Specify period between timer events
TimerPeriod specifies the time, in seconds,
that must pass before the callback function specified for
called. Time is measured relative to when the object is connected
to the instrument with
Some timer events might not be processed if your system is significantly
slowed or if the
TimerPeriod value is too small.
Any instrument object
The default value is 1 second. The minimum value is 0.01 second.