[Elphel-support] Help on possible faulty FPC cable [SEC=OFFICIAL]

Sun Feb 27 14:57:50 PST 2022

Hi, Andrey,

I am not able to get port 1 back. When I connected both ports, I got only one sensor image on port 0. And if I connect only port 1, the system can't find any sensor.

Anyway, we decided to buy another 393 system to support the second sensor. This is mainly because we need to put the two sensors far away from each other, where the FPC cables are not long enough to connect both sensors to the same system.

Enclosed is our previous order invoice. We want to duplicate the NC393 system, but no sensor or lens is rquired. We need one 450mm FPC cable pre-cofigured for the system, and a PoE power supply. Can you please ask your sales team to provide me with a new quote? Thank you.

Regards,
Dr Norman Xiong
Scientific Software Engineer
Australian Centre for Neutron Scattering
Australian Nuclear Science and Technology Organisation
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From: Elphel Support <support-list at support.elphel.com>
Sent: 27 February 2022 6:14 AM
To: XIONG, Norman <nxi at ansto.gov.au>; Elphel List <support-list at support.elphel.com>
Subject: Re: [Elphel-support] Help on possible faulty FPC cable [SEC=OFFICIAL]

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Hello Norman,

I'm sorry you are having these problems. 450mm cables are close to the maximal usable length. Most likely the problem is related to the need to change delay in the sensor interface signals relative to clock, not the hardware problem with the cable. But it still can be the problem, of course.

What happens now - you can get a picture from port 0, and nothing at all on port 1? Black image, corrupted image, getting stuck trying to get an image? What happened before (when it was restoring after reboot)?

If you are getting corrupted image - can you please send it ?

Andrey

---- On Wed, 23 Feb 2022 02:46:52 -0700 XIONG, Norman <nxi at ansto.gov.au> wrote ----

Dear Elphel support team,

We have a NC393 system, with two sensors connected by 450mm FPC cables. Ever since

we put the system together in last July, port 1 was unstable and lost connection every a few

weeks. Rebooting the system would get the port back. However, recently that port was

totally lost. We can’t have it back by rebooting or reconnecting the camera to the cable.

We did a simple debugging by swapping sensors between the two FPC cables.  Both sensors

worked with port 0, and neither of them worked with port 1. So we presume the FPC cable

on port 1 is faulty. We didn’t open up the box to check the connection between the cable and

the board. I am looking for advice on what I should do next. Shall I open up the box to check

the internal connection or shall I simply order another FPC cable from you? And Is the cable

fragile?

Thanks.

Regards,

Norman Xiong

Software Engineer (Scientific)
NSTLI Neutron Scattering

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