I need help, what is this? what does it do?

[dave2236]

Ok I know its an HP Plotter. I need your expert advice to tell me what it does and what you think they are worth? I have about 50 extra pens and assorted items

[Achika]

* Six pen
* Plot on paper
* Plot on HP / Agilent overhead transparency film
* Handles A4/A and A3/B-size paper
* Options
Opt 001 - RS-232C
Opt 002 - HP-IB


"The 7475A Six-pen Graphics Plotter provides high quality, six color plots on A or B size paper and transparencies. Addressable step sizes down to 0.001 in. allow for plotting of as many as 1000 points per inch. This high resolution assures straight lines and smooth curves in any orientation. A 90 degree offset control is provided on the front panel. This graphic plotter uses the powerful HPGL language with over 50 high level commands. The 7475A can also be used to digitize plots for entry into your computer system"

http://www.testequipmentconnection.c...sp?model=7475A

http://www.simandl.cz/stranky/elektr...olorgraf_a.htm


teh Google.com pulled up that stuff ^

What else is a plotter supposed to do besides plot points on a graph?

[digitalpress]

We used to have one of these in our office, years ago. Before color printers got fast and relatively inexpensive.

Plotters are VERY slow, and draw in vectors. The mechanism grabs the associated color pen and draws your (usually a graph, floor plan, org chart, etc) lines in that color.

It's retro-cool.

[ubikuberalles]

Ah, the HP 7475A plotter. We had several at work years and years ago. It takes serial input and you must send HPGL (HP Graphics Language) commands to it for it to draw things. I doubt that there will be much of a market for this plotter as it will be difficult to find drivers and it takes FOREVER to plot a complicated graph. At work, it took hours to plot 40-50 graphs that the engineers needed daily. We wept for joy when we got laser jet printers. It's likely that shipping will cost more then any winning bid on E-bay. It's a nice museum piece but I don't see you getting much for it.

[Goblin]

What kind of interface does this have, serial or GPIB (General Purpose Interface Bus otherwise known as IEEE-488 standard). I used these plotters rather extensively at a previous job. For us they hooked up to pieces of HP/Agilent test equipment such as Network Analyzers or Spectrum Analyzers. They allowed us to have hardcopies of response curves as we characterized our designs.

You might be able to sell it on ebay or to a company dealing in electronic test equipment such as: Test Equity. Without the test equipment to attach to it, it would be virtual worthless for a collector.

[jonjandran]

Had one of these in school. We used to print our AutoCad Drawings with it. It did pretty good. But I'm not sure if there is much of a market for it now.
Sells for $24.99 - $49.99 on E-Bay