Roland V-440HD Owner's Manual page 21

About Loop Thru
The HD/RGB IN connector (D-sub) and HD/RGB IN connector (BNC) for any
particular channel are linked internally within the unit. So, for example, if analog
component signals are input to the Channel 1 HD/RGB IN connector (D-sub), the
same signals are output from the Channel 1 HD/RGB IN connector (BNC). This
function is called "Loop Thru."
Using Loop Thru, you can monitor the video output of each video input on a
television monitor, or even use the connections for multiscreen output.
However, the following precautions must be observed.
• Set the TERMINATOR 75Ω switch to on when Loop Thru function is not used
When not using Loop Thru, some devices will not function properly unless the
TERMINATOR 75Ω switch is set to ON.
• Using more than one pass with Loop Thru may result in attenuation of the video
With three or more V-440HDs connected using Loop Thru, the video signal becomes
more attenuated the further down the signal path the V-440HD is.
When using identical video with three or more V-440HDs, be sure to use a
commercially available video multiplexer.
Connections and Settings
21