Varicam transfer rates

[Mariusz]

Varicam DVCPRO100 runs at 100Mb/s so you can use regular 400Mb/s drives.

[Gary Adcock]

[Mariusz] “Varicam DVCPRO100 runs at 100Mb/s so you can use regular 400Mb/s drives.”

For playback at 24p maybe, I would never tell someone that they can capture DVCPROHD to a single Fw400 drive.

in theory that a single drive can do it is not necessarily what the real world functionality of a single drive is.

Note also that the DVCPROHD FW connection takes over the entire FW buss and requires that the user have more than one
FW buss on their computer ( and NO it does not have 2- it only came with one.)

gary adcock
Studio37
HD and Film Consultation

[Mariusz]

Hi,

I am using 400 speed FW drives almost everyday with AJ-HD1200A DVCPRO HD deck and it works OK.
800 speed drive is better because it is faster and like Gary said it is on different bus. There is a Belkin FW adapter cable that goes FW400 to FW800 and thus it is possible to use 400 speed drives on 800bus.
Another cable worth to mention is 6pin to 6pin FW adapter retrofit cable that has no power connection inside and prevents burning IEEE1394 board inside deck while hot swapping.
Regards,

Mariusz

[Gary Adcock]

[Mariusz] “800 speed drive is better because it is faster and like Gary said it is on different bus. There is a Belkin FW adapter cable that goes FW400 to FW800 and thus it is possible to use 400 speed drives on 800bus.”

Actually that is just the point I was trying NOT to make.

there is only one FW buss on any mac computer – FW 400 & FW800 ports on ALL MAC’s are the same FW Buss.
Caution —YOU SHOULD NEVER USE a FW400 to FW800 adapter when using the 1200a deck it will short out the FW board in the deck.

and what good is a 6 pin to 4 pin adaptor cable when neither your mac or the 1200a use the smaller connection?

gary adcock
Studio37
HD and Film Consultation

[Mariusz]

Firewire 800 and 400 is backward compatible.
I did not say 4pin to 6pin cable. I was talking about adapter cable that has both 6 pin ends but power is not going through. It is called FireWire port isolator and does not pass bus power.
1200A does not need power through Firewire and most of the time that is the reason why they are damaged boards.

Mariusz

[Gary Adcock]

[Mariusz] “Firewire 800 and 400 is backward compatible.”

Only for Hard Drives
Panasonic recommends that you DO NOT use a FW 800 -FW 400 conversion cable.

gary adcock
Studio37
HD and Film Consultation