spurious
response
Undesired
response
that
is
generated
in
the
analyzer
and
displayed
on
the
graticule
.
There
are
two
types
,
harmonic
and
non-harmonic
.
Harmonic
spurious
responses
are
second,
third,
fourth,
and
so
on,
harmonics
of
the
input
signal.
Non-harmonic
spurious
responses
are
intermodulation
and
residual
responses
.
See
residual
responses.
start
frequency
Beginning
of
measurement
range
.
state-register
le
Area
in
user
memory
reserved
for
the
storage
of
measurement
results
and
associated
analyzer
settings
.
status-byte
register
Eight-bit
byte
that
tells
whether
the
following
conditions
have
occurred:
A
service
request
has
been
generated.
The
analyzer
has
sensed
a
hardware
or
operator-usage
error
.
A
programming
command
has
been
executed
and
its
operation
has
been
completed.
The
measurement
range
has
been
swept
(measured).
The
analyzer
is
prepared
to
sweep
again.
The
analyzer
is
displaying
a
message
in
the
message
area
on
the
right
side
of
the
screen
(for
example
,
\UNCAL"
or
\UNCOR").
Whenever
a
condition
is
satised,
the
analyzer
sets
the
corresponding
bit
in
the
status
byte
true
(to
1).
This
way
,
the
operation
of
the
analyzer
can
be
monitored
by
a
computer
program
with
the
use
of
the
RQS
or
STB
programming
command.
The
service-request
mask
denes
the
analyzer
state
that
generates
a
computer
service
request.
The
mask
is
a
copy
of
the
status
byte
.
When
the
value
of
the
status
byte
matches
the
value
of
the
mask,
a
service
request
is
generated.
(The
value
of
bit
6
has
no
eect.)
Glossary-17
Summary of Contents for 70000 series
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