National Instruments NI 5911 user manual Contents

©NationalInstruments Corporation vii 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 the Scope Soft Front Panel......1-3
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.....................................................................................................................2-7
InternallyCalibrating t he NI 5911..................................................................2-7
WhenInternal Calibration I sNeeded ..............................................................2-7
WhatInternal Calibration D oes.......................................................................2-7
WhyErrors OccurDuring Acquisition.............................................2-8
ExternalCalibration.........................................................................................2-8
Triggeringand Arming ..................................................................................................2-8
AnalogTrigger Circuit....................................................................................2-9
TriggerHold-Off .............................................................................................2-10
Memory..........................................................................................................................2-10
Triggeringand Memory Usage .......................................................................2-10
Multiple-RecordAcquisitions ........................................................................................2-11