The Tektronix 2225 is a portable, dual-channel analog oscilloscope delivering 50 MHz bandwidth for signal analysis and troubleshooting across diverse electronic applications. This instrument combines vertical deflection sensitivity from 5 mV/div to 5 V/div (±3% accuracy), horizontal sweep speeds from 0.5 s/div to 0.05 µs/div, and flexible triggering modes including TV line and field synchronization. The 8 cm × 10 cm CRT display produces a bright, sharply defined trace suitable for waveform capture and photography.
Technical Specifications
Vertical System (Dual Channel)
• Bandwidth: 50 MHz (-3 dB) with 7.0 ns rise time (5°C to 35°C); 40 MHz with 8.8 ns rise time (0°C to 40°C)
• Deflection Factor: 5 mV/div to 5 V/div (±3% accuracy); 500 µV/div to 5 V/div with X10 magnification (±5% accuracy)
• Input Impedance: 1 MΩ, 25 pF
• Maximum Input Voltage: 400 V (DC + peak AC), 800 V p-p
• Channel Isolation: 100:1 at 10 MHz
• CMRR: ≥10:1 at 20 MHz
• Operating Modes: CH 1, CH 2, CH 2 INVERT, ADD, ALT, CHOP, X10 magnification
• Independent bandwidth limiting available per channel
Horizontal System
• Sweep Speeds: 0.5 s/div to 0.05 µs/div
• Magnification: X5, X10, X50 MAG (minimum 5 ns/div)
• Accuracy: X1 ±3%; X5 & X10 ±4%; X50 ±5% (15°C to 35°C)
• Operating Modes: X1, ALT, MAG, X-Y
Trigger System
• Sensitivity (Internal): 0.3 div at 5 MHz, 1.0 div at 50 MHz
• Sensitivity (External): 40 mV at 5 MHz, 150 mV at 50 MHz
• Modes: Peak-Peak Auto (TV LINE), NORM, TV FIELD, SGL SWP
• Sources: VERT MODE, CH 1, CH 2, LINE, EXT, EXT/10
• Coupling: AC, DC, HF REJ (>30 kHz attenuation), LF REJ (<30 kHz attenuation)
• Variable Holdoff: ≥8:1
X-Y Operation
• X-Axis Bandwidth: 2 MHz
• Phase Difference: ±3° DC to 150 kHz
CRT Display
• 8 cm × 10 cm, 12.6 kV nominal
Internal Calibrator
• Output: 0.5 V ±5% into 1 MΩ load; 1 kHz ±20%
Power
• Line Voltage: 95–128 VAC (Low) or 185–250 VAC (High)
• Line Frequency: 48–440 Hz
• Maximum Consumption: 70 W (80 VA)
• DC Operation: Optional inverter (11.8–30 VDC); optional battery pack (≈3 hours runtime)
– Key Features
• Dual-channel architecture with independent gain and offset controls
• Magnification modes (X5, X10, X50) display normal and magnified traces simultaneously
• HF and LF reject trigger filtering for noise immunity
• Single-sweep function for transient capture
• Hands-free triggering with variable holdoff
• Selectable line voltage operation (Low/High range)
– Typical Applications
• Circuit troubleshooting and signal verification
• TV synchronization analysis
• Transient and intermittent fault capture
• Phase relationship measurement (X-Y mode)
• Field service and portable bench work
– Compatibility & Integration
AC-powered operation across 95–250 VAC; DC operation via optional inverter for mobile applications. External trigger input accepts 40–150 mV signals across the 5–50 MHz range.
