The documentation does not explain much about the Test Modes.
Packet Type: 810 PMTK_TEST_ALL
Bit1 TEST_ACQ
Bit2 TEST_BITSYNC
Bit3 TEST_SIGNAL
Are these all dependent on having satellite reception? i.e. is there any self-test capability?
Antenna Engineer at Antenova Yu Kai is an antenna expert with over 10 years of experience in the design and testing of antennas. He has experience helping customers with certification testing, combined with his knowledge of RF measurement procedures.
Senior Antenna Engineer at Antenova Raymond has a wealth of experience in RF and antennas across many industry sectors. He has over 20 years of experience in electronics design and manufacturing.