Hi
Probably an earlly Veritas 6 or 8 still good today easy to reset to.
As Adam pointed out the manual is on texacom webside in PDF format.

As for technology Yes it's come on in leaps and bounds but For the better??
who knows The veritas range is still going strong and we fit at least 4 a
month.
If you get stuck repost and I can email you the user man's.

HTH

CJ