Hi All and Jarek
I seem to have the same problem as yours.
Error occurs while calibration.
My Post is here
https://www.eevblog.com/forum/repair/rohde-schwarz-smiq03b-with-error-313-error-180-calibration-failed-and-erro183/msg5546891/#msg5546891I replaced the SHF0186 V103. Its drain voltage is changed from 0.64V to 6.7V.
I have no idea what is the reference voltage 6, 9, 12V.
I check the manual and find any point may relate to the reference voltage.
It may be below
1. X240.A2 UREFAM 0-12V (AM Command Value)
2. TP2121 D_IQCAL 0-12.5V (Cal detector IQ Modulator)
3. TP2120 D_PHI 3.5-13V (Control Voltage phase shifter )
4. TP2014 D_TUN2G4 3-18V (Tuning voltage 2.4GHz VCO)
it is the priority of my troubleshooting.
Could you share the idea of yours?
Thanks!
