Just reporting in re the suitability of these rather cheap unit from CH. Yes they are (all?) upgraded units from an EXT? or possibly something else. The licences are all internally generated i.e. not official Keysight ones but do function perfectly normally. If you're thinking you might want to get one I'd say go for it! It can be difficult to communicate with CH because of the language barrier but I do a lot of business with CH and never had any problems. The units are a genuine bargain. Must thanks others on the forum for their help and advice.
JohnB
