In the manual sequence, you show 'P', 'd' & 't'. Although you indicate that you continue to hold the control key down, as there is no such thing as a lower case control character, it seems likely that the device sees '^P' followed by 'd' & 't'.

Try sending "^Pdt" (in the appropriate way), and see what happens?

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In reply to Re: Expect.pm CTRL Characters not being recognised by remote device by BrowserUk
in thread Expect.pm CTRL Characters not being recognised by remote device by set_uk

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