ADLINK PXI-9527 User Manual
PXI-9527
24-Bit High Resolution Dynamic
Signal Acquisition and Generation Module
User’s Manual
Manual Rev.: 2.00
Revision Date: Nov, 17, 2011
Part No: 50-17036-1000
Advance Technologies; Automate the World.
Revision History
Revision Release Date Description of Change(s)
2.00 2011/11/17 Initial Release
ii
PXI-9527
Preface
Copyright 2011 ADLINK Technology, Inc.
This document contains proprietary information protected by copyright. All rights are reserved. No part of this manual may be reproduced by any mechanical, electronic, or other means in any form
without prior written permission of the manufacturer.
Disclaimer
The information in this document is subject to change without prior
notice in order to improve reliability, design, and function and does
not represent a commitment on the part of the manufacturer.
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use or inability to use the product or documentation, even if
advised of the possibility of such damages.
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Preface iii
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PCI™, is a registered trademark of the Peripheral Component
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Product names mentioned herein are used for identification purposes only and may be trademarks and/or registered trademarks
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Conventions
Take note of the following conventions used throughout this
manual to make sure that users perform certain tasks and
instructions properly.
Additional information, aids, and tips that help users perform tasks.
NOTE:
NOTE:
Information to prevent minor physical injury, component
damage, data loss, and/or program corruption when try-
CAUTION:
ing to complete a task.
®
Information to prevent serious physical injury, component damage, data loss, and/or program corruption
when trying to complete a specific task.
iv Preface
PXI-9527
Table of Contents
Preface .................................................................................... iii
List of Figures ....................................................................... vii
List of Tables.......................................................................... ix
1 Introduction ........................................................................ 1
1.1 Features............................................................................... 2
1.2 Applications ......................................................................... 2
1.3 Specifications....................................................................... 3
1.3.1 Analog Input ............................................................... 3
1.3.2 Analog Output............................................................. 7
1.3.3 Triggers, Timebase..................................................... 9
1.3.4 General Specifications.............................................. 10
1.4 Software Support ............................................................... 11
1.4.1 SDK .......................................................................... 11
1.4.2 DSA-DASK ............................................................... 11
1.4.3 Application Software................................................. 12
2 Getting Started ................................................................. 15
2.1 Installation Environment .................................................... 15
2.2 Package Contents ............................................................. 16
2.3 Device Layout and IO Array............................................... 17
2.4 Installing the module.......................................................... 18
2.5 Signal Connection.............................................................. 19
2.5.1 BNC Connector Polarity ........................................... 19
2.5.2 Analog Input Connection .......................................... 19
2.5.3 Analog Output Connection ....................................... 20
3 Operations ........................................................................ 21
3.1 Functional Block Diagram.................................................. 21
Table of Contents v
3.2 Analog Input Channel ........................................................ 22
3.2.1 Analog Input Front-End Configuration ......................22
3.2.2 Input Range and Data Format ..................................23
3.2.3 ADC and Analog Input Filter..................................... 25
3.2.4 FIFO and DMA Transfer For Analog Input................ 25
3.3 Analog Output Channel...................................................... 27
3.3.1 Analog Output Front-End Configuration ...................28
3.3.2 Output Range and Data Format ...............................28
3.3.3 DAC and Analog Output Filter ..................................29
3.3.4 FIFO and DMA Transfer For Analog Output............. 29
3.4 Trigger Source and Trigger Mode...................................... 30
3.4.1 Trigger Sources ........................................................30
3.4.2 Trigger Mode ............................................................33
3.5 ADC and DAC Timing Control ........................................... 34
3.5.1 Timebase Architecture.............................................. 34
3.5.2 DDS Timing VS ADC/DAC Relationship................... 35
3.5.3 Timing Constraints.................................................... 35
3.5.4 Filter Delay in ADC and DAC.................................... 35
4 Calibration ........................................................................ 37
4.1 Calibration Constant .......................................................... 37
4.2 Auto-Calibration ................................................................. 38
4.3 Offset Error Compensation During
AI Sampling Rate Change ....................................... 38
Important Safety Instructions.............................................. 41
Getting Service ..................................................................... 43
vi Table of Contents
PXI-9527
List of Figures
Figure 1-1: Analog Input Channel Bandwidth, ±10 V Input Range5
Figure 1-2: Magnitude Response of AC Couple of Input Channel 6
Figure 1-3: DSA Device Setting Interface ................................... 12
Figure 1-4: DSA Input Interface .................................................. 13
Figure 1-5: DSA Output Interface ............................................... 14
Figure 2-1: PXI-9527 Side View.................................................. 17
Figure 2-2: PXI-9527 I/O array.................................................... 18
Figure 3-1: Analog Input Architecture of the PXI-9527 ............... 22
Figure 3-2: Linked List of PCI Address DMA Descriptors ........... 27
Figure 3-3: Analog Output Architecture of the PXI-9527 ............ 27
Figure 3-4: Trigger Architecture of the PXI-9527 ........................ 30
Figure 3-5: External Digital Trigger ............................................. 31
Figure 3-6: Analog Trigger Conditions ........................................ 32
Figure 3-7: Post-trigger Acquisition / Waveform Generation ...... 34
Figure 3-8: Delay Trigger Mode
Acquisition / Waveform Generation .......................... 34
Figure 3-9: PXI-9527 Timebase Architecture.............................. 34
List of Figures vii
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viii List of Figures
PXI-9527
List of Tables
Table 1-1: Channel Characteristics................................................... 3
Table 1-2: Crosstalk.......................................................................... 4
Table 1-3: Transfer Characteristics................................................... 4
Table 1-4: Analog Input Channel Bandwidth ....................................4
Table 1-5: AC Coupling..................................................................... 5
Table 1-6: Integrated Electronic Piezoelectric (IEPE)....................... 6
Table 1-7: Channel Characteristics................................................... 7
Table 1-8: AO DC Accuracy.............................................................. 7
Table 1-9: Output Impedance ...........................................................8
Table 1-10: AO Dynamic Characteristics ............................................ 8
Table 1-11: Triggers............................................................................ 9
Table 1-12: Analog Trigger .................................................................9
Table 1-13: Digital Trigger .................................................................. 9
Table 1-14: Timebase ......................................................................... 9
Table 2-1: Analog Input Connection ...............................................19
Table 2-2: Analog Output Connection............................................. 20
Table 3-1: Input Configurations....................................................... 22
Table 3-2: Input Range and Data Format .......................................24
Table 3-3: Input Range Midscale Values........................................ 24
Table 3-4: ADC Sample Rates VS DSS Output Clock.................... 25
Table 3-5: Output Configuration...................................................... 28
Table 3-6: Digital Input Code and Analog Output Range................ 28
Table 3-7: DAC (Digital-to-Analog Converter) ................................29
Table 3-8: Timing Relationship of the ADC, DAC and DDS Clock .35
Table 3-9: ADC Filter Delay ............................................................ 36
Table 3-10: DAC Filter Delay ............................................................ 36
Table 4-1: Offset Compensation Time Required
for Various Sampling Rates ........................................... 39
List of Tables ix
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x List of Tables
1 Introduction
The PXI-9527 is a high-performance 2-CH analog input and output
dynamic signal acquisition module, specifically suited for use in
audio testing, acoustic measurement, and vibration analysis applications.
The PXI-9527 features two 24-bit simultaneous sampling analog
input channels. A 24-bit sigma-delta ADC provides a sampling rate
up to 432 kS/s at high resolutions, suitable for higher bandwidth
dynamic signal measurements. The sampling rate can be adjusted
by setting the onboard DDS clock source to an appropriate frequency. All channels are sampled simultaneously and accept an
input range from ±40 V to ±0.316 V. The PXI-9527 analog input
supports software selectable AC or DC coupling and 4 mA bias
current for integrated electronic piezoelectric (IEPE) sensors.
The PXI-9527 also provides two channels of 24-bit resolution, high
fidelity analog output. The outputs occur simultaneously at software programmable rates up to 216 kS/s. A software programmable output range of 0.1 V, 1 V, and 10 V is available on the output
channels.
PXI-9527
Introduction 1
1.1 Features
X PXI specification Rev. 2.2 compliant
X 24-Bit Sigma-Delta ADC and DAC
X 2-CH simultaneous sampling analog inputs
X 2-CH simultaneous updated analog outputs
X 432 kS/s maximum ADC sampling rate with software pro-
grammable rate
X 216 kS/s maximum DAC update rate with software pro-
grammable rate
X Programmable input range: ±40 V, ±10 V, ±3.16 V, ±1 V,
±0.316 V
X Programmable output range: ±0.1 V, ±1 V, ±10 V
X AC or DC input coupling, software selectable
X Trigger I/O connector for external digital trigger signal
X Support for IEPE output on each analog input, software-
configurable
1.2 Applications
X Audio signal testing
X Acoustic measurement
X Environmental noise testing
X Vibration testing
X Machine condition monitoring
2 Introduction
PXI-9527
1.3 Specifications
1.3.1 Analog Input
Channel Characteristics
Channels 2
Input configurations Differential or pseudo-differential
Input coupling AC or DC, software selectable
ADC resolution 24 bit
ADC type Delta-sigma
Sample rates (fs) 432 kS/s maximum, 2 kS/s to 432 kS/s in 454.7
uS/s increments, maximum
FIFO buffer size Total 4096 samples shared for AI channels
Data transfers Direct memory access (DMA)
Input signal range ±40 V
±10 V
±3.16 V
±1 V
±0.316 V
Input Common Mode
Range
Overvoltage protection Differential input: ±40 Vpk
Input impedance Differential configuration
Table 1-1: Channel Characteristics
±10 V for both differential and pseudo-differential
configuration
Pseudo-differential
X Positive terminal: ±40 Vpk
X Negative terminal: ±10 Vpk
X Between (+) and GND: 1 MΩ
X Between (-) and GND: 1 MΩ
Pseudo-differential configuration
X Between (+) and GND: 1 MΩ
X Between (-) and GND: 50 Ω
Introduction 3
Crosstalk
Crosstalk
Adjacent channel < -100 dB
Measured with +/-10V input
Input signal is 18 Vpp @ 1kHz sine wave
Table 1-2: Crosstalk
Transfer Characteristics
Input range Offset (±mV) @ Tcal ± 5°C
AI offset
error
AI gain error ±10 V, ±3.16 V, ±1 V, ±0.316 V ±0.2%
Table 1-3: Transfer Characteristics
±40 V 0.5
±10 V 0.2
±3.16 V 0.1
±1 V 0.05
±0.316 V 0.05
±40 V ±0.5%
Analog Input Channel Bandwidth
Input range Bandwidth (-3dB)
±40 V, ±10 V, ±3.16 V, ±1 V, and
±0.316 V
Table 1-4: Analog Input Channel Bandwidth
4 Introduction
130 kHz
Figure 1-1: Analog Input Channel Bandwidth, ±10 V Input Range
AC Coupling
-3 dB cutoff frequency 3.5 Hz
-0.1 dB cutoff frequency 26 Hz
Table 1-5: AC Coupling
PXI-9527
Introduction 5
Figure 1-2: Magnitude Response of AC Couple of Input Channel
Integrated Electronic Piezoelectric (IEPE)
Current 4 mA, each channel independently software
selectable
Compliance 24 V
Table 1-6: Integrated Electronic Piezoelectric (IEPE)
6 Introduction
PXI-9527
1.3.2 Analog Output
Channel Characteristics
Channels 2
Output configurations Differential or pseudo-differential (50 Ω to chas-
sis ground), balance output, each channel independently software selectable
Output coupling DC
DAC resolution 24 bit
DAC type Delta-sigma
Update rates (fs) 1 kS/s to 216 kS/s in 227.3 uS/s increments,
maximum
Minimum working load 600 Ω
Short circuit protection Indefinite protection between positive and nega-
tive
Onboard FIFO buffer size 2048 samples for each AO channel
Data transfers Direct memory access (DMA)
Output signal range ±10 V
±1 V
±0.1 V
Table 1-7: Channel Characteristics
AO DC Accuracy
Output Range
±10 V 1
AO Offset ±mV
AO Gain Error
±%
Introduction 7
±1 V 0.25
±0.1 V 0.05
±10 V 0.4
±1 V 0.4
±0.1 V 0.4
Table 1-8: AO DC Accuracy
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