Calibration substrate
First Claim
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1. A calibration substrate for use in calibrating/deskewing drive channels of a machine, said machine having a plurality of first drive channels and a compare channel, said calibration substrate comprising:
- a plurality of first input terminals disposed to receive input from said plurality of first drive channels;
a first buffer, wherein said first input terminals are electrically connected to an input of said first buffer;
a first detector configured to receive as input an output of said first buffer; and
a first output terminal electrically connected to an output of said first detector and configured to connect electrically with said compare channel.
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Abstract
A calibration substrate includes a plurality of input terminals, a detector coupled to the input terminals, and an output terminal. The calibration substrate can be used for calibrating and/or deskewing communications channels.
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Citations
18 Claims
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1. A calibration substrate for use in calibrating/deskewing drive channels of a machine, said machine having a plurality of first drive channels and a compare channel, said calibration substrate comprising:
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a plurality of first input terminals disposed to receive input from said plurality of first drive channels; a first buffer, wherein said first input terminals are electrically connected to an input of said first buffer; a first detector configured to receive as input an output of said first buffer; and a first output terminal electrically connected to an output of said first detector and configured to connect electrically with said compare channel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A calibration substrate for use in calibrating/deskewing a tester with a probe card assembly, said probe card assembly having a plurality of probes, said calibration substrate comprising:
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a substrate; a plurality of input terminals disposed on a same surface of said substrate and arranged in position to be contacted by said plurality of probes; a summing node, wherein each of said input terminals are electrically connected to said summing node; a detector having an input and an output, said input connected to said summing junction, said detector configured to detect a composite pulse feature of a composite pulse created at said summing junction; and an output terminal disposed on said surface and electrically connected to said output of said detector and arranged in position to be contaced by a probe of said probe card assembly. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification