RIGOL Chapter 4 Functions of the Front Panel of EMI
4-20 RSA3000E User Guide
）
k
10101)(k
10log
（
NewAvg
10
Newdata
10
OldAvg
+×−
=
(4-9)
In the above formula, the parameter unit is dB.
Scalar: In this mode, all filtering and averaging processes work on the
voltage envelope of the signal. This average type is the most appropriate
one for observing the great envelope fluctuations of AM or pulse-modulated
signals such as radar and TDMA transmitters. The formula is shown as
follows:
）（
k
10101)(k
20logNewAvg
20
Newdata
20
OldAvg
+×−
=
(4-10)
In the above formula, the parameter unit is dB.
3. Avg Auto
Sets the status of auto average. When the auto average function is enabled, the
instrument will select the best average type based on the current settings. When
you select one of the average types manually, the instrument will apply the
selected type, and the auto average status is set to Manual.
Limit
Sets the parameters of limit lines. After you press Preset, the limit line
measurement function is disabled, but the data of the limit lines will be reserved. The
limit line data will only be deleted when the loading mode is
Default. When you exit
the measurement mode, the limit line data will not be deleted.
1. Test Limits
Selects whether the displayed traces are tested against the displayed limit lines.
For each displayed trace, the corresponding limit line is turned on, and a
message will be displayed at the upper-left corner of the trace to indicate
whether the test passes or fails.
2. Select Limit
Selects the current limit line. By default, it is Limit1.
3. Limit State
Enables or disables the display of the limit line. When the limit line is on, the
measurement interface displays the limit line, and the corresponding traces are
tested against the current limit lines. Each limit line is displayed in a different
color.
4. Edit Limit
When "Display State" of the limit line is set to "On", this menu is valid. When you
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