Finalsetup - Agilent Technologies 8719D User Manual

The optimum sampler power level is -10 dBm.
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With the above points in mind, the amount of attenuation can be calculated from the
following equations:
Attenuator A = + 20 dBm - 16 dB - (-10 dBm).
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Attenuator B = +30 dBm - 16 dB - (-10 dBm).
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18. Set the internal step attenuators to the values calculated in the previous step (rounding off
to the highest 5 dB step). Press 1Menu) POWER ATTEMUATDR A @@) ATTEWATDR 3 125)
19. Switch on the booster amplifier.
Caution From this point forward,
off the booster amplifier. Pressing B will return the analyzer to its default
power level and default internal attenuator settings. This increase in power
may result in damage to the DUT or analyzer.
20. To activate the external reference mode, press &ZZ] Il?S~ MODE EXT R CHAI ON.
21. Measure the output power from test port 1 and verify that it is as expected.
22. If you are measuring a highly reflective device, high power isolators should be inserted in
place of the jumpers located between the two sets of front panel SWITCH and COUPLER
connectors.
Final Setup
23. Con&m that all power and attenuator settings are correct, and set the following
measurement parameters:
24. Perform a response calibration:
a. Connect the test port cables of the analyzer to form a through configuration.
25. Make the connections as shown in Figure 2-55. Switch on the DUT and measure the S21
gain of the amplifier under test to con&-m the proper operation of the measurement test
set up.
2-62 Making Measurements
Attenuator A = -14 dB
Attenuator B = -24 dB
press w unless you have first switched
DO NOT