Lectrosonics UCR401 User Manual download pdf (Page 18)

UCR401

LECTROSONICS, INC.

Warning: A common mistake is to use the

transmitter audio gain control to set the overall

audio level of the recorder or sound system.

The transmitter gain control is only used to

set the proper modulation of the transmitter

to match the microphone placement and

talker’s voice level. Once set it should remain

untouched until the microphone, placement or

talker changes.

6. Adjust the Audio Output on the receiver for an op-

timal level for your recorder or sound system. Use

the LEVEL setup screen and adjust the level with

the SEL Up and Down buttons.

The input levels of different cameras, VCRs, and PA

equipment vary, which may require that you adjust

the AUDIO OUT to an intermediate position. Try dif-

ferent settings and listen to the results. If the output

of the receiver is too high, you may hear distor-

tion 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 UCR401

audio output is designed to drive any audio input

device from microphone level to +5dBu line level.

Note: The test tone output is especially useful for

an exact level match. With the test tone running,

adjust for the maximum desired peak level using

the metering on the connected device.

Finding Clear Frequencies

The folllowing procedure will help you identify RF sig-

nals in the area and ﬁnd clear channels for operating

the wireless system.

1. Ensure transmitter has fresh batteries and is turned

off. Turn on the receiver and wait a few seconds

until the Main Window appears on the LCD.

3. Simultaneously press the MENU and SEL Up and

Down buttons to enter Scan Mode.

4. View the LCD while the receiver is scanning. The

vertical marker will move across the display from

left to right. RF activity will be indicated by black

areas in the display.

5. RF signal strength is indicated by markings in

microvolts on the front panel to the left of the LCD.

Look for clear channels in the spectrum where

there is no RF activity. Scanning will repeat and

continue until the MENU button is pressed.

6. If necessary, press the MENU button to zoom in for

greater detail.

7. Then press the SEL Up and Down buttons to move

the marker to the middle of a clear area where

there is no RF activity. If an area with no RF activity

cannot be found anywhere in the spectrum, locate

one with the least amount of RF activity.

8. Press all three buttons (SEL Up and Down and

MENU) to move to the next screen. Two options will

be shown.

Press the SEL Down arrow button to select the

USE NEW option and set the receiver to the new

frequency just found in scanning.

-OR-

Press the SEL Up arrow button to select USE OLD

and return to the frequency that was set before

scanning.

Fine adjustment can be made

when zoomed closer

SEL Up Button

SEL Down Button

MENU Button

Press all three buttons at the same time and the receiver will

start scanning.

Move marker to area with

no RF activity

Vertical marker moves left to right

Strength of RF activity is indicated in

microvolts with markings on the front panel

RF activity

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Lectrosonics UCR401 User Manual Page 18

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