★ Automatic or Manual Antennas Switching Capability
★ Gain : 0～30dB step adjustable , 1dB step （Optional）★ Show information of GPS/Beidou in time
★ Antenna status monitoring and warning
★ Output Ports status monitoring and alarm function (Optional)
【Antenna selection description】
Powered hardware, the software began to calculate the signal strength of antenna 1and antenna 2,after comparing the intensity of the two input signals automatically select the high signal intensity of the antenna input. When two input antennas strength less than 34dB, according to the number of switches and the switching frequency of switching continues until the switching frequency greater than 140 times. When started with a good choice of antenna, the system continues to signal detection, when the signal strength is too low or the antenna failure, the automatic starting antenna selection logic. Holding the antenna 1 priority, it can delay the service life of the equipment.
Switching times: Each antenna switch once switches the number of plus 1 time.Switching frequency : Switch the number of times less than ten times, then switch once every minute. Switching times greater than 10 times less than 140 times, every ten minutes to switch once .