USR IOT USR-GM1, Manual

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USR-GPRS232-DTU USR MANUAL www.usr.so
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Jinan USR IOT Technology Limited tec@usr.cn
3.3 Hardware Introduction
3.3.1 USR-GM1
USR-GM1 is a patch-embedded GPRS module, our DTU products are based on this, peripheral circuits and so on
GM1 module details, please refer to the USR-GM1 hardware design manual.
USR-GM1 download link hardware design manual and package library: http://www.usr.cn/Download/134.html
Parameters Description
measurement 24*24*2.9mm
POW Power 3.6 ~ 4.2V; 3.8V standard values
Interface POWER/SIM/WORK/LINK/UART/AUDIO/RF
3.3.2 USR-GPRS232-7S2
USR-GPRS232-7S2 is a forward-compatible USR-GPRS232-7S (discontinued) embedded GPRS module, built-in
DC-DC converter circuit can support 9 ~ 18V power supply; after the demolition onboard DCDC converter circuit
inductance wheeling You can use DC5V plus buck diode (recommended model 1N4007) way directly to the VCAP pin
power supply to use DC5V power supply.
Users can also use the battery, after the removed board power inductors
。
USR-GPRS232-7S2 peripheral circuit requirements, hardware and other detailed information, refer to the
USR-GPRS232-7S2 hardware design manual.
USR-GPRS232-7S2 download link hardware design manual and package library:
http: //www.usr.cn/Download/141.html
Parameters Description
measurement 45*32*14mm
POW VCAP Power supply:3.6~4.2V
；
VCC power supply:9~18V
；
PORT POWER/WORK/LINK/UART/AUDIO
Antenna IPEX antenna connector fittings
3.3.3 USR-GPRS232-701
701-2 which use 5.5 * 2.1 round hole fittings supply, DB9 female data interface; 701-4 using 3.81-2 pluggable
terminal powered 3.81-3 pluggable terminal data interface.
The models made of aluminum alloy shell (user orders can not use the shell as long as the internal PCB board), the
screw hole location to install, suitable for installation in the chassis.
参数 详细描述
POW 9~18V ；
PORT POWER/RS232/RS485
Antenna SMA antenna connector inside the outer screw hole