The Yokogawa 701918 is a high-performance current probe engineered for AC and DC current measurement across DC to 120 MHz. With a maximum continuous rating of 5 ARMS and measurable current range from 1 mA to 5 A, it delivers ±1% amplitude accuracy (DC or 45–66 Hz) with typical noise of 60 μArms. The probe’s 2.9 ns rise time and 10 ns propagation delay enable precise characterization of fast transients in power electronics, motor drives, automotive systems, and low-voltage device testing. Its compact sensor head accommodates conductors up to 5 mm diameter in confined spaces, while zero-adjustment and demagnetization features streamline setup. The probe outputs 1 V/A with direct compatibility to Yokogawa DL/DLM oscilloscopes, ScopeCorders, and waveform instruments via BNC connector, powered through the instrument terminal or external 701934 supply at ±12 V.
Technical Specifications
• Bandwidth: DC to 120 MHz (−3 dB)
• Rise Time: 2.9 ns or less
• Propagation Delay: 10 ns typical
• Maximum Continuous Input: 5 ARMS
• Maximum Peak Current: 7.5 Apeak (non-continuous)
• Measurable Current Range: 1 mA to 5 A
• Output Sensitivity: 1 V/A
• Amplitude Accuracy: ±1% of reading ±1 mV typical (DC/45–66 Hz, 0–5 ARMS); ±3.0% of reading ±1 mV (ac, 100 kHz–120 MHz)
• Noise: 60 μArms typical, 75 μArms maximum (30 MHz bandwidth instrument)
• Temperature Coefficient: Within ±2% of reading (50 Hz, 5 ARMS, post-auto-zero, 23±5°C)
• External Magnetic Field Effect: 20 mA or less
• Maximum Rated Power: 3.2 VA
– Key Features
• Dual-axis clamp accommodates conductors up to 5 mm diameter
• Low-noise design (60 μArms typical) for precision low-current measurement
• Auto-zero adjustment and demagnetization for simplified operation
• Compact sensor head (155 × 18 × 26 mm) enables access in tight assemblies
• Sensor cable: 1.5 m; Power cable: 1.0 m
• Weight: Approximately 250 g
– Typical Applications
• LED driver verification and characterization
• Power supply efficiency and performance evaluation
• Low-voltage device power consumption measurement (FPGAs, SoCs)
• High-speed current transient analysis in switching circuits
• Motor drive and automotive power electronics testing
– Compatibility & Integration
• Compatible with Yokogawa DL/DLM Series digital oscilloscopes
• Compatible with ScopeCorders and waveform measuring instruments
• BNC connector with integrated power plug for direct instrument connection
• Operates with external Yokogawa 701934 Probe Power Supply (±12 V, 2.5 A per rail)
• Rated supply voltage: ±12 V ±0.5 V
