Experimental Physics and
Industrial Control System

Mark Rivers via Tech-talk <[email protected]> · Tue, 10 Dec 2019 19:30:14 +0000

I think I understand why the ChunkTimestamp is jumping between positive and negative. GenICam integers are 64 bits. ADGenICam truncates them to 32 bits.

EPICS base, asyn, and ADCore have all recently added support for 64 bit integers. I could thus change ADGenICam to use int64in and int64out records for GenICam integers. This would however require EPICS base 3.16.1 or later.

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On Dec 10, 2019, at 10:32 AM, Mark Rivers <[email protected]<mailto:[email protected]>> wrote:

Hi Tamas,

What camera are you using?

In ADSpinnaker there is a PV to tell the driver to use the embedded time stamp from the camera for the timeStamp property of the NDArray.  If you select this you may not need the ChunkTimestamp.

The timeStamp is saved in the TIFF, HDF5, and netCDF file writing plugins.

Mark

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On Dec 10, 2019, at 8:28 AM, Tamas Kerenyi via Tech-talk <[email protected]<mailto:[email protected]>> wrote:

Hi!

I’m using ADSpinnaker. How should I interpret the „ChunkTimestamp”? I’d like to know the timestamp of the pictures in nanoseconds.

labs-utg-test:cam1:GC_ChunkTimestamp_RBV 2019-12-10 16:01:34.642297 1557832136
labs-utg-test:cam1:GC_ChunkTimestamp_RBV 2019-12-10 16:01:36.640736 -737150176
labs-utg-test:cam1:GC_ChunkTimestamp_RBV 2019-12-10 16:01:38.641100 1262848184
labs-utg-test:cam1:GC_ChunkTimestamp_RBV 2019-12-10 16:01:40.643660 -1032134232

Best Regards,
Tamas Kerenyi
ICS Division, HW and Integration Group

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System