3980xpi Users Manual - Data I/O Corporation

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Additional Information
The Device insertion error message can only be caused by a failure of the
continuity check. The continuity check is activated prior to device programming.
During the continuity check, the programmer applies low level current to each pin
on the device to determine whether it is making good contact with the
programming fixture.
After you disable the continuity test, we suggest you load a device rather than
program one. A load operation is less apt to harm the device because no
programming voltages are applied. Attempts to program a device that is not
making proper contact may result in overcurrent or programming error which may
damage the devices.
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