Teledyne LeCroy ZD1500 Differential Probe

The Teledyne LeCroy ZD1500 is an active differential probe engineered for high-speed digital signal integrity measurements. Operating at 1.5 GHz warranted bandwidth with 1.7 GHz typical performance, the probe delivers 270 ps rise time (10–90%) and minimal input capacitance below 1.0 pF differential. ProBus integration with compatible LeCroy oscilloscopes enables direct gain and offset control from the instrument front panel, eliminating external power supply requirements.

The probe achieves exceptional common-mode rejection - 60 dB at 50/60 Hz and 25 dB at 1500 MHz - with typical system noise of 1.75 mVrms and noise density of 38 nV/√Hz. Its low input resistance in differential mode (120 kΩ) and high common-mode input impedance (1 MΩ nominal) minimize circuit loading while preserving measurement fidelity across demanding test points. The ZD1500 handles differential input ranges to ±8 V (18 Vp-p), common-mode ranges to ±10 V, and withstands 30 V maximum non-destructive input voltage.

Compact probe head design and included accessory kit support measurements in confined spaces and complex signal routing scenarios.

Technical Specifications

• Bandwidth: 1.5 GHz (warranted), 1.7 GHz (typical)


• Rise Time: 270 ps (10–90%), 200 ps (20–80%)


• Input Capacitance: <1.0 pF differential; 2 pF per side


• Input Impedance: 120 kΩ differential; 1 MΩ common-mode (nominal)


• Differential Input Range: ±8 V (18 Vp-p)


• Common-Mode Range: ±10 V


• Maximum Non-destructive Voltage: 30 V


• System Noise: 1.75 mVrms (typical)


• Noise Density: 38 nV/√Hz


• CMRR: 60 dB @ 50/60 Hz; 25 dB @ 1500 MHz


• Zero Offset: 5 mV typical (within 15 minutes post auto-zero)


• Attenuation: 1:1 and 10:1

Key Features

• ProBus interface for direct oscilloscope control


• No external power supply required with compatible instruments


• Low input capacitance and high input resistance minimize loading


• Excellent common-mode rejection across the frequency spectrum


• Small, low-mass probe head for confined test point access

Compatibility & Integration The ZD1500 integrates with Teledyne LeCroy WaveSurfer, WaveRunner, WavePro, and WaveMaster series platforms running MAUI firmware 6.4.1.x or later, including WaveSurfer 3000z/4000HD and WaveRunner 9000 models.