The Rigol MEM-DS1000Z licence increases the maximum memory depth to 24Mpts (from 12Mpts) on Rigol DS1000Z series digital oscilloscopes and Rigol MSO1000Z series mixed signal oscilloscopes. Please refer to the Rigol MSO/DS1000Z Series User Guide for further information. The MSO/DS1000Z Series User Guide can be found on any Rigol MSO/DS1000Z instrument page, under the ‘DOCUMENTS, SOFTWARE & VIDEOS’ tab.
Each licence contains a unique product key. The product key is used to generate a software licence code that must be entered into your instrument. To generate a Rigol software licence code using your Rigol product key, please see HERE. Installed software licence codes are permanent – They are unaffected by Rigol firmware updates.