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QuantAsylum Manuals
Measuring Instruments
QA403
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QuantAsylum QA403 User Manual
Audio analyzer
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Contents
Table of Contents
Bookmarks
Table of Contents
Safety Notice
Limited Warranty
Legal
Table of Contents
Online Documentation
In the Box
Important Things to Know
Model Number
Ground Reference
BNC Input Voltages
BNC Output Voltages
Qa40X Output Voltage Offsets, Click and Pops
Qa40X Analyzer Features
Analyzer Front Panel
Leds
Expansion Connector
BNC Inputs and Outputs
Understanding Differential Measurements
Rear Panel Summary
Electrical Characteristics of the Connectors
BNC Inputs
BNC Outputs
Software Installation
Windows Version
USB Drivers
Calibration
Plugging in Your Hardware
Button and Control Panel Operation
Qa40X Basic Controls
Measurement Display Area
Trace Display Area
Markers
System Annunciators
Control Groups
Display Options
Axis Settings
Acq (Acquisition) Settings
Weighting
Windowing
Measurements
Generators
Sine Generation
Multitone
White Noise
Expo Chirp
Full Scale Input
Run/Stop
Run/Stop Context Menu
Cursors
Other Items
Soft Keys
Command Line Options
Automated Tests
Visualizers
Remote Control and Apis
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Measurements
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Automated Tests
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QA40x User Manual
Revision 1.20
February 2022
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Summarization of Contents
Safety Notice
Limited Warranty
Legal
Online Documentation
In the Box
Important Things to Know
Model Number
Clarifies terminology regarding QA40x hardware and software.
Ground Reference
Explains the two ground references and their implications for measurements.
BNC Input Voltages
Specifies voltage limits for BNC inputs and warns of damage.
BNC Output Voltages
Describes output characteristics and potential damage from shorting.
QA40x Output Voltage Offsets, Click and Pops
QA40x Analyzer Features
Analyzer Front Panel
LEDs
Describes the function of the Link and Run LEDs.
Atten LED
Expansion Connector
BNC Inputs and Outputs
Understanding Differential Measurements
Rear Panel Summary
Electrical Characteristics of the Connectors
BNC Inputs
Details the input network's components, impedance, and DC blocking capacitor.
BNC Outputs
Software Installation
Windows Version
USB Drivers
Calibration
Plugging in your Hardware
Button and Control Panel Operation
QA40x Basic Controls
Control Region Interaction
Explains scrolling and navigation within the control panel.
Measurement Display Area
Add Measurement Dialog
Filtering Measurements
Explains how to use the filter to narrow down measurement options.
Trace Display Area
Markers
System Annunciator Descriptions
Data Path and Signal Quality
Explains annunciators related to ADC/DAC, input/output signals, and clipping.
Measurement and Acquisition Status
Covers annunciators for FFT size, FR settings, muting, and weighting.
Operational Modes and Settings
Describes annunciators indicating specific operating modes or settings like attenuator, pause, or mirroring.
Control Groups
Axis Settings Interaction
Details how to use up/down controls and context menus for axis settings.
Display Options
Explains how to toggle between time/frequency domains and input/output traces.
Axis Settings
dBV Options
Covers Y-axis units, external gain, and peak display format in dBV.
dBr Options
X LIN / X LOG Axis Settings
Acq (Acquisition) Settings
FFT Size and Averaging
Discusses the impact of FFT size and how to use averaging.
Weighting
User Weighting File
Describes the format and usage of custom weighting files.
Windowing
Measurements
RMS Measurement Options
Details how to configure the frequency range for RMS calculations.
THD and THD+N Measurements
Fundamental Selection
Describes how to determine the primary frequency for THD+N analysis.
Generators
Generator Modes
Lists the four available generator modes: Sine, Multitone, White Noise, Expo Chirp.
Analyzer Output Block Diagram
Sine Generation
Dual Tone Sine
Explains the use of dual sine tones for IMD measurements.
Multitone
Multitone Settings
Details parameters like tones per octave and total RMS level.
White Noise
Expo Chirp
Expo Chirp Windowing
Discusses windowing options for Expo Chirp to handle reflections.
Frequency Response Settings
Mask Settings
Explains how to load and use mask files for pass/fail testing.
Full Scale Input
Full Scale Input Controls
Details the input range selection and the active attenuator status.
Run/Stop
Sample Rate Selection
Discusses choosing sample rates and their impact on performance.
Idle Mode Behavior
Explains the idle mode function and output muting.
Front Panel I2S
Details testing I2S devices via the front panel connector.
Front Panel I2S Settings
Run/Stop Context Menu
Triggered Acquisition
Audition
Cursors
Cursor Controls
Details the functions of Center, Left, Right, and Peak buttons for cursor manipulation.
Soft Keys
Acquisition Control Soft Keys
Covers soft keys for starting/stopping acquisitions and single runs.
FFT Size Soft Keys
Details soft keys for adjusting FFT size.
Marker and Idle Soft Keys
Covers soft keys for marker deletion and enabling idle tone generation.
Navigation Soft Keys
Explains soft keys for scrolling the control panel.
Command Line Options
Automated Tests
Visualizers
Remote Control and APIs
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