HP 8340b User Manual

A5
KEYBOARD ASSEMBLY
AND
A7
LOWER
KEYBOARD ASSEMBLY
The
A5
keyboard
and
the
A7
lower
keyboard
assemblies
provide
the
mechanical
mounting for
all
instrument
key
assemblies.
The
key
annunciators
are
also
located
on
these
assemblies.
The
keyboard
assemblies
communi¬
cate
with the
instrument
microprocessor
via
the
A6
keyboard
interface
assembly.
A6
KEYBOARD
INTERFACE ASSEMBLY
The
A6
keyboard
interface
assembly
provides
the
communications
link
between
the
instrument
microprocessor,
the front
panel
rotary pulse
generator
(RPG),
and
A5
and
A7
keyboards.
The
interface
contains
all
data
buffers,
annunciator
latches,
and
interrupt circuitry
to
monitor
the
front
panel
keyboards
and
annunciators.
RPG
control
circuitry
(counters/timers)
and
the
instrument
preset
circuitry
are
also
located
on
the
A6
assembly.
G-4
Front
Panel Theory
of
Operation
HP 8340B/41B

HP 8340b Specifications

General

Brand	HP
Model	8340b
Category	Inverter
Language	English