Discover the reliability and clarity of traditional analog oscilloscopes with the MOS Series.
This lineup offers bandwidth options from 20MHz up to 100MHz, dual-channel display, stable triggering, bright CRT visibility, and optional built-in frequency counter (CF models). Ideal for laboratories, education, electronics repair, and hobby applications, the MOS Series provides smooth waveform rendering, fast response, and a durable mechanical structure designed for long-term use.

Model Differences 

Standard Models

CF Series (With Frequency Counter)

Optimized Feature Description

Key Features

• Dual-channel, dual-trace analog CRT display
• Bandwidth options: 20MHz / 40MHz / 50MHz / 100MHz
• Bright 6-inch CRT with internal graticule (P31 phosphor)
• X-Y mode, TV sync, and ALT trigger for unrelated signals
• 10× sweep magnification for detailed waveform inspection
• NEC coded rotary switch, sealed attenuator, durable mechanical design
• Stable trigger system: AC / TV-V / TV-H / External
• Lightweight and reliable for education, repair, and lab use
• CF models include a built-in frequency counter

Technical Specifications

Vertical System

• Sensitivity: 5mV–5V/DIV, 1-2-5 steps
• Bandwidth (model-dependent):
  • 20MHz / 40MHz / 50MHz / 100MHz
• Rise time (typical):
  • 20MHz: ~17.5ns
  • 40MHz: ~8.75ns
• Coupling: AC / GND / DC
• Input impedance: 1MΩ / 25pF
• Max input voltage:
  • 1:1 probe → 40Vpp
  • 10:1 probe → 400Vpp

Horizontal System

• Sweep time: 0.2µs–0.5s/DIV (20 steps)
• Sweep magnification: 10×
• Sweep accuracy: ±3% (×10MAG ±5%)

X-Y Mode

• Bandwidth: DC–500kHz
• Phase difference: ≤ 3°

Trigger System

• Sources: CH1 / CH2 / LINE / EXT
• Modes: AUTO / NORM / TV-V / TV-H
• Sensitivity:
  • 20Hz–2MHz: 0.5DIV
  • 2MHz–20/40MHz: 1.5DIV
• External input impedance: 1MΩ / 25pF

Z-Axis Input

• Sensitivity: 5Vp-p
• Bandwidth: DC–2MHz

CRT Display

• 6-inch CRT with internal graticule
• Effective area: 8 × 10 DIV
• Phosphor type: P31