LD Systems U500 IEM Serie Manuel D'utilisation page 16

TROUBLESHOOTING
PROBLEM
No audio signal or level
too low
Distortion and
interference
Distorted sound
RECOMMENDATIONS FOR ERROR PREVENTION
• When using a radio transmitter and a radio receiver on your body at the same time, position the two devices as far apart
from each other as possible.
• Do not install the radio receiver and radio transmitter together in a rack, and position a receiver rack as far away
from a transmitter rack as possible.
• When rack-mounting transmitters or receivers, maintain at least half a height unit between the two.
• Use separate power supplies for transmitter and receiver and do not use the same power supply for wireless systems
made by different manufacturers.
16
DISPLAY
Receiver: Reception is not indicated by RF LED.
Receiver: Display lighting is switched off
Receiver: Reception is not indicated by RF LED.
Transmitter: Device is switched on. Audio signal
is available.
Receiver: Reception is indicated by RF LED.
Receiver: Reception is indicated by RF LED.
Receiver: "LOW BATTERY" is displayed.
Receiver: Peak is shown AF PK in the receiver and
transmitter display.
SOLUTION
Check if the transmitter is turned on.
Check that the receiver is switched on and that the
battery charge status is suf昀椀cient.
Check that the radio frequency of the transmitter and
receiver is the same.
Check the transmit power.
Reduce the distance between transmitter and receiver.
Make sure that there is a direct line of sight between
transmitter and receiver.
Make sure that the antennas of transmitter and receiver
are correctly connected, not covered and not kinked.
Reduce the level of noise reduction (SQUELCH)
Check whether an audio signal is present at the
transmitter.
If necessary, increase the signal level of the playback
device or check the GAIN setting in the transmitter.
Remove possible sources of interference (digital devices,
other radio systems).
Increase the level of noise reduction (SQUELCH)
at the receiver.
Check the headphone output of the transmitter.
Make sure that the available signal is "clean".
If necessary, reduce the signal level of the playback
device or lower the audio level GAIN in the transmitter.