Sounder instrument

Sounder instrument


After clicking the "Start" button the simulation will start, and NMEA sentences will be sent to the selected output port of the PC, until the "Stop" button is pressed. Note that only those NMEA sentences will be sent that are checked in the "NMEA sentences" panel.
All sentences are shown in the I/O Port Monitor as they are output. When logging is ON (toolbar option), the sentences will also be written to the user selected log file.
Clicking the "Stop" button will suspend the operation, until "Start" is clicked again.
When the Transmit Interval is set to 0.0 the sentences are output as "single shot" each time you click the "Start" button.
Clicking the little X top-right will exit the object and save optionally all current values, so that next time the instrument is used it can continue where it stopped. Note: saving is an optional setting in the General Settings.
A short description of each field follows.

Object tag

1. Object tag
Optional, to give this instrument a name for easy identification.

Water depth

2. Water depth
The water depth in feet, meters or fathoms.
Percentage of random depth variation
To make the simulation a bit more realistic you can enter a Percentage of random depth variation. The depth will then vary randomly with this percentage.

Offset from transducer

3. Offset from transducer
The offset to correct the location of the transducer, relative to the waterline or to the keel.

Maximum range scale

4. Maximum range scale
Maximum range scale. This parameter is valid for the DBT sentence from NMEA version 2.30 and higher.
You can set the NMEA version in the General Settings.


5. Checksum
Check this if you want a checksum added to each sentence

Sentence Identifier

6. Sentence Identifier
To set the NMEA0183 sentence identifier. Set this to either
  • $II - Integrated Instrument
  • Native - $SD
  • Proprietary - create your own in the text box

Sentence formatters

7. Sentence formatters
Select the NMEA 0183 sentences you want to simulate and to be sent to the output port