Shure QLXD2L50 Manual De Usuario

19

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Troubleshooting

No Sound

Power, Cables, or Radio Frequency

Faint sound or distortion

Gain, Cables, Reducing Interference or Radio Frequency

Lack of range, unwanted noise bursts, or dropouts

RF

Cannot turn transmitter off or change frequency settings, or can't program 

receiver

Interface locks

Make sure that the receiver and transmitter are receiving sufficient volt-

age. Check the battery indicators. Replace or recharge the batteries if 

necessary.

Adjust the system gain on the front of the receiver. Ensure the mic/line 

switch setting (XLR output only) on the back of the receiver corresponds 

to the input of the mixing console, amplifier, or processor.

Check that all cables and connectors are fully engaged or locked into 

position. Inspect cables for damage. Replace if necessary.

The transmitter and the receiver can be locked to prevent accidental or 

unauthorized changes. If a locked control is accessed, the lock icon on 

the display will flash. Follow the instructions to unlock the receiver or 

transmitter.

Paired transmitters and receivers must have the same firmware version 

installed to ensure consistent operation. See Firmware Updates topic for 

firmware update procedure.

The blue RF LED will illuminate when a linked transmitter is within range 

of the receiver. Measure the transmitter range before a performance to 

avoid operating beyond the specified transmitter range.
The RF meter bars indicate amount of RF power being received. This 

signal could be from the transmitter, or it could be from an interfering 

source, such as a television broadcast. If the meter shows a signal 

level when the transmitter is off, then that channel may have interfer-

ence. Check the surrounding area for sources of interference or change 

the receiver to a clear frequency.
A red RF LED indicates RF overload. Avoid operating multiple systems in 

close proximity.

•  Perform a Scan and Sync to ensure the transmitter and receiver are 

set to the same channel or frequency

•  Look at the label on the transmitter and receiver to make sure they are 

in the same band (G50, J50, L50, etc...).

•  Perform a scan to find the best open frequency. Perform an IR sync to 

transfer the settings to the transmitter.

•  For multiple systems, make sure that each receiver is assigned to a 

unique channel. Interference will occur if two receivers are set to the 

same channel.

•  Maintain a line of sight between transmitter and receiver antennas.
•  Move receiver antennas away from metal objects or other sources 

of RF interference (such as CD players, computers, digital effects, 

network switches, network cables and Personal Stereo Monitor (PSM) 

wireless systems).

•  Eliminate RF overload (see below).

•  Increase transmitter RF power level.
•  Use an active directional antenna, antenna distribution system, or 

other antenna accessory to increase RF range.

If the RF OL appears on the RF meter, try the following: 

•  Reduce the transmitter RF power level
•  Move the transmitter further away from the receiver—at least 6 m (20 

ft)

•  If you are using active antennas, reduce antenna or amplifier gain.
•  Use omnidirectional antennas