ATLAS North America Proprietary
Sea Scan ARC Scout MKII Operations Manual
1 of 1
Page: 51
Issue: 1.2.4
SCTM2-OPS
Operations Manual
7.1.3.7
MkII Data Packet
The MkII data packet stores proprietary data for the Scout MkII side scan sonar system.
Element
Variable Type
Description
byteRev
BYTE
Stores the revision number for the
packet. This indicates which fields are
used and which ones are not.
fTemp
float
This is the system temperature in
degrees Celsius.
fVIN
float
This value is the input voltage in Volts
DC.
fIIN
float
This value is the input current in Amps.
cChannel[4]
MkII_CHANNEL structure
These are 4 MkII_CHANNEL structures
which contain additional channel
specific information. See below for
more information.
byteWarnings
BYTE
This field contains the Scout MkII's
warning flags.
byteAlarms
BYTE
This field contains the Scout MkII's
alarm flags.
The MkII data packet stores information specific to each channel in a MkII_CHANNEL data structure as
described below. There are 4 individual channel structures stored sequentially.
Element
Variable Type
Description
wMode
WORD
This field stores the channel's ping
mode (Disabled, Chirp UP, Chirp Down,
or CW).
fCenterFreq
float
This field stores the center frequency
for this channel.
fBandwidth
float
This field stores the channel's
bandwidth in kHz. This applies to the
Chirp UP and Chirp Down modes.
fPulseLength
float
This field stores the channel's
configured pulse length in
microseconds.
fDuty
float
This field stores the channel's transmit
power (0.0 to 1.0)
iCycles
int
The number of cycles in the sonar pulse
at the center frequency if the CW mode
is configured for this channel.
In addition to the individual channel configuration the MkII data packet stores any warning or alarm as
indicated in the table below.
Type
Value
Description
None
0x00
No alarms or warnings set.