Focus DR-HD100 - Firestore - Data Storage Wallet User Manual page 115

• External
The External Control mode allows the DR-HD100 to be
controlled from a camcorder other than the JVC GY-HD, if it
features a DR-HD100 compatible external control setting
separate from the tape transport.
Camcorder Requirements for External Control Mode
External Control mode will not work unless it is supported by the
camcorder and the camcorder is placed in this external control mode.
Please check your camcorder manual for more details.
ProHD DR-HD100 Portable DTE Recorder
DR-HD100 Functions
99