User's Manual

UCR411A
LECTROSONICS, INC.
24
Symptom Possible Cause
ANTENNAS AND RF SIGNAL STRENGTH
RF Level is weak. Receiver may need to be moved or reoriented.
Antenna on transmitter may be defective or poorly connected -
double check antenna on transmitter.
Improper length of antenna, or wrong antenna on transmitter or
receiver. UHF whip antennas are generally about 3 to 5 inches long.
UHF helical antennas may be shorter, but are often less efficient.
No RF Signal Make certain frequency switches on transmitter match the receiver
frequency setting.
Check battery in transmitter.
AUDIO SIGNAL QUALITY
Poor signal to noise ratio Transmitter gain set too low.
The noise may not be in the wireless system. Turn the transmitter
audio gain all the way down and see if the noise remains. If the
noise remains, then turn the power off at the transmitter and see if it
remains. If the noise is still present, then the problem is not in the
transmitter.
If noise is still present when the transmitter is turned off, try lowering
the audio output level on the UCR411A and see if the noise lowers
correspondingly. If the noise remains, the problem is not in the
receiver.
Receiver output is too low for the input of the device it is feeding.
Try increasing the output level of the UCR411A and lowering the
input gain on the device the UCR411A is feeding.
Distortion Transmitter input gain too high. Check and/or readjust input gain on
transmitter according to the LEDs on the transmitter and then verify
the setting with the audio meter in the main window.
Audio output level too high for the device the UCR411A is feeding.
Lower the output level of the UCR411A.
Bad frequency response or generally poor audio quality.
Ensure the receiver is set to the compatibility mode that matches
the transmitter in use.