Agilent Technologies 93000 SOC Series, Training Manual

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Hardware Overview 3-1 Major Components
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Agilent 93000 SOC Series User Training Part 1, October 2004
DC/DC (Converter) Boards
• Each cardcage is equipped with two DC/DC (Converter) Boards.
Each DC/DC board supplies the DC voltages for 4 digital channel
boards or four analog boards. The DC/DC boards for digital chan-
nels are different from the DC/DC boards for analog instruments.
The DC/DC boards for digital channel boards generate the voltages
required by the testhead electronics from the 385 V DC supply
voltage.
Clock Board
• The Clock Board provides the following resources shared by the
digital channels of a cardcage:
Master Clock Generator
– The Master Clock Generator generates the system’s master
clock. The master clock is the timing reference for all timings.
The master clock signal is distributed to all cardcages as the
timing reference of the system.
Reference Voltage Generator
– The voltages generated by the Reference Voltage Generator are
used for DC calibration.
– Reference resistors for current calibration.
High Precision PMU – The High Precision PMU is used for high precision DC measure-
ments. The PMU can measure and source either voltage or
current. The High Precision PMU can be connected to any of the
digital channels of the cardcage. Specs for the High Precision
PMU are provided as part of the training materials.
The clock board is connected to the control board, which provides a
data compression/decompression circuit for vector data and makes
the fiber optic connection to the workstation.
Figure 16 Clock Board
Clock B oard Control Board
D ata
Com pression/
Decom pression
Fiber
O ptic
Link
M aster C lock G e nera tor
R efe renc e Vo lta ge
G en erato r
To Chan
nel M
o
dules
To Works
ta
tion
High Prec ision P M U
R efe renc e Re sistors