36
N5245-90002 User’s and Service Guide
N5244/45AS Option H85
Example: Making High Power Measurements With Option H85
24.Configure the test setup as shown in
. Turn On the DUT and measure the
S21
gain
of the amplifier under test to confirm the proper operation of the measurement test setup.
Figure 35
Forward High Power Measurement Configuration
25. Continue with any other high power measurements.
NOTE
Ratio measurements, such as gain, will be correctly displayed. However, the
displayed absolute power levels on the analyzer will
not
be correct. To correctly
interpret power levels and the gain of the booster amplifier, the attenuator setting
must be taken into consideration.
If no calibration has been performed or if the instrument is in an un-calibrated state, the
following must be taken into consideration when interpreting the measured data:
• The value of attenuation added to receiver A and B.
• The R channel reference level supplied from the coupler arm of the 20 dB coupler.
This procedure can be repeated to setup the reverse high power configuration.
Fix Attenuator
Isolator
In
Out
Fix Attenuator
DUT
Booster Amplifier
RF
INPUT
RF
OUTPUT
Coupler
Arm
20 dB
Coupler
Main
Coupler
Output
Fix
Attenuator
CPLR ARM
RCVR A IN
SOURCE OUT
SOURCE OUT
RCVR R1 IN
CPLR THRU
CPLR THRU
CPLR ARM
RCVR B IN
Содержание N5244/45AS Option H85
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