Lectrosonics CR187 - Manual (Page 6)

CR187
Receiver Rear Panel
Main Output XLR Jack 12 VDC Input
Audio Output XLR Jack
The Audio Output XLR Jack supplies a balanced, low
impedance output at microphone level. The audio signal
is output on pins 2 and 3, while pin 1 is ground. The
output level of this jack is controlled by the OUTPUT
control on the front panel of the receiver.
12 VDC Input
The 12 VDC 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
other external 12 VDC sources using the correct plug
(Switchcraft S-760 power plug). Although the CR187 is
a negative ground device, a diode bridge is used in the
external power input, so that the CR187 will operate
properly from either polarity.
Warning: Because the CR187 is a negative
ground device, do not connect this receiver
to a positive ground device through the audio
cabling. Damage to either device could result.
Battery Replacement
The CR187 is powered by a standard alkaline 9 volt
battery. It is important that you use ONLY an ALKALINE
battery for longest life. Standard zinc-carbon batteries
marked “heavy duty” or “long-lasting” are not adequate.
They will provide only about one hour of operation.
Similarly, nicad rechargeable batteries give less than 2
hours of operation, and will also run down quite abrupt­
ly. Alkaline batteries provide about 5 hours of operation.
To open the battery compartment, press outward on
the cover door in the direction of the arrow as shown in
the drawing. Only slight, sliding pressure is needed to
open and close the battery door. Swing the door open
and take note of the polarity marked inside showing the
location of the positive (+) and negative (-) terminals.
Insert the battery and close the cover by pressing in
and across, reversing the opening procedure outlined
above. Note that the battery door will NOT close if the
battery is inserted incorrectly, since the terminals will hit
a protective polarity barrier. Do not force the battery in.
LECTROSONICS, INC. 6