System Setup Steps - Lectrosonics R400A Instruction Manual

R400A

System Setup Steps

1. Connect the power cord from the power supply
to the Power Input Jack.
2. Attach the antennas or antenna cables BNC con-
nectors.
3. Turn the power on with the PREV MENU/POW-
ER button. The screen will display the model
number, firmware revision and frequency block
during the boot sequence.
Lectrosonics
R400A VXX where VXX is the current firmware
version installed
Block XX where XX is the frequency tuning
range block number
After the Power Up Sequence is displayed, the
Main Window appears and the receiver is ready
for operation.
4. Check that the receiver and transmitter are set to
the same Compatibility Mode
5. Find a clear operating frequency using the scan-
ning or Smart Tune
to the same frequency.
6. Turn the transmitter on and verify that an RF
signal is indicated on the LCD.
7. Connect an audio cable to the appropriate audio
output jack/s.
8. Adjust the transmitter gain (refer to the transmit-
ter manual for details). Set the gain so that signal
peaks indicate full level on both the receiver and
transmitter at the same time.
NOTE: Turn the level down on the sound system
or recorder while adjusting the transmitter gain.
8
feature. Set the transmitter
TM
9. Adjust the receiver output level to match the
sound system or recorder. Turn the receiver
output all the way down. Set the input level/gain
control on the sound system or recorder at a
comfortable mid-position. As the wireless system
is operating, gradually turn up the output level of
the receiver until adequate level is achieved. If
the receiver output is turned all the way up and
it is not enough, then turn up the level on the
sound system or recorder.
NOTE: There is very little to no difference in
signal to noise ratio in the wireless system across
the receiver output adjustment range. The output
control on the receiver is simply an attenuator.
10. A more accurate way to adjust the receiver out-
put is to use the built in tone generator. The tone
is presented at the receiver output at a specific
level for a precise match to the sound system or
the recorder. The level of the tone is the same as
the peak audio output will be during operation.
For example:
• +00 dBu to +5 dBu for line level
• -50 dBu to -40 dBu as dynamic mic level
• -25 dBu to -30 dBu as electret mic level
With the tone running, the input levels on the
sound system or recorder can be accurately set
for the loudest peak that will occur.
NOTE: Set the receiver output as high as
possible without overloading the device being
fed the signal, to minimize the amount of gain
needed in that device and achieve the maximum
signal to noise ratio from the overall signal chain.
11. If desired, access the LockSet menu to lock the
R400A front panel controls to prevent inadver-
tently modifying the receiver settings during
operation.
LECTROSONICS, INC.