Agilent Technologies 4395A, Ручное изменение

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System Overview
System Overview
The 4395A has three analyzer modes; network, spectrum, and impedance (available with
option 010).
In network analyzer mode , the 4395A measures the reection and transmission characteristics
of devices and networks by applying a known swept signal and measuring the response of the
test device . The signal transmitted through the device or reected from its input is compared
with the incident signal generated by a swept RF source . The signals are applied to a receiver
for measurement, signal processing, and display . The network analyzer system consists of a
source , signal separation devices , a receiver , and a display .
In spectrum analyzer mode , the 4395A measures the amplitude and frequency of a signal
spectral line by sweeping the tuning frequency of the receiver . The test signal is applied to a
receiver through an input attenuator . The spectrum analyzer consists of an input attenuator , a
receiver , and a display .
Impedance analyzer mode is available with option 010, and requires the 43961A RF impedance
test kit as well. In impedance analyzer mode , the 4395A applies test signals to the DUT
through the impedance test kit, and determines the impedance characteristics of the DUT by a
method called the I-V analysis method, that is , by measuring the voltage (V) and current across
the DUT . The 4395A 's impedance analyzer system consists of a signal source , a test kit (the
43961A RF impedance test kit), a receiver , and a data display device .
Figure A -1 is a schematic block diagram that briey illustrates the 4395A's principle of
operation. F or more information, refer to Service Manual (English)(Agilent part number:
04395-90100), which describes the 4395A's principle of operation in greater detail with a
complete block diagram.
Figure A -1. Schematic block diagram
A-2 Basic Measurement Theory