National Instruments Network Card NI 9229 User Manual

OPERATING INSTRUCTIONS AND SPECIFICATIONS  
NI 9229/9239  
4-Channel, 60/ 10 V, 24-Bit Simultaneous,  
Channel-to-Channel Isolated Analog Input Modules  
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Safety Guidelines  
Operate the NI 9229/9239 only as described in these operating  
instructions.  
Hot Surface This icon denotes that the component may be  
hot. Touching this component may result in bodily injury.  
Safety Guidelines for Hazardous Voltages  
If hazardous voltages are connected to the module, take the  
following precautions. A hazardous voltage is a voltage greater  
than 42.4 Vpk or 60 VDC to earth ground.  
Caution Ensure that hazardous voltage wiring is  
performed only by qualified personnel adhering to local  
electrical standards.  
Caution Do not mix hazardous voltage circuits and  
human-accessible circuits on the same module.  
Caution Make sure that devices and circuits connected to  
the module are properly insulated from human contact.  
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Caution When module terminals are hazardous voltage  
LIVE (>42.4Vpk/60 VDC), you must ensure that devices  
and circuits connected to the module are properly  
insulated from human contact. You must use the NI 9971  
connector backshell kit to ensure that the terminals are  
not accessible.  
Figure 1 shows the NI 9971 connector backshell.  
Figure 1. NI 9971 Connector Backshell  
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Safety Guidelines for Hazardous Locations  
The NI 9229/9239 is suitable for use in Class I, Division 2,  
Groups A, B, C, D, T4 hazardous locations; Class I, Zone 2,  
AEx nA IIC T4, and Ex nA IIC T4 hazardous locations; and  
nonhazardous locations only. Follow these guidelines if you are  
installing the NI 9229/9239 in a potentially explosive environment.  
Not following these guidelines may result in serious injury or  
death.  
Caution Do not disconnect I/O-side wires or connectors  
unless power has been switched off or the area is known  
to be nonhazardous.  
Caution Do not remove modules unless power has been  
switched off or the area is known to be nonhazardous.  
Caution Substitution of components may impair  
suitability for Class I, Division 2.  
Caution For Zone 2 applications, install the system  
in an enclosure rated to at least IP 54 as defined by  
IEC 60529 and EN 60529.  
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Caution For Zone 2 applications, install a protection  
device between the input signal and the NI 9229/9239  
input terminal. The device must prevent the input  
channel-to-COM voltage from exceeding 85 V if there is  
a transient overvoltage condition.  
Caution For Zone 2 applications, connected signals must  
be within the following limit:  
Capacitance..........................0.01 μF max  
Special Conditions for Hazardous Locations Use in Europe  
This equipment has been evaluated as Ex nA IIC T4 equipment  
under DEMKO Certificate No. 07 ATEX 0626664X. Each module  
is marked  
II 3G and is suitable for use in Zone 2 hazardous  
locations. If you are using the NI 9229/9239 in Gas  
Group IIC hazardous locations or in ambient temperatures of  
–40 °C Ta 70 °C, you must use the device in an NI chassis that  
has been evaluated as EEx nC IIC T4, Ex nA IIC T4, or  
Ex nL IIC T4 equipment.  
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Special Conditions for Marine Applications  
Some modules are Lloyd’s Register (LR) Type Approved for  
marine applications. To verify Lloyd’s Register certification, go to  
ni.com/certification and search for the LR certificate, or  
look for the Lloyd’s Register mark on the module.  
Caution To meet radio frequency emission requirements  
for marine applications, use shielded cables and install  
the system in a metal enclosure. Suppression ferrites  
must be installed on power supply inputs near power  
entries to modules and controllers. Power supply and  
module cables must be separated on opposite sides of the  
enclosure and must enter and exit through opposing  
enclosure walls.  
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Connecting the NI 9229/9239  
The NI 9229/9239 provides connections for four simultaneously  
sampled, isolated analog input channels.  
AI0+  
AI0–  
0
1
AI1+  
AI1–  
0
1
AI2+  
AI2–  
0
1
AI3+  
AI3–  
0
1
Figure 2. NI 9229/9239 Terminal Assignments  
NI 9229/9239  
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The NI 9229/9239 has four 2-terminal detachable screw-terminal  
connectors.  
Note You must use 2-wire ferrules to create a secure  
connection when connecting more than one wire to a  
single terminal on the NI 9229/9239.  
You can connect ground-referenced or floating signal sources to  
the NI 9229/9239. Connect the positive signal of the signal source  
to the AI+ terminal or connector, and connect the negative signal  
of the signal source to the AI– terminal or connector. If you make  
a ground-referenced connection between the signal source and the  
NI 9229/9239, make sure the voltage on the AI+ and AI–  
connections are in the channel-to-earth safety voltage range to  
ensure proper operation of the NI 9229/9239. Refer to the  
Specifications section for more information about operating  
voltages and overvoltage protection. Refer to Figures 3 and 4 for  
illustrations of how to connect grounded and floating signal  
sources to the NI 9229/9239.  
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Signal  
Source  
AI+  
AI–  
+
NI 9229/9239  
Figure 3. Connecting a Grounded Signal Source to the NI 9229/9239  
Signal  
Source  
AI+  
+
AI–  
NI 9229/9239  
Figure 4. Connecting a Floating Signal Source to the NI 9229/9239  
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The NI 9229/9239 analog input channels are floating with respect  
to earth ground and each other. The incoming analog signal on each  
channel is conditioned, buffered, and then sampled by a 24-bit  
Delta-Sigma ADC.  
Each channel provides an independent signal path and ADC,  
enabling you to sample all four channels simultaneously. Refer to  
Figure 5 for an illustration of the circuitry for one channel.  
AI+  
Overvoltage  
ADC  
Protection  
AI–  
Amplifier Prefilter  
NI 9229/9239  
Figure 5. Input Circuitry for One Channel of the NI 9229/9239  
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Wiring for High-Vibration Applications  
If an application is subject to high vibration, National Instruments  
recommends that you either use ferrules to terminate wires to the  
detachable screw-terminal connector or use the NI 9971 backshell  
kit to protect the connections. Refer to Figure 6 for an illustration  
of using ferrules. Refer to Figure 1 for an illustration of the  
NI 9971 connector backshell.  
Figure 6. 2-Terminal Detachable Screw-Terminal Connector with Ferrule  
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Understanding NI 9229/9239 Filtering  
The NI 9229/9239 uses a combination of analog and digital  
filtering to provide an accurate representation of in-band signals  
while rejecting out-of-band signals. The filters discriminate  
between signals based on the frequency range, or bandwidth, of the  
signal. The three important bandwidths to consider are the  
passband, the stopband, and the alias-free bandwidth.  
The NI 9229/9239 represents signals within the passband, as  
quantified primarily by passband flatness and phase nonlinearity.  
All signals that appear in the alias-free bandwidth are either  
unaliased signals or signals that have been filtered by at least the  
amount of the stopband rejection.  
Passband  
The signals within the passband have frequency-dependent gain or  
attenuation. The small amount of variation in gain with respect to  
frequency is called the passband flatness. The digital filters of the  
NI 9229/9239 adjust the frequency range of the passband to match  
the data rate. Therefore, the amount of gain or attenuation at a  
given frequency depends on the data rate. Figure 7 shows typical  
passband flatness for the NI 9229/9239.  
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0.025  
0.000  
–0.025  
–0.050  
0
0.1  
0.2  
0.3  
0.4  
0.5  
Frequency/Data Rate  
Figure 7. Typical Passband Flatness for the NI 9229/9239  
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Stopband  
The filter significantly attenuates all signals above the stopband  
frequency. The primary goal of the filter is to prevent aliasing.  
Therefore, the stopband frequency scales precisely with the data  
rate. The stopband rejection is the minimum amount of attenuation  
applied by the filter to all signals with frequencies within the  
stopband.  
Alias-Free Bandwidth  
Any signal that appears in the alias-free bandwidth of the  
NI 9229/9239 is not an aliased artifact of signals at a higher  
frequency. The alias-free bandwidth is defined by the ability of the  
filter to reject frequencies above the stopband frequency and equals  
the data rate minus the stopband frequency.  
Understanding NI 9229/9239 Data Rates  
The frequency of a master timebase (fM) controls the data rate (fs)  
of the NI 9229/9239. The NI 9229/9239 includes an internal master  
timebase with a frequency of 12.8 MHz, but the module also can  
accept an external master timebase or export its own master  
timebase. To synchronize the data rate of an NI 9229/9239 with  
other modules that use master timebases to control sampling, all of  
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the modules must share a single master timebase source. Refer to  
the software help for information about configuring the master  
timebase source for the NI 9229/9239. Visit ni.com/info and  
enter cseriesdoc for information about C Series documentation.  
The following equation provides the available data rates of the  
NI 9229/9239:  
f
÷ 256  
n
--M------------------  
fs =  
where n is any integer from 1 to 31.  
However, the data rate must remain within the appropriate data rate  
range. Refer to the Specifications section for more information  
about the data rate range. When using the internal master timebase  
of 12.8 MHz, the result is data rates of 50 kS/s, 25 kS/s, 16.67 kS/s,  
and so on down to 1.613 kS/s, depending on the value of n. When  
using an external timebase with a frequency other than 12.8 MHz,  
the NI 9229/9239 has a different set of data rates.  
Note The cRIO-9151 R Series Expansion chassis does  
not support sharing timebases between modules.  
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Sleep Mode  
This module supports a low-power sleep mode. Support for sleep  
mode at the system level depends on the chassis that the module is  
plugged into. Refer to the chassis manual for information about  
support for sleep mode. If the chassis supports sleep mode, refer to  
the software help for information about enabling sleep mode. Visit  
ni.com/info and enter cseriesdoc for information about  
C Series documentation.  
Typically, when a system is in sleep mode, you cannot  
communicate with the modules. In sleep mode, the system  
consumes minimal power and may dissipate less heat than it does  
in normal mode. Refer to the Specifications section for more  
information about power consumption and thermal dissipation.  
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Specifications  
The following specifications are typical for the range –40 to 70 °C  
unless otherwise noted. All voltages are relative to the AI– signal  
on each channel unless otherwise noted. The specifications are the  
same for the NI 9229 and the NI 9239 unless otherwise noted.  
Input Characteristics  
Number of channels..........................4 analog input channels  
ADC resolution.................................24 bits  
Type of ADC.....................................Delta-Sigma (with analog  
prefiltering)  
Sampling mode.................................Simultaneous  
Internal master timebase (fM)  
Frequency...................................12.8 MHz  
Accuracy..................................... 100 ppm max  
Data rate range (fs) using internal master timebase  
Minimum....................................1.613 kS/s  
Maximum ...................................50 kS/s  
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Data rate range (fs) using external master timebase  
Minimum....................................390.625 S/s  
Maximum ...................................51.2 kS/s  
f
÷ 256  
n
--M------------------  
1
Data rates (fs)...................................  
, n = 1, 2, …, 31  
Input voltage ranges (AI+ to AI–)2  
Module  
NI 9229  
NI 9239  
Nominal (V)  
Typical (V)  
62.64  
Minimum (V)  
61.5  
60  
10  
10.52  
10.3  
Overvoltage protection ..................... 100 V  
Input coupling...................................DC  
Input impedance (AI+ to AI–)..........1 MΩ  
1
The data rate must remain within the appropriate data rate range. Refer to the  
Understanding NI 9229/9239 Data Rates section for more information.  
2
Refer to the Safety Guidelines section for more information about safe operating  
voltages.  
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Accuracy, NI 9229  
Percent of  
Range*  
(Offset Error)  
Percent of  
Reading  
(Gain Error)  
Measurement Conditions  
Calibrated max (–40 to 70 °C)  
Calibrated typ (25 °C, 5 °C)  
Uncalibrated max (–40 to 70 °C)  
Uncalibrated typ (25 °C, 5 °C)  
* Range equals 62.64 V  
0.13%  
0.03%  
1.2%  
0.05%  
0.008%  
0.55%  
0.11%  
0.3%  
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Accuracy, NI 9239  
Percent of  
Range*  
(Offset Error)  
Percent of  
Reading  
(Gain Error)  
Measurement Conditions  
Calibrated max (–40 to 70 °C)  
Calibrated typ (25 °C, 5 °C)  
Uncalibrated max (–40 to 70 °C)  
Uncalibrated typ (25 °C, 5 °C)  
* Range equals 10.52 V  
0.13%  
0.03%  
1.4%  
0.06%  
0.008%  
0.70%  
0.11%  
0.3%  
Input noise  
NI 9229.......................................320 μVrms  
NI 9239.......................................70 μVrms  
Stability  
Gain drift .................................... 5 ppm/°C  
Offset drift  
NI 9229 ................................ 150 μV/°C  
NI 9239 ................................ 26 μV/°C  
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Post calibration gain match  
(ch-to-ch, 20 kHz).............................0.22 dB max  
Crosstalk (1 kHz)..............................130 dB  
Phase mismatch (ch-to-ch)  
NI 9229.......................................0.045°/kHz max  
NI 9239.......................................0.075°/kHz max  
Phase mismatch (module-to-module, max)  
NI 9229.......................................0.045°/kHz + 360°· fin/fM  
NI 9239.......................................0.075°/kHz + 360°· fin/fM  
Phase nonlinearity (fs = 50 kS/s).......0.11° max  
Input delay  
NI 9229.......................................38.4/fs + 2.6 μs  
NI 9239.......................................38.4/fs + 3 μs  
Passband  
Frequency...................................0.453 · fs  
Flatness (fs = 50 kS/s)................. 100 mdB max  
Stopband  
Frequency...................................0.547 · fs  
Rejection.....................................100 dB  
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Alias-free bandwidth ........................0.453 · fs  
–3 dB prefilter bandwidth  
(fs = 50 kS/s)......................................24.56 kHz  
CMRR (fin = 60 Hz)  
NI 9229.......................................116 dB  
NI 9239.......................................126 dB  
SFDR (1 kHz, –60 dBFS).................128 dBFS  
Total Harmonic Distortion (THD)  
1 kHz, –1 dBFS ..........................99 dB  
1 kHz, –20 dBFS ........................105 dB  
MTBF ...............................................662,484 hours at 25 °C;  
Bellcore Issue 2, Method 1,  
Case 3, Limited Part Stress  
Method  
Note Contact NI for Bellcore MTBF specifications  
at other temperatures or for MIL-HDBK-217F  
specifications.  
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Power Requirements  
Power consumption from chassis  
Active mode ...............................740 mW max  
Sleep mode .................................25 μW max  
Thermal dissipation (at 70 °C)  
Active mode ...............................760 mW max  
Sleep mode .................................16 mW max  
Physical Characteristics  
If you need to clean the module, wipe it with a dry towel.  
Screw-terminal wiring ......................16 to 28 AWG copper  
conductor wire with 7 mm  
(0.28 in.) of insulation  
stripped from the end  
Torque for screw terminals ...............0.22 to 0.25 N · m  
(1.95 to 2.21 lb · in.)  
Ferrules .............................................0.25 mm2 to 0.5 mm2  
Weight...............................................147 g (5.2 oz)  
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Safety  
Safety Voltages  
Connect only voltages that are within the following limits.  
Channel-to-earth ground isolation  
Continuous .................................250 Vrms  
,
Measurement Category II  
Withstand....................................2,300 Vrms, verified by a 5 s  
dielectric withstand test  
Channel-to-channel isolation  
Continuous .................................250 Vrms  
,
Measurement Category II  
Withstand....................................1,390 Vrms, verified by a 5 s  
dielectric withstand test  
Zone 2 hazardous locations applications in Europe  
Maximum voltage  
(channel-to-earth ground  
and channel-to-channel) .............60 VDC,  
Measurement Category I  
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Measurement Category I is for measurements performed on  
circuits not directly connected to the electrical distribution system  
referred to as MAINS voltage. MAINS is a hazardous live  
electrical supply system that powers equipment. This category is  
for measurements of voltages from specially protected secondary  
circuits. Such voltage measurements include signal levels, special  
equipment, limited-energy parts of equipment, circuits powered by  
regulated low-voltage sources, and electronics.  
Caution Do not connect to signals or use for  
measurements within Measurement Categories II,  
III, or IV.  
Measurement Category II is for measurements performed on  
circuits directly connected to the electrical distribution system.  
This category refers to local-level electrical distribution, such as  
that provided by a standard wall outlet, for example, 115 V for U.S.  
or 230 V for Europe.  
Caution Do not connect to signals or use for  
measurements within Measurement Categories III or IV.  
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Safety Standards  
This product is designed to meet the requirements of the following  
standards of safety for electrical equipment for measurement,  
control, and laboratory use:  
IEC 61010-1, EN 61010-1  
UL 61010-1, CSA 61010-1  
Note For UL and other safety certifications, refer to the  
product label or visit ni.com/certification, search  
for the module number or product line, and click the  
appropriate link in the Certification column.  
Hazardous Locations  
U.S. (UL) ..........................................Class I, Division 2,  
Groups A, B, C, D, T4;  
Class I, Zone 2,  
AEx nA IIC T4  
Canada (C-UL) .................................Class I, Division 2,  
Groups A, B, C, D, T4;  
Class I, Zone 2,  
Ex nA IIC T4  
Europe (DEMKO).............................Ex nA IIC T4  
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Environmental  
National Instruments C Series modules are intended for indoor use  
only but may be used outdoors if installed in a suitable enclosure.  
Refer to the manual for the chassis you are using for more  
information about meeting these specifications.  
Operating temperature  
(IEC 60068-2-1, IEC 60068-2-2) .....40 to 70 °C  
Storage temperature  
(IEC 60068-2-1, IEC 60068-2-2) .....40 to 85 °C  
Ingress protection..............................IP 40  
Operating humidity  
(IEC 60068-2-56)..............................10 to 90% RH,  
noncondensing  
Storage humidity  
(IEC 60068-2-56)..............................5 to 95% RH,  
noncondensing  
Maximum altitude.............................2,000 m  
Pollution Degree (IEC 60664)..........2  
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Shock and Vibration  
To meet these specifications, you must panel mount the system and  
either affix ferrules to the ends of the terminal wires or use the  
NI 9971 backshell kit to protect the connections.  
Operating vibration  
Random (IEC 60068-2-64).........5 grms, 10 to 500 Hz  
Sinusoidal (IEC 60068-2-6) .......5 g, 10 to 500 Hz  
Operating shock  
(IEC 60068-2-27)..............................30 g, 11 ms half sine,  
50 g, 3 ms half sine,  
18 shocks at 6 orientations  
Electromagnetic Compatibility  
This product is designed to meet the requirements of the following  
standards of EMC for electrical equipment for measurement,  
control, and laboratory use:  
EN 61326 EMC requirements; Industrial Immunity  
EN 55011 Emissions; Group 1, Class A  
CE, C-Tick, ICES, and FCC Part 15 Emissions; Class A  
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Note For EMC compliance, operate this device with  
shielded cabling.  
CE Compliance  
This product meets the essential requirements of applicable  
European directives, as amended for CE marking, as follows:  
2006/95/EC; Low-Voltage Directive (safety)  
2004/108/EC; Electromagnetic Compatibility Directive  
(EMC)  
Note Refer to the Declaration of Conformity (DoC) for  
this product for any additional regulatory compliance  
information. To obtain the DoC for this product, visit  
ni.com/certification, search for the module number  
or product line, and click the appropriate link in the  
Certification column.  
Environmental Management  
National Instruments is committed to designing and manufacturing  
products in an environmentally responsible manner. NI recognizes  
that eliminating certain hazardous substances from our products is  
beneficial not only to the environment but also to NI customers.  
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For additional environmental information, refer to the NI and the  
Environment Web page at ni.com/environment. This page  
contains the environmental regulations and directives with which  
NI complies, as well as other environmental information not  
included in this document.  
Waste Electrical and Electronic Equipment (WEEE)  
EU Customers At the end of their life cycle, all products  
must be sent to a WEEE recycling center. For more  
information about WEEE recycling centers and National  
Instruments WEEE initiatives, visit ni.com/  
environment/weee.htm.  
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Calibration  
You can obtain the calibration certificate and information about  
calibration services for the NI 9229/9239 at ni.com/  
calibration.  
Calibration interval ...........................1 year  
Where to Go for Support  
The National Instruments Web site is your complete resource for  
technical support. At ni.com/support you have access to  
everything from troubleshooting and application development  
self-help resources to email and phone assistance from  
NI Application Engineers.  
National Instruments corporate headquarters is located at  
11500 North Mopac Expressway, Austin, Texas, 78759-3504.  
National Instruments also has offices located around the world to  
help address your support needs. For telephone support in the  
United States, create your service request at ni.com/support  
and follow the calling instructions or dial 512 795 8248. For  
telephone support outside the United States, contact your local  
branch office:  
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Australia 1800 300 800, Austria 43 662 457990-0,  
Belgium 32 (0) 2 757 0020, Brazil 55 11 3262 3599,  
Canada 800 433 3488, China 86 21 5050 9800,  
Czech Republic 420 224 235 774, Denmark 45 45 76 26 00,  
Finland 358 (0) 9 725 72511, France 01 57 66 24 24,  
Germany 49 89 7413130, India 91 80 41190000,  
Israel 972 3 6393737, Italy 39 02 41309277, Japan 0120-527196,  
Korea 82 02 3451 3400, Lebanon 961 (0) 1 33 28 28,  
Malaysia 1800 887710, Mexico 01 800 010 0793,  
Netherlands 31 (0) 348 433 466, New Zealand 0800 553 322,  
Norway 47 (0) 66 90 76 60, Poland 48 22 3390150,  
Portugal 351 210 311 210, Russia 7 495 783 6851,  
Singapore 1800 226 5886, Slovenia 386 3 425 42 00,  
South Africa 27 0 11 805 8197, Spain 34 91 640 0085,  
Sweden 46 (0) 8 587 895 00, Switzerland 41 56 2005151,  
Taiwan 886 02 2377 2222, Thailand 662 278 6777,  
Turkey 90 212 279 3031, United Kingdom 44 (0) 1635 523545  
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