Agilent Technologies 85225F - Manual (Page 20)

20 Installation and User’s Guide
1 Introducing the Agilent 85225F Performance Modeling System
The RF Subsystem
S- parameter device characterization is provided by the RF subsystem.
The RF subsystem contains the Agilent E8364B PNA Series vector network
analyzer.
Its integrated synthesizer supplies a swept or CW RF source signal from
10 MHz
*
to 50 GHz.
The integrated test set separates the RF source signal into reference and
test signals, and provides RF connection via cables and adapters to the
external bias networks.
The DC Subsystem
Precision DC characterization and bias for the S- parameter measurements
are provided by one of the following three DC subsystems.
The DC subsystem may contain one of the following three instruments.
Agilent 4156C Precision Semiconductor Parameter Analyzer
The Agilent 4156C precision semiconductor parameter analyzer provides
DC force (supply) and sense (measure) capability from its HRSMUs (high
resolution source/monitor units).
Optionally, the Agilent 4156C may be configured with a 41501B SMU PGU
expander is connected to and controlled by the 4156C via the expander
box interface. The 41501B provides a GNDU (active ground unit) and,
depending on option configuration, an HPSMU (high- power source/monitor
unit), two MPSMUs (medium- power source monitor units), and/or two
PGUs (pulse generator units).
The DC signals are routed through feedthrough panels via triaxial cables to
the bias networks.
Agilent E5260A 8-Slot High Speed Parametric Measurement Mainframe
The Agilent E5260A provides DC force (supply) and sense (measure)
capability from its plug- in source/monitor units.
The Agilent E5290A plug- in high speed high power source/monitor unit
provides up to 200 volts of potential and 1 amp of current to the device
under test.
The Agilent E5291A plug- in high speed medium power source/monitor unit
provides up to 100 volts of potential and 200 milliamps of current to the
device under test.
* Due to the minimum operating frequency of the bias networks, the performance modeling system low end
frequency range is 45 MHz.