Lectrosonics UCR511 User Manual download pdf (Page 7)

UHF Wireless Digital Hybrid

Receiver

algorithm remains undetectable under most

circumstances.

RF-CONTROLLED DIGITAL NOISE FILTER

In addition to SmartNR

, the UCR511 contains an RF

sensitive variable frequency filter, which reduces high

frequency response under extremely weak RF condi-

tions. This filter does nothing until the RF signal strength

drops below 3 uV at which point it begins to roll off high

frequencies. Usable audio remains unaffected, but

noise-ups or “hits” occurring near the fringe of reception

sound much less harsh.

OUTPUT LEVEL ADJUST

One of several setup screens is provided for adjusting

the audio output level in 1 dB steps from -50 to +5 dBu

using the SEL Up and Down buttons on the front panel.

TEST TONE

To assist in matching the audio levels of equipment

connected to the UCR511, a 1 kHz audio test tone,

adjustable from -50 to +5 dBu in 1 dB increments, is

available at the XLR connector. This tone is available

through the TONE display window.

BATTERIES

The UCR511 operates on two 9 V alkaline or lithium

batteries. Access to the battery compartment is gained

by lifting one end and turning the rear panel door.

Note

Do not use an alkaline and a lithium in the same unit. Standard or

“heavy duty” batteries are not recommended.

POWER SUPPLY

The UCR511 may be operated from an external (Nega-

tive Ground) DC power source (see Specifications and

Features section for allowed voltages.) The receiver has

a built-in Poly-Fuse to protect the unit. This fuse resets if

the power supply is disconnected for about 15 seconds.

The power section also has protection circuits that

prevent damage to the receiver if a positive ground

power source is applied.

LCD DISPLAY

The display has four primary windows: Main, Setup,

Battery Level, Frequency. Pressing the MENU button

rotates through each of these windows.

If the battery gets low on either transmitter or receiver, a

message will interrupt the display every few seconds and

flash a low battery warning.

After power is turned off and back on again, the unit

defaults to the Main Window and to the most recent

frequency, audio level, transmitter battery type and other

user settings. These settings are retained even if the

batteries are removed. After five minutes of no key

activity, the LCD backlight goes off and the display

reverts back to the Main Window.

POWER UP SEQUENCE

The power up sequence consists of four messages that

appear automatically over a period of a few seconds

after the power is switched on.

1) UCR511

BLK xx (xx is the frequency block number)

2) VERSION

R.R/A.A (R.R is the RF board firmware

version, A.A is the audio board firmware

version)

3) COMPAT mode (mode is one of the following:

500 - native 500 Series mode

100 - Lectrosonics 100 Series compatibility

300 - Lectrosonics 300 Series compatibility

MODE 3 - compatible with certain non-

Lectrosonics transmitters)

IFB - compatible with all Lectrosonics IFB

transmitters.

4) TUNING mode (mode is one of the following:

NORMAL - tune in single channel increments

GRP x - tune in precoordinated intermod-free

frequencies (x is A, B, C or D))

The Main Window will appears after these introductory

messages are displayed.

The UCR511 is fully operational during the power up

sequence and will immediately respond to button pushes

made before the automatic sequence is completed. If a

valid transmitter signal is already present when the

receiver is turned on, the audio output will typically be

engaged somewhere in the middle of the power-up

sequence, following a brief delay to allow the audio

circuits to stabilize.

POWER OFF

When the Front Panel Power ON/OFF switch is moved to

the OFF position the audio output is instantly muted

(squelched) and the message “POWERING OFF...” is

displayed briefly before switching off.

Rio Rancho, NM – USA

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Lectrosonics UCR511 User Manual Page 7

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