Tektronix DC 505A Universal Counter/Timer Plug-in

Tektronix TM500 Series Aux Storage Plug-In

Tektronix 7D15 225 MHz Universal Counter/Timer - 7000 Series Module

Tektronix DC 509 Universal Counter/Timer

TEKTRONIX SG503 / SG 503 250 MHz SINEWAVE GENERATOR for TM500 SERIES, AS-IS

Tektronix PG501 50Mhz Pulse generator. Guaranteed

Tektronix TM506 Rackmount 6-Slot Modular Test and Measurement Mainframe

Tektronix TM506 Chassis Mainframe Module for TM500 Test Measurement System