How Much Long Has To Be The Firewire Cable For Live Streaming Hd Signal?

[shiny4]

TODAY I have resoved my case!:laugh: :laugh: :laugh:
i have had a lot of problems whit my camera when i connected it to my macbookpro.
i have had this problems:

1.)no live streaming in all hd signal(not only in 720PN.....i know!!!) whit final cut 5.1.4 and with scopebox.no live preview monitor.

2.)when i transfered my p2 card from the hvx200 to my computer by firewire it was always unmounted on my desktop.

i have always used a long(about 32 feet)firewire cable but i not suspect about it becouse i have had not problems when i used my camera in standard definition mode or when i have transfered my p2 card to external hard disk using 1394 HOST mode.

today i have used a short firewire cable and PUFFF!!!!!!
NOW i can streaming my hd signal in final cut and scopebox!
NOW my p2 card after few second appears on my desktop!

for me is very strange but now my question for you is ....
HOW MUCH LONG HAS TO BE A FIREWIRE CABLE FOR NOT HAVE THIS PROBLEM?rogar-Smoke(DBG):
do you think that is this the question or there are other reason?
i think that the firewire is the question becouse i have resolved my case changed the cable but not becouse it was broken.i still can use it but not when i work in HD.

I wait your opinions

 

[Andreas]

Firewire 4pin to 4pin cable should be 4.5 feet (edit: sorry, I mean meters. Or 15 feet) max.

If you need more you should look to:
http://www.lairdtelemedia.com/Produ...lass=FIREAD&mfg=Laird+Telemedia&search=0&off=


The optimum setup is: sending device -> 3' jumper -> LTM-FDR -> 30' firewire cable (6pin to 6pin) -> LTM-FDR -> 30' firewire cable -> LTM-FDR -> 3' jumper cable.

I got in contact with them recently so the info comes straight from Laird.

best
Andreas

 

[shiny4]

thanks andreas!
i want to ask you if i need of the the same length(max 15 feet) if i use a firewire cable 6 pin to 4 pin instead of 4pin to 4 pin?
best
ivan

 

[THoff]

The official maximum cable length is the same regardless of the connector type.

It's been mentioned many times here that longer cables may work, but typically only for DV25 transfers. That's why Laird and other companies say you can't use them for anything requiring higher data rates, such as hard drives or in our case DVCProHD streaming.