Manual

June 2004 Isis® Sonar User's Manual, Volume 2 146
• Send only Telemetry to Isis
• Speed of Sound
• TPU responder ctrl
• TPU responder freq
• Altimeter
The seven items in the Advanced Settings panel are explained next.
•
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 continuously synchronized with the incoming
time from a separate navigation string being sent to the Isis system via a
serial port.
•
Send K5000 Nav and Telemetry to Isis: Checking this box will send the
navigation data and telemetry from the Klein 5000 system to Isis.
•
Send only Telemetry to Isis: The Klein 5000 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 5000 TPU.
•
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.
Appendix I: Working with Specific Sonars