Lectrosonics UCR401 - Manual (Page 18)

UCR401
LECTROSONICS, INC. 18
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