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// RF Connectors

TriAx BNC 3-Conductor

Triaxial (TriAx) BNC connectors have three concentric conductors: inner signal, inner shield (guard), and outer shield (ground). Used for high-impedance low-noise measurements where a guard circuit eliminates leakage currents.

// Specifications
Standard
Triaxial connector standard
Conductors
3 (signal, guard, ground)
Impedance
50 or 75 ohm
Use Case
Low-noise measurements, electrometers, picoammeters
Guard
Inner shield driven at same potential as signal
Advantage
Eliminates cable leakage currents
// Pin Reference Table
Pin Name Function Type
1 Inner Signal conductor ADC
2 Guard Guard shield at signal potential I/O
3 Outer Ground outer shield GND