-2-
Transducer Principle of the Transmitters
Frequency
Modulation
Circuit
ALC Audio
Amplifier
Quartz
Crystal
Circuit
Dynamic Compression
Noise Elimination Circuit
High Frequency
Power Amplifier
Circuit
Pre-emphasis
Network
Regulated
Power Circuit
1. The On/Off switch of the microphone is set
to middle position and the microphone is
muted.
2. The volume control on receiver is set at
minimum.
1. The antennas are not pulled out properly.
2. The battery power are low.
3. The receiver is put at dead-point or next to
electromagnetic field.
1. The battery power is low.
2. Other equipment is operating on the same
radio frequency or higher frequency.
The power adaptor is not well
connected.
Causes
-5-
Indicator
“
RF
”
lights but no sound
when speaking
The indicator doesn’t light when
receiver power switch is turned on.
The operating range is short and the
signal is unstable.
Trouble Shooting
Troubles
Distortion or noise
Receiver
POWER
POWER
VOLUME
VOLUME
VOLUME
VOLUME
CHANNEL B
CHANNEL B
CHANNEL A
CHANNEL A
HIGH VHF DUAL CHANNEL
WIRELESS MICROPHONE
WIRELESS MICROPHONE
ON
ON
OFF
OFF
5
5
0
0
10
10
5
5
0
0
10
10
WM-210
0 -10
ANT.B
OUT B
OUT A
0-400mv
Mix out only cabl
CAUTION!
RISK OF ELECRONIC SHOCK
DO NOT OPEN
DC 12V
ANT.A
①
Frequency:174MHz-216MHz
-
+
1. Turn on the power switch and the indicator lights.
2. Pull out the two antennas A & B and mount them perpendicular on
the receiver.
3. Audio output connection: if mixed output is needed, please connect
1pc audio output cable with either the audio output socket; if separate
output is needed, connect both of the audio cable output cables
with two audio output sockets.
