Asia Pacific and Oceania. How does HP install software and gather data? All pen plotters have been discontinued. Another really good resource is the Usenet archive , which has lots of posts from the ‘s and ‘s from scientists and computer professionals struggling to get their plotters connected. To test all of this, I wrote an AWK program that creates a HPGL script that generates a plot of force against speed by drawing little squares with varying speed and force.

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That would definitely be an interesting project to work on.

Getting a HP 7550A plotter to work under Linux

Normally when you connect two devices over a serial line, they should only speak when the other party is ready to receive. The computer starts sending again, keeping the plotter fed with data just in time, which is necessary because it only has a 9Kb or so task buffer. Next I tweaked the AWK script above to plot force and speed using the range of the plotter itself.

By continuing to browse, you are agreeing to our use of cookies as explained in our Privacy Policy. My computer uses the standard 9-pin connector for its serial port.

Furthermore, installing the wrong Graphiics drivers can make these problems even worse. If you have any specific problems, try searching for a on HP’s websiteit has quite some information about connection and paper errors. Paper regular and glossytransparency film, double-matte polyester film.


Jay Geater is the President and CEO of Solvusoft Corporation, a global software gp focused on providing innovative utility software. I can’t believe so, because both parameters can also be set on the plotter, and there the ranges are only 1—8 anfor force, and 10—80 infor speed in steps of five.

Update 19 August So this page is now inactive. After a week or so, whatever’s left goes to a trader. However, speeds lower than 10 do have meaning, because at the start of the plot, there is a giant difference between VS 1 and VS 2.

Large tasks need to be sent piecemeal, or the plotter will complain about buffer overflow errors almost immediately. Check the status of this port as follows:.

Liquid-ink drafting pen carousel. Asia Pacific and Oceania. I chose to use the parity bit for basic error correction.

HP Computer Museum

They’re on the back and there are ggaphics of them:. I found that the A automatically listens to all its inputs, so you can just send data to it without having to make it listen specifically.

The Electronics faculty of Delft University of Technology has a strange way to get rid of their obsolete equipment. It’s just catting a file to the serial port, what could be easier? The image of the Cadillac was created by tracing a photograph with potrace open source tracing softwarethen exporting the. When plotting the squares, you see that after a certain point the plotter just doesn’t go any faster.


Additional fiber-tip pen carousel. You can change the settings for serial communications on the LCD screen by pressing enter and next page. If you think you set it up correctly and it didn’t work, try checking all the settings and rebooting a few times.

That did the trick for me. There are some good resources online on how to convert your plotter.

If this went well, the computer and the plotter are now in sync and we can try catting a test file to the serial port. How is the Gold Competency Level Attained?

Hewlett-Packard A Graphics Plotter | | Computer History Museum

Europe, Middle East, Africa. Okay, so we have the plotter up and running, now what can we do with it? The HP-IB interface is obsolete, it’s a proprietary HP communication protocol that was used in labs a lot, but is now defunct. The two connectors on either end of the cable have to be cross-wired graphicx a proprietary scheme that can be found on various places on the internet, but which I’ve reproduced below for convenience.