USB2.1 infra-red exposure issue for short exposure times (<70usec)

[m0oz]

Required Info
Camera Model	D435
Firmware Version	05.10.03.00
Operating System & Version	Linux (Ubuntu 16)
Kernel Version (Linux Only)	4.15.0
Platform	PC
SDK Version	2.16.0
Language	C++
Segment	Robot

Issue Description

When connected to a USB2.1 port one cannot set the depth exposure time shorter than 70usec.
Exp times shorter than 70usec will lead to artifacts and over-exposed frames.

Steps to Reproduce

• Connect a D435 to a USB 2.1 port and open realsense-viewer
• Enable infra1 stream and set "enable auto exposure" to OFF
• Set exposure time to something like 100usec and you get unaffected frames
• Set exposure time to any value lower than 70usec and the frame becomes over-exposed (it looks brighter than at 100usec) and will show artifacts.

ATTENTION: When using a USB3.2 port we could not observe this issue

USB2.1, 90usec exposure	USB3.2, 90usec exposure

USB2.1, 60usec exposure	USB3.2, 60usec exposure

USB2.1, 1usec exposure, artifacts (salt and pepper)

[RealSense-Customer-Engineering]

[Realsense Customer Engineering Team Comment]
Hello @m0oz,

Thank you for pointing out this issue! We were able to replicate the issue with RealSense Viewer and will work to create a fix shortly.
Please stay tuned, will update this issue when fix is implemented.

[m0oz]

@RealSense-Customer-Engineering
Thank you for putting it on the list. I am looking forward to any news. If you figure out when the fix is released I'd be happy for a heads up ;)
We are having a hard time to capture usable data outdoors
(At least as long as this October stays this sunny here)

[mhkabir]

@RealSense-Customer-Engineering Any updates?

[RealSense-Customer-Engineering]

[Realsense Customer Engineering Team Comment]
Hello @mhkabir, and @m0oz,

We added errata in this document: https://www.intel.com/content/dam/support/us/en/documents/emerging-technologies/intel-realsense-technology/RealSense-D400-Series-Spec-Update.pdf

Please review errata document, specifically "DSO-10603" for this issue.

Attached picture is newly added errata.

Thank you!