Grass Valley Forums Facebook   Twitter   YouTube  

Go Back   Grass Valley Forums > Converters > ADVC

Reply
 
Thread Tools Display Modes
Old 02-12-2008, 02:21 AM   #1
digitaldave1984
Guest
 
Posts: n/a
Default ADVC110, MacbookPro, Firewire drive

Getting ready to order the ADVC110 to use with my laptop that has a single firewire400 port. I currently have a fw400 external drive and an M-Audio FW410 connected. I don't see that the ADVC110 has a fw pass-thru, so it would connect at the end of the cabling.
Can I expect a problem with this scenario?
In addition, naturally() I want the capture to go to the external FW drive.
Murphys law tells me I might have an issue or 2 to resolve, usually solved by time, frustration and money.
So, from those of you that have already gone down this road, will this work, and if not, what advice can I get to make this work?
(I have scanned all the messages in this forum and have not found the answer)

TIA
Dave Harding
  Reply With Quote
Old 02-12-2008, 06:28 PM   #2
GrassValley_KH
Mr Sparkle
 
Join Date: Apr 2007
Location: San Jose, CA
Posts: 3,748
Default

Sorry, but it's not really a good idea to be pairing, daisy-chaining or otherwise splitting FireWire with an ADVC110 and other devices.

The best way to use it is to isolate the ADVC110 unit on its own FireWire connection. Since your laptop only has one port, it'll mean unplugging the other two devices. It will save you a lot of headaches in the long run.
GrassValley_KH is offline   Reply With Quote
Old 02-12-2008, 08:58 PM   #3
digitaldave1984
Guest
 
Posts: n/a
Default

I thought that would be the case. Anyone have a recommendation for an ExpressCard/34 firewire adapter?
  Reply With Quote
Old 02-12-2008, 09:49 PM   #4
tizoast
Guest
 
Posts: n/a
Default

Quote:
Originally Posted by GrassValley_KH View Post
Sorry, but it's not really a good idea to be pairing, daisy-chaining or otherwise splitting FireWire with an ADVC110 and other devices.
Why does every FireWire doc I read say that it's OK to chain up to 64 devices together?
  Reply With Quote
Old 02-12-2008, 10:15 PM   #5
GrassValley_BH
Demystifier/Analogizer
 
Join Date: Apr 2007
Location: Hillsboro, OR
Posts: 5,785
Default

Quote:
Originally Posted by tizoast View Post
Why does every FireWire doc I read say that it's OK to chain up to 64 devices together?
Because they didn't take streaming video into account there...

Sure, you can chain a whole bunch of FireWire devices together, heck I've had 8 FireWire-IDE bridge boards daisy-chained. But it didn't work well... Eventually I ditched that setup.

Anyway, the problem is that DV transfer requires a constant 25 Mbps bandwidth. It can't be 40 Mbps now and 10 Mbps next. It needs a steady 25 Mbps transfer so every frame gets to the destination on-time. Unlike Internet streaming video, the receiving device can't buffer the data and even if it could, if the bandwidth was not steady at some point it would still run out of data.

When you daisy-chain high-bandwidth devices like hard drives in the chain, you can end up with a situation where a few devices "hog" the bus bandwidth and interrupt the steady flow of DV data. SCSI used to have a similar problem back in the day...
GrassValley_BH is offline   Reply With Quote
Old 02-13-2008, 01:37 AM   #6
tizoast
Guest
 
Posts: n/a
Default

That certainly makes sense. Thanks for the explanation.
  Reply With Quote
Reply
 
Go Back   Grass Valley Forums > Converters > ADVC
 

Bookmarks

Thread Tools
Display Modes

Similar Threads
Thread Thread Starter Forum Replies Last Post
ADVC110 - Firewire Expresscard dolaf ADVC 1 12-02-2008 07:49 PM
New ADVC 110 Windows XP Pro problem need help. jsterner ADVC 10 09-05-2008 08:52 PM
Can ADVC110 Split Firewire signal? hipod1 ADVC 1 06-12-2008 12:37 AM
ADVC110 Switching modes (analog to digital) PeterS ADVC 2 09-17-2007 10:25 PM
ADVC110 Problems AldoPalumbo ADVC 3 08-16-2007 08:28 PM

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are Off
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +1. The time now is 04:52 AM.


Copyright 2014 Belden Inc. All rights reserved.