Xyz 88 - Kongsberg EM series Instruction Manual

XYZ 88

Note
This datagram is used for the models EM 2040, EM 2040C, EM 710, EM 122, EM
302 and ME70BO. All receiver beams are included, check detection info and real time
cleaning for beam status (note 4 and 5).
Table 23 XYZ 88
Data Description
Number of bytes in datagram
Start identifier = STX (Always 02h)
Type of datagram = X (58h, 88d)
EM model number (Example: EM 710 = 710)
Date = year*10000 + month*100 + day (Example:
Sep 26, 2005 = 20050926)
Time since midnight in milliseconds
(Example: 08:12:51.234 = 29570234)
Ping counter (sequential counter)
System serial number
Heading of vessel (at TX time) in 0.01°
Sound speed at transducer in dm/s
Transmit transducer depth in m re water level at
time of ping
Number of beams in datagram = N
Number of valid detections
Sampling frequency in Hz
Scanning info.
Spare
Repeat cycle - N entries of :
Depth (z) from transmit transducer in m
Acrosstrack distance (y) in m
Alongtrack distance (x) in m
Detection window length in samples
Quality factor
Beam incidence angle adjustment (IBA) in 0.1 deg 1S
Detection information
Real time cleaning information
Reflectivity (BS) in 0.1 dB resolution
(Example: –20.1 dB = FF37h= 65335)
End of repeat cycle
Spare (always 0)
End identifier = ETX (Always 03h)
Check sum of data between STX and ETX
850-160692/R
Format Valid range
—
4U
—
1U
—
1U
—
2U
—
4U
4U 0 to 86399999
2U 0 to 65535
2U 100 –
2U 0 to 35999
2U 14000 to 16000
—
4F
2U 1 – 1024
2U 1 – 1024
—
4F
—
1U
—
3U
—
20*N
—
4F
—
4F
—
4F
—
2U
1U 0 – 254
-128 to 126
—
1U
—
1S
—
2S
1U 0
—
1U
—
2U
Output datagrams
Note
—
—
—
—
—
—
—
—
—
—
1
—
—
—
7
—
—
2
2
2
—
3
6
4
5
4
—
—
—
43