Re: [Discuss-gnuradio] Assertion "imu >= 0" failed on random times

[Daniel Bartel]

Hi Tom,

thanks for your explanation and sorry for my late reply. 

> What block are you using to call the interpolator? What values is the block 
> working off? If it's the M&M clock recovery block, it's possible that the 
> amplitude your input signal is too high, which is causing overly-large error 
> values that are resulting in mu being driven negative.
You're right, it's the M&M clock recovery block, which calls the interpolator.

What do you mean with "that the amplitude your input signal is too high"? 
Are there any restricts concerning amplitudes inside the flowgraph?

Kind regards,
Daniel