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Making Measurements
Measuring Amplifiers
Making High Power Measurements with Option 012(ES Analyzers Only)
Analyzers equipped with Option 012 can be configured to measure devices that have high
power outputs. With direct sampler access, you can insert attenuators between the
couplers and samplers, protecting the samplers from excessive power.
Figure 1-52 Internal Signal Paths of the Option 012 Analyzer
1. Estimate the maximum amount of gain that could be provided by the DUT and, as a
result, the maximum amount of power that could be received by test port 2. For
example, if a DUT with a maximum gain of +15 dB receives an input of +5 dBm, then
the maximum amount of power that could be received by test port 2 is +20 dBm.
2. Calculate the amount of attenuation needed between the analyzer’s coupler and
sampler in order to not exceed the optimum sampler power level of −10 dBm.
In this example, it will be necessary to take the following into consideration:
• Samp ler B will be coupled to the analyzer RF path that will receive a maximum of
+20 dBm from the DUT.
• Analyzer coupler loss is −13 dB.
• T he optimum sampler power level is −10 dB m .