Service Manual
5
7. Local management port: with a dedicated coder, you can manage relevant
information settings of the base station. See P11 for cabling sequence
and setting
methods in detail.
8. Operating knob: used for operating the channel menu, and currently can be
used to control the speaker switch.
9. Speaker: in analog mode, when the speaker is enabled, you can monitor the
current call.
Rear panel
From Fig.2, you see the rear view of the base station, which consists of four
modules, i.e., the power supply module on the left, power amplifier module in the
upper middle, TX&RX module in the lower middle, and the duplexer module on
the right.
1. Power supply port: connect to 120V AC power supply.
2. Power switch & LED indicator: switch to
“
┃
”
to turn on the power; switch to
“
○
” to cut off the power. The LED indicator lights up red when the power is on.
3. Cooling fan: The moment when the power is turned on, the cooling fan rotates
for about 2 seconds; When the base station is in operation and the temperature is
over 45 , the fan starts to rotate
℃
for dissipation.
4. Battery port: 12V power supply or battery power supply. When the power
supply module (120V) is in normal operation, the port is in charging/idle state,
Figure2 - Rear Panel
①
②
③
④
⑤ ⑥
⑦
⑧
⑨
⑩
Содержание AK-861-4T
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