DATASONICS SIS-1500, Системное руководство

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SIS-1500 Seafloor Imaging System 5-23
SECTION 5 Maintenance and Troubleshooting System Troubleshooting
Uplink Vehicle Status and Sensor Data
The vehicle status and sensor data, the checksum, and the command echo
are transmitted to the processor from the tow vehicle. Refer to Section 2,
"Specifications," for a list of the vehicle status and sensor data. The data are
continuously transmitted from the tow vehicle and are displayed in the
Parameters display in the Main window. The data are also displayed as a
telemetry string in the Status display in the Main window. A checksum is
transmitted with every uplink transmission, and the command echo is
transmitted after the tow vehicle receives a downlink command. The uplink
telemetry data format is shown in Table 5-5 where the position number
corresponds to the order of the data in the string.
Table 5-5 Uplink Telemetry Data Format
Position in String Field Format Data
1 ***** Header
2 nnn.n Heading (degrees)
3 +/-nn.nn Pitch (degrees)
4 +/-nn.nn Roll (degrees)
5 nn.n Temperature (degrees Celsius)
6 nnnn.n Pressure (psia)
7 nnnnn.nnn Magnetic Field (gammas)
8 nnnn Magnetic Signal Strength (mv)
9 0 Spare
10 0 Spare
11 0 Spare
12 0 Spare
13 nn Low frequency port gain (dB)
14 nn Low frequency starboard gain (dB)
15 nn High frequency port gain (dB)
16 nn High frequency starboard gain (dB)
17 0 Spare
18 xxxxxx Command Echo
19 nnn Checksum
20 <CR> Carriage Return
21 <LF> Line Feed