The Tektronix 2235 AN/USM488 is a 100 MHz dual-channel analog oscilloscope engineered for portable field service, electronics design, and general-purpose signal analysis. Designated AN/USM-488 for military applications, this instrument delivers reliable waveform examination and precision timing measurements in demanding technical environments. Its straightforward operator interface and compact form factor enable rapid deployment across multiple measurement scenarios.
Technical Specifications
Bandwidth & Speed
• 100 MHz bandwidth (-3 dB) at 5 mV/Div and above
• 90 MHz at 2 mV/Div
• Bandwidth limit: 20 MHz ±10%
• Rise time: 3.5 ns or less (5 mV/Div to 5 V/Div); 3.9 ns or less at 2 mV/Div
• Fastest sweep speed: 5 ns/Div (with 10X magnifier)
Vertical System
• Dual-channel configuration
• Deflection range: 2 mV/Div to 5 V/Div
• Accuracy: ±2% (+15°C to +35°C); ±3% outside operating range
• Continuously variable sensitivity between calibrated steps by 2.5:1
• Input impedance: 1 MΩ // 20 pF
Time Base
• A time base: 50 ns/Div to 500 ms/Div
• B time base: 50 ns/Div to 50 ms/Div
• Timing accuracy: ±2% (unmagnified); ±3% (magnified)
• Sweep linearity: ±5% over any two center 8 divisions
• Delay range: 10 divisions, continuously variable
• Differential delay dial accuracy: ±1% (+15°C to +35°C); ±2% (0°C to +50°C)
Display & Trigger
• CRT: 80 × 100 mm² display area, P31 phosphor, 14 kV acceleration
• Trigger sensitivity: 0.3 Div (35 mV) to 10 MHz; 1 Div (120 mV) to 60 MHz; 1.5 Div (200 mV) to 100 MHz
• TV line trigger: 0.3 div
• HF reject filter (AN/USM-488)
– Key Features
• Dual-trace delayed sweep for detailed timing analysis
• X-Y mode operation
• Z-axis modulation input
• Single sweep and algebraic addition modes
• Trigger view display
• Field-proven design for service and maintenance applications
– Electrical Characteristics
• Input voltage: 90–250 VAC
• Frequency: 48–440 Hz
• Power consumption: 40 W, 70 VA
• DC operation available with Option 07 (10–30 V dc)
– Typical Applications
Field service diagnostics, circuit design verification, signal integrity testing, and general electronics troubleshooting in laboratory and field environments.
