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Si47xx-EVB
8.2. AM Receiver Main Window
The AM receiver main window will appear after initialization.
Figure 78. AM Receiver Window
Table 25. AM Receiver Window Descriptions
#
Name
Description
1
Tune/Seek Tune Down (<), Tune Up (>) buttons execute a single channel step according to the channel
spacing setting. The channel spacing setting can be set in the property window.
Seek down (<<), Seek Up (>>) buttons execute a seek up or down to the next received FM
signal meeting or exceeding the seek settings within the selected band. The seek setting RSSI
and SNR threshold can be set in the property window.
2
3
Frequency
Slider
Bar, AFC,
Valid
Volume,
Mute
The Frequency Display indicates the frequency in kHz. To change the Frequency, 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 Valid indicator will be green if the AM frequency meets the RSSI and SNR seek settings.
Select the Si473x output volume (0–63) by moving the slider bar pointer. Press the Mute button
to mute the radio. If the radio is muted the button will be red. Press the Mute button again to
remove the muting.
4
Auto Scan The Auto Scan button will find all the stations with an RSSI and SNR above the seek settings in
the property window. After the scan is completed, the number of stations found will be displayed
and each station will be available in the drop down box. Also, a red indicator mark will be dis-
played on the Frequency Slider Bar (2) for each station. The "To Presets" Button will program the
preset buttons (5) with the 12 strongest stations.
5
98
Presets
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 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.
Rev. 0.8
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