FAQs from Rohde & Schwarz

Reference Input Information FPC1x00


The only information for the 10 MHz Reference Input in the Specifications of the FPC series is about the lowest required level and the impedance.

Connector BNC, 50 Ω
Mode ext. reference, ext. trigger
External reference required level 0 dBm
frequency 10 MHz

Can you please provide information about the required waveform and the maximal valid input power?


The shape of the waveform is not decisive at this point. Among other things we have connected a filter with a subsequent TTL gate in the input. Accordingly, the level only has to be high enough and may not exceed 3V pp, which corresponds to around 13 dBm.