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Why does the FPGA Configuration Window appear upon boot up?

FPGA Configuration Window (N9010B, N9020B, N9030B, N9040B)

FPGA Configuration Window (N9010A, N9020A, N9030A)

The window is displayed because one of the FPGAs (Field Programmable Gate Arrays) inside the instrument does not have enough capacity to contain the FPGA images for both the Option FS2, Enhanced Sweep Speed, and Option TDS, Time Domain Scan (TDS used with EMC Application N6141A/C). The instrument software version must be A.18.24 or later to see this window.

Notice near the bottom of the window, the Currently Loaded FPGA is displayed, and for this example, the Time Domain Scan is loaded. Do not confuse this with the Selected FPGA description that appears in the box, since the Selected FPGA entry can be used to choose what FPGA is about to be loaded, if you decide to load the other FPGA selection.

At this point you need to decide whether you want the instrument to replace the FPGA image, or continue using the currently loaded image. In the example windows, you must choose whether to select and load the Enhanced Fast Sweep FPGA, so you can use the option FS2 capability; or you want to continue using the currently installed Time Domain Scan to make EMI measurements using the N6141A/C measurement application.

Note: If the Time Domain Scan FPGA is loaded, the instrument sweep speed will be the Option FS1 “Fast Sweep capability”, if a license for FS1 is installed. This means that although option FS2, Enhanced sweep speed is not available in the EMI measurement, the instrument will use the FS1 sweep speed which has always been the default in the past when option FS1 is licensed.

Notice the Load FPGA button in the window is grayed out until you choose to load the other FPGA image.  If you want to replace the FPGA image, under FPGA Load Preferences, choose the Enhanced Sweep Speed selection (for this example), then click Load FPGA. An update FPGA status window will appear, and it will take approximately 13 minutes for the instrument to perform this task. It is very important the instrument power is not interrupted during this process!

Notice under FPGA Load Preference, you can choose to be prompted with the window shown above, each time the instrument boots up (default setting); or you can choose to not display the window by selecting which FPGA will be present when the instrument boots up.

Note: The FPGA image will not be reloaded at each reboot. Once you load an FPGA image, it will remain until you change it.

To make the window go away, press the FREQ key on the front panel.  To make the window reappear, press System, Power On, FPGA Configuration

Learn more about FPGA Design / Development Solution
 

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