NI BNC-2121 Shielded BNC Terminal Block

Technical Specifications

Model:BNC-2121

Brand:NI

Part No:BNC-2121

Product type:Shielded Counter/Timer BNC Signal Terminal Block

Interface:14×BNC female connectors,spring terminal block,68-pin female SCSI I/O connector

Mounting:Desktop mounting

Wire range:28~16 AWG copper wire

Dimension:216mm127mm44mm

Weight:0.82kg

Operating temperature:0℃ ~ +70℃

Storage temperature:-55℃ ~ +125℃

Relative humidity:5~90% non-condensing

Certification:CE

System compatibility

BNC-2121 belongs to NI DAQ signal shturl.cc/Q6 is compatible with NI multifunction DAQ and counter/timer boards,widely used in pulse measurement,quadrature encoder acquisition,automated test and industrial timing signal systems.It is spare part for legacy test equipment overhaul.

Function

BNC-2121 is a fully shielded BNC signal breakout terminal block dedicated for counter and timer signals.It converts 68-pin DAQ signals to 14 BNC ports and spring terminals,supports pulse-train,trigger and quadrature encoder signals.Metal shielding suppresses electromagnetic interference for stable timing measurement.

Installation

Fix BNC-2121 on desktop mounting bracket.Connect 68-pin SCSI cable to DAQ hardware,attach BNC coaxial cables and signal wires to spring terminals.Take ESD protection before wiring.

Interface

‑14 BNC female connectors

‑Spring terminal block

‑68-pin female SCSI I/O connector

‑LED status indicators

Feature

BNC-2121 classic NI counter/timer terminal block.Typical faults:BNC connector corrosion,spring terminal loose,68-pin interface oxidation.Clean connectors and inspect wiring before replacement.

Diagnostic

Fault phenomenon:timing signal jitter,intermittent pulse loss,encoder signal abnormal.Check BNC and terminal connection,inspect shielding integrity and cable condition.

Product Brief

BNC-2121 is NI shielded BNC breakout terminal block with 14 BNC ports and spring terminals,68-pin female SCSI interface,designed for counter,timer and quadrature encoder signals,desktop mounting.Mainly used for maintenance and replacement of old industrial test and measurement equipment.ESD protection must be followed during handling.