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Using Sample-and-Sweep Correction Mode
You 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 significant. 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.
NETWORK ANALYZER
POWER SENSOR
/
pg617e
Figure 5-8. Sample-and-Sweep Mode for Power Meter Calibration
1. Calibrate and zero the power meter.
2. Connect the equipment as shown in Figure 5-8.
3. Select the HP 8753E as the system controller:
4. Set the power meter’s address:
/
......:.......:..
..:.::~:.~.:::::~,:.,,,~
,,:,
:::.;;+;:;
.,,:,,:.:.
z
5.
&led
the
appropriate
power
meter
by
pressing
~~~~:~~~~~~~~,until
the
come&,
model
number
is
displayed
(HP
436A
or
HP
438A/437).
.i./i.>
i.>>A....s
. . . . . . .
..i_................;
i_(...
..i
:::::>::::::::.:.>.:.
6. Set test port power to the approximate desired corrected power.
.,.;.,
..;
,:;
. .
_
. . . . . . . . . . . . . . . . . . .
.,.,
_
7. Press
Cal]
~~~~~
and enter the test port power level that you want at the input to
>>.i;.~~./.i
I
.::..:
:.:..i
/....;............~;....
your test device. For example, if you enter
l-loJ
@,
the display will read CAL POWER -10.
8. If you want the analyzer to make more than one power measurement at each frequency
data point, press:
. . . . . . .
.~~~~~~~~~~~
@
@,
(where n
=
the
number
of
d&red
iterations).
..:
:“:::,.:.:.:.:.:.:.:.:.:.:.:.:.::~.:;~;~:::::.:~:::::::.::::,,:,:,::
,,,,,
;,.~
,,.,.
:.:.~.:.~.:.::
//
:::>>:.:.:.:.:.:.
If you increase the number of readings, the power meter correction time will substantially
increase.
Optimizing Measurement Results 537