Tektronix DC505A Universal Counter/Timer
This Plug-in is a used Frequency Counter Plug-In that is designed to operate in a TM 500 Series Power Module.
This unit has seven measurement functions, such as frequency counting, finding frequency ratios, period timing, interval timing, width timing, electronic event counting, and manual event counting.
This unit has two input channels (A&B), each have BNC inputs and separate triggering levels, attenuators, and coupling mode controls, and 225MHz capability.
Provides 7-digit LED display.