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Cursor Function
The ADM-1000 has a cursor function which enables various calculations to be made
on displayed waveforms.
In waveform display mode, press ACQ (0) to stop the acquisition. Two small crosses
are displayed on the waveform, one of which is flashing. The meter can perform
various calculations based on the positions of the cursors including:
Delta t
Time Difference between the cursors. This can be used to
determine period, pulse width etc.
Delta P
Power difference between the cursors. This is used for
measuring pulse amplitudes or amplitude differences.
Using both Delta t and Delta P, the pulse risetime can be determined.
1/Delta t
This is used to measure frequency (PRF) in Hertz. The display
should be arranged so that preferably two pulses can be seen,
and the cursors should then be set to the same point on each of
the two adjacent pulses.
Average Power
The average power between the cursors is calculated. This can
be used to determine the average power in a certain period of
time, e.g. during a burst of pulses.
Pulse Energy
The energy within a single pulse, in Joules. The display is
arranged to show one pulse as large as possible, and the
cursors set one either side of the pulse. The energy in the pulse
is displayed.
Use the 5 button to select the cross to be moved, one of the crosses is flashing to
show which is selected. Use the left and right arrow buttons to move it. Press 5 to
select the other.
The calculated value is shown at the top of the display. To change the type of
calculation, press the green tick button to toggle through the available calculations.
