The Probe Master 4905-2RA is a passive oscilloscope probe engineered for precision signal acquisition across electronics testing and measurement applications. Built on the proven 4900 Series platform, it features gold-plated contacts and a readout actuator option for direct measurement display on compatible oscilloscope screens. The 10X attenuation ratio and low capacitive loading deliver minimal circuit loading while maintaining signal integrity across moderate-bandwidth circuits.
Technical Specifications
• Bandwidth: 250 MHz
• Attenuation Ratio: 10X
• Input Impedance: 10 MΩ
• Input Capacitance: 12–14 pF
• Compensation Range: 10 pF to 50 pF
• Maximum Input Voltage: 600 V DC
• Cable Length: 5 ft (1.5 m) or 6.6 ft (2 m)
– Key Features
• Gold-plated probe tips, sprung hook, and alligator clips for reliable electrical contact
• Interchangeable probe tips (.030″ and .055″ diameters) adapt to different test points
• Readout Actuator (RA) option enables direct oscilloscope display integration
• Includes IC test tip, ground lead (6″), tip insulator, and trimmer compensation tool
• Optional storage pouch or case for field portability
– Typical Applications
Suitable for analog circuit debug, signal integrity verification, and component-level troubleshooting in development and service environments where 250 MHz bandwidth and moderate attenuation meet measurement needs.
– Compatibility & Integration
Designed for Tektronix and Hewlett Packard oscilloscopes, including Tektronix 465, 475, 2200, 2300, 2400, 5000, 7000, and 11000 series instruments equipped with readout actuator connectors.


















