Keysight N5244/45AS Option H85 User's And Service Manual page 20

N5244/45AS Option H85
Operation
This configuration allows the user to stimulate Port 1 with high power. Port 1 must have a high
power amplifier, high power coupler, isolator and attenuators. The isolator, reference and
measured receiver attenuators are optional. They are dependent on the high power couplers
coupling factor, amplifiers reverse isolation and power required to test the device. The
attenuator, located at the high power coupler arm, may not be required if the coupling factor
attenuates the signal adequately for the reference receiver channel. The same is also true for
the measure receiver channels. The measure receiver attenuators for A IN, B IN, C IN and D IN
may have sufficient range to compensate for the users desired power level. Ports 2, 3 and 4
each have a high power isolator located between the SOURCE OUT and CPLR THRU. This
isolator is required to protect the components inside the PNA-X. The isolator can be replaced by
a high power attenuator or circulator. Refer to
Figure 16 4-Port, One Way High Power Configuration
RCVR A IN
CPLR ARM
Fix Attenuator
SOURCE OUT
CPLR THRU
RCVR R1 IN
Booster Amplifier
RF
INPUT
16
High Power 1 Way
Direction Configuration
DUT
Fix
Attenuator
RF
OUTPUT
Coupler
Arm
20 dB
Coupler Coupler
Main Output
Figure 16 and Figure 17 on page
Fix Attenuator
Fix Attenuator
Out
N5245-90002 User's and Service Guide
17.
RCVR B IN
CPLR ARM
Fix Attenuator
SOURCE OUT
CPLR THRU
In
Isolator