Vertex Standard VXR-7000, Service Manual

Page: 3 / 146

3 VXR-7000 UHF Service Manual
Operating Manual Reprint
Rear Panel
ANI Display
The ANI LCD (Liquid Crystal Display) indicates the
pre-programmed ANI message according to the ANI
code received.
TX/BUSY
Indicator
The
BUSY
indicator glows green when the channel
is busy, and the
TX
indicator glows red when the re-
peater is transmitting.
ANI RESET
Button
(1) ANI
Press this button to clear the message on the ANI
display, and turn off the LCD backlight.
(2) ENI
Press this button to turn off the Alert tone.
Press this button again to clear the message on the
ANI display, and turn off the LCD backlight.
EXT SP
Jack
This 3.5-mm, 2-pin jack provides variable audio out-
put for an external speaker. The audio output imped-
ance at this jack is 4
Ω
~ 16
Ω
, and level varies ac-
cording to the setting of the front panel’s
VOL
con-
trol.
TX Antenna Jack
This N-type coaxial jack provides the transmitting out-
put signal for connection to the transmitting antenna
or TX jack on the duplexer, if used. The output im-
pedance requirement is 50
Ω
.
RX Antenna Jack
This N-type coaxial jack accepts the receiver input
signal from the receiving antenna or RX jack on the
duplexer, if used. The input impedance requirement
is 50
Ω
.
ACC Jack
This DB-25 connector provides a data interface be-
tween the microprocessor in the VXR-7000 and pe-
ripheral devices (such as the VX-TRUNK Unit).
LINE
Jack
This 8-pin modular jack is used for remote control. It
provides TX and RX audio, TX keying, and squelch
status output. The TX and RX audio impedance is 600
Ω
.
GND
Terminal
For best performance and safety, the GND terminal
should be connected to a good earth ground using a
short, heavy, braided cable.
AC Jack (AC MAINS ~
)
This receptacle accepts the AC power cord, which
should be connected to the AC mains supply or wall
outlet. The AC line voltage must match that for which
the repeater is wired.
BATT Terminal (DC MAINS
)
These terminal posts accept 12~ 15 VDC for operat-
ing the repeater from a battery or other DC source.
When operating from AC mains, a small trickle cur-
rent is present at these terminals to maintain battery
charge. A battery rated for 12 volts, 55 Ah (minimum)
is recommended for short-term emergency/backup op-
eration.