Sea Tel DAC-2202, Инструкция по установке и эксплуатации

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DAC-2202 Antenna Control Unit Maintenance & Troubleshooting
8-3
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.
1. The Ships Heading display does not change when the ship changes direction. Using a multimeter
read between R1 and R2. It should read 115 VAC. If it does not then a fuse is blown at the gyro
repeater or there is an open between the repeater and the ACU. Read between S1 and S2, S2 and
S3 and finally S3 and S1. They should all read between 0 and 90 VAC. The voltage level will change
as the ship turns. If one reading is very close to 0 volts wait until the ship has made a major change
in heading and then check voltage again. If the reading is still very low there is a problem in the line
between the gyro repeater and the ACU or a problem in the gyro repeater itself.
2. The display changes in the direction opposite of the movement of the ship. Switch the secondary
leads S1 and S2. Caution: there is 90 VAC between them! Verify that when the ship changes
direction the display shows change in the same direction. If the direction is correct but the heading
is incorrect go to step C.
3. If the ship's heading is different than the bridge, select the HDG function in the SHIP display mode
by pressing the SHIP key 4 times. Key in the correct heading using the numeric keys and press
ENTER.
8.4. Display Offsets / Optimizing Targeting
If the antenna does not target to /- 1.0 degrees of the satellite actual Elevation and Azimuth location of the
desired satellite, the EL & AZ TRIM parameters need to optimized. The is because the targeted positions may be
different than the calculated look angles due to mechanical installation or antenna alignment offsets.
Targeting should have been optimized when the system was installed and should not need to be re-adjusted in normal
operation. However, you will need to re-evaluate the elevation trim if the antenna has been re-balanced.
You may correct the displayed positions to optimize targeting by following the procedure described in the
Maintenance section of your antenna pedestal manual.
8.5. Pedestal Control Unit Configuration
If the power up display of the ACU says SEA TEL – REMOTE “xx97 VER 1.xx” the PCU is not configured for a specific
Series 96, 97 or 00 MODEL number. The configuration information that is unique to each pedestal type is stored in a
Non Volatile Random Access Memory (NVRAM) in the PCU enclosure. If the PCU is replaced or the NVRAM in the PCU
should become corrupt, the PCU must be re-configured to operate with the pedestal it is installed on. The default
configuration for the PCU is model “
xx97
” (or
xx96, or xx00
). In this configuration the Level Cage will be driven
normally but the PCU will not drive any of the three torque motors to prevent damage to the unknown pedestal. To
configure the PCU refer to the Maintenance section of your antenna pedestal manual.
8.6. Configuring the COMM IF ports of the DAC-2202 ACU
The Monitor and Control (M&C J3) port allows external control from a PC using a communications program such as
Sea Tel’s ProgTerm or DacRemP via a straight 9 wire serial cable. This Port is used in conjunction with a diagnostic
software connection to configure all communications settings, and/or for an
Authorized Sea Tel Dealer to perform
software uploads to the PCU, ACU Main PCB, and DVB Receiver.
The Ethernet Port allows use of a LAN connection to login into the ACU’s internal webpage’s to view or change system
parameters using a web browser such as Internet Explorer or Mozilla Firefox. This 10BaseT Ethernet Port has a
configurable static IP address with 2 TCP/IP connections for diagnostic software connections and a UPD Port for an
Authorized Sea Tel Dealer to perform a software upload to the Comm IF Module.
The NMEA J2 Port allows 2 simultaneous NMEA-0183 connections on the same DB9 connector, defined as NMEA A
and NMEA B. Both NMEA A (J2-Pin1 Rx+ and J2-Pin3 Tx-) and NMEA B (J2-Pin7 Rxe+ and J2-8 Txe-) Ports have
selectable baud rates independent of each other. The following procedure describes the process of connecting the
ACU to your Laptop and configuring all Comm IF Properties.
Hardware/Software Requirements:

Laptop/Desktop with an available Serial Com Port and ProgTerm Version 1.33 (Build 11.Mar.2007 or later). If
no DB9 Serial port is available use a USB to Serial Adapter or use IP version of ProgTerm. Standard Straight 9
wire serial cable (Sea Tel Part Number 120643-25 or equiv.)