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IEEE 1394 - Taking a voltage reading

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#1
How do I accomplish this? I'm trying to take a voltage reading for the IEEE 1394 headers on my motherboard. I'll be using this digital multimeter. To take this reading, should I set it to 20v?

Using this as a reference: VIA 1394 brochure

It seems as if I should be able to take the positive to the white (volt. +) and the negative to the black (volt. -). I could be totally off, hence my asking here. I know for certain there are electronics wizards here!

Another question I'll inevitably be asking is: can I take this reading with the PC powered on? Or is it possible (and maybe safer) to take the reading with the power supply on and the computer powered off.

Thanks in advance!

EDIT: The reason I'm going about it in this way is because the only Firewire device I have around (that I'm aware of) is an old camcorder that doesn't have current enough drivers.
 
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Joined
Dec 27, 2008
Messages
587 (0.18/day)
Likes
104
System Name New / Breakin' the Lol
Processor i5 2500k / Athlon64 X2 4200+ (65W)
Motherboard P8Z68-V PRO/GEN3 / Asus M2N4-SLI
Cooling / Air (1 x 250mm, 2 x 120mm, 1 x 90mm)
Memory DDR3-1600 (8GB) / Crucial Ballistix Tracer PC2-6400 (2gb)
Video Card(s) / Visiontek 4870
Storage HD103SJ /
Display(s) Viewsonic 22" VX2240W
Case Xigmatek Midgard II / Thermaltake VA8003SWA
Power Supply PC Power & Cooling Silencer 750W
#2
Does anyone know of a better place to post this (section of this forum or another forum)?
 
Joined
Dec 27, 2008
Messages
587 (0.18/day)
Likes
104
System Name New / Breakin' the Lol
Processor i5 2500k / Athlon64 X2 4200+ (65W)
Motherboard P8Z68-V PRO/GEN3 / Asus M2N4-SLI
Cooling / Air (1 x 250mm, 2 x 120mm, 1 x 90mm)
Memory DDR3-1600 (8GB) / Crucial Ballistix Tracer PC2-6400 (2gb)
Video Card(s) / Visiontek 4870
Storage HD103SJ /
Display(s) Viewsonic 22" VX2240W
Case Xigmatek Midgard II / Thermaltake VA8003SWA
Power Supply PC Power & Cooling Silencer 750W
#3
Could a mod move this thread to Electronics? I didn't realize there was a forum with an electronics section.
 
Joined
Dec 27, 2008
Messages
587 (0.18/day)
Likes
104
System Name New / Breakin' the Lol
Processor i5 2500k / Athlon64 X2 4200+ (65W)
Motherboard P8Z68-V PRO/GEN3 / Asus M2N4-SLI
Cooling / Air (1 x 250mm, 2 x 120mm, 1 x 90mm)
Memory DDR3-1600 (8GB) / Crucial Ballistix Tracer PC2-6400 (2gb)
Video Card(s) / Visiontek 4870
Storage HD103SJ /
Display(s) Viewsonic 22" VX2240W
Case Xigmatek Midgard II / Thermaltake VA8003SWA
Power Supply PC Power & Cooling Silencer 750W
#4
I could also just start a new thread. Would that be better?