Spectrum M2p.59 Series Hardware Manual page 5

Table of Contents
Programming the Board .................................................................................................. 62
Overview .......................................................................................................................................................................... 62
Register tables ................................................................................................................................................................... 62
Programming examples....................................................................................................................................................... 62
Initialization....................................................................................................................................................................... 63
Initialization of Remote Products ........................................................................................................................................... 63
Error handling.................................................................................................................................................................... 63
Gathering information from the card..................................................................................................................................... 64
Card type.................................................................................................................................................................... 65
Hardware and PCB version ........................................................................................................................................... 66
Firmware versions......................................................................................................................................................... 66
Production date ............................................................................................................................................................ 67
Last calibration date (analog cards only) ......................................................................................................................... 67
Serial number .............................................................................................................................................................. 68
Maximum possible sampling rate ................................................................................................................................... 68
Installed memory .......................................................................................................................................................... 68
Installed features and options ......................................................................................................................................... 68
Miscellaneous Card Information ..................................................................................................................................... 69
Function type of the card ............................................................................................................................................... 69
Used type of driver ....................................................................................................................................................... 70
Custom modifications .................................................................................................................................................... 70
Reset................................................................................................................................................................................. 71
Analog Inputs.................................................................................................................. 72
Channel Selection .............................................................................................................................................................. 72
Single-ended inputs....................................................................................................................................................... 72
Differential Inputs.......................................................................................................................................................... 73
Mixed single-ended and differential inputs....................................................................................................................... 74
Important note on channel selection ................................................................................................................................ 74
Setting up the inputs ........................................................................................................................................................... 75
Input ranges................................................................................................................................................................. 75
Input offset................................................................................................................................................................... 76
Input termination........................................................................................................................................................... 77
M2p.591x Digital bandwidth filter ................................................................................................................................. 77
Automatic on-board calibration of the offset and gain settings............................................................................................ 77
Read out of input features .............................................................................................................................................. 78
Acquisition modes ........................................................................................................... 79
Overview .......................................................................................................................................................................... 79
Setup of the mode ........................................................................................................................................................ 79
Commands........................................................................................................................................................................ 80
Card Status.................................................................................................................................................................. 81
Acquisition cards status overview ................................................................................................................................... 81
Generation card status overview .................................................................................................................................... 81
Data Transfer ............................................................................................................................................................... 82
Standard Single acquisition mode ........................................................................................................................................ 84
Card mode .................................................................................................................................................................. 84
Memory, Pre- and Posttrigger ......................................................................................................................................... 84
Example ...................................................................................................................................................................... 85
FIFO Single acquisition mode .............................................................................................................................................. 85
Card mode .................................................................................................................................................................. 85
Length and Pretrigger .................................................................................................................................................... 85
Difference to standard single acquisition mode................................................................................................................. 85
Example FIFO acquisition .............................................................................................................................................. 86
Limits of pre trigger, post trigger, memory size ....................................................................................................................... 86
Buffer handling .................................................................................................................................................................. 87
Data organization .............................................................................................................................................................. 91
Sample format ................................................................................................................................................................... 91
Converting ADC samples to voltage values ...................................................................................................................... 92
Clock generation ............................................................................................................. 93
Overview .......................................................................................................................................................................... 93
Clock Mode Register..................................................................................................................................................... 93
The different clock modes .............................................................................................................................................. 93
Standard internal sampling clock (PLL)................................................................................................................................... 93
Maximum and minimum internal sampling rate ................................................................................................................ 94
Oversampling .............................................................................................................................................................. 94
Direct external clock ........................................................................................................................................................... 94
External reference clock ...................................................................................................................................................... 95
(c) Spectrum Instrumentation GmbH 5