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Press
[Meas] >
TOI
to enter the following panel menu.
Meas/Setup
:
Avg|Hold Num
（
On/Off
）
: Press average time (on) to specify the average number of sweep to
calculating the measurement results. Sweep time range is from 1 to 999. User can change the average
time by using the numeric key, rotary knob, direction key, or touch the panel menu. Measured average
result will be displayed after the sweeping. Select (off) to turn off this measuring average function.
Avg Mode
（
Exponential/Repeat
）
: Switch between exponential and repetition average mode. When the
specified average time of sweep is reached, this average mode is used to determine the average
operation mode of the spectrum analyzer.
When the exponential average mode is selected, after a specified average time is reached, each
channel trace data is weighted exponentially, added to the previous average value and then take the
average. In the exponential average mode, the weight of the new data is larger than that of the old data,
which is conducive to track signals that change slowly. Measured average result will be displayed after
the sweeping.
When the repetition average mode is selected, after a specified average time is reached, all the previous
data will be delete and restart the sweeping.
Meas Preset
: Reset all parameters of the current measuring mode to factory setting.
Adjacent Channel Power
Figure
5-5
Measurement of Adjacent Channel Power
Measuring the main channel power, the power of previous channel and the last channel.
Set a main channel and adjacent channel on the left and right side, the main channel is centered on the
central frequency point, and the left and right adjacent channels are symmetric with respect to the main
channel.
Channel parameter can be changed by setting the bandwidth of the main channel and the adjacent
channel, and the adjacent channel spacing (the distance between the adjacent channel and the main
