MK:429 Lightweight Outdoor Microphone
Page 7
Operation & Use
Calibration
The Sound Level Meter connected to the MK:429 unit should be calibrated as described in the
Operating Manual for the instrument.
Remove the
Windshield
from the MK:429 to gain access to the preamplifier and microphone
capsule.
Follow the Calibration procedure described in the Operating Manual for the associated Sound
Level Meter.
After calibration, replace the Windshield.
Servicing
The MK:429 unit does not contain any active components and therefore does not require
annual recalibration or servicing.
To maintain the integrity of the seals, a lightweight petroleum based lubricant should be used
on the O-ring seals periodically.
If any of the components are lost or damaged, please contact your local representative or
Cirrus Research plc directly.
The MV:200 Preamplifier used with the MK:429 unit is associated with a Sound Level Meter and
should be kept with the Sound Level Meter at all times.
Do not
exchange preamplifiers or microphone capsules with other Cirrus Research Sound Level
Meters or equipment without consulting the Cirrus Research main office.
No responsibility will be accepted by Cirrus Research for damage caused to equipment due to
misuse or the application of incorrect accessories.
