Anritsu Spectrum Master MS2720T, User Manual

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EMF (Option 444) 9-3 EMF Menu
Spectrum Analyzer MG PN: 10580-00349 Rev. H 9-3
EMF Auto Menu
Key Sequence:
Shift > Measure
(
4
) key
> Power and Bandwidth > EMF Measurement >
Automated Measurements
Measurement On/Off: Starts the EMF Measurement. The Dwell Time,
Measurement Time, and other related parameters must be set before starting
the measurement. This button is useful for stopping or restarting
measurements when settings need to be changed. When the measurement is
in progress, access to other menus and key presses are blocked. The
Measurement On/Off key is then the only key that can be accessed.
Measurement/Setup save is not permitted when EMF Automated
Measurement is turned On. At the end of the measurement, the button will
automatically be updated to Off and access to all menus restored.
Axis Dwell Time: Specifies the time spent on each axis. The sweeps are
averaged and saved for further computation.
Measurement Time: Sets the duration of each EMF measurement from one
minute up to 30 minutes. The default is 6 min. For example, if Axis Dwell Time
is set to 1 s and Measurement Time is 1 min, you will get one isotropic result
after 3 s and approximately 20 at the end of the one-minute measurement.
The Current row in the summary table at the bottom of the screen displays a
running average, max and min of these isotropic results every 3 s. The
displayed values are computed from all measurements completed thus far
within the measurement time. At the end of the measurement time, the
Current row is cleared and the Total row is updated with the max, min, and
running average of all isotropic results (20 in this example).
Number of Measurements: Sets the number of EMF measurements to
complete from 1 up to 10,000. The EMF test is fully executed when the
specified number of measurements have completed.
Auto Logging On/Off: Auto Logging is On by default. This must be selected
prior to starting the measurements for the results to be logged. The average,
max, and min values of each isotropic set of three axes, the isotropic trace
data, and the computed total average, max, and min values are saved in a tab
delimited text file in internal memory.
The location of this log file is a new folder named with the current time stamp
followed by _1, and created in “/Internal Memory/EMF/”. The folder can hold
100 files. Each file holds five measurements. The 101
st
file and the files
created thereafter are stored in a new folder with the same time stamp as the
first, followed by _2 (then _3, and so on). Each file has its own time stamp.
Back: Returns to the “EMF Menu” on page 9-2 .
Figure 9-3. EMF Auto Menu
EMF Auto
Measurement
On Off
Axis Dwell Time
1 s
Number of
Measurements
5
Measurement Time
1 min
Auto Logging
On Off
Back
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