72 Serial Communication and Command Set
EEPROM Status
Command: SE
SE returns the EEPROM status.
Response: T=t CE=ee
Format: t = 0, No Timeout Error; t = 1, Timeout Error
ee = Number of corrected errors in reading EEPROM data
Receiver Status
Command: SR
SR returns the current receiver status.
Response: V=vv S=ss T=t P=Off E=0
C
Format: vv = number of satellites, visible to the antenna, per almanac.
ss = relative signal strength (range: 0 to 255, nominal value = 15)
t = number of satellites being actively tracked (up to twelve)
P = Off, indicates that the time dilution of precision (TDOP)
calculation is not being performed. Returns 1.0 - 99.0, depending
on satellite geometry, when TDOP calculation is being performed.
A TDOP calculation is NOT performed if less than 3 satellites are
visible, OR if Position-Hold is active. E = 0, currently unused.
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