE CM-160 User Manual
Page 14
(1) Make the following switch settings.
Display: dBA
Time weighting : FAST
Measurement mode : MAX/MIN Mode function disabled.
Level range: 50 to 100dB
(2) Insert the microphone housing carefully into the insertion hole of the
calibrator.
(3) Turn on the calibrator and adjust the CAL potentiometer of the
SPL meter, until the value displayed matches the value supplied by
the calibrator. All products are well calibrated before shipment.
Recommended Recalibration cycle: 1 year.
IX. MEASUREMENT PREPARATION
(1) Battery Loading
Remove the battery cover on the back and put in one 9V Battery.
(2) Battery Replacement
When the battery voltage drops below the operating voltage, this
symbol will appear . Replace 9 Volt battery.
(1) AC Adapter Connection
When the AC adapter is used, insert the plug of the adapter into the
DC9V connector on the side panel.
X. OPERATING PRECAUTIONS
(1) Wind blowing across the microphone can cause extraneous noise.
When using the instrument in the presence of wind, mount the
windscreen to the mic to avoid picking up undesirable signals.
(2) Calibrate the instrument before operation if the instrument was not in
use for a long time or has been operated in an unfavorable
environment.
(3) Do not store or operate the instrument in high temperature or high
humidity environments.
(4) Keep the microphone dry and avoid severe vibration.
(5) Take out the battery and keep the instrument in a low humidity
environment when not in use.