GSG-101D is an optical-electronic system (OES) which includes the SONY FCB-EV7500 day camera. The OES is stabilized along two - axis. The active stabilization mechanism of on each axis uses a direct drive and an absolute magnetic encoders. The OES is specially designed to work on board unmanned aerial vehicles of various types and is controlled via the CAN bus. It transmits a compressed H.265 secondary video stream via the LAN interface to the on-board video modem.