Lectrosonics UCR401 User Manual download pdf (Page 25)

UHF Digital Hybrid Wireless

Receiver

Rio Rancho, NM

Symptom Possible Cause

ANTENNAS AND RF SIGNAL STRENGTH

RF Level is weak Receiver may need to be moved or reoriented.

Antenna on transmitter or receiver may be defective or poorly

connected - double check antennas.

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 UCR401 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 UCR401 and lowering the

input gain on the device the UCR401 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 UCR401 is feeding.

Lower the output level of the UCR401.

Bad frequency response or generally poor audio quality

Ensure the receiver is set to the compatibility mode that matches

the transmitter in use.

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Lectrosonics UCR401 User Manual Page 25