MK:429 Lightweight Outdoor Microphone
MK:429 Lightweight
Outdoor Microphone
Operating Manual
This manual, the software to which it relates, the
program code and drawings are all:
© Copyright Cirrus Research plc 1989-2001
DRAFT
MK:429 Lightweight Outdoor Microphone
Page 2
The content of this manual, any illustrations, technical information and descriptions within this document
were correct at the time of going to print. Cirrus Research plc reserves the right to make any changes
necessary, without notice, in line with the policy of continuing product development and improvement.
No part of this publication may be duplicated, reprinted, stored in a data processing system or transmitted
by electronic, mechanical, photographic or other means, or recorded, translated, edited, abridged or
expanded without the prior written consent of Cirrus Research plc.
No liability is accepted for any inaccuracies or omissions in this manual, although due care has been taken
to ensure that is it complete and accurate as possible.
Accessories supplied by Cirrus Research plc have been designed for use with the instrumentation
manufactured by Cirrus Research plc. No responsibility is accepted for damage caused by the use of any
other parts or accessories.
In order to take account of a policy of continual development, Cirrus Research plc reserves the right to
change any of the information contained in this publication without prior notice.
Produced by Cirrus Research plc, Acoustic House, Bridlington Road, Hunmanby, North Yorkshire, YO14 0PH.
© Copyright Cirrus Research plc 2001
Reference Number 01/09/429/00
Document Printing Date 23 March 2001
MK:429 Lightweight Outdoor Microphone
Page 3
Introduction Page 4
Assembly Page 5
Preparation Page 5
Assembling the MK:429 Page 6
Operation & Use Page 7
Calibration Page 7
Servicing Page 7
Guarantee Page 8
Cirrus Research Offices Page 8
MK:429 Lightweight Outdoor Microphone
Page 4
MK:429 Outdoor
Microphone
Introduction
The MK:429 is a lightweight Outdoor Microphone unit designed to provide weather protection to
an MV:200 Series Preamplifier and Class+ Microphone Capsule such as the MK:224 and MK:226
units.
This allows Sound Level Meters such as the CR:703B and CR:800A Series to be used for short
term outdoor measurements. Please note that the MK:429 does not provide weather protection
for the Sound Level Meter. Precautions should be taken to ensure that the Sound Level Meter is
not exposed to adverse weather conditions.
The MK:429 is not designed for long term use, and where measurements are required for
extended periods or where the weather conditions are adverse, an alternative system such as
the MK:425 or MK:426A units should be used. For further details please contact Cirrus
Research plc or your local representative.
The MK:429 is compatible with the MV:200B and MV:200C Preamplifiers provided by Cirrus
Research plc and can be used with any of the ZL:2xx Microphone Extension Cables such as the
ZL:205 5m unit.
Please read the enclosed instructions before using the MK:429.
Windshield & Birdspikes
Top Cone
Preamplifier Housing
Base & Birdspike Holder
Tripod Mount
MK:429 Lightweight Outdoor Microphone
Page 5
Assembly
Preparation
Please ensure that you have received all of the components of the MK:429 unit before
assembly. The MK:429 consists of the following.
Item Description Qty
1 Tripod Mount 1
2 Base & Birdspike Holder 1
3 Preamplifier Housing 1
4 Screws for Base unit 2
5Top Cone 1
6Windshield 1
7 Birdspikes 1 set
Please note that the MK:429 unit does not include an
MV:200 Preamplifier, Class+ Microphone Capsule or
ZL:2xx Microphone Cable.
MK:429 Lightweight Outdoor Microphone
Page 6
Step 2
Step 1
Step 3
Assembling the MK:429
Step 1
A. Remove the microphone capsule from the preamplifier and connect
the ZL:2xx cable to the MV:200 Preamplifier
B. Push the MV:200 Preamplifier through the Preamplifier Housing.
Reattach the microphone capsule to the preamplifier.
C. Ensure that the O-Ring is located in the top of the Preamplifier
Housing and that the MV:200 Preamplifier and ZL:2xx
Microphone Cable is secure.
Step 2.
A. Screw the Top Cone to the Preamplifier Housing to
secure the MV:200 Preamplifier.
It is important that the Top Cone is secure on the
Preamplifier Housing.
Step 3.
A. Attach the Birdspikes to the Base & Birdspike
Holder. Do not attach the Windshield.
Ensure that the three birdspikes are correctly located in the holes
in the Base unit.
B. Push the Preamplifier Housing into the Base & Birdspike
Holder and secure using the two screws supplied.
Ensure that the ZL:2xx microphone cable exits through the hole in
the side of the Base units
C. Insert the Windshield into the Birdspikes.
D. Attach the Tripod Mount to the Base unit.
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.
MK:429 Lightweight Outdoor Microphone
Page 8
Guarantee
Cirrus Research plc offers a 12 month guarantee on all of their units. This covers all
parts and labour excepting only damage caused by the user. Because of the unique
fragility of microphones, only internal short or open circuits are accepted as faults and
not accident damage. The guarantee requires the user to return the unit to their nearest
authorised Cirrus Research plc Agent. This guarantee is in addition to any statutory
rights in your country.
Cirrus Research Offices
The addresses given below are the Cirrus Research plc offices. Cirrus Research plc also
have approved distributors and agents is many countries worldwide. For details of your
local representative, please contact Cirrus Research plc at the address below. Contact
details for Cirrus Research authorised distributors and agents are also available from the
Internet Web site at the address shown below.
Main Office
Cirrus Research plc
Acoustic House
Bridlington Road
Hunmanby
North Yorkshire
United Kingdom
YO14 0PH
Telephone: 01723 891655
Fax: 01723 891742
e-mail: [email protected]
Technical Support [email protected]
Web Site: www.cirrusresearch.co.uk
Germany
Cirrus Research Buro Dresden
Schlueterstrasse 29
01277 Dresden
Germany
Telephone: (+49) 351 316 0950
Fax: (+49) 351 316 0949
e-mail: Cirrus.Akustik@t-online.de
USA
Cirrus Research
1307-A South Euclid Street
Anaheim
CA 92802
USA
Telephone 714 535 8647
Fax 714 535 8649
/
