New Acer Travelmate 2500
Have not used ADC for a while
Adapter connecter in LPT cable
Help About says Driver V 3.0, No adapter (?)
1. On both channels, the trace sticks at about -20V (even when leads not connected to inputs)
2. PC seems to find ADC OK (as I changed to LPT2 and it wouldn't find it)
3. Setting any triggering to Auto results in mouse almost freezing and PC becoming unusable.
As this is the only scope we now have and I need it for A level Physics lessons next week, can anyone suggest further checks or a solution?