Cypres Power

[kai2k1 0]

At the end of a day of jumping, should you turn your cypres off manually or just wait for it to go off on its own?

There's no truer sense of flying than sky diving," Scott Cowan

[meatbomb 0]

You should leave it to turn itself off. You use up more battery by turning it off manually. (according to the Airtec Cypres manual).

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Swoopert, CS-Aiiiiiii!
Piccies

[sundevil777 102]

Not true. Many times has this discussion happened.

Turn it off at the end of the day manually, especially if you drive home it will likely go into jump/active mode, using more power.

People are sick and tired of being told that ordinary and decent people are fed up in this country with being sick and tired. I’m certainly not, and I’m sick and tired of being told that I am

[firstime 0]

great question!!! by the response.. I guess we should
do the odd finger thingee....

[EDYDO 0]

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At the end of a day of jumping, should you turn your cypres off manually or just wait for it to go off on its own?

My manual says to turn it off if you will be flying somewhere or driving in hilly terrain. I leave mine to turn itself off at all other times and I easily get the two year battery life.

Ed

[Icon134 0]

As it was described to me... if driving up and down hills on the return home turn it off. Because during the drive it might go into a higher power mode.

If you live close to the DZ (i.e. not many hills) or store it at the DZ then leave it on as it requires more power to illuminate the LED then it takes to leave it to power down on its own.

If you are using rented gear and you show up in the morning to a as yet unused rig (for the day) with a Cypress on I was recommended to turn it off then back on before using it. Because it is possible that someone might have turned it on the night before for a sunset load... that said... if its on when the plane takes off then it will not turn off until after you land.

sorry... info is still fresh in my mind... from the very in depth briefing one of my instructors (Stuart Cavanaugh) he also gave me a thorough briefing on RSL's very informative.

Scott

Livin' on the Edge... sleeping with my rigger's wife...

[sundevil777 102]

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it requires more power to illuminate the LED then it takes to leave it to power down on its own.

A guy a long while back with a lot of time and curiosity measured the current draw while in various modes, and proved that to be wrong.

People are sick and tired of being told that ordinary and decent people are fed up in this country with being sick and tired. I’m certainly not, and I’m sick and tired of being told that I am

[jjiimmyyt 0]

Is there a link? This is something I suspected but at the time didn't have the data to discuss properly.

"This isn't an iron lung, people. You can actually disconnect and not die." -Dave

[indyz 1]

Airtec GmbH Cypres AAD Power Consumption

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Brian

[sundevil777 102]

Thanks for the link. That was the one I was remembering.

So, consider that the unit uses about/at most around 100 times less power at 'rest' compared to when the LED is on/calibrating. Turning off the unit takes, say 10 seconds or so. So if the unit were on for 100*10=1000 seconds or about 16 minutes, then you are better to turn it off. Even with the assumptions that I haven't listed, or even if it is 1000 times less power, then it would be about 2.5 hours for the break even point. So I think it is fairly safe to make the obvious conclusion.

The reason why the battery voltage is lower when the ammeter was connected is because a parallel circuit is established, the measurement affects the system by draining some power. A more expensive meter with a higher impedence would use less.

People are sick and tired of being told that ordinary and decent people are fed up in this country with being sick and tired. I’m certainly not, and I’m sick and tired of being told that I am