The selected interface is controlled by a combination of internal SSPA settings and/or Interface control pins: Baud1 (Pin e) and Baud0 (Pin j) on the J4 M&C connector (See Table
Table 8-1: Interface Selection
Baud0 (Pin j) state | Baud1 (Pin e) state | Selected interface | |
Open | Open | Interface selected by Internal SSPA settings | |
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|
| |
Closure to | Open | Interface is forced to Ethernet interface. IP address is fixed to | |
Chassis ground | 192.168.0.9. Protocol is forced to Normal (HTTP web supported) | ||
| |||
Open | Closure to | Interface is forced to Ethernet interface. IP address is software | |
Chassis ground | selectable. Protocol is forced to Normal (HTTP web supported) | ||
| |||
Closure to | Closure to | Interfaced is forced to 9600 Baud serial. | |
Chassis ground | Chassis ground | ||
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Note: The state of these pins is sensed by the SSPA unit only at power up! Changing the state of these pins during normal unit operation will not affect the selected type of interface.
FSK interface allows the selection of Normal and VSAT protocols.
Note: For proper FSK interface operation, the SSPA internal settings must be selected to 9600 Baud and Normal protocol. Do not make a connection to interface control pins Baud1 and Baud0!
Note: For maximum ESD protection of a SSPA’s Serial interface internal circuit, the RS232/RS485 interface is isolated from the SSPA chassis ground. Serial interface has a separate interface ground pin (Pin d on the J4 connector). Connecting this pin to common ground will effectively disable the protection circuit and may cause interface failure.
All interface lines are equipped with transient suppression devices. Adding extra transient protection to communication lines is not required and may cause interface failure!
60 | 208143 REV - | Operations Manual, HPA3, Mini Compact Outdoor SSPA |