Patent ID: 7502974

Claim:
A number of machine-readable media having stored thereon sequences of instructions that, when executed by a machine, cause the machine to perform the actions of: pre-loading a plurality of sub-channel-specific timing sets into a set of pin electronics that is associated with a test channel of a circuit test system, the set of pin electronics comprising a plurality of locations for storing the sub-channel-specific timing sets, each location of which is associated with a unique identifier, wherein i) each of the sub-channel-specific timing sets provides information for calibrating signals transmitted over one of a plurality of sub-channels to which the test channel is selectively coupled, ii) the sub-channel-specific timing sets are loaded into said locations in accord with a map that maps ones of the unique identifiers to ones of the sub-channels based on combinations of channels, sub-channels and timing sets required by a test program, despite the test program requiring differing numbers of the sub-channel-specific timing sets for different ones of the sub-channels, and iii) the plurality of sub-channel-specific timing sets pre-loaded into the set of pin electronics is less than all of the sub-channel-specific timing sets that are supported by a set of calibration data stored for the test channel and sub-channels; and during execution of a test program, and subsequent to said pre-loading, coupling the test channel to different ones of the sub-channels, as instructed by the test program; and generating or receiving signals via the set of pin electronics, in accord with ones of the sub-channel-specific timing sets referenced by the test program.