ACCSI is a universal serial interface which plugs into the D-sub-15 socket of the ACC501 and serves as a interface for the GPS module. Featuring a powerful Atmel controller it is a future-proof design to adopt various serial interfaces.
Ambient's GPS module has been kept small enough to be stored in the ACC pouch. It comes with a 2 meter cable attached and can be used to derive position data and universal time (UTC) to jam the internal timecode generator. The GPS reference signal of one pulse per second can also be used to calibrate the internal reference oscillator. Thus, it is possible to synchronize cameras anywhere worldwide to well under 0.5 frames offset.