Ducati Monster 796 Workshop Manual page 256

Diagnostic instruments
The tester requires a power supply voltage within 9 and 16 Volts D.C.
Make sure voltage never drops below this limit during operation: this situation could occur during engine starting and
idling on motorcycles in which the battery is not in perfect working order. If the tester detects a power supply voltage
lower than 9 Volts, the current procedures will be reset; when the voltage returns to the acceptable tolerance limits the
procedure must start again from the beginning.
The DDS diagnosis instrument (1) may be powered from the motorcycle in any one of the following ways:
- by connecting to the instrument power connection socket (N) the battery power adapter (3) part no. 97900.0230 and
the latter to the motorcycle battery;
- by connecting to the instrument's diagnosis connector (P) the power and diagnostic cable (4) part no. 97900.0227S;
then connect the motorcycle DDA socket (S) to the connection socket of the power and diagnostic cable.
Note
For connection of the various devices required for self-diagnostic procedures, consult the instruction handbook supplied
with the tester.