Thank you do you know what causes it to drop too low?
The
target SNRM is 3, 4, 5 or 6dB.
Broadcom modems tend to sync with a slightly higher SNRM at 3.3, 4.3, 5.3 or 6.3dB.
Although your target SNRM may have been 3dB, the actual SNRM can go up and down after sync is achieved as noise comes and goes on the line.
The target is never below 3dB though.
DLM moves the target SNRM in 1dB steps.
It requires G.INP to be active to go below a 6dB target.
Now that G.INP is active hopefully the DLM will start to lower your target SNRM down towards 3dB.
It usually drops to 5dB around 48 hours after G.INP is enabled, and 4dB after another 48 hours, etc.
Stability is key so best not to fiddle if you want back to 3dB.