Would you mind telling or showing more details, like PCB,mechanical and thermal design, choice of resistors?
If prerequisites are ok, I offer to do the T.C. trimming, and determination of output voltage(s)
Frank
This is the board I have - your design The resistors are Vishay. The two critical resistors are hermetically sealed.
Very much appreciate your assistance.
Well, fine,
, so I'm familiar with that board, at least.
So what is the T.C. of these resistors, the Vishay and the other ones?
Did you determine these T.C.s?
How is the PCB assembled, or is this the current state?
It's not feasible to trim this naked PCB, as the mechanical/thermal assembly also influences the T.C.
Also be aware, that the trimmed 10V output has to be re-trimmed, because T.C. trimming by this nominal 200k resistor changes the LTZ1000 output voltage.
My offer persists, if you would have made a proper assembly.
Frank