User`s guide

108 Agilent X-Series Signal Generators User’s Guide
Optimizing Performance
Using Internal Channel Correction (N5172B/82B Only)
Figure 5-18 Internal Channel Correction Softkeys
SCPI Commands:
[:SOURce]:DM:INTernal:CHANnel:CORRection[:STATe] ON|OFF|1|0
[:SOURce]:DM:INTernal:CHANnel:CORRection[:STATe]?
:CALibration:BBG:CHANnel
:MEMory:LOAD:CHANnel <"filename">
:MEMory:STORe:CHANnel <"filename">
For details on each key, use key help as described on page 44.
I/Q > More
Toggles on or off the application of the
internal baseband generator RF and
baseband magnitude and phase
corrections across the 160MHz
baseband bandwidth at the current RF
frequency.
When this feature is on, arbitrary
frequency switching while the
baseband is on will take up to an
additional 3.3ms (typical) to 6.8ms the
first time that frequency is specified.
After that, switching to that frequency
will take up to an additional 1.3ms.
Up to 1024 unique frequencies can be
cached before the oldest cache will be
forgotten. If a frequency sweep is
activated, then the calculation and
caching will occur up front for the first
1024 unique frequencies, and all
further unique frequencies will have
the characteristics of arbitrary
frequency switching.
If the I/Q Correction Optimized Path is
set to Ext I/Q Output then only the
baseband corrections will be applied
and the frequency switching speed will
be unaffected.
This correction will be convolved with
the ACP Internal I/Q Channel
Optimization filter and the Equalization
filter if they are active. The resulting
filter will be truncated to 256 taps.
NOTE: The Enhanced Factory
Calibration must be executed once
before the Factory correction type can
be turned on. See Perform Enhanced
Factory Calibration.
Provides additional correction to the
DUT.
Specify the start and stop frequencies,
configure the power meter, then
execute the calibration.
Displays a menu that controls the
calibration and application of the
internal baseband generator RF and
baseband magnitude and phase
corrections across the entire
baseband bandwidth.
Toggles on or off the application
of Factory or User I/Q channel
correction.
Factory optimizes the
performance to the RF output
connector.
User extends the correction to
the DUT.
NOTE: The Enhanced Factory
Calibration must be executed
once before the Factory
correction type can be turned on.
See Perform Enhanced Factory
Calibration.
To perform the Factory
calibration, press Utility > More >
Service > I/Q Int Channel Correction
Calibrations.
Select either Factory Calibration or
Enhanced Factory Calibration.
Follow the instructions on the
signal generator display.