
CHAPTER
6
UTILITIES
&
FEATURES
Revised: 15 Feb 2017
6-7
ESTeem Models 195MHC
Spectrum
Analyzer
A
feature
of
the
ESTeem
Model
195M/H/C
configuration
utility
is
the
spectrum
analyzer
found
in
the
Analyzer
tab
(Figure
12).
A
spectrum
analyzer
is
used
to
visually
represent
the
radio
spectrum
around
a
programmed
frequency.
The
analyzer
displays
the
signal
amplitude
on
the
vertical
axis
and
the
frequency
on
the
horizontal
axis.
The
software
utility
uses
the
ESTeem
Model
195C
or
195M
receiver
to
visually
display
the
radio
activity
in
the
operating
frequency
band.
The
Model
195C
can
be
used
to
analyze
450
‐
470
MHz
frequency
band
and
the
195M
can
be
used
for
the
150
‐
174
MHz
frequency.
The
analyzer
has
proven
very
accurate
when
compared
to
the
results
of
a
bench
model
analyzer.
The
software
spectrum
analyzer
has
many
of
the
standard
features
you
would
find
on
a
laboratory
grade
analyzer.
The
following
is
a
summary
of
the
configuration
parameters:
Center
Frequency
–
This
frequency
value
can
be
entered
with
a
keyboard
or
used
as
a
drop
down.
The
center
frequency
represents
the
center
line
in
the
analyzer.
Span
–
The
span
is
the
total
frequency
bandwidth
show
on
screen.
For
example
in
Figure
11,
the
span
is
set
to
5
MHz.
The
analyzer
is
broken
up
into
a
10
x
10
grid.
The
total
frequency
span
of
5
MHz
would
represent
500
KHz
(5MHz/10)
per
division.
Reference
Level
–
The
reference
level
is
the
value
for
the
top
line
of
the
analyzer.
The
reference
level
in
conjunction
with
adding
or
removing
external
attenuation
will
allow
for
measurements
of
both
small
and
high
power
signals.
Ext
Atten
–
External
attenuation.
This
number
will
need
to
be
adjusted
if
an
external
attenuator
is
used.
Display
Line
–
Displays
horizontal
line
on
screen
with
signal
measurement
(Figure
12).
Figure
11:
Save
and
Load
Configuration
Figure
12:
Marker
and
Display
Line
Example
Содержание 195C
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