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Author Topic: P25 and MacbookPro battery -- corrupted files??  (Read 2885 times)

phildog33

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P25 and MacbookPro battery -- corrupted files??
« on: February 18, 2007, 10:13:52 pm »

ON a shoot today with the P25 and Macbook Pro running on its batteries (not plugged in)

Everything went fine until the battery level dropped to 30 mins left....

Then, Total firewire havoc with PhaseBack. Files coming into C1 are half blacked out with purple lines on top. The firewire icon blinking on the back of Phase LCD.. Drops out all the time. Messages in C1 that there is a connection problem.

Has this happened to other ppl??

Does the setup go crazy when the battery level of the laptop gets low???

I thought it was the cable, switched the cable.. and same issues.
Once I switched the battery for ANother battery 100% charged.. I went for another 2 hours no problem.

Wierd
-p
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paul_jones

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P25 and MacbookPro battery -- corrupted files??
« Reply #1 on: February 18, 2007, 10:38:39 pm »

Quote
ON a shoot today with the P25 and Macbook Pro running on its batteries (not plugged in)

Everything went fine until the battery level dropped to 30 mins left....

Then, Total firewire havoc with PhaseBack. Files coming into C1 are half blacked out with purple lines on top. The firewire icon blinking on the back of Phase LCD.. Drops out all the time. Messages in C1 that there is a connection problem.

Has this happened to other ppl??

Does the setup go crazy when the battery level of the laptop gets low???

I thought it was the cable, switched the cable.. and same issues.
Once I switched the battery for ANother battery 100% charged.. I went for another 2 hours no problem.

Wierd
-p
[{POST_SNAPBACK}][/a]

this is because the watts from the new macbooks are too low to run the back, they have lower power than the older powerbooks. new imacs can have the same problem. its quite a well known problem.
all the newer backs(p30, p21,p45) give an option not to power the back off the battery, but the p20 and p25 dont. if they sense the power through the firewire, then they use the fw cord to power the back.
dave at capture intergration has two products to work around this-

-a firewire power isolator- that cuts off the power in the firewire cord, so that back is forced to use its own battery.
[a href=\"http://www.captureintegration.com/sales/exclusives/portisolator.html]http://www.captureintegration.com/sales/ex...rtisolator.html[/url]
and a powered firewire adator, that adds voltage to the cord.
http://www.captureintegration.com/sales/ex.../fwbooster.html

i think phase have there own fw booster, but being a phase product, its expensive.

i was going to use a fw card adaptor, as they arnt powered, but i ordered one ages ago and it hasnt turned up yet (austrailia is out of stock).

i havent had a problem with voltage for a while, only when the battery is really low.

paul
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phildog33

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P25 and MacbookPro battery -- corrupted files??
« Reply #2 on: February 19, 2007, 12:14:42 am »

wow very bad from Apple with the low Firewire power. Thank you for teaching this to us.
-p
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paul_jones

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P25 and MacbookPro battery -- corrupted files??
« Reply #3 on: February 19, 2007, 12:58:13 am »

Quote
wow very bad from Apple with the low Firewire power. Thank you for teaching this to us.
-p
[a href=\"index.php?act=findpost&pid=101610\"][{POST_SNAPBACK}][/a]

its probably to get more battery life out of the macbookpros.

theres more info on this in the phase forums.

paul
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paul_jones

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P25 and MacbookPro battery -- corrupted files??
« Reply #4 on: February 19, 2007, 01:08:30 am »

Quote
its probably to get more battery life out of the macbookpros.

theres more info on this in the phase forums.

paul
[a href=\"index.php?act=findpost&pid=101614\"][{POST_SNAPBACK}][/a]


i just read the 24 inch imac had 15watts of power in the fw port (up from 8 for the other imacs), so that would have fixed that. not sure what the newer smaller imacs are now.

paul
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pss

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P25 and MacbookPro battery -- corrupted files??
« Reply #5 on: February 19, 2007, 11:56:49 am »

hmm...i am on my 3rd macbookpro now (nothing wrong, just kept updating) and i never had that problem....i usually let the MBP power the back as well (which really is dumb, much easier to switch back-batteries then MBP batteries...) and never had this happen....
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