User`s manual

DATA STORAGE FILE FORMAT (.81S) (con't)
SONAR RETURN DATA HEADER
Bytes 100 through 111 contain the following Sonar Return Data Header
information:
100 ASCII 'I'
101 ASCII 'G'
102 ASCII 'X'
103 Head ID – always 0x10
Serial Status
Bit 0 - 0
Bit 1 - 0
Bit 2 - 0
Bit 3 - 0
Bit 4 - 0
Bit 5 - 0
Bit 6 - 1 = Switches Accepted
Bit 7 - 1 = Character Overrun
104
105 SportScan Type
0 = Single Frequency
1 = Dual Frequency
106 Sidescan Channel
1 = Starboard
2 = Port
3 = Both
107 Range
15, 30, 60, 90 or 120 meters
108 Reserved - always 0
109 Reserved – always 0
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