Ocean Optics EMBED2000+ - Manual (Page 10)

EMBED2000+ Data Sheet
10 029-20000-005-05-201305
EEPROM SPI Read
The EMBED2000+ contains a separate 4kb SPI EEPROM that is populated with spectrometer
calibration data. Below is an example for a single byte read. Please see the device datasheet for
complete timing and operation information.
Starting at address 0x000, the calibration data is parsed as follows:
COEF_SERIAL 0x000 – 0x00F
COEF_ICEP 0x010 – 0x01F
COEF_C1 0x020 – 0x02F
COEF_C2 0x030 – 0x03F
COEF_C3 0x040 – 0x04F
COEF_STRAY 0x050 – 0x05F
COEF_NL0 0x060 – 0x06F
COEF_NL1 0x070 – 0x07F
COEF_NL2 0x080 – 0x08F
COEF_NL3 0x090 – 0x09F
COEF_NL4 0x0A0 – 0x0AF
COEF_NL5 0x0B0 – 0x0BF
COEF_NL6 0x0C0 – 0x0CF
COEF_NL7 0x0D0 – 0x0DF
COEF_NLORDER 0x0E0 – 0x0EF
COEF_CONFIG1 0x0F0 – 0x0FF
COEF_CONFIG2 0x100 – 0x10F
COEF_OFFSET 0x110 – 0x11F
COEF_SERIAL contains ASCII bytes of the spectrometer serial number.
COEF_ICEP through COEF_C3 are stored in ASCII format and are described using scientific
notation. For example, -0.00000000000000123 is interpreted as (-1.23e-15) and is stored as (2D 31
2E 32 33 65 2D 31 35). ICEP is the x-axis intercept, through C3 as the third order coefficient to
convert discrete pixels into wavelengths.
COEF_NL0 – 7 are coefficients for a 7 th order polynomial to correct for detector non-linearity.
COEF_CONFIG1 and CONFIG2 are set by Ocean Optics and are for manufacturing use only.