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3-7-5
System Control Interface (See Table 3-15)
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 3-15
Use
No.
Item
1
TX ON CONT
2
TX OFF CONT
3
TX RESET
4
EX 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 (Reserved)
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 - 31
Description
-
indication of transmitter and OFF status
indication sent out to remote site is released.
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-G22996
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