Why do the 81110A complement (differential) output not work?
Please verify which output module is installed!
The normal and complementary signals apply only to the 81110A mainframe if the 81112A output module is installed. There will be no complementary signal at the complementary BNC if the 81111A output channel is installed.
The 81111A generates either the normal output signal or the complementary output signal at one time on the normal BNC, whereas the 81112A generates both signals at the same time.
The complementary BNC is always disabled with the 81111A.
The 81110A always comes with normal and complementary BNC, regardless of the configuration. It has been designed this way to allow the retrofit of a second output module by the customer.