Ceyear 4041 Series, User Manual

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Chapter IV Spectrum Analyzer Mode
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measurement interface.
f) Set the center frequency of main channel:
Press [Center Freq], and then set the center frequency of the main channel to 1 GHz with the numeric key.
g) Set the main channel bandwidth:
Press [Main Ch BW], and then set the bandwidth of main channel to 1 MHz with the numeric key.
h) Set the adjacent channel bandwidth:
Press [Adj Ch BW], and then set the adjacent channel bandwidth to 2 MHz with the numeric key.
i) Set the channel offset:
Press [Channel Spacing], and then set the channel offset to 1 MHz with the numeric key.
j) Start the adjacent channel power ratio test:
Press [ACPR Off On], after that the measurements are displayed at the bottom of the screen. Schematic diagram
of adjacent channel power ratio measurement is as shown in Fig 4-4.
Fig 4-4 Adjacent channel power ratio measurement
k) Limit setting:
The Limit test function is intended to facilitate the user to observe whether the adjacent channel power exceeds
the set range. Press
【
Measure
】
, [ACPR] and [More 1 of 2] successively to enter the setup menu of adjacent
channel power ratio Limit test;
Press [Upper Limit], and then enter the upper adjacent channel limit with the numeric key;
Press [Lower Limit], and then enter the lower adjacent channel limit with the numeric key.
l) Enable the limit test function: