Lectrosonics UCR100 User Manual download pdf (Page 5)

Compact Receiver

Rio Rancho, NM

Modulation LEDs

The two modulation LED’s indicate the modulation

(audio level) of the incoming signal and can be used for

proper adjustment of the transmitter’s mic or audio level.

The -20 LED glows when the transmitter modulation is

at a high enough level to produce a good audio signal-

to-noise ratio. It will normally ﬂicker, or stay lit as you

speak into the microphone. The 0 dB lamp indicates

a “peak,” showing that the transmitter modulation is at

maximum. Constant lighting of the 0 dB LED indicates

that the audio gain in the transmitter may be set too

high. It is normal and desirable that you see an occa-

sional ﬂicker of the 0 dB lamp in typical use.

Power ON/OFF Switch

Turns the receiver on or off.

Power LED

The Power LED glows when the power switch is in the

ON position and the battery is good. The power LED

starts blinking when the battery is becoming exhausted

and needs replacement. If the LED does not light

up when the switch is turned on or during operation,

replace the battery. In normal operation a new alkaline

battery will operate the receiver approximately 5 hours

before the LED starts blinking and will continue operat-

ing for approximately another 3 hours before the LED

goes off. At that point the unit and the other LED’s

will continue operating for another hour or so but with

some degradation in performance. During the low bat-

tery blinking period the LED on time decreases as the

battery becomes depleated. See the chart in Battery

Instructions.

The battery level is precision monitored by the internal

microprocessor which also drives the Power LED for

accurate battery condition.

Controls & Functions

IMPORTANT! When the battery voltage drops

below 6 Volts, the power LED will remain off,

but the other 3 LEDs will light up and a rush of

audio noise and distortion will be heard as the

squelch opens. This condition is normal, and

is easily remedied by replacing the battery.

RF LED

Lights when the transmitter is turned on and the re-

ceiver has a strong RF signal. The RF LED will start

blinking when the RF carrier signal from the transmitter

becomes too weak to produce a clean audio signal.

The lamp will go out completely when the RF signal is

absent or extremely weak.

Audio Out Jack

The 3.5mm mini phone jack provides an audio output

that is controlled by the Audio LEVEL control on the

front panel. Generally, the Audio LEVEL control would

be set to provide the proper output level to match the

required level for your video camera or other equip-

ment.

The 3.5mm mini jack will accommodate a mono plug

(tip & sleeve) or a stereo type jack (tip/ring & sleeve)

without harm to the unit. When using a pair of stereo

headphones the audio will be mono but will drive both

earphones in the correct (binaural) phase.

The output at this mini connector jack is designed to

also drive a standard impedance earphone, typically 30

Ohms (most common) and usually provides adequate

volume for setup and testing. The sound from a low

impedance ear phone (ie. 8 Ohms) will not be very loud

and may be distorted at higher listening levels.

Battery Compartment

Power

ON/OFF

Switch

Modulation LEDs

Audio LEVEL Control

Audio OUT Jack

RF LED

Antenna

Power LED

Frequency Select Switches

(Under Door)

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

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Lectrosonics UCR100 User Manual Page 5

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