Nghia Ho
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Activity overview
Latest activity by Nghia Ho-
Nghia Ho commented,
Thanks! This appears to solve the problem.
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Nghia Ho created a post,
~1 second delay when using Lossless image compression and Device Link Throughput Limit
AnsweredI am observing the following in Spinview with a Blackfly Gige 5MP color camera. Lossless compression ON, Device Link Throughput Limit = 125,000,000. Low delay. Lossless compression ON, Device Link...
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Nghia Ho commented,
Thanks for the info. I think I got everything I need to move forward!
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Nghia Ho commented,
I haven't looked into outputting the Master PTP clock from my computer yet. Is the Blackfly camera timestamp from the start or end of acquisition? Nghia
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Nghia Ho commented,
I just had a closer look at https://en.wikipedia.org/wiki/Leap_second The 37 seconds is derived from 10 + 27. The 27 is the introduced leap seconds currently and the 10 is a starting offset. Lookin...
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Nghia Ho commented,
Hi, I did notice the Blackfly's timestamp was 37 seconds into the future. It would be nice if someone can confirm how exactly it's doing the calculation inside the hardware. Nghia
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Nghia Ho commented,
Hi, The time drift happens instantly when the devices are turned on and PTP is active. It's not something I have to wait. I ran another test. I connected a Time Machine 2500C device (https://timema...
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Nghia Ho commented,
Hi, I turned off PTP master on the Novatel side. I can only confirm clock drift if they are apart far enough. I'm simply comparing messages as they arrive on the host and seeing how similar the tim...
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Nghia Ho commented,
Hi, 1. Here's a screenshot with PTP off. With PTP on. In both sceenshots I clicked the Dataset Latch Execute button. What does this button actually do? I noticed the field "IEEE 1588 Status" d...
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Nghia Ho commented,
Hi, 1. The Novatel INS and Blackfly camera are both connected to a Netgear GS308EP PoE switch, which then connects to my laptop. 2. I've confirmed Novatel does support PTP (latest firmware). https:...