Tektronix TDS1000B Series Operator's Manual page 298

Appendix A
Training 1 Signal Board: Signal Definitions
Pins 1, 7, 8,
and 14
Description
Pin 2
Specification
Description
Pin 3
Specification
Description
A-4 TDS1000B and TDS2000B Series Oscilloscopes – Operator Training Kit
GND
These pins provide the ground reference for the
Training 1 signal board.
CLK 20MHz
20 MHz digital signal, 4 V peak-to-peak
This signal is the control clock for all of the digital
signals on the Training 1 signal board.
D 10MHz
10 MHz digital signal, 4 V peak-to-peak
This signal is a 10 MHz digital data signal.