Lectrosonics UCR411 - Manual (Page 12)

INSTALLATION AND OPERATING INSTRUCTIONS
1. Install batteries or connect the power cord.
2. Attach the antennas.
3. Turn the unit on. Check to see that the LCD display panel activates.
4. Set the frequency to match the transmitter frequency switch setting. See page 7.
5. Turn transmitter on and verify that an RF signal is being indicated on the LCD screen. See page 6.
6. Connect the audio cable to the audio output XLR.
7. Adjust the transmitter gain. THIS IS PERHAPS THE MOST IMPORTANT STEP IN THE SET UP PROCEDURE.
See your transmitter manual (Operating Instructions section) for details on how to adjust the transmitter gain. In
general, adjust the transmitter gain so that the voice peaks will cause the audio modulation Level display on the
front of the receiver and transmitter to show full modulation on the loudest peak audio levels. Normal levels
should cause the audio level icon to fluctuate fully (see page 6). This will result in the best possible signal to
noise ratio for the system.
A common mistake at this point is to use the transmitter audio gain control to set the overall audio level of the
entire audio system. The transmitter gain control is not a volume control and must be set independently of the
overall system audio level. The transmitter gain control is only used to set the proper modulation of the transmit­
ter. To explain it another way, it is used to match the transmitter to the type of microphone and the sound levels
that will be present at that microphone. We encourage users to either disconnect the rest of the sound system or
turn the sound system gain way down to prevent feedback or overload as the transmitter gain is set. That way,
feedback from the sound system or overload of other equipment does not get in the way of setting the transmitter
gain properly. Only after the transmitter gain control is set should the gain of the rest of the audio system be
adjusted to achieve the desired sound or signal levels.
8. Adjust the audio output level to match the required input level of the connected device (camera, mixer, recorder,
etc.). Use the LEVEL or TONE setup screen under the LEVEL WINDOW menu and adjust the output level with
the Up and Down buttons. The adjustment range is from -50dBu to +5dBu in 1dB steps.
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.
Output
25V XLR
Level
Non-Polar OUT
Adjust
50
50
5K
5K
AUDIO
AMP
2 (HI)
1 (COMMON)
3 (LO)
Caps
UCR411 Simplified Audio Output Circuit
UCR411 REPLACEMENT PARTS AND ACCESSORIES
Part No. Description
32251 Velcro mounting strips
CCMINI Zippered, padded vinyl system pouch
CH12 AC power supply
VSR1 Thin velcro loop for power cable strain relief.
A8U UHF marine phosphor bronze antenna - straight connector, specify block.
12