Keysight (Agilent) N2818A

The Keysight N2818A is a differential probe engineered for precision measurement of high-speed digital signals and modern power electronics. It connects directly to oscilloscopes with the Keysight AutoProbe interface, drawing power from the instrument without external supplies. The probe delivers 200 MHz bandwidth with 1.75 ns rise time and 10:1 attenuation, making it suitable for signal integrity analysis, differential characterization, and vehicle bus testing across a wide dynamic range.

– Technical Specifications

Signal Characteristics
• Bandwidth: 200 MHz
• Rise time (10%–90%): 1.75 ns
• Attenuation: 10:1
• Input resistance: 1 MΩ
• Input capacitance: 3.5 pF

Voltage Ratings
• Maximum differential input: ±20 V
• Maximum common mode input: ±60 V

Physical
• Cable length: 70 cm
• Housing dimensions: 4.4 × 0.9 × 0.6 inches
• Operating temperature: −10 to +40 °C

– Key Features

• Direct AutoProbe interface connection eliminates external power supplies
• High input impedance (1 MΩ) minimizes loading on test circuits
• Low input capacitance (3.5 pF) preserves signal fidelity
• Wide common mode range (±60 V) accommodates floating and biased differential measurements
• Includes hook tip clips, alligator clips, and offset adjustment screwdriver for field configuration

– Typical Applications

• High-speed digital signal integrity verification
• Differential bus analysis in automotive and industrial systems
• Power electronics characterization
• Low-impedance signal measurement in presence of high common mode voltages

– Compatibility & Integration

The N2818A integrates with InfiniiVision 3000 X, 4000 X, 6000 X, and Infiniium 9000A/H, S-Series, 90000A, 90000X/Q/Z Series oscilloscopes equipped with 50 Ω AutoProbe inputs. For oscilloscopes without AutoProbe capability, use the N2792A adapter. Extended temperature operation from −40 to +85 °C is achievable with the N7013A extreme temperature kit, though bandwidth derate to 70 MHz applies.