User Manual

Smart Machine Smart Decision

SIM7600A_User Manual_V1.01 2017-10-10

LNA should apply the following requirements as table 28. LNA is also suggested to put near the

passive antenna.

Table 27: LNA requirements

Parameter Min Max Unit

Vdd 1.5 3.3 V

Idd 3 mA

LNA_EN 1.3 V

Gain 14 17 dB

VSWR 2

GNSS can be used by NMEA port. User can select NMEA as output through UART or USB.

NMEA sentences are automatic and no command is provided. NMEA sentences include GSV, GGA,

RMC, GSA, and VTG. Before using GNSS, user should configure SIM7600A in proper operating

mode by AT command. Please refer to related document for details. SIM7600A can also get

position location information through AT directly.

Note: GNSS is closed by default, it could be started by AT+CGPS. The AT command has two

parameters, the first is on/off, and the second is GNSS mode. Default mode is standalone mode.

AGPS mode needs more support from the mobile telecommunication network. Please refer to

document [24] for more details.