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Real-Time I/Q Baseband Generator User’s and Programming Guide
Using Functions
HP ESG Family Signal Generators
Selecting Stored Files
Options UN8 and 202
Applying a User-Defined FIR Filter
1. Preset the signal generator to normal preset conditions.
2. Press the front panel
Mode
key.
3. In the softkey menu, press
Real Time I/Q BaseBand
(if it appears) >
Custom
Other Formats:
Real Time I/Q BaseBand
(if it appears) >
TDMA
>
desired format
>
More (1 of 2)
>
Modify Standard
4. To display the catalog of FIR files, press
Filter
>
Select
>
User FIR
. The following
illustration shows an example of the catalog.
In this example there are two FIR files listed: NEWFIR1, and NEWFIR2.
5. Press the arrow keys until the desired filter is highlighted. The front panel knob or the
GoTo Row
softkey can also be used to highlight filters. NEWFIR2 is highlighted in the
above example.
6. Press
Select File
. The highlighted filter is now selected for use in your custom
modulation state.
The name of the selected filter appears below the
Select File
softkey (at the top and
right). In the Filter field, near the center of the display,
User FIR
is shown to indicate
that a user-defined FIR filter has been selected.
Once you have set the other modulation parameters to your satisfaction, turn on the
modulation and the RF output and your user-defined filter is in use.
NOTE
The actual oversample ratio during modulation is automatically selected by
the instrument. A value between 4 and 16 is chosen dependent on the symbol
rate, the number of bits per symbol of the modulation type, and the number of
symbols.
Summary of Contents for ESG series
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