User`s guide
10
Example 3:
Swept mm-wave measurement with
arbitrary correction frequencies
The focus of this example is on using user flatness
correction to obtain flat power at the output of the
Agilent 83550 series mm-wave source modules. In
this case we will use non-sequential correction
frequencies in a swept 26.5 to 40 GHz measurement
with an 83554 source module.
It is time consuming to perform large quantities of
power meter measurements. To reduce this time, we
will select non-sequential correction frequencies in
order to target specific points or sections of the
measurement range that we will assume are more
sensitive to power variations. This will greatly
expedite setting up the user flatness correction
table. The amount of interpolated correction points
between non-sequential correction frequencies will
vary. This example uses the 437B to automatically
enter correction data into the array.
Note: Turn off the 8360 prior to connecting the
source module interface (SMI) cable, or damage
may result.
Configure the measurement system as shown in
figure 9a or 9b. When the 8360 is preset, the
following occurs:
• The source module’s frequency span is
displayed on the source.
• The 8360 leveling mode is automatically
changed from internal to "module leveling."
• The source module's maximum specified
power is set and displayed.
Figure 9. (a) mm-wave module hookup diagram with high power 8360 (83623B/24B),
(b) hookup diagram with standard 8360 using an Agilent 8349B amplifier
83623B/83624B
synthesized sweepers
Source module
interface
RF out
RF in
GPIB
GPIB
Test port
83554A
source module
83620B/83622B/
83640B/83642B
synthesized sweepers
(a)
(b)
8349B
microwave
amplifier
RF out
Test port
83554A
source module
Source module
interface
RF
out
R8486A
power sensor
R8486A
power sensor
RF in
RF in
DUT
DUT
437B
power meter
437B
power meter