The Tektronix P6156 is a passive voltage probe engineered for high-bandwidth oscilloscope measurements requiring signal fidelity and fast transient capture. Operating from DC to 3.5 GHz (DC to 1.5 GHz for 1X and 100X attenuation), the probe delivers fast rise time and low input capacitance to preserve signal integrity while minimizing distortion. Its passive design eliminates external power requirements and pairs directly with 50 Ω oscilloscope inputs without additional termination. Multiple attenuation options—1X, 10X, 20X, and 100X—accommodate measurement ranges from low-level signals to 500 V peak transients, with input resistance constant across frequency and maximum input voltage varying by attenuation setting. The 1.5 m cable integrates a BNC connector with Trace Identify button functionality, enabling direct control of compatible Tektronix oscilloscope functions and automatic digital readout. When used with 1 MΩ input oscilloscopes, external 50 Ω termination is required. The probe meets UL3111-1 ground-referenced safety requirements and operates within a 0.5 W power budget.
Technical Specifications
• Bandwidth: DC to 3.5 GHz (standard); DC to 1.5 GHz (1X and 100X options)
• Attenuation Options: 1X (Option 27), 10X (Standard), 20X (Option 26), 100X (Option 25)
• Input Resistance: Constant over frequency range; 1 kΩ (20X), 5 kΩ (100X)
• Input Capacitance: Low; varies with attenuation setting
• Maximum DC Input Voltage: 50 V RMS (100X option); varies by setting and system configuration
• Maximum Pulse Peak Voltage: 500 V (subject to RMS input limits)
• Rise Time: Fast (supports high-fidelity transient capture)
• Cable Length: 1.5 m (4.9 ft.)
• Power Rating: 0.5 W DC
– Key Features
• Low input capacitance minimizes signal loading and distortion
• Constant input impedance across wide frequency range
• Trace Identify button enables programmable oscilloscope integration (Tektronix 11000 Series compatible)
• BNC connector with digital readout information capability
• Compact probe head design
• Compatible with 3.5 mm probe accessories and sampling system adapters
– Compatibility & Integration
• Direct connection to 50 Ω oscilloscope inputs (no external termination required)
• Requires external 50 Ω termination (Tektronix part 011-0049-01) when used with 1 MΩ input oscilloscopes
• UL3111-1 compliant for ground-referenced measurement applications
