Filter
Top Products
o
o
a
a
O
o
a
I
o
t
o
O
o
o
I
o
a
t
o
o
a
o
o
o
o
a
a
o
o
o
a
o
o
o
o
O
o
t
I
o
o
o
o
I
GLOSSARY
.._-Il"^^1"_l':,*ing
gtossary
is
presented
as
an
aid
to
understand
the
terms
as
they
aie
used
in
thi"
do"urn"nt
and
with
reference
to spectrum
anatyzers.
GENERAL
TERMS
Center
Frequency.
That
frequency
which
corresponds
to
the center
of
a
frequency
span,
expresseO
in
hertz.
Baseline
cftpper (rntensrfier).
A
means
of
increasing
the
brightness
of
the
signat
retativ"
i;l;;
basetine
por_
tion
of
the
display.
dBc.
Decibels
referenced
to carrier
level.
1_8i.. .A
unit_
to express
power
level
in
decibels
refer-
enced
to
1
milliwatt.
dBmV.
A
unit
to express
voltage
levels
in
decibels
referenced
to
1
millivolt
dBpV.
A
unit
to
express
voltage
levels
in
decibets
referenced
to
1
microvolt.
Efrectlve.
Frequency_.T:1g.".
That
range
of
frequency
over
which
the
instrument
performanie
is
specified.
The
lower
and
upper
limits
are
"if.""r"t:in
n".tr.
Envelope
Display.
The
display
produced
on
a
spectrum
anatyzer
when
the resotutibn
bino*iOt
ii
greater
tnan
the
spacing
of
the
individual
trequenci
"o,ipon"nt".
Freguency
Band.
A
part
of
effectjve
frequency
range
over
which
the
freouency
can
be
adlusted,
Lxpressed
in
hertz.
Full
.Span
(Maximum
Span).
A
rnode
of
operation
in
which
the
spectrum
anatyzer
"""n,
"n "ntir"
tr"qu"n"y
band.
lnterm-odulation
Spurious
Response
(lntermodulation
Distortion
-
tMD).
An..unwanre;
;d;i;*
anatyzer
response
resulting
from
the
mixing
of
the
nth
order
fre_
quencies,
due
to
non-linear
elemints
ot
in"
spectrum
analyzer,
the
resultant
unwanted
,".fonr"
being
displayed.
Llne
Display.
The
display
produced
on
a
spectrum
anatyzer
when
the
resolution'bandwidih
i"
t"."
than
the
spacing
of
the
signar
ampritudes
of
the
individuar
fre-
qu€ncy
components.
Llne
SpectruT.
A
spectrum
composed
of
signal
ampli-
tudes
of
the
discrete
frequency
components.
Markers.
The
instrument
uses
three
typ€s
of
markers:
Waveform
Markers.
_
When
the
Marker
function
is
enabled,
it
provides
a
movable
cursor
with
readout
of
frequency
and
amplitude
at
the
marker
position.
When
the
delta
marker
mode
is
enabled,
a
second
marker
allows
operations
and
readout
between
the two_
marker positions.
(Also
see
Waveform
Marker
Terms.)
Update
Marker.
-
Marks
the
current
sweep
posi_
tion
in
a
digitat
storage
disptay
as
the
disptiy
is
being
updated.
Video
Mark
9{"_rryl
VTDEOIMARKER
inpul
from
a
Tektronix
1405
Television
Sideband
Analyzer.
The
Video
Markers
mark
frequencies
of
interest
on
the
televi-
sion
signal.
Maximum
Safe
Input
power
WITHOUT
DAMAGE...The
maximum
power
apptied
at
the input
which
will
not cause
degiadation
oi
the
instrument
characteristics.
WITH
DAMAGE.
The
minimum
power
applied
at
the
input
which
will
damage
the
instrument.
'
Pulse
Sfetcher.
A
pulse
shaper
that
produces
an
out_
put
pulse,
whose
duration
is
greater
than
that
of
the
input pulse,
and
whose
amplitude
is
proportional
to
that
of
the
peak
amplitude
of
the
input
pui"e.'
Scanning
Velocity.
Frequency
span
divided
by
sweep
time and
expressed
in
hertz
pir
second.
Signal
ldentitier.
A
means
to identify
the
spectrurn
o,
the
input
signal
when
spurious
,esponses
are
possible.
Video.
The
term
is
used
here generally
to
mean
a
sig_
nal
after
the
detector
stage.
lt
can
also
be
used
more
specifically
to
mean
a
baseband
(zero
carrier
frequency)
television
signal.
Video
Filter.
A
post
detection
low_pass
filter.
Zero
Span.
A
mode
of
operation
in
which
the frequency
span
is
reduced
to
zero.
Appendix
A
-
4g4Al494Ap
Service,
Vol.
1
A-1