The Tektronix TDS640 is a 500 MHz, 2 GS/s quad-channel digital storage scope.

Tektronix TDS640
500 MHz, 2 GS/s, 4-Ch digital scope
Tektronix TDS640A

Produced from 1993 to (?)

Manuals

TDS640


TDS640A

Schematics

Common

(All manuals in PDF format unless noted otherwise)

It has Tekprobe BNC connectors on all input channels.

The dual-channel version is the TDS620.

Key Specifications

Bandwidth 500 MHz
Sampling rate 2 GS/s on all 4 channels
Time base 500 ps/Div to 5 s/Div
Deflection 1 mV/Div to 10 V/Div
Resolution 8 bits
Record length 500 to 2000 points
Input impedance 1 MΩ // 10 pF, or 50 Ω
Interface GPIB standard
Options
  • Centronics interface
  • RS-232 interface
  • FFT, integration and differentiation

Software


Repair issues

A common failure reason on early TDS-family scopes are surface-mounted capacitors leaking corrosive electrolyte.

Pictures of TDS640

Pictures of TDS640A