The Tektronix 2465B is a four-channel, 400 MHz portable analog oscilloscope engineered for high-performance signal analysis in laboratory and field environments. It delivers real-time waveform capture with instantaneous response to dynamic signal conditions, leveraging analog circuitry for high-speed trigger rates. The instrument combines dual-range vertical sensitivity, variable time-base controls, and flexible input impedance selection to accommodate diverse measurement requirements across analog signal characterization.
Technical Specifications
Bandwidth & Vertical Performance
• Bandwidth: 400 MHz
• Channels: 4
• Vertical Sensitivity (CH 1 & 2): 2 mV/div to 5 V/div
• Vertical Sensitivity (CH 3 & 4): 100 mV/div, 500 mV/div
• Vertical Sensitivity Accuracy: ±2%
• With 10X probes — CH 1 & 2: 20 mV to 50 V/division; CH 3 & 4: 1 V or 5 V/division
Time Base & Sweep
• A Sweep Rate: 5 ns/div to 500 ms/div
• B Sweep Rate: 50 ms/div to 5 ns/div
• Maximum Resolution: 500 ps/div (with X10 magnification)
• Timing Accuracy: 1%
• Time Interval Resolution: 20 ps
• Continuous Variable Timing: extends slowest A Sweep to 1.5 s/div
Input Characteristics
• Input Impedance: Switchable 1 MΩ ±5% (15 pF ±2 pF) or 50 Ω nominal
• Input Coupling (1 MΩ): AC, DC, GND
• Maximum Input Voltage (1 MΩ): 400 V DC + peak AC
• Maximum Input Voltage (50 Ω): 5 Vrms average for 1 sec, ±50 V peak
Trigger System
• Trigger Sources: CH 1 or CH 2
• Coupling Options: DC, AC, Noise Reject, HF Reject, LF Reject
• Trigger Sensitivity (DC coupled, to 50 MHz): 0.35 div
• Trigger Sensitivity (Noise Reject, to 50 MHz): ≤1.2 div
• Trigger Sensitivity (HF Reject, DC to 30 kHz): 0.5 div
• Trigger Sensitivity (LF Reject, 80 kHz): 0.5 div
• Trigger Sensitivity (AC coupled, 60 Hz): 0.35 div
• Above 50 MHz sensitivity increases to 1.5 div (DC, LF reject, AC)
• Level Control (CH 1 & 2): ±18 × V/div setting
• Level Control (CH 3 & 4): ±9 × V/div setting
• Trigger Modes: Auto level, HF Reject, LF Reject, Noise Reject, TV sync
– Key Features
• Auto setup and automatic measurements
• Front-panel setup storage and recall
• Cursor measurement capability for precision analysis
• Switchable input impedance for 1 MΩ and 50 Ω applications
• 100% factory tested
– Typical Applications
• General-purpose analog signal characterization
• Time-domain waveform analysis
• DC and AC signal measurement
• Bandwidth-limited circuit testing up to 400 MHz
