Gw Instek GSP-830Spectrum analyzer, spectrum analyzerBandwidth (RBW) 3/30/300 kHz/4 MHz GSP-830 Hoja De Datos

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GSP-830
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POWER 
MEASUREMENT 
   83
 
ACPR Measurement 
Overview 
 
Background 
ACPR (Adjacent Channel Power Ratio), or ACLR 
(Adjacent Channel Leakage Ratio), refers to the amount 
of  leakage power coming from the main radio channel 
which affects adjacent channels as signal distortion. 
Parameter Channel 
bandwidth 
The frequency bandwidth the target 
channel occupies. 
Range: 0kHz to Current span 
 Channel 
space 
The frequency distance between each 
main channel. 
Range: 0kHz to 3GHz 
 Adjacent 
channel 
bandwidth 1 & 2 
The frequency bandwidth the 
adjacent channels occupy. 
Range: 1kHz to 3GHz 
 Adjacent 
channel 
offset 1 & 2 
The frequency distance between the 
adjacent channels and main channel. 
Range: 1kHz to 3GHz 
ACPR measurement step 
 
1. Activate ACPR 
1.  Press the Measurement key. 
Meas
 
 
2.  Press F2 (ACPR On). 
ACPR
On     Off
F   2
 
 
3.  The display switches to ACPR mode, updating the 
ACPR results in the lower half  of  the display. 
 
 
Lower
ACPR 1
Upper
ACPR 1
Lower
ACPR 2
Upper
ACPR 2