I’m using a customized PCB(application - GPS Tracker).
Reference circuit took:- Quectel_MC60_Reference_Design_Rev.B_20160801.pdf
Hope GNSS part of MC60, not function. most of the time I got the response for
+CME ERROR: Operation failed
No data transmitting over GNSS_TXD(pin 22) and TXD_AUX(pin 25).
GSM part, GPRS and EPO file downloading work fine.
How do I diagnosis the exact problem?
Should I run the GNSS part standalone to verify the NMEA data like GPS module(Like NMEA data received in Quectel L80)?
This will be helpful
I got two or three times full NMEA data during my first-day testing.