If, after startup, one LED flashes red every 4 seconds,
there is a problem. Possibly, the SD card is full or there are
already 10 deployment data files on the card. Remove the
SD card, delete any files on it and try again.
The F-POD has an accurate internal clock that has been set to UTC
(Coordinated Universal Time) and the left LED will now briefly flash
green every minute and continue to flash if there is data to be written to
the SD card, e.g. from any local ultrasound noise from sources such as
fluorescent lighting or laptops.
5. Wait until you see the LED briefly flash green on the minute rollover to
confirm that the POD is running.
Checking the POD starts, runs and stops
If you want to check that the POD runs and records data before you start a
deployment, you can do the following quick test:
1. Start the POD as above.
2. Stroke the hydrophone housing a few times with your finger in a simple
sequence such as 1 stroke, pause, 2 strokes, pause, 3 strokes.
3. Stop the POD (see Stopping the POD on page 19).
4. View the data in FPOD.exe (see the F-POD Software Guide). You
should see your sequence if you view the data at 50 ms time resolution.
For example:
Closing the POD
The lid is supplied with two O-rings. The O-rings have been lightly
lubricated using a PTFE dry-lube oil to ensure that the lid tightens
smoothly.
Tip: If you want to lubricate the O-rings before deployment, using a dry-
lube lubricant minimises stickiness that might attract dust and grit.
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