2
TROUBLESHOOTING
PROBLEM INDICATOR SOLUTION
No sound Red transmitter indicator is not flash Slide transmitter POWER ON/OFF
switch to ON position. Make sure
battery is inserted properly, observing
battery (+ / -). If battery is inserted
properly, replace with fresh battery.
No sound Red transmitter indicator is flash. Slide transmitter MUTE/ON switch to
ON position.
No sound Red receiver indicator POWER light
off.
Make sure AC adapter is securely
plugged into electrical outlet and into
DC input connector.
Make sure AC electrical outlet works
and supplies proper voltage.
No sound Receiver signal indicators A/B lights
glowing.
Turn up receiver volume control.
Confirm that the output connections
from the receiver to the external
equipment are secure.
No sound Receiver signal indicators A/B lights
off. Transmitter and receiver POWER
light glowing.
Confirm transmitters and receivers
frequencies match. Move transmitter
closer to receiver.
Sound level differs from level of
a cabled instrument.
Receiver signal indicators A/B lights
glowing.
Adjust transmitter gain level to
compessary.
Adjust receiver volume as necessary.
Distortion level increases
gradually
Receiver signal indicators A/B lights
and transmitter LOW BATTERY light
glowing
Replace transmitter battery
Bursts of noise or other audible
radio signals present.
Signal indicators A/B/ lights on. Identify potential sources of
interferences (other RF-sources) and
turn off, remove or use a wireless
system operating on a different
frequency.
Momentary loss of sound as
transmitter is moved around
performing area.
Receiver signal indicator A/B lights of
when sound is lost
Reposition receiver and perform walk-
through test again. If audio dropouts
persist, mark “dead” spots and avoid
them during performance.
TECHNICAL SPECIFICATION
WM511 WM512H WM512C WM512
Ref.nr: 179.229 179.220 179.223 179.226
Frequency range 200.175Mhz
200.175Mhz
201.400Mhz
200.175Mhz
201.400Mhz
200.175Mhz
201.400Mhz
Frequency
response
40Hz-20kHz 40Hz-20kHz 40Hz-20kHz 40Hz-20kHz
Signal/Noise ratio > 85dB > 85dB > 85dB > 85dB
Class 2 2 2 2
Rated voltage AC220~240V 50Hz AC220~240V 50Hz AC220~240V 50Hz AC220~240V 50Hz
Adapter 13-15V DC / 500mA 13-15V DC / 500mA 13-15V DC / 500mA 13-15V DC / 500mA
Dimensions 210 x 145 x 42 mm 210 x 145 x 42 mm 210 x 145 x 42 mm 210 x 145 x 42 mm
Bodypack PT-218 Handheld HT-218
Frequency range
201.400Mhz /
200.175Mhz
200.175Mhz
Battery 2x 1.5V AA Battery 2x 1.5V AA Battery
Signal/Noise ratio >10dBm >10dBm
Class 2 2
Dimensions 100 x 65 x 30 mm 238 x 50 x 50 mm
Class II product for use in Frequency band 195.000-201.900MHz.
The specifications are typical. The actual values can slightly change from one unit to the other. Specifications can be changed
without prior notice.
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