What is the cutoff frequency of the rear AUX input ports?

(SUPPORTED MODELS IN BOLD: E5071C E5072A E5070B/71B E5070A/71A E5061A/62A E5061B)

There is analog filter circuit on the ranging circuit of AUX input.
The cutoff frequency of these filters is:
- 1V range: 10 kHz
- 10V range: 2.7 kHz