interfacing DSI NC 2400 tape reader/punch

Eric Moore mooreericnyc at
Wed Jul 15 22:28:25 CDT 2020

You can find the manual there. Check the dip switches in the punch for the
RS232 settings. You can also see the self test instructions.

You may need a null modem cable.

Here is a set of python scripts for reading/writing to your punch written
by NF6X.

Here is a video I made last week about my new punch and reader :). I really
wanted a DSI NC2400 but was not able to find an affordable one, nice find!

Do you have any paper tape to use with it? The punch may want oiled paper


On Wed, Jul 15, 2020, 21:38 Bill Degnan via cctalk <cctalk at>

> Is there a trick to archiving tapes to PC using Teraterm from a DSI NC 2400
> reader/punch?  Or is there a best software for this?  From the terminal I
> can ctrl+Q to cause the reader to initiate a read of a test tape but I
> can't capture the output of the tape through the modem port of the reader
> into the serial port of my PC.  I tried various things with settings.
> I was told it uses hardware flow control.  The reader is set correctly as
> far as I can tell.  I am using 2400/8/n/1 but I have tried other settings.
> I get no response from the terminal inbound at all.  I am using a USB to
> serial interface that I know works with an RS232 modem, but it may not work
> with the reader.  If so, I'd like to know if anyone has a
> similar experience.
> It may not be straight forward and I have to make a custom cable.  I will
> keep at it, report if I find the answers.
> Bill

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