The Tektronix TCPA300 is an AC/DC current measurement probe amplifier engineered for integration with Tektronix oscilloscopes and compatible TCP300 series current probes. It delivers accurate current measurements from DC to 100 MHz across industrial, power electronics, and component-level test applications. The amplifier features split-core probe construction for non-invasive circuit connection, low insertion impedance to minimize device-under-test loading, and automatic scaling with on-screen units display. AC/DC input coupling, low drift and noise characteristics, and comprehensive status indication enable confident low-level current measurement down to 1 mA at ±3% DC accuracy.
Technical Specifications
• Bandwidth: DC to 100 MHz
• Current Measurement Range (probe-dependent): 30 A DC (TCP312A, DC–100 MHz), 50 A DC (TCP305A, DC–50 MHz), 150 A DC (TCP303, DC–15 MHz)
• Minimum Measurable Current: 1 mA at ±3% accuracy (DC, scope set to 1 mV/div, 20 MHz bandwidth limited)
• Maximum Bare Wire Voltage: 600 VRMS CAT I & II; 300 VRMS CAT III (insulated wires only)
• Input Coupling: AC/DC
• Insertion Impedance: Low
• Power Requirements: 90–264 VAC, 47–440 Hz, 50 W maximum CAT II
• Operating Temperature: 0 °C to +50 °C
• Non-operating Temperature: -40 °C to +75 °C
• Operating Humidity: 5% to 95% R.H. (to +30 °C)
– Key Features
• Split-core construction for easy non-invasive connection
• Low DC drift and noise for improved precision at low currents
• Automatic scaling and unit display eliminates manual calculation errors
• Status indicators monitor degauss, probe open, overload, termination, and probe compatibility
• Probe cable options: 1.5 m, 2 m, or 8 m lengths
– Compatibility & Integration
Requires Tektronix TCP303, TCP305A, or TCP312A probes. Compatible with oscilloscopes featuring TEKPROBE Level II, TekConnect (with TCA-BNC adapter), or TekVPI (with TPA-BNC adapter) interfaces. Operates with non-TEKPROBE systems by multiplying measured output voltage by the amplifier’s range setting.
– Physical Specifications
• Amplifier Dimensions: 17.3 cm (L) × 16.7 cm (W) × 9.14 cm (H)
• Weight: 1.14 kg
