Lectrosonics UCR200d User Manual download pdf (Page 11)

UHF Wireless Diversity Receiver

TROUBLESHOOTING

POWER SUPPLY AND FUSE

LEDs not lit or dimly lit

• External power supply disconnected or inadequate.

• Main power supply fuse tripped. Turn the receiver off,

remove the cause of the overload and turn the receiver

back on.

• Wrong polarity power source. The external DC in

requires POSITIVE to be on the center pin.

PILOT TONE SQUELCH

The PILOT indicator lamp on the front panel glows green to

indicate that the audio has been turned on at the transmitter, and

that the audio output on the receiver is enabled. When the lamp is

on, the audio is enabled. When the lamp is off, the audio is muted.

PILOT lamp on, but no sound

• Audio output cable bad or disconnected.

• Audio Output level set too low.

PILOT lamp does not come on when transmitter audio

switch is turned on

• It takes several seconds for the relay to actuate the

PILOT lamp. Turn the transmitter power and audio

switches on and wait 3 to 5 seconds for the lamp to come

on.

Normal audio on output but the Mod meter on the front

panel is not working.

• The Power switch may be in the “ON (Pilot Disable)”

position. This front panel switch should be in the right-

most position.

ANTENNAS AND RF SIGNAL STRENGTH

RF Level is weak.

• Antenna is disconnected or there is a bad connection

• Antenna may need to be moved or re-oriented

• Improper length of antenna, or wrong antenna. UHF

whip antennas are generally about 3 to 5 inches long.

UHF helical antennas may be shorter, but are often less

efficient.

AUDIO SIGNAL QUALITY

Poor signal to noise ratio

• Transmitter gain set too low

• Noise may not be in wireless system. Mute the audio

signal at the transmitter and see if 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 UCR200D

rear panel 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

UCR200D and lowering the input gain on the device the

UCR200D is feeding.

Distortion

• Transmitter input gain too high. Check and/or re-adjust

input gain on transmitter according to the LEDs on the

transmitter and then verify the setting with the transmitter

audio level LED strip on the UCR200D front panel.

• Audio output level too high for the device the UCR200D

is feeding. Lower the output level of the UCR200D.

Rio Rancho, NM – USA

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Lectrosonics UCR200d User Manual Page 11

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