Patent ID: 7426348

Claim:
An optical transceiver module connectable to a test apparatus, the transceiver comprising: a transmitter; a receiver; at least one test apparatus interface configured to receive from the test apparatus an input causing at least a first transceiver operating parameter to have a level substantially equal to a known value; at least one sensor configured to provide a measured level indicative of at least one transceiver operating parameter including a measured level of the first transceiver operating parameter; a data interface configured to provide a representative value of the measured level of the first transceiver operating parameter; and a controller configured to receive and convert the representative value to an actual value using a defined function having a plurality of coefficients having predetermined values, to provide the actual value to the test apparatus via the data interface, and configured to receive from the test apparatus via the data interface a plurality of replacement values for the plurality of coefficients determined by comparing the actual value to the known value.