Product Overview
The National Instruments 158561A-01L is an NI ordering part number. NI assigns part numbers to distinguish specific hardware configurations, accessory variants, and ordering options. The part number on a label or packing document allows engineers and procurement staff to confirm exactly which item was ordered and delivered.
This level of identification is important because NI product families often contain many variants that look similar but differ in connector type, cable length, channel count, or bundled items. Using the full part number avoids ambiguity when specifying, ordering, and documenting equipment.
Configuration and Compatibility
Part numbers support compatibility verification. Before connecting an accessory or module to a system, engineers should confirm that the part number matches the intended configuration and that it is compatible with the host hardware and software. Checking compatibility early prevents delays caused by mismatched connectors or unsupported options.
Where an accessory forms part of a measurement chain, its characteristics can affect measurement quality. Cable length, shielding, and connector quality all influence signal integrity. Engineers should review the specifications associated with the part number and compare them with the requirements of the application.
Documentation and Traceability
Recording part numbers in system documentation creates a configuration baseline that supports maintenance, calibration, and future expansion. When a system is replicated on additional stations, the documented part numbers provide the bill of materials needed to build identical setups.
Traceability is especially important in regulated industries, where equipment must be identified and controlled. Linking part numbers to calibration records and maintenance logs makes it easier to demonstrate that the correct hardware was used during testing.
Procurement Practice
Procurement teams should use the complete part number when placing orders. Short names and general descriptions are useful for discussion but are not sufficient to guarantee the correct variant. Confirm the part number against the latest product documentation before committing to a purchase.
Where multiple units are required, standardizing on one part number simplifies spares management and reduces the risk of mixing incompatible variants in the same system. Storage and labeling practices should keep part numbers visible so that items can be identified without opening packaging.
Integration Considerations
Integration planning should include the part number, associated accessories, and any software or driver requirements. Engineers should verify that the host system supports the hardware variant and that the required drivers are available for the operating system in use.
Physical installation should account for cable routing, strain relief, and environmental limits. Good practice includes documenting the installation with photographs and notes so that the system can be serviced or replicated. These records complement the part number documentation and improve long term maintainability.
Typical Applications
Configuration baseline and bill of materials control
Procurement of replacement and spare items
Compatibility verification before integration
Calibration and maintenance traceability
Replication of validated test setups
Inventory and asset identification
The National Instruments 158561A-01L is an NI ordering part number used to identify a specific hardware configuration or accessory. Accurate recording and use of the part number supports procurement, compatibility checks, and consistent system documentation.
