Lectrosonics UCR411a User Manual download pdf (Page 8)

UCR411A

LECTROSONICS, INC.

applied to remove most of the hiss from the mic preamp

and some of the hiss from lavaliere microphones. The

noise reduction beneﬁt is dramatic in this position, yet

the degree of transparency maintained is exceptional.

When switched to FULL, enough noise reduction is ap-

plied to remove most of the hiss from nearly any signal

source of reasonable quality, assuming levels are set

properly at the transmitter. This additional noise reduc-

tion comes at the cost of some transparency for low-lev-

el room noise, yet the algorithm remains undetectable

under most circumstances.

Audio Output Level

A setup screen is provided for adjusting the audio out-

put level in 1 dB increments from -50 to +5 dBu using

the front panel SEL Up and Down buttons.

Test Tone

To assist in matching the audio levels of equipment con-

nected to the UCR411A, a 1 kHz audio test tone, adjust-

able 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 UCR411A operates on two 9 Volt alkaline or LiPoly-

mer rechargeable batteries.

NOTE: Do not use an alkaline and a LiPolymer

rechargeable in the same unit. Standard or “heavy

duty” batteries are not recommended.

Power Supply

The UCR411A may be operated from an external 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 automatically resets if

the power supply is disconnected for about 15 seconds.

The power section also has protection circuits that pre-

vent damage to the receiver if a positive ground power

source is applied.

LCD Display

The display has four primary windows. Pressing the

Front Panel MENU button steps 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 times out and reverts back to

last screen used when reactivated.

Power Up Sequence

The power up sequence consists of four messages that

appear automatically after the power is switched on.

1) UCR411A

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

XXX

Where “XXX” is one of the following:

NA 400 North American - Native 400 Series Digital Hybrid mode

NA 100 Lectrosonics 100 Series compatibility

NA 200 Lectrosonics 200 Series compatibility

NA M3 Compatible with certain non-Lectrosonics transmitters

NA IFB Compatible with all Lectrosonics IFB transmitters.

NA M6 Compatible with certain non-Lectrosonics transmitters

NA M7 Compatible with certain non-Lectrosonics transmitters

EU HBR European Union - Native 400 Series Digital Hybrid mode

EU 100 European Union - 100 Series compatibility

EU 200 European Union - 200 Series compatibility

EU M3 European Union - Compatible with certain

non-Lectrosonics transmitters

EU IFB European Union - Compatible with all Lectrosonics

IFB transmitters.

EU M6 European Union - Compatible with certain

non-Lectrosonics transmitters

EU M7 European Union - Compatible with certain

non-Lectrosonics transmitters

Note: NA M7 & EU M7 are only available with ﬁrmware

6.0 on the audio board.

4) TUNING

NORMAL Tune in single channel increments.

GRP x Tune in pre-coordinated intermod-free frequen-

cies (x is A, B, C, D, U or V)

The Main Window appears after the introductory mes-

sages are displayed.

The UCR411A is fully operational during the power

up sequence and will immediately respond to button

pushes made before the automatic sequence is com-

pleted. 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.

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Lectrosonics UCR411a User Manual Page 8

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