Sea Tel 9711-44 KU-BAND TX/RX, Installation And Operation Manual

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9711-44 Ku-Band TXRX Installation (144” Radome)
3-35
If your modem cannot use the Modem Console Port connection you will have to
provide a transmit inhibit output from the ACU by connecting a SW2 wire connection
to the modem to comply with FCC Order 04-286 and WRC-03 Resolution 902
.
•
Dual or Quad Antenna Arbitrator coax switches in dual antenna configurations. The coax
switches select which antenna is feeding signal to the below decks equipment.
•
Mute the Transmit output of the Satellite Modem used in TX/RX antenna configurations
when the antenna is positioned where people may be harmed by the transmit power
emanating from the antenna (RF Radiation Hazard).
•
Mute the Transmit output of the Satellite Modem used in TX/RX antenna configurations
when the antenna is mispointed by 0.5 degrees, or more, and keep it muted until the
antenna has been within 0.2 degrees of peak pointing to the satellite for a minimum of 5
seconds (FCC part 25.221 & 25.222 TX Mute requirement).
3.10.7.5. TS2 Synchro Gyro Compass Input.
Use the R1, R2, S1, S2 and S3 screw terminals to connect the Synchro Gyro Compass to the ACU.
3.10.7.6. TS3 Step-By-Step (SBS) Gyrocompass Input.
Use the COM, A, B and C screw terminals to connect the SBS Gyrocompass to the ACU. Some SBS
Gyro distribution boxes have terminals which are labeled S1, S2 & S3 instead of A, B and C.
3.10.7.7. TS4 Power
•
VREG Screw terminal is used to provide a regulated DC operating voltage to ancillary
equipment. Voltage out is dependent upon which terminal mounting strip assembly is
provided. 126865-1 supplies 8Vdc @ 1Amp, while the 126865-2 assembly supplies 5Vdc
@ 2Amps.
•
GND
Screw terminal is the ground reference for the regulated and unregulated power
terminals.
•
12/24 Screw terminal is commonly used to provide operating voltage to an external GPS,
Dual Antenna Arbitrator or other below decks tone generators or switches. Voltage output
is based on the T.M.S assemblies JP5 jumper settings.
3.10.7.8. TS5 NMEA A/B, GPS output.
•
RxA- and RxA+- screw terminals, which are defined as the NMEA A connection is used to
connect to the ships Gyro Compass (Heading). The NMEA0183 compliant inputs are then
connected via a 9 pin ribbon cable to the ACU’s J2 NMEA communications port. A GPS
(Latitude and Longitude) input may also be connected, but is not required because there is
a GPS device already installed in your antenna..
NOTE:
If you connect a ships GPS to the
terminal mounting strip, you
MUST
disconnect the GPS antenna on the antenna
pedestal.
•
RxB- and RxB+ screw terminals, which are defined as the NMEA B connection is used to
connect to the ships Gyro Compass (Heading). The NMEA0183 compliant inputs are then
connected via a 9 pin ribbon cable to the ACU’s J2 NMEA communications port. A GPS
(Latitude and Longitude) input may also be connected, but is not required because there is
a GPS device already installed in your antenna.
•
TxA- screw terminal is used to provide a Pseudo GPS (GGA and GLL formats) output to
other system components such as a Satellite Modem.
3.10.8. Other BDE connections
Connect your other Below Decks Equipment (ie, telephone, fax machine and computer equipment) to
complete your configuration.
3.11. Final Checks
3.11.1. Visual/Electrical inspection
Do a visual inspection of your work to assure that everything is connected properly and all cables/wires are
secured.