SI47XX-EVB Datasheet, PDF (91/164 Pages) Silicon Laboratories – Thank you for purchasing the Silicon Laboratories

7.2. Weather Band Main Window
The weather band main window will appear after initialization.
2
1
4
7
6
8
Si47xx-EVB
3
5
Figure 72. Weather Band Receiver Main Window
Table 22. Weather Band Receiver Main Window Descriptions
#
Name
Description
1
Tune/Seek
Tune Down (<), Tune Up (>) buttons execute a signal channel step (25 kHz step).
Seek function is not available in the WB Receiver mode.
The Frequency Display indicates the frequency in MHz. To change the frequency,
2
Frequency Slider Bar,
AFC Valid, Alert Tone
drag the pointer in the Frequency Slider Bar to the desired frequency.
AFC Rail indicator will be red if the tuned frequency is in an AFC rail state;
otherwise the indicator will be grey
The Alert Tone indicator will be green if the 1050 Hz Alert Tone is detected.
Select the Si473x output volume (0-63) by moving the slider bar pointer. Press the
3
Volume, Mute
Mute button on the mute radio. The button will be red if the radio is muted. Press
the Mute button again to remove the muting.
4
Auto Scan,
To Preset, Select Stn
Auto Scan, To Preset, Select Stn functions are not available in the WB Receiver
mode.
The RSSI indicator displays the RSSI of the signal in dBuV. The SNR indicator
5
Status
displays the SNR of the received signal in dB. The varactor is not available in the
WB Receiver mode.
Press the desired button to tune to the frequency displayed on the button. To store
a new value to the preset button, tune to the desired frequency and then press
6
Preset
and hold the desired button for 1.5 seconds. The button will then change to
indicate the stored frequency. This information is stored to a file and used the next
time the program is run.
7
Function
The Function buttons are used to boot up the device in a different mode.
8
SAME Event
Information
The SAME Event Information displays the SAME Event Information. Use the up/
down arrow key to view different events. (Si4707 only)
Rev. 0.8
91