Troubleshooting - Lectrosonics DSR4 Instruction Manual

DSR4

Troubleshooting

Symptom
INITIAL POWER ON
Display not active or lit.
ANTENNAS AND RF SIGNAL STRENGTH
RF Level is weak.
No RF Signal
AUDIO SIGNAL QUALITY
Poor signal to noise ratio
Distortion
Bad frequency response or
generally poor audio quality.
DISPLAY NOT ACTIVE OR LIT
24
Possible Cause
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.
Display has timed out. Press any button to revive.
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.
Make certain frequency settings on transmitter match the receiver
frequency settings.
Ensure transmitter is in transmit mode.
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
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
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
Lower the output level of the
Ensure the receiver is set to the compatibility mode that matches
the transmitter in use.
Ensure that the unit has the correct power supply and is connected.
and see if the noise lowers
DSR4
.
DSR4
is feeding.
DSR4
.
DSR4
LECTROSONICS, INC.