Comtrol VS1100 Configuration Guide - Manual (Page 17)

Power-On Diagnostics 17
Installing the Hardware
Power-On Diagnostics
When you switch a VS1000 base unit on, it performs a self-diagnostic.
The results are displayed via the LED lights on the back panel. If the
unit is working correctly, the following events should take place:
1. All LEDs should light up briefly, to show that they are working.
2. Both 10Base-T lights should remain lit after the port LEDs go out,
while the unit establishes the Ethernet connection and polarity.
3. If using 10Base-T cabling, the lower LED remains lit to indicate
that the Ethernet connection is established and polarity is correct.
4. The Port 1 LED begins flashing, to indicate that the VS1000 is
waiting for the server to initiate VS-Link communications.
5. The upper 10Base-T LED flashes briefly, as the server acquires
control of the VS1000.
6. The port LEDs begin flashing in a “sweeping” sequence, to
indicate that the unit is operating normally.
The following figures and tables illustrate LED patterns for
diagnosing hardware problems.
Table 4. 10Base-T LED Descriptions
LED Indicator Description
Upper
Flashes
Briefly
During the power-on cycle (first few
seconds after the power is turned on),
this flashes briefly to display link
polarity on the 10Base-T connection.
Upper
Flashing
The LED flashes briefly during data
transmission as a general indicator of
activity.
Lo
wer
On
Steadily
The VS1000 is attached to the LAN by
the RJ45 10Base-T connector.
Lo
wer Off
The VS1000 is not connected to the
LAN properly or it is connected by the
AUI port.