The Tektronix DC 504A is a
multi-function counter/timer designed to operate in one compartment of any TM
500 or TM 5000-Series power module.
Frequency measurements to 100 MHz are within the
capability of the DC 504A. Frequencies above 10 MHz are internally prescaled.
Measurement of pulse widths and periods at rates up to 2.5 MHz is possible.
Width and Period averaging of up to 100 events is possible, An autorange
feature allows the counter to automatically select the gate time (up to one
second) or number of averages (up to 100). A x100 phase-locked loop multiplier
automatically increases display resolution by a factor of 100 in the 10 Hz to
25 kHz frequency range. The 10 MHz internal time base provides a single-shot
resolution of 100 ns. Input signals can be ac or dc coupled and attenuated by a
factor of five. All measurement results are displayed in a six digit LED
readout.
