Lectrosonics R185 - Manual (Page 6)

RECEIVER REAR PANEL
ANTENNA INPUT This input connects to any 50 Ohm antenna with a BNC type connector.
12 VDC INPUT This input connects to the supplied CH-12 AC adapter for powering the receiver from a 110/120V
AC source. The receiver may also be powered from external 12 Volt DC sources using the correct plug
(Switchcraft S-760 power plug). The center pin is positive. (+). If the external DC source is of the wrong polarity,
the R185 receiver will not operate. The unit is equipped with a "reverse polarity diode" at the DC power input which
prevents damage in the case of improper polarity. If a DC source of the wrong polarity is connected to the R185,
the diode will shunt the DC to ground through the internal polyfuse. Correct the polarity and wait approximately 15
seconds for the polyfuse to recover then re-connect the external DC power.
AUDIO OUTPUTS
XLR: This connector supplies a balanced, low impedance output at microphone level. The audio
signal is present on pins 2 and 3, while pin 1 is ground. The output level of this jack is controlled by
the OUTPUT ATTENUATOR control on the front panel of the receiver. Pin 2 is "hot" in terms of
signal phase.
1/4": A high level (700mV max.) output at medium impedance (600 Ohms). This is a three
conductor jack with the tip and ring carrying the signal and the sleeve as shield. The tip is "hot" in
terms of signal phase. Output from this jack is controlled by the OUTPUT ATTENUATOR control on
the front panel.
RCA: A 1 Volt "line" output at 1K Ohms. The output of this jack is not controlled by the OUTPUT
ATTENUATOR control on the front panel.
AUDIO IN This is an audio input providing a unity gain mixing bus input via a standard RCA jack. Signal applied
to this jack will appear at all three output jacks. This input is provided as a convenience in multiple channel
installations with simple mixing requirements, or for patching in another audio source (tape deck, etc.). Multiple
R185 receivers may be "stacked" with mixed audio output by connecting the LINE OUT jack of one receiver to the
AUDIO IN of the next receiver, and so on. Up to four or five receivers may be "stacked" in this manner before
noise build-up becomes objectionable.
RIO RANCHO, NM MADE IN USA
LECTROSONICS, INC.
AUDIO OUTPUTS
LINE OUT AUDIO IN
12V DC INPUT
+
ANTENNA
BAL MIC LEVEL
100mV max
BAL 600
700mV max
2
1
3
Figure 4 - R185 Rear Panel
6