Right I get a Scania monday not my choice 
. The lease on my Actros is finished so have to suffer 57 plate scanny for 4 months till i get a new one. The problem is i’ve never had a vehicle with a stoneridge unit before so if somebody could give me a quick rundown would be appreciated, Putting card in removing ,entries.etc Thanks 
I won’t try to give advise because it’s a long time since I’ve used a Stoneridge myself, but these links may help 
Stoneridge Digital Tachograph (rev 6) Instruction Manual
Thanks just what i was looking for
Straight forward mate and the time data is there even with ignition off unlike the siemens.