Lectrosonics UCR300 - Manual (Page 7)

UHF Wireless Diversity Receiver
REAR PANEL CONTROLS AND FUNCTIONS
DC IN JACK
The UCR300 can be powered from external 10 to 16.5 Volts DC
applied directly to this jack, or conventional 220 VAC sources
via the supplied CH20 adapter. The UCR300 is protected from
reverse polarity conditions which prevents damage if a positive
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 in preventing accidental pull-out.
AUDIO OUTPUT XLR JACK
This jack is a standard 3 pin XLR connector. For balanced
applications, 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 Com­
mon or Ground.) It’s not necessary or desirable to ground pin 3.
(The output is balanced and center tapped.)
MONITOR
This is an audio output to drive a wide variety of different types
of headphones. It is also usable as a second high quality audio
output to drive recorders or external audio devices. The level at
this jack is independantly adjustable with the associated knob.
RANGE SWITCH
The audio output range switch is located on the rear panel and
is the switch nearest the front panel. This switch controls the
range of adjustment of the front panel Audio Output control. In
the Low position the adjustment range is from –50dBu to
–20dBu, the High position allows an adjustment from –30dBu
to 0dBu, and the Fixed position sets the audio output to a fixed
+8dBu with no front panel control.
COARSE FINE
AUDIO OUT
LO MID HI
LECTROSONICS
12VDC
MONITOR
CH20
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
1 2
3
Rio Rancho, NM – USA 7