Teledyne LeCroy HVFO103 High Voltage Fiber Optically-Isolated Probe, 60MHz

The Teledyne LeCroy HVFO103 is a 60 MHz fiber-optically isolated high-voltage probe engineered for precise measurement of low-voltage signals in high-voltage environments. Optical isolation eliminates the need for floating oscilloscope techniques or specialized isolated acquisition systems, delivering superior noise immunity and signal fidelity. The probe’s three-wire tip design and dual-reference lead separate signal return currents from common-mode currents, achieving 140 dB CMRR and minimizing DUT loading. Its architecture integrates a low-noise electrical amplifier with frequency-modulated optical transmission via a single laser and fiber optic cable. The HVFO103 is designed for power electronics, automotive testing, and EMC/EMI compliance applications, and connects to Teledyne LeCroy oscilloscopes equipped with the ProBus interface.

– Technical Specifications

• Bandwidth: 60 MHz (typical, with tip attached)
• Rise Time: 7.5 ns (10-90%)
• Common-Mode Voltage Rating: ±35 kV (DC + peak AC)
• Maximum Input Voltage to Earth: ±35 kV (DC + peak AC)
• Common-Mode Rejection Ratio: 140 dB
• Signal Voltage Measurement Range: ±1V to ±40V (DC + peak AC) with selectable tips
– 1X tip: ±1V
– 5X tip: ±5V
– 10X tip: ±20V
– 20X tip: ±40V
• Input Impedance: High impedance
• DUT Loading: Very small, reduced compared to conventional HV differential probes
• Loop Inductance: Low

– Key Features

• Fiber optic isolation with integrated low-noise amplifier
• Frequency-modulated optical transmission for signal and data communication
• Subcarrier tip identification for automatic attenuation and voltage scaling
• Three-wire tip and dual-reference lead architecture for enhanced CMRR
• Battery-powered transmitter with USB Micro-B charging
• Compact design suitable for tight-space applications

– Typical Applications

• Power electronics measurements
• Automotive high-voltage system testing
• EMC/EMI compliance testing

– Compatibility & Integration

• ProBus interface for Teledyne LeCroy oscilloscopes
• Not compatible with WaveSurfer Xs oscilloscopes
• Firmware updates may be required for certain tip compatibility (e.g., 10X tip)
• Standard accessories include soft carrying case, transmitter, receiver, 1-meter fiber optic cable, three micro-grippers, USB charging cable, and operator’s manual
• Attenuating tips (5X, 10X, 20X) sold separately as accessories