Agilent Technologies E8362C Service Manual page 140

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
control (ALC) circuit. In the standard analyzer, 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. In the Option 080 (frequency offset mode)
analyzer, a portion of the source signal is routed to a frequency offset receiver to provide the phase lock
signal. The maximum output power level of the network analyzer at the test ports is shown in
The operation of the source functional group is described in
Table 5-1 Frequency Range and Maximum Output Power Level
Frequency 10 MHz to
Range 45 MHz
Max. Pwr. Out
Standard +2 dBm
Opt. 014 +2 dBm
Opt. UNL 0 dBm
Opt. UNL/014 0 dBm
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.
Hardware options added to the analyzer also provide attenuation for the test signals, RF path switching to
allow forward and reverse measurements, and external connections for the DUT.
Refer to "Signal Separation Group Operation" on page
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 signal is converted to a digital signal by the digital
processing group.
Refer to "Receiver Group Operation" on page
Frequency Offset Group
This group provides the phase lock needed for frequency offset mode (Option 080), where the source and
receivers are tuned to different frequencies.
It also provides reference signal transfer switches in the channel R1 reference path for automatically adding
or removing an external reference mixer in the measurement setup.
Refer to "Frequency Offset Group Operation (Options 080 and 081)" on page
IF Access Group
This group provides the circuitry needed for the IF access (Option H11) capability.
Option H11 is also necessary for the operation of the pulse measurement capability, Option H08.
5-4
Table 5-1. The source output power is leveled by an internal automatic leveling
45 MHz 10 GHz
to to
10 GHz 20 GHz
+5 dBm +3 dBm
+5 dBm +2 dBm
+3 dBm +1 dBm
+3 dBm 0 dBm
5-21.
PNA Series Microwave Network Analyzers
"Source Group Operation" on page
20 GHz 30 GHz
to to
30 GHz 40 GHz
0 dBm -4 dBm
-2 dBm -6 dBm
-2 dBm -6 dBm
-4 dBm -8 dBm
5-16.
5-24.
E8362C, E8363C, E8364C
Table 5-1.
5-6.
40 GHz 45 GHz
to to
45 GHz 50 GHz
-5 dBm -10 dBm
-7 dBm -12 dBm
-9 dBm -15 dBm
-11 dBm -17 dBm
Service Guide E8364-90038