AS3935 Standard Board
ams Demo Kit Manual, Confidential
Page 13
[v1-03] 2014-Jul-08
All data can be exported into a log file by pressing
“Export History”
.
It is possible to save a maximum of 190 lightning events in the memory. If the memory is full
a notice will be displayed on the LCD to read out and delete the history. Please apply then
“Read History”
,
“Export History”
and
“Sync RTC and Delete History”
.
7
Layer Stack of Lightning Sensor
Figure 5: Layer Stack of PCB
PCB Material: FR4 1mm for Active Tag. FR4 1.6mm for base station
2 layer board
Solder surface: chemical - tin
Width of copper: 35µm
Silk screen top/bottom: white
8
Layout Recommendations
Do not cross the SPI lines with the sensitive inputs of the antenna.
Below the 500 kHz LF antenna there should not be a GND plane.
Make sure that the GND plane is routed carefully.
Do not run SPI or any other interface on 500 kHz clock speed, in order to avoid cross-coupling.
