Ducati general manager Filippo Preziosi believes his team has made a step forward after three days of testing at Jerez.
Test rider Franco Battaini rode on all three days, focusing on honing the electronics and setups of the new 1000cc GP12 bike.
Preziosi said that he was satisfied that the bike has made a step forward and is keen to give race riders Valentino Rossi and Nicky Hayden a go on the updated machine at the official Sepang test.
"We were lucky because we had three days with very good weather conditions," Preziosi said. "And that enabled us to do quite a bit of work. With Franco we continued with the test programme that was planned for the test team over the winter, trying some aspects of the electronics that we'll keep working on with the factory riders at Sepang.
"I think we found out some interesting things that we'll soon confirm with Vale and Nicky in Malaysia, where we'll also continue working with the bike's setup."
Satellite Ducati squads AB Cardion Racing and Pramac Racing were also at Jerez, Karel Abraham and Hector Barbera on riding duties.