Topic: 722 battery

[terrapinj]

perhaps, i just wanted everyone to be aware of the potential problem - if you have a generic battery as well perhaps put them both on and see how much the locking button comes up and if you can slide either off

again the sony still takes some pressure to get it off it won't just slide off on its own but it can apparently be done with a few kicks to the bag as well

[terrapinj]

I ran Photorec and it recovered 3 wav files

however none of the 3 files were the track that was lost and 1 or 2 seem to be several months old and files that i already have fully intact - appears i have lost the PBS set unless anyone has any other suggestions?

i also tried pigeron's wave header repair utility
i copied the t320.wav in question to a new folder on the desktop then put the fixwave.exe file and the .bat file in the directory but it says it cannot read the wav header - should I try to put the .exe and .bat on the 722 directly?

[boojum]

should I try to put the .exe and .bat on the 722 directly?

I would not.  You have no idea what the program calls or what resources it needs.  It might just hurt your SD.   You can do the same job with the file on your PC in isolation from your SD.  It is exactly the same file in both places.  I would never try to recover a file or manipulate it in any way on the SD.  As the IBM manuals say, "Results are unpredictable."  We do not like unpredictable, do we.   

[terrapinj]

should I try to put the .exe and .bat on the 722 directly?

I would not.  You have no idea what the program calls or what resources it needs.  It might just hurt your SD.   You can do the same job with the file on your PC in isolation from your SD.  It is exactly the same file in both places.  I would never try to recover a file or manipulate it in any way on the SD.  As the IBM manuals say, "Results are unpredictable."  We do not like unpredictable, do we.   

thats what i figured, i just wanted to make sure i was using the utility properly - looks like a lost cause at this point

[it-goes-to-eleven]

Repeat - do not write or record to the 7xx.  That includes copying anything to it.

Your audio IS on the disk.  If you never delete files from your 7xx and only format (as it should be), it should be the next sequential blocks on the disk after t319.

How large is the t320 file you copied from the 7xx?

You might call SD up and ask them.  They have advertised that this isn't supposed to happen. You shouldn't lose more than a few seconds of audio when power is lost.

[terrapinj]

Repeat - do not write or record to the 7xx.  That includes copying anything to it.

Your audio IS on the disk.  If you never delete files from your 7xx and only format (as it should be), it should be the next sequential blocks on the disk after t319.

How large is the t320 file you copied from the 7xx?

You might call SD up and ask them.  They have advertised that this isn't supposed to happen. You shouldn't lose more than a few seconds of audio when power is lost.

the t320 file is 0kb - took a matter of seconds to copy it off the 722 drive which wasn't right

i'll try to give SD a call if I can today - i've got a show im archiving for tonight so unfortunately i will have to write to the drive tonight

[it-goes-to-eleven]

I am surprised photorec did not find the audio...

Do you have any linux capability?  I'd suggest using dd to grab the raw blocks off the drive starting at the beginning of the empty file and continuing for approximately however long it should be based on the sample rate&depth. You could also take an image of the entire drive but that would be 40gig.

[terrapinj]

I am surprised photorec did not find the audio...

Do you have any linux capability?  I'd suggest using dd to grab the raw blocks off the drive starting at the beginning of the empty file and continuing for approximately however long it should be based on the sample rate&depth. You could also take an image of the entire drive but that would be 40gig.

no linux - i thought for sure photorec found the file until i listened to what was actually recovered

how long would taking an image of the drive take? i'll have about an hour when i get home before i have to leave for the other show - and i've got plenty of space on my other HDD in my computer

thanks for the suggestions

[it-goes-to-eleven]

Unfortunately the full 40gb will take a long time, probably a couple hours.  It would take a lot less time if the drive was directly connected.

You might have more luck with photorec with the 'keep corrupted files' option. I doubt the firewire interface is a problem.

If you had enough CF then you'd be able to keep the drive intact..

[nedstruzz]

Will this sucker work with the 722/744's?

http://www.bhphotovideo.com/c/product/465330-REG/Impact_NPF975_NP_F975_Lithium_Ion_Battery.html

[terrapinj]

Will this sucker work with the 722/744's?

http://www.bhphotovideo.com/c/product/465330-REG/Impact_NPF975_NP_F975_Lithium_Ion_Battery.html

yeah - looks like its 7600mAh which is a larger capacity than the typical 6600mAh as well

i just bought a couple of these from amazon for about $30 each - slightly smaller capacity but I still got two for less than that 1 battery

http://www.amazon.com/gp/product/B000K7EQPS

[nedstruzz]

Heres a 7800mAh but it says replacement for 970/B.  Any ideas on if this works?  I like the idea of gettying two smaller amp batteries for the same price though. 

http://thomasdistributing.com/shop/lenmar-lis970p-72-volt-7800mah-batterybrrechargeable-lithium-ionbr-replaces-sony-npf950-npf960-and-f970b-p-1255.html?SP_id=&osCsid=e5mvh6hf2q45s33mfn09gb9qb2

I guess my real question should be, how long will a 6900mAh battery run a 744 using four channels and how long will a 7800mAh batter run a 744 recording four channels? 

Any ideas?

[terrapinj]

Heres a 7800mAh but it says replacement for 970/B.  Any ideas on if this works?  I like the idea of gettying two smaller amp batteries for the same price though. 

http://thomasdistributing.com/shop/lenmar-lis970p-72-volt-7800mah-batterybrrechargeable-lithium-ionbr-replaces-sony-npf950-npf960-and-f970b-p-1255.html?SP_id=&osCsid=e5mvh6hf2q45s33mfn09gb9qb2

they all say replacement if they are not genuine Sony's - that one looks like it will work as well though

[cfox]

http://thomasdistributing.com/shop/lenmar-lis970p-72-volt-7800mah-batterybrrechargeable-lithium-ionbr-replaces-sony-npf950-npf960-and-f970b-p-1255.html?SP_id=&osCsid=e5mvh6hf2q45s33mfn09gb9qb2

I got this battery, I can run a complete show + plus latenite with the same battery...

[boojum]

I have the same battery.  I use it when I am not sure the regular 3.5 - 4.0 hour battery will last.  Looks like it could do 6.0 or more hours.