v240M – Marine Satellite Communication System
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M ODEM PORT PROTOC OL
ETHERNET I /O CONSOLE
5. The MODEM PORT* function selects a proper data communication port on the ACU to
interface with the modem.
PROTOCOL*
I/O CONSOLE: is a protocol for exchanging of information (GPS Out, TX mute, and
modem lock) between the ACU (through Console port) and a modem.
OPEN AMIP: is an ASCII based protocol developed by iDirect for exchanging of
information between the ACU and a modem. OpenAMIP is not intended for any purpose
except to allow the ACU and a modem to perform synchronized automatic beam
switching (ABS).
SERIAL GPS: is a protocol for sending GPS Out information from the ACU (through
RS232/422 port) to a modem.
ROSS: the ROSS Open Antenna Management (ROAM) protocol was developed by the
Comtech EF Data Corporation to offer a common management interface for Comtech EF
Data's Roaming Oceanic Satellite Server (ROSS) and the ACU.
VCAP: is the interface between the SatLink mobile VSAT IDU and the Intellian antenna
controllers for Intellian mobile antennas.
ELELKTRIKOM-AMIP: is an OPEN AMIP based protocol.
GILAT: is a NMEA0183 based protocol to monitor the status of the antenna and the
modem. It is passed through the Gilat SkyEdgeII modem RS232 serial port.
6. The GPS OUT SENTENCE* function selects the GPS OUT SENTENCE type. The USE
TX MUTE* enables or disables the TX MUTE function from the satellite modem. A transmit
inhibit output from the ACU will disable/mute the modem transmit via a voltage whenever the
antenna is blocked, searching, or is mis-pointed 0.5 degrees from the peak satellite position.
Set modem protocol
Use TX mute
G PS O UT SENTE NCE USE TX MUTE
GPGLL YES
MODEM PORT*
• ETHERNET
• RS422
• RS232
The PROTOCOL* function selects a proper communication protocol on the ACU to
interface with the modem.
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