User`s guide

Si47xx-EVB
110 Rev. 0.8
10. Debugging Guidelines for Si47xx EVB
Table 28. Debugging Guidelines for Si47xx EVB
Mode Symptom Solution
Configuration EVB not recognized
If the EVB is not recognized by the PC, remove the USB
connection and reconnect. Ensure the EVB is recognized by the
PC by right-clicking on My Computer and selecting
PropertiesHardwareDevice Manager. Under Human Interface
Devices, select each HID-Compliant Device“Details entry and
confirm one contains VID_10C4&PID_8244.
IF the EVB is not recognized by the GUI, but is recognized by the
PC, it is likely that another process has erroneously acquired the
handle to the EVB. Two processes known to cause this issue are
lxhidsve.exe and EAUSBKBD.exe. Terminate these processes in
the Task Manager.
If EVB is not recognized by the GUI, uninstall .NET framework 2.0
and reinstall from the installation CD or Microsoft’s website. The
GUI requires .NET Framework 2.0; however, multiple versions
such as 1.1, 2.0, and 3.0 may be installed simultaneously.
Initialization GUI crashes
The GUI may crash if a previous GUI .ini file was not removed
properly. Close the GUI, and delete all .ini files from the GUI
directory. Launch the GUI and try again.
If the GUI continues to crash, close the GUI, remove the GUI from
Control PanelAdd or Remove Programs, and then delete the GUI
directory. Launch the GUI and try again.
Receive Audio clicking noise
Disable "Update" under the "Control" menu (disables continuous
GUI/Si47xx updates).
Receive Excess interference/
Poor Reception
If using a laptop, ensure it is running off the battery and not plugged
in to the ac mains.
Alternatively, disconnect from the host PC and run from battery
power.
Move to a stronger signal environment.
Receive Seek/scan doesn’t find
expected channels
Adjust Seek SNR and Seek RSSI thresholds downwards.
Verify band and channel spacing for the region.
Receive Seek/scan stops on
noise
Adjust Seek SNR and Seek RSSI thresholds upwards.
If using a laptop, ensure it is running off the battery and not plugged
in to the ac mains.
FM/WB
Receive
Poor sensitivity from
FM test port
Remove ac coupling cap from the headphone input path to
eliminate possible sources of interference.