HP 8753D - Page 131

P
ower
Meter
Calibration
Mixer
transmission
measurements
are
generally
congured
as
follows:
measured
output
power
(W
atts)
/
set
input
power (W
atts)
OR
measured
output
power
(dBm)
0
set
input
power
(dBm)
F
or
this
reason,
the
set
input
power
must be
accurately controlled
in order
to
ensure
measurement
accuracy
.
The
amplitude
variation
of
the
analyzer
is
specied
6 1
dB over
any given
source
frequency
.
This
may
give
a
maximum
2
dB
error
for a
mixer transmission
test setup:
6 1
dB
for
the
source
over
the
IF
range
during
measurement
and
6
1dB
over the
RF range
during measurement.
Higher
measurement
accuracy
may
be obtained
through the
use of
power meter
calibration.
Y
ou
can
use
power meter
calibration to
correct for
power osets
,
losses
,
and
atness
variations
occurring
between
the
analyzer
source and
the input
to the
mixer under
test.
3-6 Making Mixer Measurements