User's Manual

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User Manual 2012/06/28
Figure 29: GNSS active antenna connection schematic
8.2.2 Antenna detection
For passive antenna, the command AT+KGNSSAD can be used to perform antenna detection.
For active antenna, a GPIO can be used to detect the antenna power consumption. The customer needs to fit
the current sense circuitry on its own board and match the detection level to the VGPIO level.
8.3 RADIO LAYOUT DESIGN
Radio layout guidelines are defined in document [3]