HP 8753D - Page 128

In
a down
converter measurement
where the
N
NN
NN
NN
NN
NN
NN
NN
N
N
N
N
N
N
N
N
N
N
N
NN
NN
NN
NN
NN
NN
NN
N
N
N
N
DOWN
CONVERTER softkey
is selected,
the
notation
on
the
analyzer's
setup
diagram
indicates
that the
analyzer's source
frequency is
labeled
RF
,
connecting
to
the
mixer
RF port,
and the
analyzer's receiver
frequency is
labeled
IF
,
connecting
to
the
mixer
IF
port.
Because
the
RF
frequency
can
be
greater
or
less
than the
set LO
frequency in
this type
of
measurement,
you
can
select
either
N
N
N
N
N
N
N
N
N
N
NN
NN
NN
NN
NN
NN
N
RF
>
LO
or
N
N
N
N
N
N
N
N
N
N
NN
NN
NN
NN
NN
NN
N
RF
<
LO
.
Figure
3-1.
Down
Converter
P
ort
Connections
In
an
up
converter
measurement
where
the
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
NN
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
UP
CONVERTER
softkey
is
selected,
the
notation
on
the
setup
diagram
indicates
that
the analyzer's
source
frequency
is
labeled
IF
,
connecting
to
the
mixer
IF
port,
and
the
analyzer's
receiver
frequency
is
labeled
RF
,
connecting
to
the
mixer RF
port.
Because the
RF
frequency
will
always
be
greater
than
the
set
LO
frequency
in
this
type
of
measurement,
you
must select
only
N
N
N
N
N
N
NN
NN
NN
NN
N
N
N
N
N
N
N
N
N
RF
>
LO .
Figure 3-2. Up Converter Port Connections
Making Mixer Measurements 3-3