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National Instruments · PCI

NI PCI-6238

The NI PCI-6238 is a bank-isolated PCI multifunction DAQ card with eight ±20 mA analog inputs, 16-bit resolution and a maximum sampling rate of 250 kS/s. It also provides two current outputs, digital I/O and two 32-bit counters/timers.

ManufacturerNational Instruments
ModelPCI-6238
Part Number779623-01
Product TypeIsolated multifunction data acquisition card
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PlatformPCI multifunction DAQ
Analog inputs8 differential current inputs, ±20 mA
Input performance16-bit resolution; up to 250 kS/s
Analog outputs2 current outputs
Digital I/O6 inputs and 4 sourcing outputs
Counters/timers2 × 32-bit
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Overview

Product overview

Key product information and technical features.

The PCI-6238 combines current-signal acquisition, analog output and digital timing functions on a PCI card. NI identifies it as an M Series device with bank isolation.

NI documents NI-DAQmx support for configuration and measurement. Its analog inputs are not simultaneously sampled; account for this when planning multichannel measurements.

  • Bank-isolated analog and digital I/O.
  • Current acquisition through eight differential analog inputs.
  • Two analog current-output channels.
  • Dedicated digital input and sourcing-output lines.
  • Two 32-bit counters/timers for timing and counting tasks.
Verified specifications

Technical data

Verified product specifications.

Bus interfacePCI
Analog input channels8 differential current inputs
Analog input range±20 mA
Analog input resolution16 bits
Maximum analog input sample rate250 kS/s
Simultaneous samplingNo
Analog outputs2 current outputs, 16-bit
Analog output range0 to 20 mA
Maximum analog output update rate500 for one channel; 450 per channel for two channels kS/s
Digital I/O6 inputs; 4 sourcing outputs
Counters/timers2, each 32-bit
I/O connector37-pin D-SUB
Condition & included items

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Compatibility

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National Instruments

Manufacturer

PCI / M Series

Host interface and DAQ family

PCI-6238

Isolated current-input/output multifunction DAQ card

Driver

NI-DAQmx

Check the PCI-6238 pinout and NI accessory guide before selecting signal connections.
Manuals & software

Technical resources

Manuals, software and technical resources for this model.

NI PCI-6238 Product PageProduct Page · ni.com
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NI 6238 Device SpecificationsSpecifications And Pinout · download.ni.com
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62xx Models: DAQ Multifunction I/O Cable and Accessory CompatibilityAccessory Compatibility Guide · ni.com
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PCI-6238 Electrical Specifications and Connector PinoutTechnical resource
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Shipping, warranty & returns

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FAQ

Product-specific questions

Product-specific answers based on available technical information.

Does the PCI-6238 measure current or voltage?

Its eight differential analog inputs measure current over a ±20 mA range.

Are the analog inputs sampled simultaneously?

No. NI lists the PCI-6238 as a non-simultaneous-sampling device with a maximum sample rate of 250 kS/s.

Do the analog outputs require external power?

Yes. NI specifies an external 10 to 30 VDC supply for the analog current outputs.

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