The Tektronix 7D20 is a two-channel digitizing plug-in for 7000-series scopes. It is a triple-width plug-in and provides both vertical and horizontal signals to the scope.

Bandwidth: 0–70 MHz (DC), 10 Hz–70 MHz (AC)
Rise time: < 5 ns
Sampling Rate: 40 MSa/s
Deflection: 5 mV/Div to 5 V/Div (1–2–5)
Input Impedance: 1 MΩ // 20 pF
Time Base:

• 50 ns/Div — 1 μs/Div: Equivalent Time Mode
• 2 μs/Div — 200 μs/Div: Extended Real Time Mode
• 500 μs/Div — 50 ms/Div: Real Time Mode
• 100 ms/Div — 20 s/Div and External: Roll Mode

External Clock: < 10 kHz
Memory: 2 × 455 cells (alternating) analog / 1024 words digital
Features:

• 2 channels
• 6 memory banks
• 2 cursors