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Manual Curve Tracing

Manual Switch Box

This would be done similarly to RTI’s automated curve tracing with the exception that you are limited to 2 buses and must manually switch each pin. The manual switch box is limited to 96 pins and supports 2 buses.

To operate the switch box, you would connect the sources you are using to test the device via banana jacks and connect your test fixture to the switch box through a Yamaichi cable. Then you would use the switches on the switch box to connect each pin of the fixture to bus V-, bus V+, or neither.

Unlike the MultiTrace curve tracer, this is not automated so each switch corresponds to one pin and must be set to the desired position by hand. Besides the manual action, you can use this box to make curve tracing and IDDQ measurements the same way as a MultiTrace, provided the V- and V+ buses are driven using source measurement units (SMU).

The most common way to use the switch box is to evaluate the continuity of a device. You would connect the V+ node to a curve tracer and the V- node to the ground on the same tool.  A cable and DUT board are plugged into the switch box output and then the user can toggle switches from the far-left position (grounded pin) to the far-right position (tested pin) one by one for any pin they wish to examine.  To float a pin, the switch would be positioned in the middle and the banana jacks are largely unused in this configuration.  Overlay templates make it easier for users to find the right switch by replacing the generic switch legend with a customized one.

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