System information

Basic System Information 9797B-70 C-Band TXRX
3-6
power for the air conditioner should be well regulated and surge protected, but does NOT need to from an
Uninterrupted Power Supply. Refer to the marine air conditioner manual for its’ power requirements and
consumption specifications.
3.4. Positive Satellite ID
The ACU has the means of positively identifying a satellite either internally (DVB compliant transponders) or Externally
(Modem lock indication via Ethernet, OpenAMIP, or via an analog DC input into the TMS.
For internal satellite ID, all of the DVB receiver parameter settings must be set to match that of the inbound
transponder.
For external satellite ID, the NID value must be set to 0000 and the system type parameter must include the 2 value
at minimum.
• For OpenAMIP compatible satellite modems, an Ethernet cable connection to the ACU’s Ethernet port is
required. NOTE: The modems option file must be built to enable the appropriate Rx lock indication.
• For non-OpenAMIP compatible satellite modems, 2 wires coming from the Satellite modems must be
connected to the AGC and Ground input pins of the TMS.
3.5. Open Antenna-Modem Interface Protocol (OpenAMIP™) Specification:
3.5.1.
OpenAMIP, an ASCII message based protocol invented and Trademarked by iDirect is a specification for the
interchange of information between an antenna controller and a satellite modem. This protocol allows the
satellite modem to command the ACU (via TCP port 2002) to seek a particular satellite as well as allowing
exchange of information necessary to permit the modem to initiate and maintain communication via the
antenna and the satellite. In general, OpenAMIP is not intended for any purpose except to permit a modem
and the ACU to perform synchronized automatic beam switching. It is
Overview:
NOT
3.5.2.
a status logging system or a
diagnostic system. In addition, OpenAMIP is intend for a typical installation whereby a specific satellite
modem and Antenna system are properly configured to work together. The protocol does not make specific
provisions for auto-discovery or parameter negotiation. It is still the responsibility of the installer to assure
the parameters of both the satellite modem (proper option files) and the ACU/PCU (setup parameters) are
actually compatible for the intended satellite(s).
3.5.2.1. Hardware
Interface requirements:
Sea Tel Antenna Control Units Model DAC2202 or DAC2302.
Any Satellite modem manufacturer that is compatible with OpenAMIP
CAT5 Patch cable
3.5.2.2. Software
Sea Tel model DAC2202:
ACU software version 6.06 or greater
CommIF module software version 1.11 or greater
Sea Tel model DAC2302:
ACU software version 7.06b or greater
CommIF module software version 1.11 or greater
3.5.3.
3.5.3.1. Antenna Commands:
Utilized OpenAMIP Commands:
Command Description Example
S f1 f2 f3 Satellite Longitude, 3 parameters:
Degrees E/W (-value equals West), Latitude Variance (Inclined Orbit),
Sat Skew Offset
“S -20.1 1.0 3.5”
P c1 c2 Polarization, 2 parameters: “P L R”