NEMA Source for DPH Displayed.

Hi all, could you advise which NEMA string is used for the display of the DPH value on the Instruments within qtVlm please?

At the moment, I am receiving both DBT & DPT via my NEMA bridge:

$SDDBT,6.14,f,1.87,M,1.02,F*38
$SDDPT,1.85,-1.7,*6C

If using the DPT string only, is it possible to enable the Instrument to display the corrected depth - to give either depth of water or depth below keel as appropriate?

Many Thanks

Hi,
Both messages are understood by qtVlm. If your system somehow sends both I would recommend to filter one out, otherwise if the values are not the same you may have a mess of values in the instrument.
Regards,
Philippe

Thanks for the rapid response. So I have ammended my NEMA bridge, such that it only now outputs the DPT depth string.

Reviewing the DPH instrument displayed, it is still only showing the base value, rather than the corrected value taking account of the offset applied to reflect the mounting depth of the sensor.

$SDDPT,1.85,-1.7,*6C

Taking the example I posted previously, the depth reported by the transducer is 1.85m (and that value is shown as the DPH value on the instrument display), however the second value is the calibration which should be applied to give depth value from the transducer, to give either depth below keel/depth of water (depending on whether the offset is positive/negative).

So to compare with my other instruments - I am displaying a depth of 0.15m below the keel (1.85 - 1.7m).

Is this something that could be ammended/corrected in a future release?

Best Regards

Tony.

Sure, I took a note to add this.
Thanks for reporting
Philippe.