Core Timer issues while reading in stream mode

Hi Labjack Support

I’m using a Labjack T7 and reading AIN0, AIN2-12 and the core timer. That’s the following addresses:

[61520, 4899, 0, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24]

where the first two is: CORE_TIMER and STREAM_DATA_CAPTURE_16

I sometimes get the error, that the time stamps are not correct in the sense that they don’t change. For instance, I continuously get the following two values:

1.0  and 1.0 from CORE_TIMER and STREAM_DATA_CAPTURE_16 which gives time stamp =

65537.0

The values might not be 1.0, but the values are the same in the stream continuously. If I restart the streaming of data the error might disappear as it is a periodic error occurring maybe one out of ten initializations of the stream depending on the scan rate, settling time and resolution index. The more I demanding of the Labjack, the higher frequency of the error.

I don't get errors like STREAM_SCAN_OVERLAP or similar, just the erroneous counts from the core timer.

Have you any ideas of what is going wrong here?

Labjack:

Model: T7

Serial: 470013929

Firmware Version: 1.0225

Bootloader Version: 0.94

Recovery Firmware Version: 0.6604

Configuration of stream:

Scanrate = 200

streamResolutionIndex = 5

streamSettlingUS= 10

Kind regards

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Steen