I have a Rigol DS2072. When I use both channels to measure both channels from my function generator all is well but when I connect one channel to my MFJ 269C antenna analyzer set to the same frequency as my function generator I can't view both signals simultaneously. One is fine but the other one is all distorted. Is there a logical reason why this is? Or is there something wrong with the scope?

Thanks for the help


Pierre

 

Can you post a screen shot? Are they sharing a ground?

 

They may be set to the same frequency but they won't be exactly the same frequency. If the timebase is triggered from, say, CH1 then CH1 will display correctly but CH2 won't be synchronised. I don't know the menu system on that scope but on a non-digital scope you would select 'alternate trigger' which display the two channels on alternate sweeps each correctly synchronised.

 

 

Here's a discussion of alt-trigger on the Rigol DS2072.

http://www.eevblog.com/forum/testge...gering-individual-triggering-on-each-channel/

There are some screen shots near the bottom that look almost identical to what you're getting, and I believe a solution (I only skimmed it).

 

Here's a discussion of alt-trigger on the Rigol DS2072.

http://www.eevblog.com/forum/testge...gering-individual-triggering-on-each-channel/

There are some screen shots near the bottom that look almost identical to what you're getting, and I believe a solution (I only skimmed it).

Thank you very much for the help.

 

That is a digital scope with a USB port. Why are you posting huge sideways photos of your scope? You realize you can take very nice looking screen shots and save to USB right?

You can also download ultrascope from Rigol's website and view and save waveforms right on your PC.

Makes it a lot easier for people to view your sample waveforms.

 

That is a digital scope with a USB port. Why are you posting huge sideways photos of your scope? You realize you can take very nice looking screen shots and save to USB right?

You can also download ultrascope from Rigol's website and view and save waveforms right on your PC.

Makes it a lot easier for people to view your sample waveforms.

Don't have a pc hooked up near it at the moment. Just getting to know this fine piece of engineering.

 

Don't have a pc hooked up near it at the moment. Just getting to know this fine piece of engineering.

A PC is nice because you can get a larger image. Plus you can actually view the waveform in a data format but a PC is not needed to save an image.

Place a thumb drive in the scope.

Press Storage
Press Waveform and use the selector knob to save as Bit Map. Press knob to select
Press External/New File
You can use the knob to change the characters for a file name. Press to select.
Press Save

BMP file will be saved to the thumb drive.

 

A PC is nice because you can get a larger image. Plus you can actually view the waveform in a data format but a PC is not needed to save an image.

Place a thumb drive in the scope.

Press Storage
Press Waveform and use the selector knob to save as Bit Map. Press knob to select
Press External/New File
You can use the knob to change the characters for a file name. Press to select.
Press Save

BMP file will be saved to the thumb drive.

Thanks for the tip. I'll do that next time.

 

On the ds2072, just press the print button and it will save a screen shot to the usb fob.

 

On the ds2072, just press the print button and it will save a screen shot to the usb fob.

Cool even easier. Does it automatically print in bmp or does that need to be set?

 

Speaking of the DS2027

Found this
http://hackaday.com/2013/07/02/unlocking-a-rigol-scope-once-again/

Wow 70 to 200mhz hack. Might be worth looking int o.

 

I have a Rigol DS2072. When I use both channels to measure both channels from my function generator all is well but when I connect one channel to my MFJ 269C antenna analyzer set to the same frequency as my function generator I can't view both signals simultaneously. One is fine but the other one is all distorted. Is there a logical reason why this is? Or is there something wrong with the scope?

Thanks for the help


Pierre

The trigger event must be derived from each channel (alternately) -- as shown, the trigger event is derived from a single channel only (to wit: that presenting the static/stable display)...

Best regards and good Luck!
HP