Well, now that i have seen the schematic, allow me to rephrase and clarify. What i meant was connecting Vin_sc1_n terminal to a DC voltage level, since the sc1_n and sc1_p are fully differential inputs. However since the absolute voltage levels are +/- 25 volts, (i was under the impression that +/- 25 volts limits were between the differential terminals), even this scheme will not work. The only solution is to use DC attenuators or drop the signal using simple resistive divider, or through the probes you mentioned before. Thank you for your support.