3·1
The functioning of linear integrated circuit devices in
this section is discussed using waveforms or other tech-
niques such as voltage measurements and simplified
diagrams,where required,to illustratetheir operation.
Digital logic circuits perform most of the functions
within the instrument. Functionsand operationof the logic
circuits are shown using logic symbols and terms. Most
logic functions are described using the positive-logiccon-
vention. Positive logic is a notation system in which the
more positive of the two logic levels is the HI (or 1) state;
the more negative level is the
LO
(or 0) state. Voltages
that constitute a HI or a
LO
state vary between specific
devices. Refer to the device manufacturer's data book for
specific electrical characteristics or logical operation of
commonparts.
INTEGRATED CIRCUIT
DESCRIPTIONS
Subsection three is the"Detailed Circuit Description"
which discusses the circuitry shown in the schematic
diagram foldouts, also located at the rear of this manual.
The schematic diagram number associated with each
description is identified in the text and is shown on the
block diagrams.For best understandingof the circuit being
described,refer to the appropriateschematicdiagram and
the block diagrams. The order of discussion in the circuit
descriptionsfollows the schematicdiagramnumberorder.
This section of the manualis dividedinto three subsec-
tions, with each subsectionincreasing in detail. The first
subsection is the"Simplified Block Diagram Description"
which contains a generalsummaryof instrumentoperation
by diagram. A simplified block diagram accompaniesthe
text. Subsection two is the "Detailed Block Diagram
Description" which discusses the circuit functions in
greater detail and provides a more in-depth look at the
acquisitionsystem of the 2430. A detailedblock diagramis
located in the foldout pages at the rear of this manual.
Generally, both block diagram descriptions follOW the
Signal-flow path as much as possible and not the
schematic diagram number order as is donein the
"DetailedCircuit Description."
SECTION ORGANIZATION
THEORY OF OPERATION
Section 3-2430 Service
To Next Page
Loading...
Need help?
General
