RF Testing on EG91


I cannot seem to find any documentation pertaining to RF testing on the EG91 module. I have found the application note for RF testing, however I am having difficulties getting my module to perform AT+QRFTEST commands, even after following the instructions linked here.

What I have tried without success

AT+CFUN=0 //Disable GSM protocol stack.
AT+QRFTEST=1,0,9,0,19,4100,0 //Transmit in FTM mode.

Running this sequence of commands that was outlined in the RF testing documentation, I ran into a CME ERROR: 323, which is not mentioned anywhere that I can find in the EC2x&EG9x&EG2x-G&EM05 Series AT Commands Manual


I am hoping that someone would be able to offer some insight as to what CME ERROR: 323 Is doing, and how it can possibly be solved on the EG91.

Hi Ozzie_Martin,
Please refer to the attachment, Thanks!
Quectel_EC2x&EGxx_FTM_AT_Commands_Manual_V1.0_Preliminary_20190404.pdf (323.3 KB)