Lectrosonics SRa5P/E01 Instruction Manual page 24

SRa5P/E01 and SRa/E01 Dual Receivers
Symptom
Pilot Tone Indicator not present but receiving audio
NOTE: In the 400 Series, the PILOT indicator on the LCD 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).
In the other compatibility modes, no pilot tone is used and the "P" is never displayed. Audio is present whenever the
receiver detects a sufficiently strong signal.
Regardless of the compatibility mode, activating the "pilot tone bypass" causes a lowercase "b" to appear on the LCD
main window and forcing the squelch to open and deliver audio. When no matching transmitter is turned on, loud noise
will be present at the receiver output.
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
24
Possible Cause
Receiver is set to a compatibility mode that doesn't use Pilot Tone.
Check that receiver compatibility mode matches the transmitter in use
as any sufficiently strong signal can unsquelch the receiver in this
mode, compatible or not.
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.
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 SRa5P 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 SRa5P and lowering the
input gain on the device the SRa5P 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 SRa5P is feeding.
Lower the output level of the SRa5P.
Ensure the receiver is set to the compatibility mode that matches
the transmitter in use.
LECTROSONICS, INC.