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 ......................................................................................................................................... 38
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
Channel rerouting .............................................................................................................................................................. 42
Setting up the inputs ........................................................................................................................................................... 43
Input ranges................................................................................................................................................................. 43
Input offset................................................................................................................................................................... 44
Overrange bit .............................................................................................................................................................. 45
Input termination........................................................................................................................................................... 45
Automatical adjustment of the offset settings..................................................................................................................... 45
Standard acquisition modes ............................................................................................ 47
General Information ........................................................................................................................................................... 47
Programming ..................................................................................................................................................................... 47
Memory, Pre- and Posttrigger ......................................................................................................................................... 47
Starting without interrupt (classic mode)........................................................................................................................... 48
Starting with interrupt driven mode ................................................................................................................................. 49
Data organization ........................................................................................................................................................ 50
Sample format.............................................................................................................................................................. 50
Reading out the data with SpcGetData............................................................................................................................ 51
FIFO Mode....................................................................................................................... 53
Overview .......................................................................................................................................................................... 53
General Information...................................................................................................................................................... 53
Background FIFO Read ................................................................................................................................................. 53
Speed Limitations.......................................................................................................................................................... 53
Programming ..................................................................................................................................................................... 54
Software Buffers ........................................................................................................................................................... 54
Buffer processing.......................................................................................................................................................... 55
FIFO mode .................................................................................................................................................................. 56
Example FIFO acquisition mode ..................................................................................................................................... 56
Data organization ........................................................................................................................................................ 56
Sample format.............................................................................................................................................................. 57
Clock generation ............................................................................................................. 58
Overview .......................................................................................................................................................................... 58
Internally generated sample rate .......................................................................................................................................... 58
Standard internal sample rate ........................................................................................................................................ 58
Using plain quartz without PLL........................................................................................................................................ 59
External clocking ................................................................................................................................................................ 60
Direct external clock ..................................................................................................................................................... 60
External clock with divider ............................................................................................................................................. 61
Trigger modes and appendant registers .......................................................................... 62
General Description............................................................................................................................................................ 62
Software trigger ................................................................................................................................................................. 62
External TTL trigger ............................................................................................................................................................. 62
Edge triggers ............................................................................................................................................................... 63
Pulsewidth triggers........................................................................................................................................................ 64
Channel Trigger ................................................................................................................................................................. 66
Overview of the channel trigger registers......................................................................................................................... 66
Triggerlevel.................................................................................................................................................................. 67
Detailed description of the channel trigger modes............................................................................................................. 69