Products > Test Equipment
Screen Grabs on TDS series scope over GPIB?
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rx8pilot:
I am trying to figure out how to get screen grabs from a Tek TDS754C over GPIB. Is there a relatively simple application for this. I don't mind spending some money but was hoping it would not be as much as LabView. Also hoping to avoid a bunch of custom coding if at all possible. The 3.5" floppy is a last resort option that I would love to avoid as well - far too slow.

I have a GPIB to USB adapter (Galvant). A Google pass on the topic seems to reveal a mish-mash of roll-your-own DIY and app-notes for specific instruments. Nothing seems to stick out as a winner.
NF6X:
I'm not familiar with the Galvant adapter, but I have a Prologix GPIB-Ethernet adapter, and a similar need to get screen dumps from my "new" HP 8560E spectrum analyzer. I haven't started working on this quite yet (just got the analyzer yesterday!), but the 8560E appears to be able to print or plot to a few HPIB printers and plotters, and the Prologix adapter has a device mode in addition to its more commonly used controller mode. So in theory I may be able to:

Open up the adapter in device mode, using telnet initially but later writing a Python script to make things easier.
Print to it from the 8560E's front panel.
See printer gobbledygook spew out the telnet window.

If that all works, I should be able to write a Python script to set up the interface, grab a printout, and convert it to something like .PNG.

Maybe you can do something similar with your Galvant. The amount of custom coding necessary may be quite small?
BloodyCactus:
find the manual for the tek, look up its gpib commands for taking screenshots. send command over a gpib command terminal.

just understand, what sends back as a screenshot probably wont be png, maybe it will be a tif or pcx or something

eg: my HP logic analyser will happily give you a screenshot in HP PCL printer language as if your sending the screen to the printer.
iDevice:
I use this
TSL:
I second @iDevice.

The GPIB toolkit here...
http://www.ke5fx.com/gpib/readme.htm

The GPIB toolkit contains a 7470 plotter emulator that's quite exceptional. It also has many other tools and example programs and is compatible with the Prologix.

The output attached I captured using the 7470 emulator, an NI GPIB card and connection to my HP8566B SA.

cheers

Tim
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