The Tektronix 2445B is a four-channel, 150 MHz analog oscilloscope built for professional electronics troubleshooting, design, and testing. Its high writing speed CRT renders fast, single-shot events with clarity while comprehensive trigger modes ensure stable acquisition of complex waveforms. The instrument delivers vertical sensitivity from 2 mV/div to 5 V/div across all four channels, with time base sweep speeds down to 50 ns/div for detailed signal characterization. Delayed sweep capability and pre-trigger view enable deeper circuit analysis. Multiple trigger sources—CH1 through CH4, line, and external—combined with five coupling modes and variable holdoff provide the flexibility needed in demanding technical environments.
Technical Specifications
Vertical System
• Four independent channels
• Sensitivity: 2 mV/div to 5 V/div
• Deflection factor accuracy: ±3%
• Input coupling: AC, DC, GND
• Input impedance: 1 MΩ ±2% (nominally 20 pF)
• Maximum input voltage: 400 V (p-p) CATII with 10X probe
Horizontal System
• Time base range: 50 ns/div to 0.5 s/div
• Time base accuracy: ±3%
• Delayed sweep: Yes
Trigger System
• Modes: Auto, Normal, Single Sequence
• Sources: CH1, CH2, CH3, CH4, Line, Ext
• Coupling: AC, DC, LF Reject, HF Reject, Noise Reject
• Trigger level accuracy: ±0.5 div (typical)
• Pre-trigger view: Yes
• Variable holdoff: Yes
Measurement Capabilities
• Automatic measurements: Voltage, Time, Frequency
• Cursor measurements: Voltage and time differences
– Key Features
• High writing speed CRT for single-shot event capture
• Four fully independent channels with 1 MΩ input impedance
• Probe compensation output for field calibration
• External trigger input for synchronization with external signals
– Typical Applications
Design verification and validation, field service troubleshooting, production test, and development of analog and mixed-signal circuits up to 150 MHz.
– Compatibility & Integration
Designed for use with standard Tektronix passive and active probes. Third-party probe compatibility should be verified before deployment.
