1-56
Making Measurements
Measuring Amplifiers
NOTE A receiver calibration will improve the accuracy of this measurement. Refer
to Chapter 6 , “Calibrating for Increased Measurement Accuracy.”
22.Press .
23.To find the 1 dB compression point on channel 1, press:
Notice that the marker on channel 2 tracked the marker on channel 1.
24.Press .
25.To take the channel 2 marker out of the ∆ mode so that it reads the absolute output
power of the amplifier (in dBm), press:
Figure 1-45 Gain Compression Using Power Sweep
Marker Fctn
Marker
Marker Search
−1 x1
Chan 2 Marker
Marker
∆
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