Agilent Technologies 8719ES User Manual page 77

With the previous points in mind, the amount of attenuation can be calculated from the
following equations:
• Attenuator A = +20 dBm − 13 dB − (−10 dBm). Attenuator A = +17 dB
• Attenuator B = +30 dBm − 13 dB − (−10 dBm). Attenuator B = +27 dB
18.Set the internal step attenuators to the values calculated in the previous step (rounding
off to the highest 5 dB step). Press
ATTENUATOR B
19.Switch on the booster amplifier.
From this point forward, DO NOT press
CAUTION
switched off the booster amplifier or saved this state and renamed it to
UPRESET. Pressing
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
EXT R CHAN ON
21.Measure the output power from test port 1 using a power meter 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.Confirm that all power and attenuator settings are correct, and set the following
measurement parameters:
Trans: FWD S21 (B/R)
Meas
24.Perform a response calibration:
• Connect the test port cables of the analyzer to form a thru configuration.
• Press
CALIBRATE MENU
Cal
25.Make the connections as shown in
gain of the amplifier under test to confirm the proper operation of the measurement test
setup.
Power
.
25 x1
Preset
.
RESPONSE
Figure
ATTENUATOR A
unless you have first
Preset
will return the analyzer to its default power
INSTRUMENT MODE
System
MDE
.
THRU
1-51. Switch on the DUT and measure the S
Making Measurements
Measuring Amplifiers
15 x1
21
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