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National Instruments · NI multifunction DAQ

NI BNC-2120

The NI BNC-2120 is a shielded connector block for supported NI DAQ devices. It combines signal breakout connections with a function generator, quadrature encoder, and thermocouple cold-junction compensation support.

ManufacturerNational Instruments
ModelBNC-2120
Part Number777960-01
Product TypeShielded BNC DAQ connector block with function generator
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30-Day Warrantystandard coverage
30-Day Returnspolicy applies
Technical Supportmodel & compatibility help
Manufacturer part number777960-01
Analog input connections8 differential BNC inputs
Analog output connections2 BNC connectors
MountingDesktop or optional DIN-rail mounting
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Overview

Product overview

Key product information and technical features.

The BNC-2120 provides accessible connections for analog signals, selected digital signals, and two user-defined signals. Its shielded enclosure supports measurement signal integrity.

Built-in signal-generation and encoder functions extend its role beyond a basic breakout block. NI documents its use with supported E, M, S, and X Series DAQ hardware; the required cable depends on the device.

  • Integrated function generator, quadrature encoder, temperature reference, and thermocouple connector.
  • Digital I/O screw terminals with line-state indicators.
  • Two user-defined BNC connections for routing selected digital or timing signals.
Verified specifications

Technical data

Verified product specifications.

DAQ interface68-pin I/O connector
Default analog inputs8 differential channels
Analog output connections2 BNC connectors
Function generator waveformsSine, triangle, and TTL-compatible square wave
Condition & included items

What the actual unit includes

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Condition

Confirmed per unit.

Included

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Revision

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Compatibility

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National Instruments

Manufacturer

NI multifunction DAQ

Supported host acquisition hardware

BNC-2120

External shielded signal connection accessory

Cable selection

Match the cable and DAQ connector to NI's device-specific compatibility guidance.

Do not use Connector 1 of NI 6225/6255 devices; confirm device-specific cable and pin mapping.
Manuals & software

Technical resources

Manuals, software and technical resources for this model.

NI BNC-2120 Product PageProduct Page · ni.com
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BNC-2120 Installation GuideInstallation Guide And Specifications · docs-be.ni.com
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NI DAQ Multifunction I/O Accessory GuideTechnical resource
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Shipping, warranty & returns

Commercial terms

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Warranty
30-Day Warranty. Standard coverage applies.
Returns
30-Day Returns. Return policy applies.
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FAQ

Product-specific questions

Product-specific answers based on available technical information.

Does the BNC-2120 replace a DAQ device?

No. It is a connection accessory used with supported NI DAQ hardware.

How does it differ from the BNC-2110?

NI describes the BNC-2120 as similar to the BNC-2110, with an added function generator, quadrature encoder, temperature reference, and thermocouple connector.

Is DIN-rail mounting supported?

Yes. NI lists DIN-rail mounting using an optional mounting kit, as well as desktop use.

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