Changes between Version 5 and Version 6 of Sensors/Specim


Ignore:
Timestamp:
Dec 14, 2009 6:48:36 PM (9 years ago)
Author:
mggr
Comment:

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  • Sensors/Specim

    v5 v6  
    1919== Data transfer ==
    2020
    21 The data from the CCD is transferred to a framegrabber card in the computer using [http://en.wikipedia.org/wiki/Camera_Link Camera Link].  As this is a digital protocol, there are no digitisation effects to worry about.
     21The data from the CCD are transferred to a framegrabber card in the computer using [http://en.wikipedia.org/wiki/Camera_Link Camera Link].  As this is a digital protocol, there are no digitisation effects to worry about.
    2222
    2323== Timing ==
    2424
    25 Both Specim instruments are connected to a nav-sync box that timestamps the start of acquisition against GPS time.  This measures the time from the start of acquisition pulse to the next GPS pulse-per-second.
     25Both Specim instruments are connected to a nav-sync box that timestamps the start of acquisition against GPS time.  This measures the time to the next GPS pulse-per-second, from the first start of integration pulse from the camera that occurs after the start of acquisition pulse from the recording system.
    2626
    2727The frame grabber lag time is apparently 55ms regardless of frame rate (i.e. a frame is captured 55ms before the nav sync pulse).