Lectrosonics Quadra - Manual (Page 28)

QUADRA
Troubleshooting Guide
Symptom Cause Action
Transmitter and receiver on, receiver
shows strong RF signal, but no blue RF
LED on receiver and no audio
Transmitter and receiver are not both using
the same channel setup
Decide which channel setup (2-channel,
4-channel, or split modes) you plan to use
and set both the transmitter and receiver
the same. Remember that for split modes
to work on the receiver, the transmitter
must be set to 4-channel mode.
Low audio level at receiver with analog
inputs at transmitter
Transmitter audio trims not set correctly or
overall send level from the console is too
low
Reduce attentuation (increase signal level)
at the transmitter by using the Audio Trim
menu. Input trims are set to -20 dB at the
factory. Or, increase the send level or mix
level from the console.
Low audio level at receiver with digital
inputs at transmitter
Overall send level too low at the monitor
console
Increase the send level or mix level to the
digital output buss on the mixing console.
The audio at the receiver is distorted, using
analog signals at the transmitter
The transmitter is being overdriven at the
inputs
Reduce the level of the sends from the
mixing console, or increase the amount of
attenuation at the transmitter by using the
Audio Trim menu page.
The audio at the receiver is distorted, using
digital signals at the transmitter
The mix is being clipped before it gets to
the transmitter
Reduce the overall level of your mix at the
console before sending to the transmitter.
The audio sounds very “bright” at the
receiver but not when monitoring the same
channels at the transmitter
HF boost is engaged at the receiver Check the settings for the HF boost in the
receiver menu. Re-set to taste. Most often,
no HF boost is needed since the Quadra
system audio response extends to 20 kHz.
I hear channels 3 and 4 at the receiver, but
not 1 and 2
Split 3-4 mode is engaged at the receiver Change the channel setup to 4-channel
mode using the Chan. Setup page in the
receiver.
Audio channels are missing at the receiver
(you are expecting four channels but only
receive 2)
Incorrect Channel Setup Decide which channel setup (2-channel,
4-channel, or Split modes) you plan to use
and set both the transmitter and receiver
the same. Remember that for split modes
to work on the receiver, the transmitter
must be set to 4-channel mode.
One or more of the audio channels at the
receiver are only heard in one ear
Stereo balance and/or Panning setups are
incorrect
Check the panning menu on the receiver
and adjust the balance and/or pan controls
to place the appropriate channels where
you would like them in the stereo field.
One or more of the audio channels at the
receiver are only heard in one ear
Audio only being sent to one channel of the
transmitter.
Check the connections between the mixing
console and the transmitter. If both (or
multiple) channels are connected properly,
check to make sure the mix from the
console has information on all channels.
The system is exhibiting poor operating
range
An interfering signal is present Choose an operating frequency that does
not already have a strong signal present.
See Tuning, pp. 13 and 20.
The system is exhibiting poor operating
range
The receiver antennas are contacting the
performer’s body or another conductive
surface
Place the receiver so that the antennas
are not obstructed by metallic fabric nor
contacting the wearer’s skin directly.
The antennas should not be folded or
“scrunched”. Do not place the receiver in
the wearer’s pocket.
The system is exhibiting poor operating
range
The transmitter antenna is not connected
properly or signal is being filtered
improperly
Check your transmitter connection/s,
and ensure that if the signal is passing
through any other type of device that the
device does not filter out the 902-928 MHz
frequencies.
Receiver battery life seems very short Incorrect battery type, poorly charged
batteries or partly discharged batteries
Please use only fresh, known-quality
alkaline, lithium, or freshly charged
rechargeable batteries.You should get at
least 6 hours operating time with name-
brand alkaline AA batteries, and more with
lithium or good rechargeable batteries.
The LCD is dark and impossible to read LCD has “timed out” Push any button to turn on the LCD
backlight. Depending on how it is set in
the menu, it will time out in 30 seconds, 5
minutes, or never.
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