IoT Gateways
Netcom Products
IoT Modules
Pusr Cloud, a cloudplatform for the Internet of Things Zero programming comes with its own Internet of Things system.
+ Private Cloud project
Data localization
Business personalization
+ Public Cloud registered
80% functions are free
White-labeling for VIP
KingView-A SCADA Software With 25+ Years Of Development History Nice Graphics display to monitor and Control Production flow System.
+ Development History
Data Collection, Analysis &
+ respond within 1
Perfect Alarm Monitoring &
PCB Design —— ODM/EMS We provide one-stop turnkey design service to help customers with the delivery of an out-of-the-box hardware platform that is fully tested and ready to use upon delivery.
+ years of experience
11 high-speed SMT
10 million pcs daily
+ Private Cloud project
ISO9001 cert.
Intelligent MES
Support Center
RF test manual of WiFi Module USR-WIFI232-B2



This manual is the RF test manual of WiFi Module USR-WIFI232-B2,  which includes the test preparation and test procedure.


1.Test preparation

1.1.Hardware connection

Hardware connection diagram as follow:

 Hardware connection diagram of wifi module

Connect RF antenna and 5V power adapter to module. Connect B2’s RS232 interface and Ethernet interface to PC directly.


  • WinPcap.exe
  • QATool_Dbg.exe
  • Serial port software(Such as USR-WIFI232-Setup.exe to send AT commands)

2.Test procedure

Step 1: Install WinPcap.exe on PC firstly.

Step 2: Complete hardware connection in 1.1.Hardware connection and run the serial port software USR-WIFI232-Setup.exe.

Step 3: Enter AT command mode and send following AT commands.

 RF test manual- enter at command

  1. correct Com port and baud rate.(Default baud rate of B2 is 57600)

2.Click ‘Open Com’ to open Com port and software displays ‘Close Com’ means opening Com port successfully.

3.Click ‘+++a’ to enter AT command mode. Left bottom part of software- ’logs’ returns ‘a+ok’ means module entering AT command mode.

4.Send command ‘AT+EPHY’. Left bottom part of software- ’logs’ returns ‘AT+EPHY+OK’ means ‘AT+EPHY’ command configuring module successfully. 

5.Send command ‘AT+ATED’. Left bottom part of software- ’logs’ returns ‘AT+ATED+OK’ means ‘AT+ATED’ command configuring module successfully.

Now Ethernet interface of PC will display establishing connection successfully.

  RF test manual- error

Step 4: Run software QATool_Dbg.exe and finish following steps to enter software parameters interface.

software QATool_Dbg

USR-WIFI232-B2 RF test manual- device select

Choose ‘APSOC’ and click ‘OK’.

USR-WIFI232-B2 RF test manual- select the network adapter


Choose correct network adapter and click ‘OK’.

USR-WIFI232-B2 RF test manual- enter device mac address

Click ‘OK’ to continue.

Step 5: Enter following software interface and configure related parameters.

USR-WIFI232-B2 RF test manual-configure related parameters

1.Channel: Choose 2412MHz.

2.Mode: 11b/g/n option.

3.Rate: Rate level option.

4.Bandwidth option.

5.Choose TX0/RX0.

6.Repeat: Modify to 0.

7.Click ‘Start TX’ button to start RF test. 





Industrial loT Gateways Ranked First in China by Online Sales for Seven Consecutive Years **Data from China's Industrial IoT Gateways Market Research in 2023 by Frost & Sullivan
Be Honest, Do Best
Copyright © Jinan USR IOT Technology Limited All Rights Reserved. Lu ICPB No. 16015649-5/ Sitemap / Privacy Policy