Noise Floor with internal 50 ohm worse than with external 50 ohm

Post any questions you may have about our current range of oscilloscopes
Post Reply
goetz.becker
Newbie
Posts: 0
Joined: Tue Jul 31, 2018 2:23 pm

Noise Floor with internal 50 ohm worse than with external 50 ohm

Post by goetz.becker »

Hi,

I am using a PicoScope 6425E 4Ch 750MHz in a new measurement setup. The configured range is 500mV/200mV. Compared to a 5244D I see a much higher noise floor on my signal - even with 200MHz BW Limit and DSP Lowpass 200MHz active. The strange thing is, that the noise is getting worse on the 6424E when I use the internal 50 ohm mode instead of an external one.
Anyone has an idea what might bite me here?

Thanks and kind regards,
Goetz

Post Reply