Lectrosonics Quadra User Manual download pdf (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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Lectrosonics Quadra User Manual Page 28

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