Troubleshooting - Lectrosonics UCR30 Operating Instructions Manual

UCR301
POWER SUPPLY AND FUSE
LCD display not active
PILOT TONE SQUELCH
PILOT indicator is solid "P", but no sound
PILOT "P" keeps flashing when transmitter
audio switch is turned on
Noise on audio and Pilot indicator is "b"
ANTENNAS AND RF SIGNAL STRENGTH
RF Level is weak
No RF Signal
AUDIO SIGNAL QUALITY
Poor signal to noise ratio
Distortion
16

TROUBLESHOOTING

• 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.
• Battery may be low. Try a fresh battery
• Audio output cable bad or disconnected.
• Audio Output level set too low. Use the built-in test tone to verify
levels.
• It takes several seconds for the relay to actuate the PILOT. Turn
on the transmitter power (and the audio switch on some models)
and wait 3 to 5 seconds for the "P" to indicate steadily.
• Transmitter and receiver not on same frequency.
• The pilot tone bypass has been activated. Hold MENU and press
UP to reset (works only from the Main Window).
The PILOT indicator on the front panel shows as a solid "P" to indicate that the
audio has been turned on at the transmitter, and that the audio output on the
receiver is enabled. When the "P" is on, the audio is enabled. If the "P" is
flashing the pilot tone is not detected and the audio will be muted (squelched).
When the pilot tone is bypassed, the "P" icon changes to a "b" shape.
• Receiver may need to be moved or reoriented.
• Transmitter antenna may be defective or poorly connected
• Improper length of antenna, or wrong antenna on transmitter.
(UHF whip antennas are generally about 3 to 5 inches long. UHF
helical antennas may be shorter, but are often less efficient.
• Make certain frequency switches on transmitter match the receiver
frequency setting.
• Check battery in transmitter
• 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 UCR301 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 UCR301 and lowering the
input gain on the device the UCR301 is feeding.
• 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 UCR301 is feeding.
Lower the output level of the UCR301.
Professional Audio Products Since 1971
Note