How to use oscilloscope to store waveform for viewing later?

[naseeam]

I'm using Tektronix TDS 320 Two Channel Oscilloscope. I am probing one of RS-485 differential signal on my target board. I see the messages sweeping across the screen but I need to save the waveform for say Five seconds. How do I use the storage scope to save and view the waveforms?

Thank you.

 

[RCinFLA]

I am not sure of the memory depth of TDS320 but I think is is 1000 samples per trigger. This would not be nearly enough to save 5 seconds worth of data unless it is very low bit rate. You will need at least 5 samples, preferably 10, per observed bit.

 

[Reloadron]

You can use REF 1 or REF 2 and save the waveform indefinately. You can also set up for a single sweep and it will retain on the screen whatever you sweep during single sweep. Do you have the manual for the scope? If not then give this a read.

 

[naseeam]

Thank you for the manual. I press REF 1 , Save CH1 to Ref1, but my waveform sweeps somewhat fast on the scope screen. I don't think it was saved to REF 1. will couple screens of data save to REF 1. Please tell me the steps to save
and recall waveform to REF 1.

 

[Reloadron]

You are simply trying to save a single screen shot of your waveform(s) right? Just to be sure. Read page 3-40 for Single Acquisition Mode. You really need to read a little to understand how your scope works. Also read on triggering in the manual and auto modes.

Ron

 

[naseeam]

I need to save several screens. Is that possible?

 

[Reloadron]

Page 3-43 and it all depends on if the scope has Option 14 installed. With the right interface you can run the outputs to a printer and print. I have a small Tek scope at work I use sometimes that has a floppy drive I can save screen shots to. Everything you are asking is covered in the manual I linked to. The trick is learning to use the scope and knowing its capabilities.

Ron