This unit is for parts or repair - The unit does not power up. There is an electrical issue. Otherwise, chassis, screen and controls are in good condition. No physical damage observed. Minor aesthetic issues (see pictures)
From Google AI
If made operational, theTektronix TDS 684C is a 4-channel digital real-time oscilloscope featuring a 1 GHz bandwidth and a 5 GS/s sample rate across all channels simultaneously. Released in the late 1990s, it is designed for high-speed digital design characterization, including capturing glitches and setup/hold violations.
Core Performance- Channels: 4 analog channels.
- Bandwidth: 1 GHz (standard at 10 mV/div and above); reduced at lower sensitivities (750 MHz at 5 mV/div, 600 MHz at 2 mV/div, 500 MHz at 1 mV/div).
- Sample Rate: 5 GS/s on each channel simultaneously.
- Vertical Resolution: 8-bit, increasing to >11-bit with averaging.
- Record Length: 500 to 15,000 points per channel.
Vertical System- Sensitivity: 1 mV/div to 10 V/div.
- DC Gain Accuracy: ±1.5%.
- Input Impedance: Selectable between 1 MΩ (in parallel with 10 pF) or 50 Ω.
- Input Coupling: AC, DC, or GND.
- Maximum Input Voltage: 300 V CAT II; ±400 V peak (at 1 MΩ); derated above 1 MHz