4
Programming the Board................................................................................................. . 36
Overview.......................................................................................................................................................................... 36
Register tables...................................................... ............................................................................................................. 36
Programming examples....................................................................................................................................................... 36
Error handling.................................................................................................................................................................... 36
Initialization....................................................................................................................................................................... 37
Starting the automatic initialization routine ...................................................................................................................... 37
PCI Register................................................................................................................................................................. 37
Hardware version......................................................................................................................................................... 38
Date of production........................................................................................................................................................ 38
Serial number............................................................................................. ................................................................. 38
Maximum possible sample rate...................................................................................................................................... 38
Installed memory..................................................................................................................................... ..................... 38
Installed features and options......................................................................................................................................... 39
Used interrupt line....................................................................................... ................................................................. 39
Used type of driver....................................................................................................................................................... 39
Powerdown and reset......................................................................................................................................................... 40
Analog Inputs.................................................................................................................. 41
Channel Selection.............................................................................................................. ................................................ 41
Important note on channels selection............................................................................................................................... 41
Setting up the inputs........................................................................................................................................................... 42
Input ranges................................................................................................................................................................. 42
Input offset................................................................................................................................................................... 43
Input termination........................................................................................................................................................... 44
Automatical adjustment of the offset settings..................................................................................................................... 44
Standard acquisition modes ............................................................................................ 45
General Information.............................................. ............................................................................................................. 45
Programming..................................................................................................................................................................... 45
Memory, Pre- and Posttrigger......................................................................................................................................... 45
Starting without interrupt (classic mode)........................................................................................................................... 46
Starting with interrupt driven mode................................................................................................................................. 46
Data organization........................................................................................................................................................ 47
Sample format.............................................................................................................................................................. 47
Reading out the data with SpcGetData............................................................................................................................ 47
FIFO Mode....................................................................................................................... 49
Overview.......................................................................................................................................................................... 49
General Information...................................................................................................................................................... 49
Background FIFO Read................................................................................................................................................. 49
Speed Limitations.......................................................................................................................................................... 49
Programming..................................................................................................................................................................... 50
Software Buffers........................................................................................................................................................... 50
Buffer processing.......................................................................................................................................................... 51
FIFO mode........................................................................... ....................................................................................... 52
Example FIFO acquisition mode..................................................................................................................................... 52
Data organization........................................................................................................................................................ 52
Sample format.............................................................................................................................................................. 53
Clock generation ............................................................................................................. 54
Overview.......................................................................................................................................................................... 54
Internally generated sample rate............................................................................................... ........................................... 54
Standard internal sample rate........................................................................................................................................ 54
Using plain quartz with no PLL........................................................................................................................................ 55
Direct external clock........................................ ............................................................................................................. 55
External clock with divider............................................................................................................................................. 57
Trigger modes and appendant registers .......................................................................... 58
General Description............................................................................................................................................................ 58
Software trigger................................................................................................................................................................. 58
External TTL trigger............................................................................................................................................................. 58
Edge triggers............................................................................................................................................................... 59
Pulsewidth triggers........................................................................................................................................................ 60
Channel Trigger................................................................................................................................................................. 62
Overview of the channel trigger registers......................................................................................................................... 62
Triggerlevel.................................................................................................................................................................. 63
Detailed description of the channel trigger modes............................................................................................................. 65