HP 8753D - Page 61

Using the
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1REF=1FIXED MKR
Key
to activate
a Fixed
Reference Marker
1.
T
o set
the frequency
value of
a xed
marker that
appears on
the analyzer
display
,
press:
4
MARKER
5
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1MODE
MENU
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1REF=1FIXED
MKR
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1MODE
MENU
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FIXED
MKR
POSITION
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FIXED
MKR
STIMULUS
and
turn
the
front
panel
knob or
enter a
value from
the front
panel
keypad.
The
marker
is
shown
on
the
display
as
a
small
delta
(1),
smaller
than
the
inactive
marker
triangles
.
2.
T
o
set
the
response
value
(dB)
of
a
xed
marker
,
press:
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FIXED MKR
VALUE and
turn the
front
panel
knob
or
enter
a
value
from
the
front
panel
keypad.
In
a
Cartesian
format
the
setting
is the
y-axis value
.In
polar or
Smith
chart
format,
with
a
magnitude/phase
marker
,
a
real/imaginary
marker
,an
R+jX marker
,or
a G+jB
marker
,
the
setting
applies
to
the
rst
part
of the
complex data
pair.
(Fixed marker
response
values
are
always
uncoupled
in
the
two channels
.)
3.
T
o
set
the
auxiliary
response
value
of
a
xed
marker
when
you
are
viewing
a
polar
or
Smith
format,
press:
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FIXED
MKR
AUX
VALUE
and
turn the
front panel
knob or
enter a
value
from
the
front
panel
keypad.
This value
is
the
second
part
of
complex
data
pair
,
and
applies
to
a
magnitude/phase
marker
,
a real/imaginary
marker
,
an
R+jX
marker
,
or
a
G+jB
marker
.
(Fixed
marker
auxiliary
response values
are
always
uncoupled
in
the
two
channels
.)
Figure 2-8.
Example of a Fixed Reference Marker Using
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1REF=1FIXED MKR
2-12 Making Measurements