Black Box ACS4201A - Manual (Page 24)

DVI-D CAT X KVM-EXTENDER
24
3.4 Diagnostic LEDs
Each DVI-D Cat X KVM-Extender is fitted with four indicator LEDs: Power, Video OK,
Data Error, Link Status: The Power LEDs are next to the Power socket.
The location of the LEDs is shown below:
Diagnostic LED
Data Error
Diagnostic LED
Link Status
Diagnostic LED
Power
Diagnostic LED
Video OK
Diagnostic - LEDs at DVI-D Cat X - Extender
LED Appearance Diagnostics
Power LED
(Red LED) Off
On Device not ready
Device ready
Video Okay
(Green LED) Off
On No or invalid video signal detected
Device ready
Link Status
(Green LED) blinking
On No CAT5 connection
Device ready
Data Error
(Green LED) Off
blinking / On Device ready
Errors through data transmission over CAT5 Cable
(Cable too long, too high attenuation or too much
EMI interferences )