Gnss Application Guide - SimCom SIM7000G User Manual

Accuracy (Open Sky): 2.5m (CEP50)
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TTFF (Open Sky) : Hot start <1s, Cold start<35s
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Receiver Type: 16-channel, C/A Code
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GPS L1 Frequency: 1575.42±1.023MHz
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GLONASS: 1597.5~1605.8 MHz
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BD: 1559.05~1563.14 MHz
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Update rate: Default 1 Hz
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GNSS data format: NMEA-0183
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GNSS Current consumption : 100mA (GSM/LTE CAT-M1Sleep ,in total on VBAT pins)
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GNSS antenna: Passive/Active antenna
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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.
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.
SIM7000 _Hardware Design _V1.00
Figure 29: Active antenna circuit
Figure 30: Passive antenna circuit (Default)
Smart Machine Smart Decision
2017-05-23