Gentec-EO MACH 6 - Manual (Page 27)

Mach 6 User’s Manual Revision 2.1 27
Places a cursor on the minimum value and its time stamp on the strip chart.
Place Cursor on Max
Places a cursor on the maximum value and its time stamp on the strip chart.
Place Cursors on Standard Deviation
Places cursors on the Standard Deviation, plus and minus, from the mean on the strip
chart
Missing Pulse Time Stamps
With internal triggering, if the pulse is below the trigger level, no trigger will occur, but
the period timer will still be running. This means that the period will be longer between
the pulses adjacent to the missing pulses. The applications software examines the pulse
data for this condition and records the time stamps where the period is discontinuous.
From the continuous period data, the true period can be found and used to count how
many pulses were missing in the discontinuities.
Frequency
The measured average frequency of the data set. Each pulse has a time stamp. The
number of pulses, divided by the sum of all time stamps is the average frequency.
Number of Pulses
The number of pulses in the data set.
Missing Pulses
The number of missing pulses in the data set. A missing pulse is defined to be a pulse
with energy less than the user set threshold level. This feature works with both internal
and external triggering. The method of finding missing pulses is different depending on
why the pulse is missed.
With external triggering, if a trigger event occurs a measurement will be taken even if no
pulse or a runt pulse is present. This will cause a missing trigger to be recorded.
With internal triggering, if the pulse is below the trigger level, no trigger will occur, but
the period timer will still be running. This means that the period will be longer between
the pulses adjacent to the missing pulses. The applications software examines the pulse
data for this condition and records the time stamps where the period is discontinuous.
From the continuous period data, the true period can be found and used to count how
many pulses were missing in the discontinuities.