Pressure Settings; Appended Digiquartz Data Telegram (Va500P) - Valeport VA500 Operating Manual

0430844c - VA500 Altimeter

5.8. Pressure Settings

The pressure sensor fitted to the VA500 measures absolute pressure, i.e. it includes atmospheric pressure. The
pressure tare function allows the atmospheric pressure (as measured by the sensor before deployment) to be
removed from the readings, so the output is simply pressure of water. Note also that by taking a tare reading at
any fixed point in the water column, readings will then be output relative to that point.
# code Followed By:
#009 ;<CR> or ;VALUE<CR>
#010 <CR>
#011 ;ON<CR> or ;OFF<CR>
#012 <CR>
#016 ;Latitude <CR>
#017 <CR>
#018 ;Pressure units<CR>
#019 <CR>
#083 ;0 or 1 or 2 or 3
#084 <CR>

5.9. Appended DigiQuartz Data Telegram (VA500P)

The VA500P can be configured to output an additional DigiQuartz type telegram appended to the conventionally
selected and configure telegram. This allows a separate pressure data telegram to be broadcast to an INS, for
example.
This DigiQuartz type telegram contains the instrument pressure reading in PSI, not corrected for latitude and the
tare NOT applied, i.e.PSIA.
In addition the psia unit can be included in the telegram if required.
These commands are not part of DataLOG x2. You will need to use a Terminal program to configure the
telegram.
See section Appended DigiQuartz Telegram (VP500P)
# Code Followed By
#042 ;0 or ;1
#043 <CR>
;0 or ;1
#044
<CR>
#045
© 2019 Valeport Ltd
Operation
Sets the tare value in systems with pressure fitted.
;<CR> = Makes device take a reading to use as
tare. ;VALUE<CR> = User entered value in units as set
by #018 command.
Returns the tare value
Turns Tare function ON/OFF
Reads Tare mode
Sets Latitude
Reads Latitude
Set to either
0 – dBar
1 – Metres
2 – Feet
Read pressure units
Setup the pressure output format
Where
0=not fitted, 1=PPPP.P, 2=PPP.PP, 3=PP.PPP
Returns the set pressure range
Operation
Enable/Disable DigiQuartz output telegram (appended to existing output)
Read DigiQuartz output (on or off)
Enable\Disable DigiQuartz units (psia) text appended to DigiQuartz output
telegram
Read DigiQuartz units (psia) text appended to DigiQuartz output telegram (on
or off)
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