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7. MAINTENANCE & TROUBLESHOOTING
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7.6.2 Diagnostic test description
Header: Sent by the sonar system (wet end) to tell the Processor what kind of
data format it sent, IGX for image data and ITX for normal digital data.
Data Type: (same as Run-Type) sent by the sonar system (wet end) to tell the
processor this set of data is coming from which sensor.
Serial Stat: indicates if the communication between sonar system and
Processor is normal or not.
Head Pos: (Head Position) a number sent by the sonar system to tell the
Processor vertical sonar shooting direction. Valid number: 100-1300 (an angle
between 0 to 360 degrees).
Head Dir: A value indicates vertical sonar scan direction: 0 for counter clockwise,
1 for clockwise.
Range: Vertical sonar and echo sounder operating range. The operating range
for vertical sonar is 10m to250m. The operating range for echo sounder is 50m
to300m.
Sync Val: a number that represents the level of the SYNC pulse from the sonar
head and echo sounder/Catch Sensor for every shot (approximately 800).
Data Bytes: how many bytes the sonar system sent to the Processor for each
shot.
PRF: milliseconds elapsed between the two consecutive interrogations for a
sensor. Usually the system interrogates the Echo Sounder every second and
Pitch/Roll data every 5 seconds.
Temp Val: temperature value sent by the sonar system (coded).
Temp: Decoded current temperature reading in Celsius or Fahrenheit units.
Depth Val: Depth value sent by the sonar system (coded).
PSI: a number sent by the sonar system to indicate the type of pressure sensor
installed in the system. 0: 1000 PSI, maximum displayed depth 686 meters. 1:
3000 PSI, maximum displayed depth 2059 meters.
Depth: Decoded current depth reading.
Pitch: Decoded pitch value.
Roll: Decoded roll value.
CH1, CH2, CH3, CH4: four catch sensor channels. 0: channel (sensor) disabled
or not receive any signal from this channel, 1: received stand by signal from this
channel, 2: catch sensor triggered.