Chapter 12 EMF (EMI) Operation
Performing automatic measurements
9102 Handheld Spectrum Analyzer Software version 5.31
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2 Enter the new reference power or voltage either using the numeric
keys, closing the input field with the appropriate enter key, or with
the U
P/DOWN arrow keys.
The new reference level appears at the top of the vertical axis. The
reference is based on the actually set output power.
Setting the hardware
attenuation
1 In the main menu, push the Attenuation softkey.
The Attenuation input field opens.
2 Enter a new attenuation value in the range from 0 to 50 dB (in
10 dB steps) and close the input field with one of the enter keys, or
use the U
P/DOWN arrow keys to select the attenuation value in the
range 10 to 50 dB.
If the attenuation value is changed, the attenuation option will
change to “manual”.
Performing automatic measurements
When using the 9171 Isotropic Antenna you can perform measure-
ments in automatic mode. A prerequisite for performing automatic
measurements is that the 9171 Isotropic Antenna’s controller cable is
connected to the 9102’s multiport. Via this connection the 9102 reads
the relevant correction data from the antenna and controls the
measurement. However, if you use a tripod measurement setup in
conjunction with an extension cable, the cable attenuation also has to
be taken into account by using cable correction data.
There are two different options selectable from the Measure menu for
performing automatic measurements: Auto and Quick. The two
different modes are described in “Auto measurements” on page 205
and “Quick measurements” on page 207.
NOTE
Depending on the unit you use and the specified display calculation
the Ref. Level softkey changes to Ref. Power or Ref. Voltage. Further-
more the input field name and the display on the left-hand side of
the screen changes accordingly.
NOTE
If the 9171 Isotropic Antenna is not connected via its controller cable
to the 9102’s Multi Port, the two softkeys Auto and Quick will be
greyed out in the EMF (EMI) Measure menu.
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