DC509

The Tektronix DC509 is a 135 MHz programmable frequency counter plug-in for the TM500 system.

Tektronix DC509
135 MHz programmable frequency counter Tektronix DC509 Produced from 1981 to (?) Manuals Tektronix DC509 Manual (PDF) Modifications 040-0957-03 (1983): Conversion of DC509 to DC5009 (All manuals in PDF format unless noted otherwise)

It is internally similar to the DC5009 to which it could be converted through an upgrade kit.

Key Specifications