RoyalTek Confidential
10
REB-1315S5 Operational Manual
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RF_IN
Connecting to the antenna has to be routed on the PCB. The transmission line
must to be control impedance from RF_IN pin to the antenna or antenna
connector of your choice. (Impedance 50Ω)
Can be used for active antennas or passive antenna.
Active Antenna Gain Selection: 15 ~ 20dB
We recommend using active antennas, because the active antenna actual test better than the
passive antenna..
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VCC_RF_OUT
This pin can provide maximum power
30mA@3.3V
for active antenna.
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1PPS (TIMEMARK)
This pin provides one pulse-per-second output from the board, which is synchronized to
GPS time. Need firmware supported. If don’t used, can open.
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VRTC_3V3 (Backup battery)
This is the battery backup input that powers supply the Hibernate mode when main
power is removed. It’s will keep the Warm start and Hot start function work well.
Typical current draw is
50uA.
The supply voltage should be between
2.2V and 3.3V.