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I have an HP48 I would like to use, and I have dusted off my serial interface kit to connect it to my Windows XP computer. I tried the kermit floppy that comes with the kit and also Windows hyperterminal program.

I seem to lack the knowledge to connect the calculator to the computer. Is there someone who can guide me through the steps? I have made sure both hyperterminal and calculator have same baud, parity, stop bit, and ASCI. I have tried sending the clock program to the calculator, but the calculator will not connect when I push "recv" soft key in I/O mode.

Thanks in advance,
Scott Larson

I use the newest Hp connectivity kit conn4x to connect to my HP 50G via USB and to my HP 48G via RS232/USB-Adapter. Both work well and easy under XP. No guidance needed, practically automatic.

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I use the newest Hp connectivity kit conn4x to connect to my HP 50G via USB and to my HP 48G via RS232/USB-Adapter.

AFAIK the 48SX is not supported by conn4x.

[Scott said]

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I have made sure both hyperterminal and calculator have same baud, parity, stop bit, and ASCI.

You should also make sure that flow control is set to "None" in Hyperterminal. I have just tried connecting my 48SX to Hyperterminal (under Windows 2000, shouldn't be much different from XP for that purpose) and transferring a simple program back and forth -- it worked.

i.