Lectrosonics UCR310 - Manual (Page 7)

UHF Wireless Diversity Receiver
REAR PANEL CONTROLS AND FUNCTIONS
DC IN JACK
The UCR310 can be powered from external DC applied directly to
this jack (see Specifications and Features section for allowed volt­
ages), or from the supplied CH20 adapter. The UCR310 is protected
from reverse polarity conditions which prevents damage if a posi­
tive ground power source is applied. The center pin of this jack is
POSITIVE. This power connector is threaded to allow the plug to
be locked to prevent accidental pull-out.
AUDIO OUTPUT XLR JACK
This jack is a standard 3 pin XLR connector. For balanced applica­
tions, Audio High is on pin 2, audio Low is on pin 3, and audio
Common is pin 1. For unbalanced use, the signal is developed
between pin 2 (Audio High) and pin 1 (Audio Common or Ground.)
It’s not necessary or desirable to ground pin 3. (The output is
balanced and center tapped.)
AUDIO OUTPUT RANGE SWITCH
The audio output range switch controls the range of adjustment of
the front panel Audio Output control. In the -20 position the
adjustment range is from -50dBm to -20dBm, the 0 position allows
an adjustment from -30dBm to 0dBm and the fixed position sets the
audio output to a fixed +8dBm (the front panel control has no effect
when the switch is in this position).
BATTERY RELEASE
To release the battery magazine, slide the battery release latch
away from the audio output jack. If batteries are already inside, the
force of the springs will push the magazine clear. Slide the maga­
zine off. After replacing the batteries, slide the magazine back into
place making sure the latch engages securely.
FREQUENCY ADJUSTMENT SWITCHES
To gain access to these switches, slide the access door sideways
with a fingernail. These two rotary switches change frequency of
the receiver. The frequency range (block) of the unit is laser
engraved on this switch cover.
ADJUSTING THE RECEIVER FREQUENCY
If you are experiencing interference from another signal on your
frequency, you may want to change the operating frequency of your
system. The left switch changes the operating frequency in coarse
steps and the right switch changes it fine steps. If you are experi­
encing interference, change the operating frequency in fine steps to
find a clear channel. If it is not possible to find a clear channel
using the FINE switch, return it to its original position and change
the COARSE switch by one click then try the FINE switch again.
Important - make certain that the switches on the transmitter are
set to the same position. If not the system will not be on matched
frequencies and will not work. Transmitter and receiver must also
be on the same block.
9-16VDC
0 –20 +8
AUDIO
AUDIO
OUT
BATTERY
RELEASE
1 2
3
0 1 2 3
4
5 6 7 8 9 A B
C
D E F 0 1 2 3
4
5 6 7 8 9 A B
C
D E F
COARSE FINE
Rio Rancho, NM – USA 7