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LMX2594: LMX2594 Segments table rule

Part Number: LMX2594
Other Parts Discussed in Thread: LMX2572

Hello, TI team.

We are using one of your PLL (LMX2594).
Our application is using output frequency range ~ 1-3.5G.

We observe that following the rule in Table8 we have H2(2nd harmonic) much higher for segment 1250-2500M (division of 6) rather using neighboring segments (VCO division by 4 or 8).

image.png

Below you can find PLL output for both cases.

PLL output for 1500MHz (VCO divider by 6).
image.png
PLL output for 1500MHz (VCO divided by 8). VCO frequency is 12GHz (so, the rule is violeted).
image.png

We clearly understand that violating the rule may result in certains parameters going out of the specification. 
Could you please provide us with more details about what exactly this flaw is?

Thank you in advance!