Axcera DT325B, Инструкция по эксплуатации

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350-Watt Digital VHF LB Transmitter Chapter 2, System Description, Maintenance &
Remote Control Connections
DT325B, Rev. 0 2-9
module does not slide in easily, verify it
is properly aligned in the nylon tracks,
located on both the top and bottom of
the module.
Note: Each Module has an assigned slot
and will not fit properly or operate in the
incorrect slot. Do not try to place a
Module in the wrong slot as this may
damage the slot or the connectors on
the backplane board. Each module has
the name of the module on the front,
bottom for identification and correct
placement. The Modules are placed in
the unit from left to right; (1)
Downconverter, (2) Blank panel, (3)
Blank panel, (4) Upconverter, (5) the
Controller/Power Supply and (6) a Blank
panel.
2.7: Customer Remote Connections
The remote monitoring and operation of
the transmitter is provided through
jacks TB30 and TB31 located on the rear
of the chassis assembly. If remote
connections are made to the
transmitter, they must be made through
plugs TB30 and TB31 at positions noted
on the transmitter interconnect drawing
and Table 2-9. TB30 and TB31 are 18
position terminal blocks that are
removable from their sockets to make
connections easier. Just grasp and pull
connector straight out. After
connections are made, replace the
connector and push firmly to seat the
connector in the socket.
Figure 2-2: Rear View Driver/Amplifier Chassis Assembly
Table 2-9: Driver/Amplifier Chassis Assembly Hard Wired Remote Interface Connections
to TB30 or TB31, 18 pos. Terminal Blocks Located on the Rear of the Chassis Assembly
Signal Name
Pin
Designations
Signal Type/Description
RMT Transmitter
State
TB30-1
(Connects to isolation relay board.) Discrete Open
Collector Output - A low indicates that the transmitter is in
the operate mode.
RMT Transmitter
Interlock
TB30-2
Discrete Open Collector Output - A low indicated the
transmitter is OK or completes a interlock daisy chain.
When the transmitter is not faulted, the interlock circuit is
completed.
RMT Transmitter
Interlock
Isolated Return
TB30-3
Ground - Configurable ground return which can be either
jumpered directly to ground or it can be the “source” pin of
an FET so that the transmitter interlock can be daisy
chained with other transmitters. This signal does not
directly interface to the microcontroller.
TB30
TB31