Triton Isis - Manual (Page 147)

June 2004 Isis® Sonar User's Manual, Volume 2 137
Use Isis time rather than TPU time:
In some versions of the Klein TPU the time is only set once when the TPU first receives
a time update from its navigation data string. Checking this option forces the sonar ping
time recorded in the XTF file to be continously synchronized with the incoming time from
a separate navigation string being sent to the Isis system via a serial port.
Send K3000 Nav and Telemetry to Isis:
Checking this box will send the navigation data and telemetry from the Klein 3000
system to Isis.
Send only Telemetry to Isis:
The Klein 3000 sonar requires navigation information in a particular format. If the
navigation data you require in your XTF file needs to be in a different format, or if you
want to reference a different position, then you can use this option to have Isis log
different navigation data. For example, you may want to have the XTF file contain a
position in local grid coordinates rather than Lat/Long.
A variation on the Send only Telemetry to Isis parameter is indicated by the prompt
below the template field. You can, as the prompt says, disable Klein's heading by
replacing ‘
h’ with ‘X’. You might want to do this if the heading sensor in the Klein towfish
is in error (perhaps it has not been calibrated). Editing the Send only Telemetry to Isis
template in this way will disable the heading information from the towfish heading sensor
and enable you to use Isis's estimate of the towfish heading derived from navigation
Course Made Good (CMG). In fact, you can disable any of the Klein telemetry or
navigation data in this way. Refer to the section in the Isis manual that describes the
meaning of the various navigation template tokens in Isis.
Speed of Sound:
Changes the default speed of sound used in the Klein 3000 TPU.
Tow cable Length:
Adjusts settings within the TPU for different lengths of tow cable, see the Klein 3000
manual for details.
TPU responder ctrl:
Changes the method by which the Klein system determines the navigation responder
ping rate. See the Klein manual for details.
TPU responder freq:
Sets the towfish navigation responder frequency. See the Klein manual for details.
Altimeter:
Determines whether the Altimeter transduscer in the Klein towfish is Active (transmits
and receives) or
Passive (receives only). See the Klein manual.
Appendix I: Working with Specific Sonars