GW Instek GSP-830 User Manual - Manual (Page 52)

GSP-830 User Manual
52
Amplitude Correction
Overview
Background Amplitude correction adjusts the GSP-830’s frequency
response by changing amplitudes for specific frequencies.
Range Correction set 5 sets, 30 correction points each
Amplitude −40 to +40dB per correction point,
0.1dB resolution
Frequency 9kHz to 3GHz, 1kHz resolution
Icon The amplitude icon appears at the bottom of
the display when amplitude correction is on.
Correct amplitude step by step
Example
description In this example, the network between the GSP-830 and
DUT distorts the waveform and pushes the amplitude
down at around 2.4GHz. Amplitude correction can bring
the amplitude back to its original level.
Correction level In this example the amplitude around 2.4GHz is boosted
by +1 to +3dB as shown below.
2.2GHz +2.5dB
2.3GHz +1.3dB
2.4GHz +2.8dB
2.5GHz +2.5dB
2.6GHz +1.2dB
Waveform (before
correction) The frequency response is distorted (non-flat) and the
level is attenuated by 2 to 3dB.