Max bnc cable length

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Max bnc cable length

Postby MD tech » Sun Oct 30, 2016 2:30 pm

Hey everyone, I am a new scope user, I am trying to make it easier to perform tests, possibly while road testing a vehicle. I was wondering if it is possible to add extra lengths of bnc cable (up to 20 feet) without loosing signal quality.
thanks
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Re: Max bnc cable length

Postby AuthorMike » Mon Oct 31, 2016 11:23 am

MD tech wrote:Hey everyone, I am a new scope user, I am trying to make it easier to perform tests, possibly while road testing a vehicle. I was wondering if it is possible to add extra lengths of bnc cable (up to 20 feet) without loosing signal quality.
thanks


Hi,

I've just run this past one of our Tech guys here and they say you should be OK to do this but bear in mind using longer leads could well reduce the bandwidth of the scope, which would reduce the ability to measure fast signals such as FlexRay and CAN bus,


Regards,

Mike
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Re: Max bnc cable length

Postby STC » Mon Oct 31, 2016 3:55 pm

Just a guess from me.

Could this be overcome by using the normal BNC leads but use a longer USB lead ?
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Re: Max bnc cable length

Postby MD tech » Tue Nov 01, 2016 12:39 am

Thanks for the feedback, I am trying to put together a way to hace a roll cart with the laptop and scope, then run test leads to a vehicle, or have the scope inside while driving, so I have considered the longer usb cable, but it would not be ideal.
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Re: Max bnc cable length

Postby MD tech » Tue Nov 01, 2016 1:49 am

STC wrote:Just a guess from me.

Could this be overcome by using the normal BNC leads but use a longer USB lead ?


Thank you for the input, I have thought about a longer usb cable, however I am hoping to set up a small roll cart with a laptop and scope, and run test leads from there. I also would like to be able to keep the scope in the vehicle while road testing.
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Re: Max bnc cable length

Postby STC » Tue Nov 01, 2016 8:26 pm

MD

Perhaps I have missed the point. I find the 5 metre leads more than long enough to run from the Engine Compartment on most vehicles including Rear Engined models. Porsche Ferrari .....

Out of interest, what vehicles are you working on that would require 20 feet leads ?
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