GW Instek GSP-830 User Manual - Manual (Page 83)

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