Bandwidth limit filters
Every band the analog front end really makes, 10 to 150 MHz, each measured, before the converter so the trigger sees it too.
Core video
What it does
Each channel's Bandwidth row offers 10, 20, 25, 50, 100, 125 and 150 MHz, and on an MHO900 250 and 350 MHz above them, below the scope's own bandwidth. Every band was measured within 10 % of its label on every channel of an MHO934 and a DHO924S, and the 20 MHz limit cuts at 20-23 MHz, where the same filter at Rigol's setting cuts at 26-31 MHz.
The limits are the front end's own filter, ahead of the converter: the trace, the measurements and the trigger all see the limited signal, and each band keeps its own calibrated zero, so a limit narrows the trace without moving it.
How to use it
- A channel's sheet, Bandwidth row: pick the band.
- Over SCPI: :CHANnel<n>:BWLimit 10M, 25M, 50M, 100M, 125M or 150M.
On Rigol's firmware
DHO800: 20 MHz · DHO900: 20 MHz · MHO900: 20 and 250 MHz.
Where it stands
Released in r73, on both families. The request it came from.
Part of NovaOS for every owner. Core and add-ons.