Alternate
gain
compression
level
if
present,
the
gain-compression
error
of
signal
peaks
below
the
dashed
line
does
not
exceed
the
gain-compression
error
of
the
mixer-input-level
setting
(usually
about
1
dB
for
mixer
levels
of
05
dBm).
Alternate
reference
level
when
present,
supersedes
the
top
graticule
line
.
Amplitude
oset
indicates
the
amount
of
oset
added
to
all
amplitude
annotation.
Box
selects
the
character
for
transfer
to
the
title
line
or
the
data
line
.
Also
marks
character
for
modication
in
the
data
line
.
Character
set
provides
character
entry
into
the
title
line
or
the
data
line
.
Data
line
is
a
scratch
pad
for
composing
or
displaying
custom
functions
.
Also
shows
data
entry
for
NNNNNNNNNNNNNNNNN
TITLE
and
NNNNNNNNNNNNNNNNNNNNNNN
COMMAND
functions
.
Detection
mode
lights
when
measurements
are
made
with
optional
detection
modes
.
Error
message
explains
the
type
of
error
sensed.
Refer
to
Chapter
6
for
a
description
of
system
error
messages
.
Frequency
oset
indicates
the
amount
of
oset
added
to
frequency
annotation.
Function
in
progress
lights
while
some
functions
execute
,
such
as
video
averaging.
Also
lights
when
some
functions
change
while
the
sweep
is
progressing.
Message
area
describes
the
progress
of
some
functions
.
Over
sweep
provides
faster
sweep
times
,
when
autocoupled,
by
allowing
an
additional
2%
of
frequency
error
and
2
dB
of
amplitude
error
before
displaying
the
uncalibrated
indicator
(UNCAL).
Space
enters
a
space
into
the
title
line
or
data
line
.
Title
line
contains
messages
composed
with
NNNNNNNNNNNNNNNNN
TITLE
.
1-20
Overview
Summary of Contents for 70000 series
Page 42: ...Auxiliary Measurement Indicators Figure 1 8 Auxiliary Measurement Indicators Overview 1 19 ...
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Page 346: ...Figure A 2 Simpli ed Lightwave Signal Analyzer Block Diagram Theory of Operation A 3 ...
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