Keysight N9927-90001 User’s Guide 263
IQ Analyzer (IQA) – Option 351 (CPU2 Only)
I/Q Analyzer (IQA) Mode Settings
If you do not have an external device connected and attempt to
save your data, a warning message is displayed: "Warning:
Only an external storage device can be used in
multiple file mode."
Then select:
——Internal
(default) Selects the internal memory of the
FieldFox as the storage location for all data files. Internal
is only available when File Count is set to Single.
——SD Card
Selects the external SD card slot as the storage
location for all data files.
——USB
Selects an external USB storage device as the
storage location for all data files.
——Filename
Opens a file manager Labeler menu that enables you
to customize your data filenames. Refer to Chapter 31, “File
Management.” (default: IQDataFile).
——Back
Returns to the previous softkey menu.
— Capture Settings
then choose one of the following:
——Capture Time
Sets the length of the I/Q trace capture time
(default: 100
μs, range: 80 ns to dynamic (i.e., Maximum
capture time is 335.544 ms, which is associated with a sample
rate of 12.5 MHz)).
——Sample Rate
Sets the I/Q data sample rate value (default:
12.5 MHz, maximum: 12.5 MHz, couplings: 1.25 * IF
Bandwidth).
——Sample Period
Sets the 1/Sample Rate value (default: 80 ns,
maximum: 80 ms, couplings: Sample Rate).
——Capture Samples
Sets the capture length using a sample
number (default: 1251, minimum: 1, maximum: 4194304,
couplings: Capture Time).
——Back
Returns to the previous softkey menu.
— Start
Starts the I/Q data capture and stores the data into a default
file and location (internal). Filenames and storage location can be
customized. See also, the “Example:” on page 265 and to Chapter
31, “File Management.”
——Refer to the File Count softkey on page 262.
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