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 ii Revision Release Date 2.
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.
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PXI-9527 Table of Contents Preface .................................................................................... iii List of Figures ....................................................................... vii List of Tables.......................................................................... ix 1 Introduction ........................................................................ 1 1.1 1.2 1.3 Features...............................................................................
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 ...................
PXI-9527 List of Figures Figure 1-1: Figure 1-2: Figure 1-3: Figure 1-4: Figure 1-5: Figure 2-1: Figure 2-2: Figure 3-1: Figure 3-2: Figure 3-3: Figure 3-4: Figure 3-5: Figure 3-6: Figure 3-7: Figure 3-8: Figure 3-9: List of Figures Analog Input Channel Bandwidth, ±10 V Input Range5 Magnitude Response of AC Couple of Input Channel 6 DSA Device Setting Interface ................................... 12 DSA Input Interface .................................................. 13 DSA Output Interface ...........
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PXI-9527 List of Tables Table Table Table Table Table Table Table Table Table Table Table Table Table Table Table Table Table Table Table Table Table Table Table Table Table Table Table 1-1: 1-2: 1-3: 1-4: 1-5: 1-6: 1-7: 1-8: 1-9: 1-10: 1-11: 1-12: 1-13: 1-14: 2-1: 2-2: 3-1: 3-2: 3-3: 3-4: 3-5: 3-6: 3-7: 3-8: 3-9: 3-10: 4-1: List of Tables Channel Characteristics................................................... 3 Crosstalk..........................................................................
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PXI-9527 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.
1.1 Features X X X X X X X X X X X PXI specification Rev. 2.2 compliant 24-Bit Sigma-Delta ADC and DAC 2-CH simultaneous sampling analog inputs 2-CH simultaneous updated analog outputs 432 kS/s maximum ADC sampling rate with software programmable rate 216 kS/s maximum DAC update rate with software programmable rate Programmable input range: ±40 V, ±10 V, ±3.16 V, ±1 V, ±0.316 V Programmable output range: ±0.
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.
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 ±40 V 0.5 ±10 V 0.2 AI offset error ±3.16 V 0.1 ±1 V 0.05 ±0.316 V 0.05 AI gain error ±10 V, ±3.16 V, ±1 V, ±0.316 V ±0.2% ±40 V ±0.5% Table 1-3: Transfer Characteristics Analog Input Channel Bandwidth Input range Bandwidth (-3dB) ±40 V, ±10 V, ±3.16 V, ±1 V, and ±0.
PXI-9527 Figure 1-1: Analog Input Channel Bandwidth, ±10 V Input Range AC Coupling -3 dB cutoff frequency 3.5 Hz -0.
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 chassis 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.
Output Impedance Differential configuration Pseudo-differential configuration Between positive output and chassis ground 50 KΩ 10 KΩ Between negative output and chassis ground 50 KΩ 50 Ω Between positive and negative outputs 10 KΩ 10 KΩ Table 1-9: Output Impedance AO Dynamic Characteristics Bandwidth (-3dB) AO THD + N 110 kHz 100 Hz - 20 kHz, 200 kS/s ±0.
PXI-9527 1.3.3 Triggers, Timebase Triggers Trigger source Software command, analog input, external digital trigger, PXI star trigger, and PXI trigger bus [0..
1.3.4 General Specifications Bus and Physical Bus interface PCI, 32 bit/ 33MHz PCI Bus Signaling Universal PCI, support 3.3 V and 5 V PCI signals Physical dimensions 160 W x 100 H mm (6.3 x 3.94 in.
PXI-9527 1.4 Software Support ADLINK provides versatile software drivers and packages to suit various user approaches to building a system. Aside from programming libraries, such as DLLs, for most Windows-based systems, ADLINK also provides drivers for other application environments such as LabVIEW®. All software options are included in the ADLINK All-in-One CD. Commercial software drivers are protected with licensing codes.
1.4.3 Application Software ADLINK’s Dynamic Signal Assistant is a ready-to-run software utility designed for dynamic signal acquisition modules, such as the PXI-9527. This software provides a windows-based configuration interface for setting parameters, in addition to a real-time visualized data display on the screen. An instrument-like user interface is also provided for basic waveform generation. The Dynamic Signal Assistant can also log data acquired from hardware modules.
PXI-9527 The Input window provides operation of AI channels, such as: X X X X Channel configuration: change AI channels settings and start/stop acquisition Time domain chart: displays acquired data with time domain mode Freq domain chart: calculates acquired data frequency response and displays the result Zoom, copy, save, and print operations for chart images are all provided by buttons above the displayed charts Figure 1-4: DSA Input Interface Introduction 13
The Output window provides operation of AI channels, such as: X X X X Output of offset, amplitude, frequency, and phase can be set by, first, settings at the left Input of the desired number is enabled via the center keypad Channels can be enabled/disabled and preferred output patterns chosen by the bottom buttons The top “OUTPUT” button executes AO channel output Figure 1-5: DSA Output Interface 14 Introduction
PXI-9527 2 Getting Started This chapter describes proper installation environment, installation procedures, package contents and basic information users should be aware of regarding the PXI-9527. Diagrams and illustrated equipment are for reference only. Actual system configuration and specifications may vary. NOTE: 2.1 Installation Environment When unpacking and preparing to install, please refer to Important Safety Instructions.
Inspect the carton and packaging for damage. Shipping and handling could cause damage to the equipment inside. Make sure that the equipment and its associated components have no damage before installation. CAUTION: The equipment must be protected from static discharge and physical shock. Never remove any of the socketed parts except at a static-free workstation. Use the anti-static bag shipped with the product to handle the equipment and wear a grounded wrist strap when servicing. 2.
PXI-9527 2.3 Device Layout and IO Array All dimensions are in mm NOTE: 165.04 100 162.54 210.
The PXI-9527 I/O array is labeled to indicate connectivity, as shown. Figure 2-2: PXI-9527 I/O array 2.4 Installing the module 1. Turn off the PXI system/chassis and disconnect the power cable from the power source. 2. Align the module’s edge with the module guide in the PXI chassis. 3. Slide the module into the chassis until resistance is felt from the PXI connector. 4. Push the ejector upwards and fully insert the module into the chassis.
PXI-9527 5. Once the module is fully seated, a “click” can be heard from the ejector latch. 6. Tighten the screw on the front panel. 7. Connect the power plug to a power source and turn on the PXI system/chassis. 2.5 Signal Connection 2.5.1 BNC Connector Polarity BNC connector polarity is as shown. Positive (+) Negative (-) 2.5.
2.5.3 Analog Output Connection If the DUT inputs are ground-referenced, differential output mode can eliminate measurement errors caused by ground loops. If the DUT inputs are in a floating system, such as a floating earphone, pseudo-differential output mode provides a reference ground connected to the positive output of the BNC through a 50 Ω resistor.
PXI-9527 3 Operations This chapter contains information regarding analog input, analog output, triggering and timing for the PXI-9527. 3.
3.2 Analog Input Channel 3.2.1 Analog Input Front-End Configuration Figure 3-1: Analog Input Architecture of the PXI-9527 Differential and Pseudo-Differential Input Configuration The PXC-9527 provides both differential and psuedo-differential input configurations. The differential input mode provides voltage to the anode and cathode inputs of the BNC connector according to signal voltage difference between them.
PXI-9527 AC and DC Input Coupling AC and DC coupling are available. With DC coupling, DC offset present in the input signal is passed to ADC. DC coupling is indicated if the signal source has a small level of offset voltage or if DC content of the signal is important. In AC coupling, the DC offset present in the input signal is erased. AC coupling is indicated if the DC content of the input signals is to be rejected. AC coupling enables a high pass R-C filter through the input signal path.
Transfer characteristics of various input ranges of the PXI-9527 are as follows. Data format of the PXI-9527 is 2’s complement. Description Bipolar Analog Input Digital Code Full-scale range Least significant bit FSR-1LSB -FSR ±40 V 4.76 uV 39.99999952 V -40 V ±10 V 1.19 uV 9.99999881 V -10 V ±3.1622776V 0.37uV 3.1622773 V -3.1622776 V ±1V 0.119 uV 0.999999881V -1 V ±0.316227 V 0.037uV 0.31622773 V -0.
PXI-9527 3.2.3 ADC and Analog Input Filter ADC (Analog-to-Digital Converter) The PXI-9527 provides sigma-delta analog-to-digital converters, suitable for vibration, audio, and acoustic measurement. The analog side of the sigma-delta ADC is 1-bit, and the digital side performs oversampling, noise shaping and digital filtering. For example, if a desired sampling rate is 108kS/s, each ADC samples input signals at 6.912MS/s, 64 times the sampling rate. The 1-bit 6.
Bus-Mastering Dma Data Transfer PCI bus-mastering DMA is essential for continuous data streaming, as it helps to achieve full potential PCI bus bandwidth and improve bus efficiency. The bus-mastering controller controls the PCI bus, with the host CPU unburdened, since data is directly transferred to the host memory without intervention. Once analog input begins, the DMA returns control of the program.
PXI-9527 First PCI Address PCI Address PCI Address First Dual Address Dual Address Dual Address Transfer Size Transfer Size Transfer Size Next Descriptor Next Descriptor Next Descriptor PCI Bus Local Memory (FIFO) Figure 3-2: Linked List of PCI Address DMA Descriptors 3.3 Analog Output Channel Attenuator x1 x0.1 x0.
3.3.1 Analog Output Front-End Configuration Differential and Pseudo-Differential Output Configuration Differential output provides voltage to the anode and cathode outputs of the BNC connector according to DAC output voltage difference between the two. If the DUT inputs are ground-referenced, the differential output mode can be used for the elimination of measurement errors caused by ground loops.
PXI-9527 Description Digital Input Code Midscale –1LSB FFFFFF -1.19 uV -0.119 uV -0.012 uV -FSR 800000 -10 V -1 V -0.1 V Bipolar Analog Output Table 3-6: Digital Input Code and Analog Output Range 3.3.3 DAC and Analog Output Filter DAC (Digital-to-Analog Converter) The PXI-9527 provides two 24-bit delta-sigma DACs, separating sample rates into four regions between 1kS/s and 216kS/s, as shown in Table 3-7, “DAC (Digital-to-Analog Converter)”.
Bus-mastering DMA Data Transfer For analog output, data is transferred from host PC memory to onboard FIFO by DMA transfer. Please see Section 3.2.4: FIFO and DMA Transfer For Analog Input for a detailed description. 3.4 Trigger Source and Trigger Mode This section details PXI-9527 triggering operations. Since AI and AO share the same trigger source, when their operations are simultaneously enabled, the trigger signal is valid only when both are ready to receive the trigger signal.
PXI-9527 Software Trigger The software trigger, generated by software command, is asserted immediately following execution of specified function calls to begin the operation. External Digital Trigger An external digital trigger is generated when a TTL rising edge or a falling edge is detected at the SMB connector on the front panel. As shown, trigger polarity can be selected by software.
connected bus provided by PXI Trigger Bus, multiple modules are easily synched. When configured as input, the PXI-9527 serves as a slave module and can accept trigger signals from one of buses 0 through 7. When configured as output, the PXI9527 serves as a master module and can output trigger signals to the PXI Trigger Bus Numbers 0 through 7. Analog Trigger The PXI-9527 analog trigger circuitry can be configured to monitor one analog input channel from which data is acquired.
PXI-9527 Trigger Export The PCI/PXI-9527 can export trigger signals to the SMB TRG IO on the front panel, and PXI Trigger Bus Numbers 0 through 7. The TRG IO on the front panel can also be programmed to output the trigger signal when the trigger source is generated by software, PXI STAR, or PXI Trigger Bus Numbers 0 through 7. The PXI-9527 utilizes PXI Trigger Bus Numbers 0 through 7 to act as the System Synchronization Interface.
Figure 3-7: Post-trigger Acquisition / Waveform Generation Delay Trigger Mode If delay trigger mode is configured, delay time from when the trigger event asserts to the beginning of the acquisition and waveform generation can be specified, as shown. Delay time is specified by a 32-bit counter value with the counter clocking based on the PCI clock. Accordingly, maximum delay time is the period of PCI_CLK X (232 - 1) and minimum is the period of PCI_CLK.
PXI-9527 To drive the sigma-delta ADC and DAC, an onboard timebase clock is applied. The timebase clock frequency exceeds the sample rate and is produced by a DDS chip. The output frequency of DDS chip is programmable with excellent resolution. The PXI9527 accepts the external 10MHz clock from the PXI backplane for better synchronization between modules. 3.5.
ADC Filter Delay Update Rate (kS/s) Filter Delay (Samples) 2 K - 54 kS/s 12 54 K-108 kS/s 7 108 K-216 kS/s 5 216 K-432 kS/s 5 Table 3-9: ADC Filter Delay DAC Filter Delay Update Rate (kS/s) Filter Delay (Samples) 2 K - 54 kS/s 43.4 54 K-108 kS/s 87.5 108 K-216 kS/s 176.
PXI-9527 4 Calibration This chapter introduces the calibration process to minimize analog input measurement errors and analog output errors. 4.1 Calibration Constant The PXI-9527 is factory calibrated before shipment, with associated calibration constants written to the onboard EEPROM. At system boot, the PXI-9527 driver loads these calibration constants, such that analog input path and analog output circuit errors are minimized. ADLINK provides a software API for calibrating the PXI-9527.
4.2 Auto-Calibration Because errors in measurement and outputs will vary with time and temperature, re-calibration is recommended when the module is installed. Auto-calibration can measure and minimize errors without external signal connections, reference voltages, or measurement devices. The PXI-9527 has an on-board calibration reference to ensure the accuracy of auto-calibration. The reference voltage is measured on the production line and recorded in the on-board EEPROM.
PXI-9527 Sampling Rate Offset Compensation Time 54 kS/s 108 K/s 2 kS/s 107.999 kS/ 215.999 kS/ 53.999 kS/s s s 6.2 sec 2.6 sec 1.3 sec 216 kS/s 432 kS/s 0.
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PXI-9527 Important Safety Instructions For user safety, please read and follow all instructions, WARNINGS, CAUTIONS, and NOTES marked in this manual and on the associated equipment before handling/operating the equipment. X X X X X Read these safety instructions carefully. Keep this user’s manual for future reference. Read the specifications section of this manual for detailed information on the operating environment of this equipment.
X X Never attempt to fix the equipment. Equipment should only be serviced by qualified personnel. A Lithium-type battery may be provided for uninterrupted, backup or emergency power. Risk of explosion if battery is replaced with an incorrect type; please dispose of used batteries appropriately.
PXI-9527 Getting Service Contact us should you require any service or assistance. ADLINK Technology, Inc. Address: 9F, No.166 Jian Yi Road, Zhonghe District New Taipei City 235, Taiwan ᄅؑקխࡉ৬ԫሁ 166 ᇆ 9 ᑔ Tel: +886-2-8226-5877 Fax: +886-2-8226-5717 Email: service@adlinktech.com Ampro ADLINK Technology, Inc. Address: 5215 Hellyer Avenue, #110, San Jose, CA 95138, USA Tel: +1-408-360-0200 Toll Free: +1-800-966-5200 (USA only) Fax: +1-408-360-0222 Email: info@adlinktech.com ADLINK Technology (China) Co.
ADLINK Technology (Europe) GmbH Address: Nord Carree 3, 40477 Duesseldorf, Germany Tel: +49-211-495-5552 Fax: +49-211-495-5557 Email: emea@adlinktech.com ADLINK Technology, Inc. (French Liaison Office) Address: 15 rue Emile Baudot, 91300 Massy CEDEX, France Tel: +33 (0) 1 60 12 35 66 Fax: +33 (0) 1 60 12 35 66 Email: france@adlinktech.com ADLINK Technology Japan Corporation Address: ͱ101-0045 ᵅҀ䛑गҷ⬄ऎ⼲⬄䤯 ⬎ފ3-7-4 ⼲⬄ 374 ɛɳ 4F KANDA374 Bldg.
