Why is variable interval not possible with variable volume on the SD900 sampler?
SD900 and programming Var Int/Vol
This error occurs on SD900 samplers that were manufactured prior to Jan 2008 and have not had the firmware updated. They are not capable of accepting a 4-20mA signal. The 2021 signal converter was still used when they came out. If they would like to use a direct 4-20mA signal instead, they will have to update their firmware to V2.09 or higher.