Send this commands to the instrument to make 200 period measurements of the signal on the input D, averaged over 10 ms intervals with auto-trigger and send results. (Signal is assumed to be present on input D).

Queries (commands with '?' sign) assume reading response from the instrument.

1 *RST; *CLS
2 SYST:CONF "Function=Period Average D; SampleCount=200; SampleInterval=10ms; VoltageMode=VeryFast"
3 :INIT
4 *OPC?
5 FETC:ARR? MAX