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The EX-507XR Lapel Microphone
The PRO-XR system comes with a high quality lapel microphone. The lapel mic is
omni-directional and powered by the transmitter (via plug-in power) and uses a standard,
unbalanced TRS 3.5 mm male connector so it may be used with some other wireless
systems if desired. It comes with a lapel clip and attached windscreen.
To use the EX-507XR with the PRO-XR system, simply plug it into the Microphone Input
located on the top of the transmitter. For best results, clip the lapel microphone to your
subject's clothing at a distance of 3 – 6 inches away from their mouth.
Pairing The Transmitter and Receiver
The transmitter (TX) and receiver (RX) of each PRO-XR system are paired at the factory and are ready to use out
of the box. However, there may be some cases in which you will have to manually pair the units with each other
again. If the RX's Signal Indicator light is blinking persistently, this would indicate that the TX and RX units have lost
sync and need to be paired again. This pairing procedure would also be necessary if you have replaced either of
your original TX or RX units and are using it for the first time, or if you want to use additional RX units with your TX.
1. Start with both the TX and RX units powered off. Note that pairing will not be possible if either unit is low on
battery (red power indicator light).
2. On both TX and RX units simultaneously: Press and Hold the power button for five seconds to enter pairing
mode. During this time the units will turn on. Continue holding the power buttons until the RX and TX both
show a solid RED Signal Indicator light. (TX will take longer than RX).
3. Release the power buttons. The Signal Indicator light on both units will now be flashing RED. Wait until the
RX's Signal Indicator light turns to flashing GREEN. This may happen almost immediately after releasing the
power button or it may take a few seconds.
4. Press and release both power buttons once more to lock the pairing. The Signal Indicator lights on both units
should turn to SOLID GREEN within a few seconds.
If your first pairing attempt is unsuccessful, please turn off the units and try again. Once the RX and TX units are
paired they will remain so for subsequent uses. Pairing will be automatic upon both units being powered on.
To pair multiple RXs to one TX, complete steps 1-4 for each RX. When all units are turned on, the TX will
auto-pair with all RXs. It is not possible to pair multiple TXs to one RX.
Setting The Transmission Power
The PRO-XR transmitter (TX) has the ability to broadcast its signal at 3 different strengths: 20 mW, 50 mW and
100 mW. The default is set to 20 mW and the TX will always start from the default each time it is powered on. To
change the transmission power, press and hold for 1 second the Transmission Power Button. Each time this is
done the Signal Indicator light will change color to show the new setting in effect, as follows:
Signal Indicator Light : GREEN = 20 mW / ORANGE = 50 mW / RED = 100 mW
In most scenarios, 20 mW will be sufficient for a reliable connection. However, increasing transmission power may
improve performance when certain environmental challenges are present. Some examples include:
1. In areas where there is an overcrowding of Wi-Fi and other 2.4 GHz signals (hotels, convention halls, sporting
events, etc.)
2. When line-of-sight between receiver and transmitter is obstructed by large objects such as walls, buildings,
vehicles, etc., or by crowds of people.
3. When operating the system at extreme distances (100 feet and beyond).
Some important things to note about Transmission Power:
1. Using the 50 mW and 100 mW settings may actually be detrimental to performance at short distances (less
than 5 feet).
2. Using the 50 mW and 100 mW settings will drain the transmitter's battery more quickly (see specifications).
3. While 2.4 GHz wireless is legal for unlicensed use in almost every country, not all countries allow for
transmission powers above 20 mW. It is recommended before traveling with the PRO-XR that you check the
destination country's wireless regulations. Transmission power of up to 100 mW is allowed in the United
States, Canada and EU countries.
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