HD SDI remote function
This function superimposes signals that remotely controls recording and recording pause of external devices connected to the <SDI OUT1> and <SDI OUT2> terminals on the HD SDI output signal. To activate this function, set the main menu → [I/F SETUP] → [OUTPUT SEL] → [HDSDI REMOTE] to [ON].
For details, refer to [HDSDI REMOTE] ([HDSDI REMOTE]).
Display during external device control
While recording command is being output, [SDI REC] is displayed in the viewfinder and LCD monitor, and the back and rear tally lamps and the tally lamp on the viewfinder lights up.
While recording pause command is being output, [SDI 
] is displayed and the tally lamps will go off.
For details on the display, refer to “HD SDI recording control information display”.
Also be aware of the following points.
Even when data is not recorded on the camera, the tally lamp lights up while a recording command is being output.
The recording control signal status output from the camera is indicated, and not the recording status of the connected external device.
Set [GREEN] or [CHAR] in the main menu → [REC/PB] → [REC/PB SETUP] → [REC TALLY] to indicate the recording status of the camera with the green tally lamp on the viewfinder or with characters. You can distinguish the status from the external device control status indicated by the previously mentioned tally lamps.