Finisar AN-2030 - Manual (Page 21)

AN-2030: Digital Diagnostic Monitoring Interface for Optical Transceivers
F i n i s a r
9/26/02 Revision D Page 21
Calibration Constants 1
2
TABLE 3.15: Calibration constants for External Calibration Option 3
(2 Wire Address A2h) 4
5
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
95 1
Checksum Byte 95 contains the low order 8 bits of the sum of bytes 0 – 94.
6
7
8