Configuration 7i92m_7i76x1D

I start to test pindle analog output and it has some strange behave.
For easy count voltage, I set maximum speed as 1000

I've measured voltage between 0V <> Vout.
Output is VERY! unlinear. What is the reason of this?

Are you measuring between TB4 pin 1 and TB4 pin 2? (from SPINDLE- to SPINDLE OUT)
What's the voltage between TB4 pin 1 and TB4 pin 3? (from SPINDLE- to SPINDLE+)

Yes, I measure TB4: pin1, Pin2.
Between pin1 and pi3 there is 10,45V.

What is the source of the 10.45V, is the 10.45 V constant at all spindle settings?

I took source from Frequency drive 0-10V. It should be constant.
I've measured
S900 - U12=0,9V, Power Source (Pin1-3)=10,44V
S800 - U12=8,91V, Power Source =10,44V(not changed)

Try setting the output scale to 1000 (its set to something crazy in the ini file)