National Instruments NI 5911 user manual Contents

©NationalInstruments Corporation v NI5911 User Manual
Contents
Chapter 1
Taking Measurements with the NI 5911
Installingthe NI5911 ....................................................................................................1-1
ConnectingSignals ........................................................................................................1-1
AcquiringData withYour NI 5911 ...............................................................................1-3
ProgrammaticallyControlling YourNI 5 911..................................................1-3
Interactively Controlling Your NI 5911 with VirtualBench-Scope................ 1-3
Usingthe VirtualBench-Scope Soft Front Panel ..............................1-3
SoftFront Panel Features ..................................................................1-5
Chapter 2
Hardware Overview
DifferentialProgrammable Gain InputAmplifier (PGIA) ............................................2-1
DifferentialInput .............................................................................................2-2
Grounding Considerations ................................................................2-2
InputRanges ....................................................................................................2-3
InputImpedance ..............................................................................................2-3
InputBias ..........................................................................................2-4
InputProtection ...............................................................................................2-4
AC Coupling....................................................................................................2-4
Oscilloscope and Flexible Resolution Modes................................................................2-4
Oscilloscope Mode ..........................................................................................2-5
Sampling Methods—Real Time and RIS..........................................2-5
Flexible Resolution Mode ...............................................................................2-5
How Flexible Resolution Works.......................................................2-6
Calibration.....................................................................................................................2-6
InternallyCalibrating t he NI 5911..................................................................2-7
WhenInternal Calibration I sNeeded ..............................................................2-7
WhatInternal Calibration D oes.......................................................................2-7
WhyErrors OccurDuring Acquisition.............................................2-7
ExternalCalibration.........................................................................................2-8
Triggeringand Arming ..................................................................................................2-8
AnalogTrigger Circuit....................................................................................2-9
TriggerHold-Off .............................................................................................2-12
Memory..........................................................................................................................2-13
Triggeringand Memory Usage .......................................................................2-13
MultipleRecord Acquisitions ........................................................................................2-13