Originally Posted by Night Watchman:
“I think it was Nigel Whitfield, not Nigel Goodwin.”
I got the Nigel bit right

.. scr covers a few different systems including the one used with multiswitch installations to allow up to two compatible sky pvrs on a single cable.
Stand alone systems like the one the hdr purports to support is normally called SCD or unicable as I referred to in my original post and is pretty clear that's what DM was enquiring about.
It was your comment about lack of support in the hdr/hd menus that was totally incorrect. Like diseqc support it's not giiven any coverage in the manual which is really aimed at Freesat only users.
I doubt Humax customer support is equipped to give support to the boxes more esoteric functions.
In any case there's nothing wrong with the OP, the box should support this mode of operation though it would seem pretty pointless using it with the single tuner hd for the average user.