Lectrosonics UDR200b - Manual (Page 9)

Wireless Diversity Receiver
INSTALLATION AND OPERATING INSTRUCTIONS
1) Locate a suitable operating location where the receiver will
not be subjected to extreme temperature variations and
possible bumps and drops. Try to route all wiring so it will
not cross walkways or isles.
2) Connect the power. For AC operation, connect the power
cord to the AC input jack on the rear panel and plug the
other end into a suitable electrical outlet. If 12 to 26V DC
operation
/ battery backup is desired, a power cord will need
to be fabricated. Use a standard 4-pin female XLR con­
nector for the receiver end. Pin 4 is positive and pin 1 is
ground. Make the length of the DC cable long enough to
suit your installation and prepare and connect the source
end of the cable.
3) Attach the antenna cables to the BNC jacks on the rear of
the UDR200B and place the antennas. Best performance
will be obtained if the antennas are placed at least 3 feet
from each other. Try to mount them as high as possible
with a direct line of sight path to the transmitter if possible.
4) Set the Audio Output level control to minimum (CCW) and
connect the Audio Output XLR jack to the mixer input. Pins
2 and 3 of the XLR jack are HI and LO and can be re­
versed with the Phase switch, pin 1 is common.
5) Preset the following controls:
MODE (front panel) to DIVERSITY
MONITOR (front panel) to minimum (CCW)
PHASE (rear panel) to 0
AUDIO OUTPUT (rear panel) to -40 (full CCW)
6) Turn the unit on with the front panel POWER switch and
check to see that the PILOT indicator is blinking indicating
that the pilot tone is not being received (be sure the trans­
mitter is turned off.)
7) Set the operating frequency on the transmitter and receiver.
(See “Using the LED Information Display” below.)
8) Turn on the transmitter and adjust the transmitter gain.
This is the most important step
in the setup procedure!
Adjust the transmitter so that voice peaks will light the 0
LED on the receiver front panel Transmitter Audio Level dB
strip. The red "0" or LIMIT LED on the transmitter may
flash occasionally. This is normal but it should not happen
continuously. See your transmitter manual (Operating
Instructions section) for specific directions on how to adjust
the gain of your particular transmitter.
9) After adjusting the transmitter gain, set the rear panel
Audio Output level control to the desired level. The -40
setting is approximately equal to 10mV, the 0 position will
give 0.775VRMS, and the +15 setting will allow up to 4.4
VRMS. This setting will depend on the requirements of
your system.
10) Operate the system and readjust the receiver output level
as required for your equipment. The input levels on differ­
ent VCR’s and PA equipment vary, which may require that
you set the Audio Output control in an intermediate posi­
tion. Try different settings and listen to the results. If the
output of the receiver is too high, you may hear distortion
or a loss of the natural dynamics of the audio signal. If the
output is too low, you may hear steady noise (hiss) along
with the audio.
Note: If two or more UDR200B receivers are used together
and the LecNet computer interface is used, a unique
LecNet address must be entered into each receiver. See
page 10 under
Set LecNet Address.
Rio Rancho, NM – USA 9