It was the altimeter's first flight.
When I picked it up, the power was fluctuating with the status beeps.
Later when I got home the Battery connector on the negative side was deformed.
Which leads me to believe that it was a power loss or brown out.
JD
Mos[/QUOTE
You may have had a loose power wire or clip that made a poor correction, or there could be a bad solder connection on the altimeter.
Really stupid question, but was there any data to download. If the unit was new, PF usually performs a couple bench tests on each unit and leaves it in the altimeter. If you hook it put to a computer and run the download program, that data and some of your flight data should be in the SL-100.
I would then put a 6 or 12 volt led across the main and the drogue circuits and find a vacuum tight container and do a simulated flight. A jam jar with a screw lid and a shop vac might do the trick. Drill a 1/4"-1/2" hole in the jar lid and use the shop vac to pull a vacuum. I would try turning the vacuum on and then hold the hose to the jar top and then while you still have the hose on the top, turn the power switch off. The vacuum in the shop vac will bleed up slower than it pumped out and you should see both LEDs fire. Then hook it up to the computer and see if the pressure trace makes sense. If you, I'd call PF to arrange to send it back for a factory check.
Alternatively you could give it ride as a passenger in an altimeter bay that you know works and just download the data. If it doesn't match the deployment altimeter, you have a problem. Put a 2 ohm load across the pyro outputs and you should also record when the "pyros fire".
Bob