Shanghai SIMCom Wireless Solutions Limited SIM7000G ユーザーズマニュアル
Smart Machine Smart Decision
SIM7000 _Hardware Design _V1.00
2017-05-23
Accuracy (Open Sky): 2.5m (CEP50)
TTFF (Open Sky) : Hot start <1s, Cold start<35s
Receiver Type: 16-channel, C/A Code
GPS L1 Frequency: 1575.42±1.023MHz
GLONASS: 1597.5~1605.8 MHz
BD: 1559.05~1563.14 MHz
Update rate: Default 1 Hz
GNSS data format: NMEA-0183
GNSS Current consumption : 100mA (GSM/LTE CAT-M1Sleep ,in total on VBAT pins)
GNSS antenna: Passive/Active antenna
Note: If the antenna is active type, the power should be given by main board because there is no
power supply on the GPS antenna pad. If the antenna is passive, it is suggested that the external
LNA should be used.
power supply on the GPS antenna pad. If the antenna is passive, it is suggested that the external
LNA should be used.
4.3.2
GNSS Application Guide
Users can adopt an active antenna or a passive antenna to SIM7000. If using a passive antenna, an
external LNA is a must to get better performance. The following figures are the reference circuits.
external LNA is a must to get better performance. The following figures are the reference circuits.
Figure 29: Active antenna circuit
Figure 30: Passive antenna circuit (Default)