Simcom A7670sa 4g Cat 1 with Gsm Gps Module

Simcom A7670sa 4g Cat 1 with Gsm Gps Module

Preparation:

Board: BK-A7670
Serial tool: sscom32E.exe
Package list: 1Pcs

2. Overview

2.1 Module feature

• The A7670 series is the LTE Cat 1 module which supports wireless communication modes of LTE-TDD/LTE-FDD/G- SM/GPRS/EDGE. It supports maximum 10Mbps downlink rate and 5Mbps uplink rate.
• Control Via AT Command, Rich interfaces including UART, USB2.0
• Operation temperature:-40°C to +85 °C
• GNSS optional.

2.2 BOARD overview

CN2: Nano SIM card socket 1
CN3: Nano SIM card socket 2(Optional)
CN101: 7pin 2.54mm header interface
CN1: USB interface
D5: NET LIGHT indicator(Green)
U2: The power conversion chip
J1: LTE ANT
J2: GPS ANT(Optional)
J3: BT ANT(Optional)
TP1: 4.0V

2.3 PCBA dimension: 37*37mm.

3) Pin definition

3.2 How to use TXD and RXD (Default baud rate is 115200bps)

3.1 Pin definition of 6pin connector

4. How to test the BK-A7670 by AT command via UART
4.1 Installing LTE antenna, GPS antenna and NanoSIM card for BK-A7670 Board.
4.2 Feed power supply to VCC pin. (Note: VCC range is from 5.0V to 10V. 5.0V is recommended.)
4.3 GREEN LED indicator, Blink quickly shows un-registration network, Blink slowly shows registration successful. (Note: Should confirm whether correct NB-IoT SIM card is inserted)
 

4.4 Open serial software com32E and choose right serial number, Baud rate as below, please keep "Send New" selected:

5. How to test the BK-A7670 by AT command via USB

5.1 Remove all connection on CN101 7pin connector, Power up the A7670 Breakout board only via USB, Install SIMCom_USB_Drivers A7670.rar driver following the computer indication. The computer will show as belows, it means that the driver is installed correctly.

5.2 Select AT Port 9001, 115200bps and SendNew, you can repeat all command in Item4.4.

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