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National Instruments CAN OBD-II Cable Automotive CAN interface cable
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National Instruments · NI CAN interfaces

NI CAN OBD-II Cable

The NI CAN OBD-II Cable connects an NI high-speed CAN interface to an OBD-II vehicle with high-speed CAN at its diagnostic connector. NI also identifies this cable as the OBDII9M-DB9F CAN Cable, part 193942-02.

ManufacturerNational Instruments
ModelCAN OBD-II Cable
Part Number193942-02
Product TypeAutomotive CAN interface cable
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Part number193942-02
Length2 m
ConnectorsSAE J1962 male to 9-pin D-sub female
TerminationNone
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Overview

Product overview

Key product information and technical features.

This cable maps the vehicle's SAE J1962 CAN connections to the CiA-DS-102 D-sub wiring used by NI CAN interfaces. It provides the physical connection for accessing a vehicle's high-speed CAN network through its passenger-compartment diagnostic connector.

  • Locking tab helps prevent accidental disconnection from the vehicle.
  • Injection-molded cable construction.
  • Two unshielded 24 AWG twisted pairs carry CAN signals and supply connections.
Verified specifications

Technical data

Verified product specifications.

Cable length2 m
Vehicle connectorSAE J1962 OBD-II male
Interface connector9-pin D-sub female
TerminationNonterminated
Cable impedance120 Ω
Resistance at 20 °C93 Ω/km
Propagation delay5 ns/m
D-sub signal assignments2: CAN_L; 3: V−; 5: shield; 7: CAN_H; 9: V+
SAE J1962 signal assignments5: V−; 6: CAN_H; 14: CAN_L; 16: V+
Condition & included items

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Included

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Compatibility

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National Instruments

Manufacturer

NI high-speed CAN

Host interface

CAN OBD-II Cable

Vehicle connection accessory

Compatibility

NI lists PCI, PXI, USB, PCMCIA and CompactRIO CAN interfaces; the selected interface must support the required high-speed CAN connection.

The vehicle diagnostic connector must carry high-speed CAN. This cable has no built-in termination.
Manuals & software

Technical resources

Manuals, software and technical resources for this model.

Specifications for the CAN OBD-II CableSpecifications And Wiring Reference · ni.com
Open →
OBDII9M-DB9F CAN CableOfficial Product Page · ni.com
Open →
OBDII9M-DB9F CAN Cable Product CertificationsCertification Reference · ni.com
Open →
CAN Physical Layer and Termination GuideTechnical resource
Open →
Shipping, warranty & returns

Commercial terms

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Shipping
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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.

Is this the same cable NI calls OBDII9M-DB9F?

Yes. NI explicitly identifies CAN OBD-II Cable as an alternative name for OBDII9M-DB9F, part 193942-02.

Does it include a termination resistor?

No. Part 193942-02 is nonterminated; its 120 Ω cable impedance is not a built-in termination resistor.

Can it connect to every OBD-II vehicle?

NI specifies vehicles that expose high-speed CAN at the diagnostic connector; an OBD-II connector alone does not establish suitability.

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