Clarity WN=5230-S 用户手册

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页码 122
 
 
WN-5230-S VideoWall User’s Guide 
 
 
85 
SOURCE 
On = valid source detected on the selected input. If this is 
off, either the wrong source is selected, or the source has 
no signal in it.  
GLOBAL 
This LED glows whenever data activity is detected at the 
RS-232 connector. It does not matter whether the packet 
was addressed to this unit on not, or even whether this is 
a command formatted for Clarity display use. It tells you 
there is a good connection to the controlling computer. 
The brightness of the LED is proportional to the density of 
the incoming data. 
LOCAL 
This LED glows very briefly whenever a valid packet of 
data is detected at the RS-232 connector and the packet 
is meant for this unit. It may be a global command, or a 
command addressed specifically to this unit. This display 
unit will try to execute this command. It will return an 
acknowledgement (ACK) only if the command was 
addressed to this unit exclusively.