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The DC 503A Universal Counter/Timer is designed to operate in a TM 500-series power module. The instrument has two input channels, CH A and CH B, each with 125 MHz capability. Each channel has separate triggering level, triggering slope, attenuator, and coupling mode controls.
The DC 503A has eight measurement functions: FREQUENCY A, PERIOD B, WIDTH B, TIME A - B, RATlO A/B, EVENTS A DURING B, TOTALIZE A, and TIME MANUAL. All of the modes except FREQUENCY A, TOTALIZE A, and TIME MANUAL have the capability of averaging the selected measurement over a range of 1 to 10* times the input signal. The signals to be counted or measured can be applied via front panel bnc connectors or through the rear
Interface.Option included:
Option 01 - Replaces the standard 10 MHz oscillator with a self contained, proportional temperature controlled oven oscillator or increased accuracy and stability. Information relative to Option 01 can be found on schematic , and in the Specificaton, Calibration, and Theory of Operation sections.
Tektronix DC503