so... anyone who owns this signal generator tried using the frequency counter section?
I've had my 1022Z for just over a year, and while the signal generator functionality has been great for my purposes, I only just started needing to use the counter this week.
I was measuring a nominal 1Hz 0-3V square wave signal coming from a micrcontroller pin, to look at ppm accuracy of a crystal oscillator. The waveform was showing perfectly fine as a square wave on my 200MHz scope...
But when plugged to the counter, even with careful setting of level and sensitivity and coupling, the counter display would jump all over the place. it was *more often than not* getting an accurate expected value, but not consistently. It'd jump up even to MHz values sometimes, and even when it had the frequency right, it'd have the pulse width measurement way off from what I could see on my scope, which was pretty off-putting. And the HF supression filter actually made detection stability worse.
Today the thing has stopped measuring completely... lucky my trusty old keithley 2700 has a frequency counter that is measuring to the same ppm value that the Rigol was yesterday, so I can keep working. And I have the option to send the Rigol off for warranty repair...
So what I was wondering, was if anyone else has one of these things that they used as a frequency counter, have they've seen similar silliness as i was yesterday, or if what I saw was completely different to their experience with the counter?
I'm wondering if that behaviour was the indicator of some kind of fault pre-complete-failure, or if it's just like that. Because if they all behave like this normally, its probably not worth shipping off for a warranty repair, and my 1022z can just stay as a function generator for the rest of its life...