Selecting Power Ranges And Attenuator Settings - Agilent Technologies 8719D User Manual

Selecting Power Ranges and Attenuator Settings

14. Select a power range that will not exceed the maximum estimated power level that will
force the DUT into compression. For example, if your booster amplifier has a gain of
+ 15 dB and the DUT will compress if supplied with +20 dBm, then you would adjust the
analyzer output power to not exceed + 5 dBm by pressing (Menu) :$&$& :&I&:.:&#&Z 'k#
15. Adjust the analyzer power level to be below the maximum limit of the power range by
pressing @ (or less) Ixl).
16. 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 when the DUT is
in compression. For example, if a DUT with a maximum gain of + 10 dB receives an input
of + 20 dBm, then the maximum amount of power that could be received by TEST PORT 2
is +30 dBm.
Port 1
Jumper
17. Calculate the amount of attenuation needed between the analyzer's couplers and samplers
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:
ashighas +2OdBm.
Sampler B will be coupled to the analyzer RF path that will receive a maximum of
n
+ 30 dBm from the DUT.
Analyzer coupler loss is -16 dB.
n
/ - - - I ; .
Figure 2-54. Internal Signal Paths of Analyzer
Jumper
Input
M a k i n g M e a s u r e m e n t s