frequency counter is a tool which is often used in an embedded system or
frequency counter has three modes:
Frequency mode: determine the frequency of a repetitive signal i.e. a clock
square wave or other repetitive signal.
Period mode: determine the period of the above mentioned signals
Time mode: determine the time between two events, i.e. two edges of a signal or
The precision of the instrument depends on the “gate-time” of the instrument.
gate- time is the
time interval that is used to make a measurement.
FREQUENCY COUNTER must measure the frequency of a periodic signal.
FREQUENCY COUNTER must measure the period of a periodic signal.
FREQUENCY COUNTER can be operated with the MCP (Manual Control Panel)
FREQUENCY COUNTER shall display the measurement mode and the measurement on the
FREQUENCY COUNTER will cycle through the measurement modes when the user
FREQUENCY COUNTER shall change the gate-time of a measurement due to user input
FREQUENCY COUNTER is user operable during a measurement and is responsive to
code is free of memory leaks
measured frequency shall deviate at most 2 percent from the reference. As a
an oscilloscope’s internal frequency counter function will be used.
FREQUENCY COUNTER shall operate with a high precision repetitive gate-time
between 0.1 and 10
the FREQUENCY COUNTER does not respond to user input or measurements, the FREQUENCY
COUNTER shall reboot and
its previous operating mode.
COUNTER shall operate with non-periodic signals limited to a single pulse.
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