Manual

June 2004 Isis® Sonar User's Manual, Volume 2
51
SEATEX
This template configures the serial port for input from a Seatex
MRU.
CMSSS
This template is used for a special navigation string generated
by German Hydrographic Bureau (BSH) navigation systems. It
is not applicable to other types of navigation input.
HYPACK
This template also appears in the Serial Port Setup dialog box.
Also see
4.2, ‘Serial Port Setup’ in Volume 1, and 6.8,
‘Hypack DDE (Record Only)’
in Volume 1.
POS/MV
This template also appears in the Serial Port Setup dialog box.
Also see
‘4.2 Serial Port Setup,’, Volume 1.
TrackPointII
This template also appears in the Serial Port Setup dialog box.
Also see
4.2, ‘Serial Port Setup,’, Volume 1.
SeaPath
This template also appears in the Serial Port Setup dialog box.
All except CMSSS are selectable from the Serial Port Setup dialog box
(Figure D-1) in Isis software. To specify a CMSSS template, type CMSSS in
the Navigation/Telemetry Template portion of the Serial Port Setup dialog
box.
D.4.1 How Isis Works with NMEA0183 Strings
Isis can interpret several standard NMEA0183 strings, called sentences. To
have Isis use NMEA type of transmissions instead of other types, choose
the NMEA0183 navigation template shown in the Serial Port Setup dialog
box. If you choose NMEA 0183 in the Isis serial port setup dialog box, Isis
ignores standard parsing rules and instead decodes the transmitted string
as a NMEA0183-compatible data packet.
Isis recognizes the following NMEA0183 packet types:
GGA, RMC, GLL, VTG, ZDA, HDM, HDT, SHR, KLA, TSP
In addition, you can add tokens to prevent the use of any specific packet.
For example, if a GPS receiver is transmitting both GGA and GLL packets,
the navigation may jitter between two positions. In such a case, you can
prevent the parsing of GLL by specifying NOGLL in the same template after
NMEA0183. The following tokens prevent the parsing of the respective
packets:
NOGGA, NORMC, NOGLL, NOVTG, NOZDA,
NOHDM, NOHDT, NOSHR, NOKLA, NOTSP
Appendix D: Serial Interfaces