Lectrosonics UCR310 User Manual download pdf (Page 7)

UCR310

UHF Wireless Diversity Receiver

REAR PANEL CONTROLS AND FUNCTIONS

DC IN JACK

The UCR310 can be powered from external DC applied directly to

this jack (see Specifications and Features section for allowed volt-

ages), or from the supplied CH20 adapter. The UCR310 is protected

from reverse polarity conditions which prevents damage if a posi-

tive ground power source is applied. The center pin of this jack is

POSITIVE. This power connector is threaded to allow the plug to

be locked to prevent accidental pull-out.

AUDIO OUTPUT XLR JACK

This jack is a standard 3 pin XLR connector. For balanced applica-

tions, Audio High is on pin 2, audio Low is on pin 3, and audio

Common is pin 1. For unbalanced use, the signal is developed

between pin 2 (Audio High) and pin 1 (Audio Common or Ground.)

It’s not necessary or desirable to ground pin 3. (The output is

balanced and center tapped.)

AUDIO OUTPUT RANGE SWITCH

The audio output range switch controls the range of adjustment of

the front panel Audio Output control. In the -20 position the

adjustment range is from -50dBm to -20dBm, the 0 position allows

an adjustment from -30dBm to 0dBm and the fixed position sets the

audio output to a fixed +8dBm (the front panel control has no effect

when the switch is in this position).

BATTERY RELEASE

To release the battery magazine, slide the battery release latch

away from the audio output jack. If batteries are already inside, the

force of the springs will push the magazine clear. Slide the maga-

zine off. After replacing the batteries, slide the magazine back into

place making sure the latch engages securely.

FREQUENCY ADJUSTMENT SWITCHES

To gain access to these switches, slide the access door sideways

with a fingernail. These two rotary switches change frequency of

the receiver. The frequency range (block) of the unit is laser

engraved on this switch cover.

ADJUSTING THE RECEIVER FREQUENCY

If you are experiencing interference from another signal on your

frequency, you may want to change the operating frequency of your

system. The left switch changes the operating frequency in coarse

steps and the right switch changes it fine steps. If you are experi-

encing interference, change the operating frequency in fine steps to

find a clear channel. If it is not possible to find a clear channel

using the FINE switch, return it to its original position and change

the COARSE switch by one click then try the FINE switch again.

Important - make certain that the switches on the transmitter are

set to the same position. If not the system will not be on matched

frequencies and will not work. Transmitter and receiver must also

be on the same block.

9-16VDC

0–20 +8

AUDIO

OUT

BATTERY

RELEASE

COARSE FINE

Rio Rancho, NM – USA

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Lectrosonics UCR310 User Manual Page 7

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