COBHAM Sea Tel 4010W-91, Installation Manual

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4010W-91 Installation Manual Installation
3-12
Connect the 9 pin ribbon cable from this PCB to J2 “NMEA” DB9 on the rear panel of the ACU. Connect the
25 pin ribbon cable from this PCB to J1 “Ship Gyro” DB25 on the rear panel of the ACU.
CAUTION - Electrical Shock Potentials exist on the Gyro Compass output
lines. Assure that the Gyro Compass output is turned OFF when handling
and connecting wiring to the Terminal Mounting Strip. DO NOT HOTPLUG
THIS CONNECTION
3.7.7.1.
Jumper Selection
JP1 – JP4 are to couple in pull-up resistors for the below listed functions. JP5 selects the DC voltage
output on TS4.
JP1 SW1
– This output would be used for below decks band select - to control a band selection
switch or tone generator. Default is OPEN.
JP2 SW2 (blockage & RF radiation hazard output) - Used to control dual antenna arbitrator, in
dual antenna configurations, and provide TX Mute control to the Satellite Modem. Default is
SHORTED when blocked.
JP3 SW3
(reserved) - Reserved for future use.
JP4 AGC
(external AGC input) - Pull-up for external AGC input from Satellite Modem which is
used to a positive satellite Network ID when the modem is on the correct network (therefore the
antenna is on the correct satellite). Default is SHORTED.
NOTE: This jumper MUST be
removed when using iDirect 3000 & 5000 Series modems.
JP5
Voltage Output Select - Select 12VDC or 24VDC. Default is 12VDC.
3.7.7.2. J1 “Modem Console Port” connector
FCC compliance connection to an iDirect Satellite Modem can be made very easily by connecting a
Straight Serial RJ-45 cable from the J1 “Modem Console Port” connector on the Terminal Mounting
Strip to the Console port on the iDirect Modem. Your modem must be set
If your modem is Open AMIP compatible and you wish to use it in an Open AMIP configuration you
will use an Ethernet patch or cross-over cable as is appropriate to connect to your LAN.
Refer to the Setup – Modem Connections, Setup and Test chapter for more information.
3.7.7.3. TS1 Control Interface Connections.
AGC & GND - External AGC, or Modem Lock, input.
•
External AGC input to the DAC-2202 must be 0 to 15 Volts DC analog signal, positive going
voltage proportional to satellite signal input level and must be real-time in its response to
antenna pointing.
•
External Modem Lock from a satellite modem is used as a positive ID that the antenna is on
the desired satellite.
This input is NOT used for Tracking purposes
, it is only used for
satellite identification to acquire the correct satellite during search. To enable the external
modem input you must include a 2 in the SYSTEM TYPE parameter (If your system type is
presently 76 or 77, then change it to 78 or 79) and
NID MUST be set to 0000
.
•
Connections
- The modem lock signal connects to EXT AGC and a ground reference
from the modem. The expected signal from the modem allows 0VDC to +15VDC. Low
voltage indicates modem lock, high voltage indicates modem unlock.
•
Testing
- The input connections from the modem can be tested by selecting the external
AGC input and monitoring the displayed value. To select external AGC, set the tuning
frequency to 0000. Normally, AGC readings below 2048 are considered a low condition
and indicate modem lock and AGC readings above 2048 are considered a high condition
and indicate modem unlock.
[If you find the AGC reading for locked and unlocked conditions need to be reversed you
must add 128 to your current SYSTEM TYPE parameter].
Turn tracking OFF when checking the external AGC inputs. Be sure to properly retune the receiver
frequency when you are finished testing the external input.