Tektronix TR503 Tracking Generator Plug-in for the TM500 System, 0.1 to 1800 MHz

Tektronix SC 502 Oscilloscope Plug-In Module SC502 MPN Test Equipment

Tektronix DC 503 Universal Counter Test Equipment Plug-In Module

TEKTRONIX TM 504

Tektronix DP501 Digital Prescaler Plug In Module for the TM500 System

Tektronix Oscilloscope Plugin Module SI-5010 Programmable Scanner

Tektronix DC 505A Universal Counter Timer Module 225MHz For TM500 Series TESTED

Tektronix TM500 Series Aux Storage Plug-In