The Tektronix P80318 is an 18 GHz differential Time Domain Reflectometry (TDR) probe for high-fidelity impedance characterization of differential transmission lines. It delivers 100 OHM differential impedance with 50 OHM odd mode input impedance, enabling direct in-circuit testing of fully balanced differential signals without ground contact. The probe’s adjustable pitch spans 0.5 mm to 4.2 mm, accommodating diverse differential line spacings and impedances. With a reflected TDR fall time of 20 GHz
• Probe Propagation Delay: 1.0 ns typical
• Probe Delay (SMA to tip): 1 ns typical
• Reflected TDR Fall Time: <39 ps
• TDR Control Activation Force: 150–200 grams per probe half
• Maximum Input Voltage: 5.0 V
• Connector Type: SMA
– Key Features
• Fully differential probing without ground contact requirement
• Double-cushioning contact design for repeatable DUT engagement
• Adjustable pitch accommodates 0.5 mm to 4.2 mm line spacings
• Two one-meter SMA cables with parallel control lines included
• Operates from −15 °C to +55 °C ambient
• Compact form factor: 127.0 mm × 33.0 mm × 28.0 mm; 0.075 kg
– Compatibility & Integration
• Compatible with DSA8200, TDS/CSA8200, TDS/CSA8000B, and TDS/CSA8000 sampling oscilloscopes
• Requires two Tektronix 80A02 EOS/ESD Protection Modules for sensitive sampling module protection
• Includes adjustment tool, ground wires (one installed, two spares), protective cap, cable straps, and soft storage case
