LeCroy DXC100A Passive Differential Probe Pair, 250MHz

The LeCroy DXC100A is a passive differential probe pair delivering 250 MHz bandwidth for precision signal acquisition across a wide range of measurement scenarios. Selectable 10x and 100x attenuation factors adapt to different signal levels, while matched probe construction ensures accurate differential measurements. The probe pair integrates with Teledyne LeCroy DA1800 series differential amplifiers - including DA1855A and DA1822 - where automatic attenuation factor incorporation streamlines oscilloscope display and measurement workflows.

When paired with DA1855A, system bandwidth reaches 100 MHz with 3.5 ns rise time; DA1822 pairing yields 10 MHz bandwidth and 35 ns rise time. The DXC100A also operates standalone with any oscilloscope or plug-in unit offering 1 MΩ ±1% input impedance and 15–26 pF compensation range across 1-inch connector spacing.

Technical Specifications

• Probe Bandwidth: 250 MHz (-3 dB)


• System Bandwidth (DA1855A): 100 MHz (-3 dB)


• System Bandwidth (DA1822): 10 MHz (-3 dB)


• System Rise Time (DA1855A): 3.5 ns


• System Rise Time (DA1822): 35 ns


• Attenuation Factor: Selectable 10x or 100x


• Input Resistance: 1 MΩ ±1%


• Input Capacitance: 10.5 pF ±0.5 pF


• Compensation Range: 15 to 26 pF


• Maximum Input Voltage (non-destructive): 500 VDC + peak AC


• Cable Length: 1.2 m

Key Features

• Matched passive differential probe pair for common-mode rejection optimization


• Shared compensation box enables simultaneous attenuation switching and transient response tuning


• Selectable attenuation accommodates diverse signal amplitudes without reranging


• Compatible three-probe ground connection methods minimize ground loop currents at frequencies ≤ 1 MHz


• 1% input resistance specification supports CMRR performance when paired with differential amplifiers

Typical Applications

• High-frequency differential signal measurement in analog and digital circuits


• Power electronics and switching transient analysis


• Common-mode rejection verification in instrumentation systems

Compatibility & Integration Designed for Teledyne LeCroy DA1800 series differential amplifiers. Operates with any oscilloscope or plug-in featuring 1 MΩ/15–26 pF input impedance and 1-inch connector spacing. Operating temperature range: 0° to 50° C.