Low jitter lab up to 3GHz and TDS694C

[tchiwam]

I am trying to build my lab for a low jitter kit  <100ps, with a good timebase etc...

1st step was a good scope, TDS694C, with all trigger chips working and some space to save the wave form. Found it from ebay.

As I am in a remote region, a friend of mine is testing the equipment down south before sending it over.

Plugged the output of a AWG2021 to the TDS694C

Initial power up was OK

Wave form was OK, trigger seems to be OK

Then warning about the input overheating

soon after click click sound, screen blinking...

Main power switch was turned off at that moment.


What could be the next thing to ask my friend to check ?

Is the fan working was my 1st guess ?

Should I return the unit or try to fix it ? Triggers seem to be all good.

Thank you all,
 

[snoopy]

You have inputs switched to 50 ohm and feeding in to high a signal level ??

[tchiwam]

The AWG outputs 0 to 5VDC 50 ohm signal maximum and verified.

The TDS694C is always 50ohm input