2 General Power Meter Functions
118 Keysight N1911A/1912A User’s Guide
Setting Measurement Limits
You can configure the power meter to detect when a measurement has crossed
over a predefined upper and/or lower limit value.
Limits are boundaries set for a certain power range and it can be applied to
power, ratio or difference measurement.
Figure 2-48 Limits checking applications
In this application a swept frequency signal is applied to the input of the Device
Under Test. The power meter measures the output power. The limits have been
set at +4 dBm and +10 dBm. A fail occurs each time the output power is outside
these limits as shown in Figure 2-49.
Figure 2-49 Limits checking results
Swept source
Device under test
Power meter
OUT
OUT
+4 dBm
+10 dBm
Amplitude
Frequency
o
o
o
o
o
o
o
Fail
Fail
Upper Limit Line
Lower Limit Line
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