LVDS (Low Voltage Differential Signal)

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LVDS (Low Voltage Differential Signal)

Postby LM358 » Sat Sep 05, 2015 2:11 pm


I am a Technical Trainer for Renault in Belgium.
On New Espace 5 & Kadjar, Renault uses LVDS for data transport between the RadioNav-unit and the RLink-screen.
I am trying to visualise the signal, which should look like CAN, but with lower voltage levels (between 1.2 and 1.35 (high) and between 1.2 and 1.05 (low)). Speed is also higher than CAN-speed.
With my Pico 4423, I am unable to detect the signal. All I see is a very noisy signal without any content.
Do I need better probes, or is the transmission speed to high for the 4423 ?

Does anyone have any experience with LVDS ?
Thanks in advance for helping me.

BR - Eric.
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Re: LVDS (Low Voltage Differential Signal)

Postby Robski » Sat Sep 05, 2015 5:13 pm

Have you tried a filter & vertical zoom ?
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Re: LVDS (Low Voltage Differential Signal)

Postby Fat Freddy » Sun Sep 06, 2015 1:53 am

Here's a Pico set up for LVDS. And this is an 8 bit scope. ... resolution

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Re: LVDS (Low Voltage Differential Signal)

Postby PicoPhil » Fri Sep 11, 2015 12:07 pm

Hi Fat Freddy
I have not had any involvement with the Radionav to R link system on a Renault before. On some systems like Flexray we have to use a 60MHZ probe. Would you like me to provide me with an address/ contactdetails and i will send you a probe to try.Hope this helps.
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