Do you have a reader run relay board? Bill On Tue, Jun 3, 2025 at 1:03 AM Mike Katz via cctalk <[email protected]> wrote:
> I was given an ASR-33 complete with stand, reader & punch. > > This ASR-33 has been modified for RS-232 though a blue perfboard mounted > in the connection enclosure (under the cover place where the dialer > would be on the right side). > > It has a DB25 ribbon cable coming off of this board. The perfboard does > not have a label on it that I can find. > > The ASR-33 also has a 3 x 5 conductor rectangular connector coming out > of the rear of the unit with 6 female contacts installed. > > I was able to connect the ARS-33 to a VT-330+ at 110B 8-N-2 and send and > receive on the teletype. > > The punch seems to work as well. > > The reader will "chatter" then the reader is put in the start position > and the tape out sensor is pressed but the sprocket does not advance and > the reader pins to not move. > > Questions: > > 1. Why the reader is not advancing and the pins are not activating? > Could this be a read enable contact not being in the active position? > 2. What are the pin outs of the RS-232 DB-25. Other than TX, RX and GND > 3. What are the pin outs of the 3 x 5 rectangular connector. I think > this is the current loop and other control signals. > > Does any one of the items below for sale or have a 3D model I can print: > > 1. Roll Paper spindle (the spindle that the roll paper spins on) > 2. Paper Tape Punch Spindle (the spindle that the paper tape spins on) > 3. Paper Tape Chad feed tube > 4. Paper Tape Chad Box > > I will be connecting this to either a PiDP-8/I or a PDP-8/E for now and > eventually a PDP-8/L > > Thank you, > > Mike >
