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PXI-4461
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PXI-4461, 2-Input/2-Output Channels, PXI Sound and Vibration DSA Device

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National Instruments PXI-4461 PXI Sound and Vibration Device

The PXI-4461 (Part Number: 779687-01) is intended for sound and vibration applications. This module gives two-channel dynamic signal generation and two-channel acquisition. One of six gain settings can be used to design the input range. The PXI-4461 incorporates programming configurable AC/DC coupling, IEPE conditioning, and the equipment and programming that is expected to make accuracy estimations with receivers, accelerometers, and different transducers that have large dynamic ranges. Common applications for this module include audio test, automotive noise, vibration, and harshness (NVH), and machine condition monitoring.

The NI PXI-4461 module supports two terminal arrangements for analog input: differential and pseudo-differential. The term pseudo-differential alludes to the way that there is 50 Ω of resistance between the external BNC shell and chassis frame. The analog input channels on this module also have digital filters to stop aliasing from occurring. The user can arrange the PXI-4461 input channels on a per channel premise. Therefore, the user can have one channel configured for differential mode and the other channel configured for pseudo-differential mode. Then, the user can arrange the channels in view of how the signal source or device under test (DUT) is referenced.

The acquisition clock of the NI PXI-4461 PXI Sound and Vibration Module’s can be synchronized with other devices in the user’s system for mixed-signal applications. Digital and analog triggering are features offered on this module. The analog input channels have 24-bit resolution analog-to-digital converters that are simultaneously sampled at software-programmable rates for regular audio applications. For example, one of these rates is 44.1 kS/s which is utilized in CD players. Another example is 48.0 kS/s which is the rate utilized in digital audio tape recorders and other types of professional digital audio devices. Additional datasheets and user manuals for the PXI-4461 can be found under the "Manuls & PDFs" tab.

While the PXI-4461 had a "Last Time Buy Date" of December 28, 2023 from National Instruments, the module will remain available for either Purchase or Repairs in perpetuity with Apex Waves.

ModelPXI-4461
ManufacturerNational Instruments
Part Number779687-01
HTS Code8471804000
TypePXI Sound and Vibration Module
Differential Analog Input Channels2
Analog Output Channels2
Analog Input CouplingAC/DC
Maximum Sampling Rate204.8 kS/s
Front Connection TypesBNC and SMB Connectors
# Gain Settings6
Highpass Filter Cut-Off Frequency3.4 Hz
Dimensions6.3 x 3.9 in.
Weight8.5 oz.
WarrantyThree Year Warranty
PXI-4461 ManualUser Manual and Maintenance Manual Available for Download
PriceContact a sales representative for a quote.

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National Instruments PXI-4461 Frequently Asked Questions

 

Question: What is the high pass filter cutoff frequency for the NI PXI-4461?

Answer: The NI PXI-4461 has a high pass filter cutoff frequency of 3.4 Hz.

 

Question: How many gain settings does the PXI 4461 National Instruments have?

Answer: The PXI 4461 National Instruments has 6 gain settings.

 

Question: What is the NI PXI-4461 driver?

Answer: The NI PXI-4461 driver is the NI-DAQmx driver software version 7.2 or later.

 

Question: What is the NI PXI-4461 price?

Answer: Call or email Apex Waves for the NI PXI-4461 price and availability!

 

Question: When switching between different gains on the PXI-4461, the first few values aren't valid. Why is this?

Answer: The PXI-4461's filter delay and use of a free-running clock are the causes of the incorrect values. There is a "buffer" of samples that were captured with the previous gain and filter settings before the user-configured acquisition started when the acquisition is initiated.

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PDI-4461, PCI-4461, PXI-E461, PXI-R461, PXI-44Y1
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