Doc. P/N:
WSP-009-008
Version: V1.3
Issue Date: April 2014
Operator Manual
Frequently Asked Questions (FAQs)
59
9.1
The system is transmitting too slowly, how can I speed it up?
Remember that the WASSP system must acquire twice the depth of standard sounders to enable the
full seafloor profile across 120°. If the entire profile is to be captured, the ping rate will need to be at
least half that of a standard single beam sounder.
Manually adjusting the range dial will increase the ping rate significantly but will result in the loss of
seafloor information, including break up of the seafloor data on the charting 3D display after a point. If
you are only interested in the centre beam of the Triple Beam display, the range dial can be manually
reduced to just over half the current depth in metres. The optimal range is twice the current depth in
metres. The range dial should normally be set to automatic (green digital display).
Other programs running at the same time as the WASSP program consume processing power and take
processing time away from the WASSP system, slowing down the rate of transmission. For optimal
performance, ensure WASSP programs are the only applications running.
9.2
Why does the range not change on the display when I move the Range
Dial?
Double-click each acoustic viewing mode (Sonar, Single / Triple Beam, Sidescan displays) to reset the
view so that automatic range control is re-enabled. The range continues to track the range dial while
in this mode. If any zooming is done with the wheel mouse then automatic range control will be
disabled again until you once again double-click on the appropriate view.
9.3
Why is no seafloor profile generated on the charting displays after the
system initially starts transmitting?
Check that the NMEA data input is being received and that the communications ports are configured
correctly. If the range for data collection is too small, the system cannot acquire the seafloor and
cannot track the range automatically. Enter the manual range mode and set the range deep enough to
acquire the seafloor before returning to the automatic range mode. Also check that seafloor mapping
is enabled (see “2.10 Mapping Options” on page 8).
9.4
Why do gaps appear between the swath footprints on the charting
displays?
There are multiple possibilities here:
►
The vessel may be travelling too fast to map the seafloor in this depth of water.
►
The range setting could be set much larger than necessary and as a result the system is
transmitting slower than is optimal.
►
The WASSP Processor is giving processing power to another operation (other than the WASSP
program) causing processing of sounding information to take longer, resulting in a slowed
transmission rate of the WASSP system.
►
The GPS data has come in at irregular intervals.
►
The WASSP system has stopped. See Question 9.5.
►
The GPS data source may have dropped out completely, preventing the system from mapping
the seafloor data to its appropriate location. Ensure an isolation device is being used to convert
the current loop NMEA to RS-232.
►
The seafloor detection may have briefly failed due to aeration or excess noise.
