CompuScope SDK Manua.. - Egmont Instruments

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memory counter overflow rolls over to zero. In the second diagram, Pre-Trigger data lies between ZEROand Trigger Address and Post Trigger between Trigger Address and End Address.Timing Diagrams for CompuScope CaptureAt the start of capture on the CompuScope board, the GET DATA signal is strobed low. This clears theTRIGGER and RAM FULL signals and their status bits and initializes the data acquisition counters toZERO. The BUSY signal and its status bit are now set to high. At this point, the data conversion processbegins and data are stored in the on-board memory at each sample clock. The memory is configured as acircular buffer.At some point a trigger event occurs. This starts another counter (one section of an 8254 counter chip).This is the sample depth counter. When it expires, the BUSY signal and status bit are cleared, which endsthe data acquisition process. A complete timing diagram illustrating a data acquisition in which memorydoes not get filled is shown below.Page 16CompuScope SDK Manual
CompuScope Timing Diagram: RAMFULL = 0STARTGET DATARAM FULLTRIGGERBUSYTime to AcquirePre-Trigger DataTime toAcquireDesired No.of SamplesPre-Trigger: Not All Data Points in Buffer ValidMemoryAddressZeroTrigger!Capturestops.BufferEndAddressTriggerAddress= valid pretrigger data= valid post trigger data= valid dataCompuScope SDK Manual Page 17
Page 1 and 2: Volume I:CompuScope C/C++Software D
Page 3 and 4: Gage Applied Technologies, Inc. Sof
Page 5: Global Table of ContentsVolume I Co
Page 8 and 9: Chapter 5: Sample ProgramsWindows S
Page 11 and 12: PrefaceImportant Notes:• The Comp
Page 13: Chapter 2: BasicCompuScopeOperation
Page 16 and 17: CompuScope A/D cards generally oper
Page 18 and 19: Multiple CompuScope SystemsThe Comp
Page 20 and 21: Plug-n-Play is an inherent part of
Page 22 and 23: On-Board MemoryOrganization of theC
Page 26 and 27: If during the data acquisition the
Page 28 and 29: On-board Memory: A Programmer’s V
Page 30 and 31: CompuScope RepetitiveCapture Perfor
Page 32 and 33: depth portion of the single channel
Page 34 and 35: Page 26CompuScope SDK Manual
Page 36 and 37: Sample Programs Folder Structure us
Page 38 and 39: • Gage_drv.hGage_drv.h contains g
Page 41 and 42: Writing a C Application forCompuSco
Page 43 and 44: The last routine, gage_trigger_cont
Page 45: Chapter 5:Sample Programs
Page 48 and 49: Program NameA2D_PAGED_TRANSFER.EXED
Page 50 and 51: Flow Chart describing the sample pr
Page 52 and 53: gage_trigger_control_2:gage_set_ext
Page 54 and 55: GAG2A2D_MUL_BM.EXEThe sample progra
Page 56 and 57: Gage API routines used:gage_get_dri
Page 58 and 59: DIGITAL_INPUT.EXEThe sample program
Page 61: Chapter 6:Appendices
Page 64 and 65: uInt32 sample_rate;void far *memptr
Page 66 and 67: trigger_level level at which trigge
Page 68 and 69: trigger_sensitivitytrigger_bandwidt
Page 70 and 71: Settings for boarddef structure fie
Page 72 and 73: 10 KHz SRTI_10_KHZ5 KHz SRTI_5_KHZ2
Page 74 and 75:
• couple_eThe parameter couple_e
Page 76 and 77:
Example:Below is illustrated a typi
Page 79 and 80:
Appendix C: CompilingCompuScope SDK
Page 81:
Creating a new LabWindows CVI proje
Page 84 and 85:
Arbitrary Waveform GenerationOne co
Page 86 and 87:
Technical SupportGage Applied Techn
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