Environmental Noise Measurement Kit User Manual
Page 15
Switching on the system
Before switching on, ensure that all of the cables and connectors are secure.
Ensure that the system has power from either an internal battery (or batteries) or from an external power
connection.
Press the power button on the side of the Optimus Sound Level Meter. The Optimus will power up and is then
ready to be calibrated and to make measurements.
If the environmental noise measurement kit has a modem fitted (CK:685B), this will power up at the same time
and the indicators on the modem will flash to indicate that power is available. The modem does not have a
separate power button.
Calibrating the Optimus Sound Level Meter & Outdoor Microphone
Calibration of the entire measurement chain is important to ensure that the noise levels recorded are accurate.
Calibration should always be carried out with the MK:172 outdoor microphone attached, via the 10m cable, to
the case of the environmental measurement kit and with the Optimus Sound Level Meter connected and
switched on.
1.
Remove the windshield from the MK:172 outdoor microphone (See page 12)
2.
Ensure that the microphone capsule from the sound level meter is attached to the MK:172
3.
Connect the acoustic calibrator to the microphone capsule and switch on the calibrator
4.
Press the Calibrate button on the optimus sound level meter and the instrument will calibrate itself
5.
When the calibration has been completed, press the Back key
6.
Carefully remove the acoustic calibrator from the outdoor microphone and store in the case
7.
Replace the windshield assembly on the MK:172 outdoor microphone
Please refer to the user manuals for the Acoustic Calibrator and the Optimus Sound Level Meter for any
additional information regarding of the sound level meter.
Making measurements with the Environmental Noise Measurement Kits
Always review the following steps before undertaking noise measurements with the environmental noise
measurement kits:
1.
Is the outdoor microphone connected?
2.
Is the Optimus Sound Level Meter connected to both the multi-way connector and the microphone
connector?
3.
For the CK:685 Modem version, has the kit been configured for remote communication and a SIM
Card inserted?
4.
Is the clock in the Optimus Sound Level Meter correct?
5.
Has the system been calibrated?
6.
Has the Optimus Sound Level Meter been programmed to make measurements and if so, are these
settings as expected?
7.
Is the Optimus Sound Level Meter measuring & storing data? Check that the red indicator showing in
the top left corner of the display of the instrument
8.
Has the case been closed and locked securely and are all connectors and cables secure?
