Keysight N9915-90020 User’s Guide 301
IQ Analyzer (IQA) – Option 351
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
“File Management”
on page 817
(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 1.07374s, which is associated with a sample
rate of 125 MHz)).
——Sample Rate Sets the I/Q data sample rate value (default:
125 MHz, maximum: 125 MHz, couplings: 1.25 * IF
Bandwidth).
——
Sample Period Sets the 1/Sample Rate value (default: 8 ns,
maximum: 80 ms, couplings: Sample Rate).
——Capture Samples Sets the capture length using a sample
number (default: 12501, minimum: 1, maximum: 134217728,
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 302 and to Chapter
33, “File Management.”
——Refer to the File Count softkey on page 300.
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