User's Manual

Using Multiple Wireless Systems
The WPM900 system has 100 possible “channels” that are really different frequency hopping schemes.
Potential Sources of Interference
There are many potential sources of interference for your wireless system. Any electronic product that
contains digital circuitry including digital signal processors (reverb/multi-effects units), electronic keyboards,
digital lighting controllers, CD and DVD players, and computers, all emit RF energy that can adversely affect
the performance of your wireless system. It is always best to place the receiver as far away as possible from
these devices to minimize potential problems.
The WPM900 operates in the 900MHzISM band and other devices in that band may interfere. The spread
spectrum technique used in the WPM900 is very robust and should operate even in the presence of other
900MHz devices such as walkie-talkies, LANs, cordless phones, etc. in the area.
Battery Recommendations
The Lithium-Ion battery built into the WPM900 transmitter will work at full capacity for over 500 charge cycles.
If you notice lower than usual battery life over time, it may be time to replace the cell
Warnings
Do not use this product in or near water, i.e. near a bathtub, sink, or swimming pool.
Do not use this product in the vicinity of a gas leak or to report a gas leak.
4. TROUBLE SHOOTING GUIDE
Problem Possible Causes Solutions
No audio and no In-Use LED
light on the receiver when
Transmitter is on and In-use
Receiver is not powered
Make sure that the power
supply is properly connected
Transmitter and receiver not
synchronized
Turn on transmitter and place
In recharge cradle. Press the
In-use button until the In-Use
LEDs flash 3 and the fair will
be synched
No(or low) Audio with all in-Use
LEDs solid green
Lapel Microphone not connected
or positioned properly
Check the mic. connection and
Placement of the microphone
Receiver audio output cable is
Damaged or disconnected
Connect, repair or replace
cable
Interference
Another 900MHzdevice in the
Area causing interference
Push the In-Use button and
the PWW24 will automatically
select a clear channel. If the
interference is too strong,
this may not completely
eliminate it.
Shot range or drop-outs
RF reflective metal obstacles
between the transmitter and
receiver
Move the obstacles, or
reposition the receiver if
possible
In-Use LED on bodypack
flashes red and two tone
beep sounds
Transmitter is out of range Move closer to the receiver
Variable sync times or failure
to synch
Synch process run more than
one time with same pair
Power cycle the base station
and Synch one time.