Ceyear 4041 Series, User Manual

Page: 86 / 203

Chapter IV Spectrum Analyzer Mode
74
The spectrum analyzer provides the function of ACPR measurement. You can set the parameters of the channel to
acquire the measurement result of ACPR. You can activate the threshold test function and set the adjacent channel
threshold to observe whether the adjacent channel power exceeds the specified range. Please refer to “ACPR
measurement” in the first section of this chapter.
ACPR
Off On
Center Freq
ACPR
Ch Spacing
3.000MHz
Main Ch BW
3.000MHz
Adj Ch BW
3.000MHz
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·[ACPR Off On]: Press
【
Measure
】
→[ACPR]→[ACPR Off On] to enable or disable
the adjacent channel Power meter.
·[Center Freq]: Press
【
Measure
】
→[ACPR]→[Center Freq], and use numeric keys to
set the center frequency.
·[Main Ch BW] : Press
【
Measure
】 →[ACPR]→[Main Ch BW] ，
and use numeric
keys to set the main channel width.
·[Adj Ch BW] : Press
【
Measure
】 →[ACPR]→[Adj Ch BW] ，
and use numeric keys to
set the adjacent channel width.
·[Channel Spacing]: Press
【
Measure
】
→[ACPR]→[Channel Spacing]. Use the
numeric keys to set the channel offset.
Limit Test
Off On
Upper Limit
0.0 dB
ACPR
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Lower Limit
0.0 dB
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·[Limit Test Off On]: Press
【
Measure
】 →[ACPR]→[Limit Test Off On] to enable or
disable the threshold test to the upper or lower adjacent channel power.
·[Upper Limit]: Press
【
Measure
】 →[ACPR]→[Upper Limit] to set the threshold for
the upper channel power testing.
·[Lower Limit]: Press
【
Measure
】
→[ACPR]→[Lower Limit] to set the threshold for
the lower channel power testing.
·[Special Attention]: When threshold test is activated and if the adjacent channel
power exceed the set threshold, it will be marked and displayed on the screen in
red background.