National Instruments NI PCI-5911 user manual Contents

© National Instruments Corporation v NI PCI-5911 User Manual
Contents
About This Manual
Conventions...................................................................................................................vii
Related Documentation..................................................................................................viii
Safety Information.........................................................................................................viii
Chapter 1
Introduction
Installing the NI 5911....................................................................................................1-1
Connecting Signals........................................................................................................1-1
Acquiring Data with the NI 5911 ..................................................................................1-3
Programmatically Controlling the NI 5911.....................................................1-3
Interactively Controlling the NI 5911 with the Scope Soft Front Panel......... 1-4
Chapter 2
Hardware Overview
Differential Programmable Gain Input Amplifier (PGIA)............................................2-1
Differential Input.............................................................................................2-1
Grounding Considerations................................................................ 2-2
Input Ranges....................................................................................................2-3
Input Impedance..............................................................................................2-3
Input Bias..........................................................................................2-4
Input Protection...............................................................................................2-4
AC Coupling....................................................................................................2-4
Conventional and Flexible Resolution Modes...............................................................2-5
Conventional Mode.........................................................................................2-5
Sampling Methods...........................................................................................2-5
Flexible Resolution Mode...............................................................................2-6
How Flexible Resolution Works.......................................................2-6
Calibration.....................................................................................................................2-7
Self-Calibrating the NI 5911...........................................................................2-7
When Self-Calibration Is Needed....................................................................2-7
What Self-Calibration Does............................................................................2-7
Why Warnings Occur During Acquisition........................................2-8
External Calibration.........................................................................................2-8
Triggering and Arming..................................................................................................2-8
Analog Trigger Circuit....................................................................................2-9
Trigger Holdoff...............................................................................................2-10