Valeport SWiFT, Руководство по эксплуатации

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Operation
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2021
– Valeport Ltd
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The magnitude of the data received increases when the supplied fluorescent target is held at
45° to the sensor window:
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By altering the angle of the target and the distance from the sensor, the magnitude of the
reading should change thereby showing the correct operation of the sensor.
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If the test target is missing then a piece of good quality white paper can be used.
6.8 Tare
The pressure Tare of the instrument is automatically updated and applied when a GPS fix is
obtained.
The Tare value is stored, in dBar, in the VPD2 file header with a time and date stamp of when it
was observed.
It is applied to the recorded pressure data.
6.9 Do Not Deploy Flag
In Smart Profile Mode and when the SWiFT is on the surface, a message is broadcast every 10
seconds. Within this message is a flag to indicate if the SWiFT is ready to be deployed, i.e. is a file
created and is valid data going to be recorded.
There are 4 instances when the flag will be set to 0 (zero) and, therefore, the SWiFT will not be in a
correct state to be deployed, it will not record data. Ocean will attempt to recover the situation
using a specific reset command.
1.
The GPS is off e.g. USB cable plugged in.
2.
The GPS Clock is set to Year 80.
2.1.
Reset the GPS, make sure you have a recent and valid GPS fix. A clear view of the sky
will be required.
3.
Date from GPS is NOT greater than 1/1/2018.
3.1.
Reset the GPS, make sure you have a recent and valid GPS fix. A clear view of the sky
will be required.
4.
Pressure reading is greater than the Trigger Point. If there is a small Tare value taken from a
normal atmospheric value or Tare mode is turned off.
4.1.
Turn the SWiFT off and back on again, ensure you have a valid GPS fix. This will cause a
new file to be created and a Tare value recorded.
When the Flag is set to 0 a warning message is shown in Ocean.
The most usual reason for this error status is an incorrect GPS update. Try moving the SWiFT to
an area of open sky and ensure a valid GPS fix has been received. Switch off and back on again
and monitor the flag.