Finisar AN-2030 specifications N i s a r

AN-2030: Digital Diagnostic Monitoring Interface for Optical Transceivers F i n i s a r

1Calibration Constants

2		TABLE 3.15: Calibration constants for External Calibration Option
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4				(2 Wire Address A2h)
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	Address	# Bytes	Name	Description
	56-59	4	Rx_PWR(4)	Single precision floating point calibration data - Rx optical power. Bit
				7 of byte 56 is MSB. Bit 0 of byte 59 is LSB. Rx_PWR(4) is set to
				zero for “internally calibrated” devices.
	60-63	4	Rx_PWR(3)	Single precision floating point calibration data - Rx optical power.
				Bit 7 of byte 60 is MSB. Bit 0 of byte 63 is LSB. Rx_PWR(3) is set to
				zero for “internally calibrated” devices.
	64-67	4	Rx_PWR(2)	Single precision floating point calibration data, Rx optical power.
				Bit 7 of byte 64 is MSB, bit 0 of byte 67 is LSB. Rx_PWR(2) is set to
				zero for “internally calibrated” devices.
	68-71	4	Rx_PWR(1)	Single precision floating point calibration data, Rx optical power. Bit 7
				of byte 68 is MSB, bit 0 of byte 71 is LSB. Rx_PWR(1) is set to 1 for
				“internally calibrated” devices.
	72-75	4	Rx_PWR(0)	Single precision floating point calibration data, Rx optical power. Bit 7
				of byte 72 is MSB, bit 0 of byte 75 is LSB. Rx_PWR(0) is set to zero
				for “internally calibrated” devices.
	76-77	2	Tx_I(Slope)	Fixed decimal (unsigned) calibration data, laser bias current. Bit 7 of
				byte 76 is MSB, bit 0 of byte 77 is LSB. Tx_I(Slope) is set to 1 for
				“internally calibrated” devices.
	78-79	2	Tx_I(Offset)	Fixed decimal (signed two’s complement) calibration data, laser bias
				current. Bit 7 of byte 78 is MSB, bit 0 of byte 79 is LSB. Tx_I(Offset)
				is set to zero for “internally calibrated” devices.
	80-81	2	Tx_PWR(Slope)	Fixed decimal (unsigned) calibration data, transmitter coupled output
				power. Bit 7 of byte 80 is MSB, bit 0 of byte 81 is LSB.
				Tx_PWR(Slope) is set to 1 for “internally calibrated” devices.
	82-83	2	Tx_PWR(Offset)	Fixed decimal (signed two’s complement) calibration data,
				transmitter coupled output power. Bit 7 of byte 82 is MSB, bit 0 of
				byte 83 is LSB. Tx_PWR(Offset) is set to zero for “internally
				calibrated” devices.
	84-85	2	T (Slope)	Fixed decimal (unsigned) calibration data, internal module
				temperature. Bit 7 of byte 84 is MSB, bit 0 of byte 85 is LSB.
				T(Slope) is set to 1 for “internally calibrated” devices.
	86-87	2	T (Offset)	Fixed decimal (signed two’s complement) calibration data, internal
				module temperature. Bit 7 of byte 86 is MSB, bit 0 of byte 87 is LSB.
				T(Offset) is set to zero for “internally calibrated” devices.
	88-89	2	V (Slope)	Fixed decimal (unsigned) calibration data, internal module supply
				voltage. Bit 7 of byte 88 is MSB, bit 0 of byte 89 is LSB. V(Slope) is
				set to 1 for “internally calibrated” devices.
	90-91	2	V (Offset)	Fixed decimal (signed two’s complement) calibration data, internal
				module supply voltage. Bit 7 of byte 90 is MSB. Bit 0 of byte 91 is
				LSB. V(Offset) is set to zero for “internally calibrated” devices.
	92-4	3	Reserved	Reserved
6	95	1	Checksum	Byte 95 contains the low order 8 bits of the sum of bytes 0 – 94.
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9/26/02 Revision D Page 21