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3-7-5
System Control Interface (See Table 3-14)
The external interfaces of control items relating to the transmitter are connected
through a Interface board. A connector (J5) of the Interface board accepts control
commands from the system control and also sends out transmitter status necessary for
the system control.
Table 3-14
Use
No.
Item
1
TX ON CONT
2
TX OFF CONT
3
RESET
4
AGC OFF CONT
5
EX A AGC OFF CONT
6
EX CHANGE SET
7
PA RF OFF CONT
8
EX IN USE
9
TOTAL ALARM
10
TOTAL WARNING
11
TX CHANGE
COMMAND
12
TX CONT PS OFF
Connectors for System control in the Output coaxial Equipment
(Interface Board J5-System control)
J5 (on the
Interface
Board)
Terminal No.
+
1
14/15 ON command
2
14/15 OFF command
3
14/15 Upon occurrence of a fault, hold status
4
14/15 Command to cut off the AGC circuit when
9
14/15 Command to cut off the A AGC circuit
5
14/15 Sends out the EX CHANGE signal as an
6
14/15 Command to cut off the PA OUTPUT when
7
14/15 Sends out the EX IN USE signal to
16
34/35 Some fault occurred in the transmitter.
33
34/35 Means that some minor fault occurred in the
17
34/35 Means the occurrence of an abnormality
18
34/35 When the power supply for this TX Control
3 - 32
Description
−
indication of transmitter and OFF status
indication sent out to remote site is released.
another transmitter is shut down.
when another transmitter is shut down.
exciter changeover signal when the exciter
in use came to a fault.
exciter is changeover.
transmitter, which is using EXCITER.
transmitter.
which urges changeover to the stand-by
transmitter.
is turned OFF, the TX CONT PS OFF signal
is sent out.
GWP-G22906
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