Lectrosonics CR185 - Manual (Page 5)

CONTROLS AND FUNCTIONS
Since the internal circuits are all tightly regulated the receiver will continue to operate to a battery
voltage of 6.5 volts. From 6.5 volts to 6 volts, the receiver will still operate, but with degraded
performance. Below 6 volts, the regulated and temperature compensated squelch circuit will cease to
be regulated. The result is that the squelch circuit will remain "open". This will allow considerable
noise to pass through the audio circuits if the associated transmitter is off, or if other circuits of the
CR185 stop operating because of the low voltage condition. In addition, three out of the four LEDs on
the front panel will light (the exception being the POWER LED). Please note that a weak battery will
sometimes light the POWER LED immediately after turn on, but soon will discharge to the point where
the LED will extinguish. Regular installation of fresh batteries will insure optimum operation.
RF LED
Lights when the transmitter is turned on and the receiver has a good signal. When the carrier signal
from the transmitter is too weak to produce a clean audio signal, the lamp will go out.
MINI PHONE JACK
Provides a monitor, separate from the rear panel XLR audio output. The output level from this jack is
controlled by both the OUTPUT control and the recessed trim-pot on the side panel. Generally, the
OUTPUT control would be set to provide the proper output level at the rear panel XLR jack, and then
the side panel trim-pot adjusted to match the required level for your earphone.
The output at this mini connector is designed for a medium impedance earphone. An earphone with an
impedance between 30 and 300 Ohms will usually provide adequate volume. The sound from a low
impedance ear phone (ie. 8 Ohms) will not be very loud and may be distorted at higher listening levels.
ANT TERMINAL
Connects to any 50 ohm antenna with a BNC type connector (a flexible "rubber duckie" antenna is
supplied). The A-185 Coax remote type antenna may also be used.
LECTROSONICS
CR185
50
dBV
20
20 0dB
MODULATION
OUTPUT
OFF
EXT
POWER RF
INT
BATT
Adjust headset volume with
the trimpot on the side.
Figure 2 - CR185 Front Panel
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