ATLAS North America Proprietary
Sea Scan ARC Scout MKII Operations Manual
1 of 1
Page: 57
Issue: 1.2.4
SCTM2-OPS
Operations Manual
operating temperature the system will adjust the transmit power which will result in a reduction of
transmit strength and therefore maximum range.
Below is a table illustrating the temperature thresholds.
Temperature
Flag
Notes
< 50
o
C
None
Normal operating temperature.
>= 50
o
C and < 60
o
C
Warning
THI
Warning is issued. Transmit power is
attenuated.
>= 60
o
C
Alarm
THI
Alarm is issued. Data collection is
halted. System reset is required to clear
the alarm flag.
If the automatic management fails to keep the temperature stable and the temperature rises above 50o C
the Scout MkII will raise a warning flag. If the temperature rises to 60o C or beyond the system will raise an
alarm and shutdown data collection until the temperature lowers and the system is reset.
9
Time Synchronization
The Scout MkII starts with its clock set to January 1st 2016 at midnight. The system contains a real time
clock, however the clock does not have a battery backup. If you require the time and date to be set there
are several methods of accomplishing this through the use of NMEA 0183 formatted data/commands or the
web interface.
When using the NMEA sentences to synchronize the time choose from the SYNC, RMC, ZDA, or AUV
sentences. The RMC, ZDA, and AUV sentences also contain data and typically are sent by the host system
several times per second, therefore these sentences can be configured to set the system time in the Scout
MkII's Application Settings. The SYNC command's sole purpose is to set the system time and therefore
cannot be turned off. The other sentences may be sent in combination and could have a significant time
offset from each other. In this case synchronizing time on every string with time in it would cause erratic
time stamps.
When using the web interface to set the time set the
time
variable when sending a request for the
sonar.html web page. Please see the Web Interface Control section for more detail.
The Scout MkII's time will be set if it is 1 or more seconds out of sync with the requested synchronization
time. This prevents the time from jumping around by +/- 1 second which can happen if the computer that
is synchronizing time is running an operating system such as Windows.
10
Important Things To Note
This section contains important notes pertaining to setup and operation of the system.
10.1
Heat Dissipation
The Scout MkII Side Scan Sonar is a high performance system. During operation the Scout MkII can generate
a significant amount of heat. The Scout MkII system is equipped with internal heat sinks that transfer
thermal energy to the outer enclosure (primarily to the mounting surface). For maximum performance it is
recommended that the system is installed on an adequate thermal interface (generally an aluminum
chassis plate is sufficient). In cases of excess temperature the system will automatically adjust the transmit
