[Elphel-support] Help on possible faulty FPC cable [SEC=UNOFFICIAL]
Elphel Support
support-list at support.elphel.com
Sun Mar 6 16:36:57 PST 2022
Norman,
Yes, you will need to change configuration to reduce cable delay. I will send you instructions how to do this during preparation of the second camera (so I can reproduce and verify each step).
Each port has 8 values for the delay in 1/4 of the clock period, separate for vertical (frame) sync, horizontal (line) sync and 12-bit data. There is additional fine delay adjustment, but 1/4 of the period should be sufficient.
Andrey
---- On Sun, 06 Mar 2022 17:17:51 -0700 XIONG, Norman <nxi at ansto.gov.au> wrote ----
Hi, Andrey,
Our electrical technician has decided to use shorter FPC cables for the two sensors. And it will be one sensor per camera body. One with 100mm FPC and another with 70mm FPC. My question is when we replace the 450mm with 100mm cable, do we need to change the
port configuration?
Thanks.
Regards,
Norman
From: Elphel Support <mailto:support-list at support.elphel.com>
Sent: 28 February 2022 12:01 PM
To: XIONG, Norman <mailto:nxi at ansto.gov.au>; Elphel List <mailto:support-list at support.elphel.com>
Subject: Re: [Elphel-support] Help on possible faulty FPC cable [SEC=OFFICIAL]
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After you remove the fan from the bottom of the camera (two M2.5 screws) you need to remove 8 (4+4) screws from the front and back panel. Then remove front one and push boards with the heat plate (boards are attached to it) pushing on the heat plate (you
may make some simple tool to push on that plate). When pushing - be careful with the SSD not to hit the camera tripod mount part as it becomes loos when you remove the fan.
When you will be reassembling the camera - I put the back panel on the assembled boards first, and then slide them together into the camera body, making sure that a micro-USB connector does not hit the back panel (otherwise it can be easily peeled off
the PCB).
And yes - camera does not see port 1. It is more likely the PCB, not the cable problem - I do not see how the cable can fail gradually:
from autocampars.log
...
00037.35 autocampars: All frames:
sensor_fram16 0x2 0x0 0x0 0x0
compressor_fram16 0x0 0x0 0x0 0x0
i2c_frame16 0x2 0x0 0x0 0x0
sensor_aframe 0x00000002 0x00000000 0x00000000 0x00000000
compressor_aframe 0x00000000 0x00000000 0x00000000 0x00000000
compressor_gframe 0x00000000 0x00000000 0x00000000 0x00000000
00037.36 autocampars: Frames: 0, 0, 0, 0
00037.37 autocampars: #### Wrong/missing sensor on port 1, code=0 (expected 52) . Driver reports errors until port is disabled at later stage ####
00037.38 autocampars: #### Wrong/missing sensor on port 2, code=0 (expected 52) . Driver reports errors until port is disabled at later stage ####
00037.39 autocampars: #### Wrong/missing sensor on port 3, code=0 (expected 52) . Driver reports errors until port is disabled at later stage ####
00037.40 autocampars: port=0 GLOBALS[sensors][port][0]=mt9p006
00037.41 autocampars: port=1 GLOBALS[sensors][port][0]=none
00037.42 autocampars: port=2 GLOBALS[sensors][port][0]=none
00037.43 autocampars: port=3 GLOBALS[sensors][port][0]=none
...
Andrey
---- On Sun, 27 Feb 2022 17:50:35 -0700 Elphel Support <mailto:support-list at support.elphel.com> wrote ----
Norman,
If it is not too late - you need to take off fan first, then slide out the boards of the camera. Fan has a long connector reaching to the board through the hole.
Andrey
---- On Sun, 27 Feb 2022 16:59:41 -0700 XIONG, Norman <mailto:nxi at ansto.gov.au> wrote ----
Hi, Andrey,
Thanks for the quick response.
Here are the two log files, with both ports connected with sensors. I'll try to open up the box to reconnect the cable shortly.
Regards,
Norman
From: Elphel Support <mailto:support-list at support.elphel.com>
Sent: 28 February 2022 10:19 AM
To: XIONG, Norman <mailto:nxi at ansto.gov.au>
Subject: Re: [Elphel-support] Help on possible faulty FPC cable [SEC=OFFICIAL]
CAUTION, EXTERNAL EMAIL: This message has come from a source outside of ANSTO. Do
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Hello Norman,
Can you get log files from the camera?
>From Linux system
ssh-copy-id root at 192.168.0.9 # Or whatever IP is assigned to the camera
default password is pass
Then you can use scp to copy files to your local directory:
scp root at 192.168.0.9:/var/log/messages
scp root at 192.168.0.9:/var/log/autocampars.log
Abd then send these files.
Yes, we will prepare the new camera, but in any case I would like to try to troubleshoot the camera you have, if that will not work we will send you a replacement one. You may try to open the camera and get access to the camera side of the cable. Camera
has 4 cable ports so you may try to either just reconnect the cable or try other port.
The gold-plated pins on the cable end should be towards the connector lock. When you try different port, the image can be corrupted (delays fro the long cable were set only for ports 0 and 1.
Andrey
---- On Sun, 27 Feb 2022 15:57:50 -0700 XIONG, Norman <mailto:nxi at ansto.gov.au> wrote ----
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
Tel
Email
Web
+61 2 9717 7008
https://exchnlb-b51.ansto.gov.au/owa/redir.aspx?C=d49cfec1ed6d483489b2b97e6981cdd1&URL=mailto%3aNORMAN.XIONG%40ansto.gov.au
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From: Elphel Support <mailto:support-list at support.elphel.com>
Sent: 27 February 2022 6:14 AM
To: XIONG, Norman <mailto:nxi at ansto.gov.au>; Elphel List <mailto: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 <mailto: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
Tel
Email
Web
+61
2 9717 7008
mailto:nxi at ansto.gov.au
http://www.ansto.gov.au/
http://www.facebook.com/DiscoverANSTO https://twitter.com/ANSTO http://www.linkedin.com/company/ansto http://www.youtube.com/user/ANSTOVideos
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