The Tektronix 2455B is a four-channel, 250 MHz analog oscilloscope engineered for signal analysis across laboratory and field environments. This benchtop instrument delivers precise vertical and horizontal measurements with a 13 cm color CRT display, supporting complex waveform capture and characterization tasks. The 2455B accommodates flexible input configurations, comprehensive triggering capabilities, and optional interface expansion for enhanced measurement automation and specialized signal types.
Technical Specifications
Bandwidth & Channels
• Bandwidth: 250 MHz
• Channels: 4
Vertical System
• Vertical sensitivity: 2 mV/div to 5 V/div
• Vertical deflection accuracy: 2%
• Input coupling: AC, DC, GND
• Input impedance: 1 MΩ or 50 Ω (channels 1–2)
• Maximum input voltage: 400 V DC + Peak AC (1 MΩ); 5 Vrms (50 Ω)
• Channels 1–2 (with standard 10X probes): 20 mV to 50 V/division
• Channels 3–4 (with standard 10X probes): 1 V or 5 V/division
Horizontal System
• Main time base: 10 ns/div to 500 ms/div
• B sweep time base: 10 ns/div to 50 ms/div
• Time base magnification: ×10
• Time base accuracy: 0.7%
• Sweep speeds: 1.5 s to 1 ns per division
Trigger System
• Trigger sources: Internal, External
• Trigger sensitivity: 0.35 mV
• Trigger bandwidth: DC to 500 MHz
Display
• Type: Color CRT, 13 cm
• Trace writing speed: 2 div/s
Power
• Maximum power consumption: 180 VA
• Operating frequency: 48–440 Hz
– Key Features
• High-brightness color CRT with 13 cm display for clear signal visibility
• Dual time base architecture: main and B sweep with independent control
• Input impedance selection (1 MΩ or 50 Ω) on channels 1 and 2
• AC/DC coupling flexibility at 1 MΩ input
• GPIB interface for remote control and digital readout access
– Typical Applications
• Digital and analog circuit characterization
• Signal integrity analysis in high-speed systems
• Video and television signal triggering (with TV enhancement option)
• Word recognition triggering in digital systems (with word recognizer option)
• General-purpose bench measurements with optional DMM capability
– Compatibility & Integration
GPIB connectivity enables full instrument control and measurement data readout. Optional modules expand measurement capability: Counter/Timer/Trigger (CTT) for advanced digital triggering, Word Recognizer (WR) for pattern-based synchronization, Television/Video (TV) enhancement for frame-specific triggering, and Digital Multimeter (DMM) for DC/AC voltage, current, resistance, and temperature measurement with floating inputs. Benchtop form factor, 20 lbs, 20 × 18 × 12 in.
