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6-1
6.1
Introduction
This section supplies a functional description of the
Model 7001 in block diagram form, as well as details of
the various circuit board assemblies and functional
blocks within the instrument. Some of this information
is presented in the form of simplified schematics. De-
tailed schematics and component layouts are located at
the end of Section 8.
6.2
Overall functional description
The Model 7001 mainframe contains five major circuit
boards, and accepts up to two plug-in relay cards
which contain additional analog circuitry for signal
paths and digital circuitry for control. Figure 6-1 is a
block diagram showing interconnection of the Model
7001 digital board, front panel display board, micro-
DIN board, BNC board, and system backplane. The
board functions can be summarized as follows:
Digital board
a predominantly digital board which
contains the main microprocessor, operating system,
memory, IEEE-488 interface, and support circuitry.
Backplane board
provides the mechanical and elec-
trical interface between the digital board and any cards
plugged into the Model 7001 card slots.
Display board
includes the vacuum fluorescent dis-
play (VFD), a secondary microprocessor for control of
the display, the display drivers, and front panel key
matrix.
BNC board
a predominantly mechanical board
which serves as a distribution point for control signals
and AC power.
Micro-DIN board
a digital board which interfaces
the rear panel Digital I/O and Trigger Link micro-DIN
connectors to the digital board.
A switching-type power supply board furnishes
+6VDC and +14.6VDC to the other boards and display.
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