I think I find the reason. The Channel on the PicoScope 6000 Series has an input impedance of 50 Ω, and my synthesized function generator also has an output impedance of 50 Ω, so the voltage is half. Right?

Hi,
I find that the voltage displayed by my PicoScope6407 in PicoScope 6 is only half. I use a SMA/BNC adapter to connect the channel A and a synthesized function generator, is this the cause?
Thanks in advance.

Thank you very much for your answer

I'm learning the official sample program "PicoScope3000aExampleBlock.vi"。I find that if timebase<=4, Sample Rate(ns) = 2**timebase , but if timebase>4, Sample Rate = 16+8*(timebase-4) . So I want to know why the relationship is like this？