Chiayo GMC-10+ User manual

CHIAYO ELECTRONICS CO., LTD.
Operation manual
GMC-10+
GMC-10+(L)
10-Unit Conference Microphone Audio
Converter

1
GMC-10+/GMC-10+(L) 10-Unit Conference Microphone Audio Converter
Parts and functions
Advisory
1.The network cable Cat.5e / Cat.6 UTP has to meet TIA/EIA-568-B.2 standards with copper
wires of 24AWG-1/0.49A*4P (CM/UL).
2.To achieve best performance and stable functionality, it’s recommended to use standard
CHIAYO CAT.5e network cables which are available in 2M, 5M and 10M length.
Do not use cables of unknown origin because they will cause unexpected system
abnormalities.
3.The chairman unit GM-243C can be located anywhere in the loop.
4.This conference system may consist of up to 10 units with max two GM-243C chairman units.
5.To prevent feedback noise, please adjust the GAIN knob to control the sensitivity of the
microphone, and set a proper output volume on the amplifier or mixer before operating the
system.
6.If it’s necessary to DIY cables, be sure to examine them with RJ-45 cable tester until they are
no problem before installation.
Connecting GM-243 microphones
The input port can be connected with max 10 GM-243 units.
Max 10 units◄◄
Input port
Power indicator
Unbalanced audio output (Φ6.3mm)
Chairman-Delegate system switch
MIC/LINE output impedance switch

2
Instructions
Installation of GM-243 units for GM-243C chairman unit for GM-243S delegate unit
SCENARIO A
If system includes one or two GM-243C
chairman unit, slide the SYSTEM SWITCH of
the convertor to ‘C’position.
SCENARIO B
If the system includes no GM-243C chairman
unit, slide the SYSTEM SWITCH of the
convertor to ‘S’position
slide to C
slide to S
Audio output
¼” PHONE PLUG connector provides
unbalanced audio output signal from this jack to
the mixer/amplifier. Use an audio output cable
with ¼” PHONE PLUG connectors. Connect
one end from the unbalanced output jack of the
receiver, and the other end to the “LINE IN” or
“MIC IN” jack of the mixer/ amplifier.
Level switch setting
(1).When connecting to the LINE /AUX IN of a
mixer/amplifier, switch to “LINE” position.
DO NOT use the “MIC” position as they may
not deliver a sufficient high output level.
(2).When connecting to the “MIC IN” jack of a
mixer/amplifier, switch to “MIC” position.
Overload distortion may occur at the wrong
level position.

GMC-10+ amplifier

GMC-10+ amplifier
C
S
S S S
SSSSS
C C
S S S S S
S S S S S
LINE 1 LINE 2
MIC 1 MIC 2

GMC-10+/GMC-10+(L) 10-Unit Conference Microphone Audio Converter
RJ45 port locking of GMC-10+(L)
Port unlocking
1 2 3
Lock bar
4 5 6
7 8 9
Use finger to
push the lock bar
to the bottom Done!
1 2
Prepare to unlock
Lock bar
3 4 5
6 7 8
Push lock bar Locked!
CHIAYO ELECTRONICS CO., LTD.
Http://www.chiayo.com.tw｜Email: [e-mail]
Office: 30, Lane 27, Section 4, Jen-Ai Road, Taipei 10685, Taiwan
Tel: [phone]｜Fax: [phone]
Factory: 88, Chung-Hsiao Street 2, Chiayi 60080, Taiwan
Tel: [phone]｜Fax: [phone]I1477