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AWMA-Kx500-BTE
5. INTERFACES
Each unit provides four interfaces that can be used to connect the unit to several optional external
devices. The interfaces for this model are listed below:
1.
Relay (Discrete) Interface:
This interface offers the essential monitoring and control of the
Amplifier by discrete signals.
2.
RS-232 Interface:
This interface offers the operator essential monitoring and control of the
Amplifier or of the 1:1 redundant system, using a PC with Term95 or HyperTerminal
communications programs.
3.
RS-485 Interface:
This interface offers the complete monitoring and control of the SSPA
Amplifier or of the 1:1 redundant system and provides the communication and remote control
through the RS-485 serial communication port in packet mode. The system may be connected to
a Monitor & Control Panel or to a Network Manager System. The control system will
discriminate between the two units of a redundant system by address.
4.
RF Output Monitor Interface:
This interface provides a sample of the output power of the
unit through a 40dB coupler.
5.
TX LED
: a green/red LED indicating the state of the transmission path.
•
If this LED is not lit, the unit is not powered (or the power supply failed).
•
If this LED is RED lit, it indicates that the unit is in FAULT or ALARM condition.
•
If this LED is blinking RED, it indicates that the unit is in MUTE state (following a MUTE
command).
•
If this LED is GREEN lit, it indicates that the unit is functioning properly.
5.1 RELAY INTERFACE
The
Relay Interface
uses a 10-pin circular connector mounted on the Amplifier enclosure. The
connector type is listed in
at page 22 and the location is shown in
The pin assignment for this interface is shown in
Pins A, B and C of the connector are of Form-C relay type outputs that provide for the user an
indication informing the status of the transmission path of the SSPA unit.
Pins D, E and F are disabled (not used) for these units.
Pin G and H of the connector are inputs, allowing the user to mute or un-mute the RF path of the
SSPA transmission.
Pin J and H are disabled (not used) for these units.
CAUTION:
If pin G is not connected to pin H, the transmission path will remain disabled.
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