Abstract: An apparatus for maintaining a conductivity of electrical contacts of a test contactor for testing electronic devices comprises a rotary turret disk having a plurality of test stands operative to hold respective electronic devices, the electronic devices being rotatable by the rotary turret disk to a position of the test contactor to be contacted by the electrical contacts during testing. At least one contactor maintenance stand comprising a maintenance component is located between adjacent test stands on the rotary turret disk, wherein the electrical contacts of the test contactor are adapted to engage the maintenance component so as to automatically clean the electrical contacts and/or verify the conductivity thereof.

Abstract: An apparatus for maintaining a conductivity of electrical contacts of a test contactor for testing electronic devices comprises a rotary turret disk having a plurality of test stands operative to hold respective electronic devices, the electronic devices being rotatable by the rotary turret disk to a position of the test contactor to be contacted by the electrical contacts during testing. At least one contactor maintenance stand comprising a maintenance component is located between adjacent test stands on the rotary turret disk, wherein the electrical contacts of the test contactor are adapted to engage the maintenance component so as to automatically clean the electrical contacts and/or verify the conductivity thereof.

Abstract: A modulation driver for delivering an output modulation current for driving an optical source of an optical transmitter, the output modulation current comprises a first modulation current region characterised with a first temperature gradient and a second modulation current region characterised with a second temperature gradient, said first modulation current region and said second modulation region being for delivering modulation current at a first temperature range and a second temperature range, temperatures of said second temperature being higher than temperatures of said first temperature range, said second temperature gradient being larger than said first temperature gradient.