RoyalTek meb-1000 用户手册
8
MEB-1000 User Manual
capacitor(10uF and 1uF).It can reduce the Noise from power supply and
increase power stability.
increase power stability.
(5) Active antenna bias voltage:
The Vcc_RF_OUT pin(pin 20) is provide voltage 2.85V. If you use active
antenna, you can connect this pin to V_ANT_IN pin (pin 19) to provide bias
voltage of active antenna. The bias voltage will be through GPS_RF_IN pin
to provide active antenna bias voltage from Vcc_RF_OUT pin.
If your bias voltage of active antenna isn’t 2.85V, you can input bias voltage
to V_ANT_IN pin (pin 19).And input bias voltage of you need. The input bias
voltage will through GPS_RF_IN pin to provide active antenna bias voltage
from V_ANT_IN pin.
PS:
(1) The maximum power consumption of active antenna is about 100mW.
(2) Suggest input gain > 20dB，and NF < 1.5 dB 。
antenna, you can connect this pin to V_ANT_IN pin (pin 19) to provide bias
voltage of active antenna. The bias voltage will be through GPS_RF_IN pin
to provide active antenna bias voltage from Vcc_RF_OUT pin.
If your bias voltage of active antenna isn’t 2.85V, you can input bias voltage
to V_ANT_IN pin (pin 19).And input bias voltage of you need. The input bias
voltage will through GPS_RF_IN pin to provide active antenna bias voltage
from V_ANT_IN pin.
PS:
(1) The maximum power consumption of active antenna is about 100mW.
(2) Suggest input gain > 20dB，and NF < 1.5 dB 。
(6) GPIO:
The GPIO pin is recommended to connect to serial resistance(220Ω),if use
the GPIO function.
If no use GPIO function, it don’t connect anything.
the GPIO function.
If no use GPIO function, it don’t connect anything.