On Apr 5, 11:22*am, JS wrote:
You're right, it's about 100 hours.
* It's just another thing to deal with at Annual time. For many people
using "clear log" at Annual is sufficient to keep the gremlins away.
But if you fly a lot, that isn't enough. Perhaps stick a post-it note
in the logbook to remind you of when the next "clear log" is due...
* SPOT batteries should get changed at each Annual too. I put 200
hours on the 2 Lithium AAs (version 1) with no problem, but doubt I'd
push it another year.
* At the bottom is a way to make and test a log without flying, to
check 302 security.
Jim

Clearing the flight log memory in a 302 or 302A
This may help reduce flight log security issues on future flights.
Important Note: This will erase all flight logs in memory!
1. * * *Connect the 302 or 302A to a PC using the RS-232 serial cable that
was supplied with the 302.
2. * * *Power the 302 or 302A with 12 volts and make sure the unit is
turned-on. *The GPS antenna does not need to be connected.
3. * * *Run a terminal emulator program on the PC. *A good one to use is
HyperTerminal. *It is included with most versions of Windows. *To
access it go to:
o * * * Start Menu / All Programs / Accessories / Communications /
HyperTerminal
4. * * *In the "New Connections" window enter "302" for the Connection Name
and then click the OK button.
5. * * *In the "Connect To" window, set the "Connect using" parameter to
match the desired communications port. *This is the port which the
RS-232 serial cable is connecting with. *It is usually COM1, COM2,
etc. and will vary from PC to PC. *Then click the OK button.
6. * * *In the "COMx Properties" window set the parameters as specified
below and then click the OK button:
o * * * Baud Rate: 4800
o * * * Data Bits: 8
o * * * Parity: None
o * * * Stop Bits: 1
o * * * Flow Control: None
7. * * *You should now see GPS data sentences appearing in the
HyperTerminal window.
8. * * *Hold the "Ctrl" button on your computer's keyboard and hit the "c"
button (Ctrl-c). *The flow of GPS data should stop.
9. * * *At the "cmd" prompt type: "clear log" and hit the Enter key. *I
don't think there is any acknowledgement from the 302 other than that
the "cmd" prompt reappears.

Checking the 302 logger with HyperTerminal:

* Connect as above
Ctrl C
Type START
Allow it to log 10 minutes.
Type STOP
* Then download the log with the CAI 302 utility and check security.

Thanks JS. Somehow, I though the point of the memory upgrade was to
avoid having to do this...

-T8