The Tektronix TCP312 is an AC/DC current probe engineered for precision current measurement on Tektronix oscilloscopes. It combines transformer and Hall effect technologies to deliver DC to 100 MHz bandwidth with 30 A DC maximum capability and 50 A peak current handling. The split-core design enables non-invasive insertion on conductors up to 3.8 mm, 5 mm, or 21 mm × 25 mm depending on configuration. Minimum measurable current reaches 1 mA, with 5 mA achievable at ±3% DC accuracy. Rise time of ≤3.5 ns or ≤23 ns supports fast transient capture across the full bandwidth.
Status indicators provide real-time visual feedback on probe operation and error conditions including degauss, probe open, overload, improper 50 Ω termination, and incompatible probe types. Low DC drift and noise characteristics enable reliable low-level current measurements. The probe operates across 0 °C to +50 °C at altitudes to 2000 m and carries 600 VRMS CAT I & II and 300 VRMS CAT III bare wire voltage ratings.
Technical Specifications
• Bandwidth: DC to 100 MHz
• Maximum DC Current: 30 A
• Maximum Peak Current: 50 A
• Minimum Current Measurement: 1 mA
• DC Accuracy Threshold: 5 mA at ±3% or 1 mA
• Rise Time: ≤3.5 ns or ≤23 ns
• Input Coupling: AC/DC
• Construction: Split-core
• Probe Cable Length: 1.5 m, 2 m, or 8 m
• Jaw Size (Maximum Conductor): 3.8 mm, 5 mm, or 21 mm × 25 mm
• Bare Wire Voltage Rating: 600 VRMS CAT I & II; 300 VRMS CAT III
• Probe Dimensions: 20 cm × 1.6 cm × 3.2 cm
• Probe Weight: 0.15 kg
• Operating Temperature: 0 °C to +50 °C
• Operating Humidity: 5 to 85% R.H.
• Operating Altitude: Up to 2000 m
– Key Features
• Low insertion impedance for minimal circuit loading
• Status indicator array signals degauss, overload, termination, and compatibility issues
• Low DC drift and noise floor for sub-5 mA measurements
• Maximum amp-second product: 50 A·μs to 1 A/V (amplifier-dependent)
– Compatibility & Integration
Operation requires the TCPA300 amplifier (90–264 V, 47–440 Hz, 50 W max, CAT II). Compatible with Tektronix oscilloscopes featuring TEKPROBE Level II or TekConnect interfaces. TPA-BNC adapter required for DPO3000, MDO/MSO/DPO4000, MSO/DPO5000, and DPO7000 series. Integrates with TDSPWR2 power measurement software.
