Agilent Technologies E8362A Service Manual page 142

Theory of Operation
Network Analyzer System Operation
Synthesized Source Group
The built-in synthesized source generates a swept, stepped, or continuous wave (CW)
signal in the frequency ranges as listed in
an internal automatic leveling control (ALC) circuit. A portion of the source signal is
routed to one of the reference receivers (R1 or R2), and fed back to the source for phase
lock. The maximum output power level of the network analyzer at the test ports is shown
in Table 5-1. The operation of the source functional group is described in
Operation" on page 5-5.
Table 5-1 Frequency Range and Maximum Output Power Level
45 MHz
Frequency
to
Range
500 MHz
Max. Pwr. Out
+5 dBm
Std & Opt. 014
+3 dBm
Opt. UNL
+3 dBm
Opt. UNL/014
Signal Separation Group
The source signal 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 then is transmitted to the receiver group. The signal separation group
also provides attenuation for the test signals, RF path switching to allow forward and
reverse measurements, and external connections for the DUT. The operation of the signal
separation functional group is described in
page 5-15.
Receiver Group
The receiver converts the test signal to a 41 kHz intermediate frequency (IF) for signal
processing, retaining both magnitude and phase characteristics. The IF is converted to
digital signals by the digital processing group. The operation of the receiver functional
group is described in
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 signal
processing and analyzer control, and output to the display. The operation of the digital
processing and control functional group is described in
Control Group Operation" on page
Power Supply Group
The power supply functional group provides power for the other assemblies in the
instrument. The operation of this functional group and its assemblies is described in
"Power Supply Group Operation" on page
5-4
500 MHz 2 GHz
to to
2GHz 10 GHz
+6 dBm +5 dBm
+4 dBm +3 dBm
+4 dBm +3 dBm
"Receiver Group Operation" on page
5-23.
PNA Series Microwave Network Analyzers
Table 5-1. The source output power is leveled by
10 GHz 20 GHz
to to
20 GHz 30 GHz
+2 dBm −2 dBm
+1 dBm −2 dBm
−4 dBm
0 dBm
"Signal Separation Group Operation" on
5-20.
"Digital Processing and Digital
5-29.
E8362A, E8363A, E8364A
"Source Group
30 GHz 40 GHz 45 GHz
to to
40 GHz 45 GHz 50 GHz
−6 dBm −7 dBm −12 dBm
−6 dBm −9 dBm −15 dBm
−8 dBm −11 dBm −17 dBm
Service Guide E8364-90001
to