Keysight N5221A Service Manual page 127

PNA Series Microwave Network Analyzers
N5221A/22A
Technical Specifications documents, available online at:
http://literature.cdn.keysight.com/litweb/pdf/N5221-90002.pdf
http://literature.cdn.keysight.com/litweb/pdf/N5221-90001.pdf
Refer to "Synthesized Source Group Operation" on page
Signal Separation Group
Each of the incident signals from the source group is separated into a reference path and a test path. The
reference signal is transmitted to the receiver group. The test signal is transmitted through—and reflected
from—the DUT and is then transmitted to the receiver group.
The signal separation group includes:
• RF path switching to allow forward and reverse measurements
• external connections for the DUT (configurable test set)
• optional step attenuators in the source and receiver paths
• optional bias tees
Refer to "Signal Separation Group Operation" on page
Receiver Group
The receiver converts the test and reference signals to 7.438 MHz intermediate frequency (IF) signals for
signal processing, retaining both magnitude and phase characteristics. The IF signals are converted to
digital information by the digital processing group.
Refer to "Receiver Group Operation" on page
Digital Processor and Digital Control Group
The digital processor and digital control group are divided into a front panel group and a data acquisition and
processing group. The front panel group provides communication to the network analyzer. The data
acquisition and processing group provides the output to the display, in addition to signal processing and
analyzer control.
Refer to "Digital Processing and Digital Control Group Operation" on page
Power Supply Group
The power supply functional group provides power for the other assemblies in the instrument.
Refer to "Power Supply Group Operation" on page
1. For frequency ranges and maximum output power levels, refer to the section "Test Port Output" in the Data
Sheet and Technical Specifications documents (see hyperlinks above).
Service Guide N5222-90001
and
1
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5-6.
5-15.
5-20.
5-31.
Theory of Operation
Network Analyzer System Operation
5-26.
5-5