[Mondial]

According to the answered questions on Amazon, minimum output is around 10 mV which is still a lot for alignment without using an external attenuator. So yes, the output is adjustable but you would still need some sort of switchable attenuator to get down to the microvolt output level.

As per this response, there is no AM or FM modulation:


What is the minimum sine wave output? can this unit do am of sine wave, say 1khz mod of a 5 mhz sine wave?

Answer:
I cranked mine down to 10 mV P-P at 10 MHz and the waveform display on my scope was a little smeared, that is not a real clean trace but still a sine wave. The question of modulation has come up before since there is a input connector, but that connector is for using the generator as a counter. So no, you cannot modulate the output. If you want an AM signal it should be easy to put the output thru a FET modulator circuit. There are all kinds of FET circuits online for doing just that. For FM no such luck. Yeah that made me unhappy too when I needed an FM signal. 

According to the answered questions, this model does have the AM capability:

https://www.amazon.com/dp/B08T9H9FBY/ref...RydWU&th=1