IEEE 1394 - Taking a voltage reading

OnePostWonder · Sep 7, 2012, 01:11 AM

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.

OnePostWonder · Sep 20, 2012, 01:24 AM

Does anyone know of a better place to post this (section of this forum or another forum)?

OnePostWonder · Nov 23, 2012, 12:48 AM

Could a mod move this thread to Electronics? I didn't realize there was a forum with an electronics section.

OnePostWonder · Nov 24, 2012, 01:28 AM

I could also just start a new thread. Would that be better?

Sep 7, 2012, 01:11 AM	#1
OnePostWonder Join Date: Dec 2008 Posts: 486 (0.30/day) Thanks: 61 Thanked 90 Times in 71 Posts System Specs	IEEE 1394 - Taking a voltage reading 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. Last edited by OnePostWonder; Sep 20, 2012 at 01:54 AM. Reason: Context

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:	/ Visiontek 4870
Hard Disk:	HD103SJ /
CRT/LCD Model:	Viewsonic 22" VX2240W
Case:	Xigmatek Midgard II / Thermaltake VA8003SWA
PSU:	PC Power & Cooling Silencer 750W

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:	/ Visiontek 4870
Hard Disk:	HD103SJ /
CRT/LCD Model:	Viewsonic 22" VX2240W
Case:	Xigmatek Midgard II / Thermaltake VA8003SWA
PSU:	PC Power & Cooling Silencer 750W

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:	/ Visiontek 4870
Hard Disk:	HD103SJ /
CRT/LCD Model:	Viewsonic 22" VX2240W
Case:	Xigmatek Midgard II / Thermaltake VA8003SWA
PSU:	PC Power & Cooling Silencer 750W

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:	/ Visiontek 4870
Hard Disk:	HD103SJ /
CRT/LCD Model:	Viewsonic 22" VX2240W
Case:	Xigmatek Midgard II / Thermaltake VA8003SWA
PSU:	PC Power & Cooling Silencer 750W

Sep 20, 2012, 01:24 AM	#2
OnePostWonder Join Date: Dec 2008 Posts: 486 (0.30/day) Thanks: 61 Thanked 90 Times in 71 Posts System Specs	Does anyone know of a better place to post this (section of this forum or another forum)?

Nov 23, 2012, 12:48 AM	#3
OnePostWonder Join Date: Dec 2008 Posts: 486 (0.30/day) Thanks: 61 Thanked 90 Times in 71 Posts System Specs	Could a mod move this thread to Electronics? I didn't realize there was a forum with an electronics section.

Nov 24, 2012, 01:28 AM	#4
OnePostWonder Join Date: Dec 2008 Posts: 486 (0.30/day) Thanks: 61 Thanked 90 Times in 71 Posts System Specs	I could also just start a new thread. Would that be better?

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