Lectrosonics UCR205d User Manual download pdf (Page 9)

UHF Wireless Diversity Receiver

INSTALLATION AND OPERATING INSTRUCTIONS

1. Connect the power cord.

2. Attach the antennas.

3. Connect the audio cable to the audio output XLR.

4. Set the front panel Audio Output Level control to minimum and set the Power switch to ON (right position.) Check to see that

the front panel Power LED lights up.

5. Adjust the transmitter gain. THIS IS PERHAPS THE MOST IMPORTANT STEP IN THE SET UP PROCEDURE. See your

transmitter manual (Operating Instructions section) for details on how to adjust the transmitter gain. In general, adjust the

transmitter gain so that the voice peaks will cause the 0dB LED on the front of the receiver to light on the loudest peak audio

levels. This will result in the best possible signal to noise ratio for the system without causing overload distortion.

6. Adjust the Audio Output control according to the type of input on your equipment. The Range switch sets the adjustment range

of the front panel Audio Output control and has three positions.

Low: The adjustment range is from –50dBm to –20dBm.

Mid: Allows an adjustment from –30dBm to 0dBm

High: Sets the audio output to a fixed +8dBm with no front panel control.

The input levels of different cameras, VCRs, and PA equipment vary, which may require that you set the Audio Output control

to an intermediate position. 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. The UCR205D audio output is designed to drive any audio input device from microphone level to +8dBm line

level.

Note:

When using the +8 dBm HI position of the output range switch, do not ground pin 2 or pin 3 of the XLR output! The output impedance

is only 50 Ohms (unbalanced) when in the HI position and this is not enough to isolate the audio amplifier from a short to ground.

Distortion will result.

AMP

MONITOR

LEVEL

2 (Hi)

1 (Common or Ground)

MID

511

MUTE

RELAY

MID

AUDIO

AMP

MONITOR

OUT

XLR

OUT

OUTPUT LEVEL ADJUST

AND RANGE SWITCH

3 (Lo)

UCR205D Simplified Audio Output Circuit

UCR205D REPLACEMENT PARTS and ACCESSORIES

Part No. Description

UHF Rubber Duck Antenna, straight connector

32251 Velcro mounting strips

35753 Zippered, padded vinyl system pouch

PS200 Power supply cable locking plug on one end and a

Hirose plug on the other for hookup to a camera.

21586 Power supply cable with locking plug on one end and pigtail leads on the other

Rio Rancho, NM – USA

1 2 3 4 5 6 7 8 9 10 11 12 13 14

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Lectrosonics UCR205d User Manual Page 9

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