We are experimenting with the SPI interface to obtain (for production record keeping) the LOT ID (1 & 2) and gyro serial number.
We have validated the SPI interface by reading out the gyro P/N (returns 16364) and SUPPLY_OUT (returns 5.055 Volts, input measured at the board level is 5.032 Volts.) We normally use the burst mode to read the sensor data, but are using a special routine to read single parameters and wish to validate this routine further.
Reading LOT_ID1, LOT_ID2, and SERIAL_NUM we get:
LOT_ID1 = 0d1809, 0x0711
LOT_ID2 = 0d4882, 0x1312
SERNO = 9305
The documentation states (p16 & Table 32) that LOT_ID is an INT32. Combining the 2 received numbers produces an incredible decimal value (118559506). What does this number represent? Is it actually broken down into sub-fields that then pack into the INT32. IF so, what is the structure? We can simply record the values but would like a better understanding of their meaning.
For the lot ID numbers and serial number, are these reasonable numbers? Please advise.