Sea Tel DTV04, Инструкция по установке и эксплуатации

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DTV04 HD TVRO Antenna Troubleshooting and Maintenance
7-7
Stability Limit
(Stab Limit)
Indicates that the above decks equipment is mis-pointed from its intended target by more than
0.5°. (FCC Tx Mute Compliance)
AZ Reference Error
(Ref)
Indicates a failure to integrate one the reference inputs within the Azimuth Stabilization Loop. (i.e.
encoder or Home Flag error)
AZ Servo Limit
(AZ)
Indicates the current draw through the Azimuth Servo Amplifier (motor driver PCB) has exceeded
what is required during normal operation (i.e. as the result of physical binding)
LV Servo Limit
(LV)
Indicates the current draw through the Elevation Servo Amplifier (motor driver PCB) has exceeded
what is required during normal operation (i.e. as the result of physical binding or antenna
imbalance)
CL Servo Limit
(CL)
Indicates the current draw through the Cross-Level Servo Amplifier (motor driver PCB) has
exceeded what is required during normal operation (i.e. as the result of physical binding or antenna
imbalance)
7.3.10.
The remote command in the DAC-2200 to get the position from the GPS antenna mounted on the
antenna pedestal is @0000.
To send this remote command to the PCU;
Get Remote GPS LAT/LON Position:
•
Select the REMOTE COMMAND window on the ACU and;
•
Press the LEFT arrow key to bring up the cursor and move it to the left until the current
symbol in front of the 0000 is underscored.
•
Increment or decrement the symbol using the UP & DOWN arrow keys until the @
character followed by four zeros is displayed.
•
Press the ENTER key to send the command to the PCU.
•
Press ENTER, or the DOWN arrow key, to access the REMOTE MONITOR. The GPS Latitude
& Longitude position and status will be displayed on the bottom line of the display.
The Latitude & Longitude position of the GPS will be displayed in the following format:
@ LAT,N,LON,E,A & where LAT and LON are in degrees and minutes, LAT will be followed by N or S
(North or South), LON will be followed by E or W (East or West), then a status character and finally a
checksum character. Furuno default value is in Japan at 34.4N 135.2E (@3444,N,13521,E,,_). After
acquiring a good fix at Sea Tel the string is @3800,N,12202,W,A^ for our 38N 122W Latitude and
Longitude position.
The status character tells you the status of the GPS. Comma = GPS has NOT acquired a fix, N = GPS
fix is NOT valid and A = GPS has acquired a valid fix.
As a test, if a valid fix is being viewed in the Remote Monitor window and the GPS antenna cable is
unplugged from the PCU, the status character which was an A should become an N within 5
seconds.