Can I use the internal accelerometer and the external accelerometer inputs at the same time?
A single recording engine can only access three high speed channels at a time. Thus, EDR3 and EDR3C recorders can access either internal (differential) accelerometers, or external (single-ended) accelerometers, but not both at the same time. Recorders with multiple recording engines such as the MSR-3C or the EDR3D can access both single-ended and differential acceleromter channels, but only in groups of three. You cannot “mix & match” single-ended and differential channels within a single channel set.
