Description
Number
of
Bytes
Address
Offset
Data Range
0xBA
Temperature of top board 1 0xBB 0 to 150°C
Temperature of bottom
board
1 0xBC 0 to 150°C
Temperature when ADC
calibration last ran
1 0xBD 0 to 150°C
Change in temperature
since last ADC calibration
2
0xBE-
0xBF
-150 to 150°C
Elapsed seconds since last
ADC calibration
4
0xC0-
0xC3
0 to 2
32
-1
Reason for the last ADC
calibration
1 0xC4
0: No calibration
1: Power-on calibration performed
2: Manual calibration performed
3: Delta temperature calibration performed
4: Periodic calibration performed
Bitmask indicating current
status of ADC calibration
1 0xC5
These bit fields are not mutually exclusive. The con-
dition is True if the bit field value is 1.
b0: Calibration in progress
b1: Delta temperature limit has been met
b2: Periodic time elapsed limit has been met
Each status bit reflects the current sensor condition
but does not imply any calibration occurred.
µsec since top of the hour
(TOH)
4
0xC6-
0xC9
Number of microseconds elapsed since the top of
the hour
Pulse Per Second (PPS)
status
1 0xCA
0: Absent
1: Synchronizing
2: Locked
3: Error
Thermal status 1 0xCB
0: Ok
1: Thermal shutdown
Last shutdown tem-
perature
1 0xCC
Temperature of unit when thermal shutdown
occurred
Temperature of unit at
power up
1 0xCD Temperature of unit (bottom board) at power up
NMEA sentence 128
0xCE-
0x14D
GPRMC or GPGGA
Reserved 178
0x14E-
0x1FF
unused (null bytes)
The GPRMC sentence is terminated with CR/LF and padded to end of payload with null bytes.
60 VLP-32C User Manual
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