How to use test LTE CAT-M with SIM7000 modules?



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Using the AT Command Tester tool,

  • Set the preferred mode to LTE CAT-M.
  • Get the supported LTE CAT-M bands
  • Get the current configured bands for LTE CAT-M in SIM7000 module.
  • Set the desired bands for LTE CAT-M operation.
  • Get the current system info.

Test LTE CAT-M in SIM7000 in Script Mode

Using the script mode in AT Command Tester tool, send batch of AT commands to configure LTE CAT-M operation in the SIM7000 module.

Try the script included in the AT Command Tester tool.

//Script: simcom_cat-m_setup
//The AT commands in this script are applicable for SIM7000 modules only
//Check SIMCOM Module AT Command documentaiton
//Configure for LTE CAT-M operation

//Get the preferred mode
AT+CMNB?

//Wait
WAIT=2

//Set preferred mode to LTE CAT-M
AT+CMNB=1

//Wait
WAIT=2

//Get the supported bands for LTE CAT-M and NB-IOT
AT+CBANDCFG=?

//Wait
WAIT=2

//Get the current bands for LTE CAT-M and NB-IOT
AT+CBANDCFG?

//Wait
WAIT=2

//Set LTE CAT-M bands
AT+CBANDCFG=”CAT-M”,2,3,4,12,13

//Wait
WAIT=2

//Get the system mode
AT+CPSI?

Output of the script file

AT+CMNB?
+CMNB: 1

OK
Preferred mode is CAT-M

AT+CMNB=1
OK
AT+CBANDCFG=?
+CBANDCFG: (CAT-M,NB-IOT),(2,3,4,12,13)

OK
Supported bands for CAT-M & NB-IoT are -2,3,4,12,13

AT+CBANDCFG?
+CBANDCFG: “CAT-M”,2,3,4,12,13
+CBANDCFG: “NB-IOT”,2,3,4,12,13

OK

Current CAT-M bands are -2,3,4,12,13
Current NB-IOT bands are -2,3,4,12,13

AT+CBANDCFG=”CAT-M”,2,3,4,12,13
OK
AT+CPSI?
+CPSI: LTE CAT-M1,Online,310-410,0x830B,79778833,497,EUTRAN-BAND12,5110,3,3,-12,-88,-58,10

OK
System Mode: LTE CAT-M1

Operation Mode: Online

Mobile Country Code: 310-410

Mobile Network Code: 0x830B

Location Area Code: 79778833

Cell ID: 497

RF Channel Number: EUTRAN-BAND12

C1 – Coefficient for base station selection: 5110

C2 – Coefficient for Cell re-selection: 3

TAC -Tracking Area Code: 3

SCellID – Service Cell ID: -12

PCellID – Physical Cell ID: -88

Frequency Band: -58

EARFN: 10

Keywords: Module , M2M , GPRS , 3G , through AT commands,