Using
Sample-and-Sweep
Correction
Mode
Y
ou
can
use
the
sample-and-sweep
mode
to
correct
the
analyzer output
power and
update
the
power
meter
correction
data
table
,
during
the initial
measurement sweep
. Because
the
analyzer
measures
the
actual
power
at
each
frequency
point during
the initial
sweep,
the initial
sweep
time
is
signicant.
However
,
in
this
mode of
operation the
analyzer does
not require
the
power
meter
for
subsequent
sweeps
.
Therefore
,
this
mode
sweeps considerably
faster than
the
continuous
correction
mode
.
Figure
5-8.
Sample-and-Sweep
Mode
for
P
ower
Meter
Calibration
1.
Calibrate
and
zero
the
power
meter
.
2.
Connect
the
equipment
as
shown
in
Figure
5-8
.
3.
Select
the
HP
8753D
as
the
system
controller:
4
LOCAL
5
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
NN
NN
NN
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
NN
NN
NN
N
SYSTEM
CONTROLLER
4.
Set
the
power
meter's address:
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
NN
NN
NN
NN
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
SET
ADDRESSES
N
N
N
N
N
N
N
N
NN
N
N
N
N
N
N
N
N
N
N
NN
N
N
N
N
N
N
N
N
N
N
N
NN
N
N
N
N
N
N
N
N
N
N
NN
N
N
N
N
N
N
N
N
N
N
N
N
ADDRESS: P MTR/HPIB
4
##
54
x1
5
5.
Select the appropriate power meter by pressing
NNNNN
NNNNNNNNNNNNNNNNNNNNNNNNN
NNNNNNNNNNNNNN
POWER MTR [
]
until the correct model
number is displayed (HP 436A or
HP 438A/437).
6. Set test port power to the
approximate desired corrected power
.
7.
Press
4
CAL
5
N
NN
NNNNNNNNNNNNNNNNNNNNNNNNN
NNNN
PWRMTR CAL
and enter the test port power level that you want at the input to
your
test device
.F
or example
, if you enter
4
0
10
5
4
x1
5
, the display will read
CAL POWER
0
10
.
8. If you want the analyzer to make more than one power measurement at each frequency
data point, press:
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
NUMBER OF READINGS
4
n
54
x1
5
, (where n = the number of desired iterations).
If you increase the number of readings, the power meter correction time will substantially
increase.
5-36 Optimizing Measurement Results
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