Specifications

AT-TS24TRS
40
LED Displays
The LEDs intentionally do not reflect real-time activity on the AT-TS24TRS
because a data packet is too fast for the human eye to distinguish on the
LED indicator; therefore, the hub artificially stretches the LED ON time
for observation.
Hub Indicators Hub LED indicators for the AT-TS24TRS hub are described below:
POWER—Green whenever power is applied.
FAULT (OFF under normal operational conditions)—Stays red for a very
short time at power-up; remains solid red if a malfunction is detected
during the diagnostics.
ACTIVITY—The Activity indicator will flash when Ethernet packets are
being transmitted to all hub ports.
Port Indicators The AT-TS24TRS port indicators on the hubs’ front panels provide visual
diagnostic and activity information for network analysis. Each 10BASE-T
port supports the following indicator functions with one two-color front
panel LED per port:
LINK (Solid Green)—This indicates that the particular port has a valid
link and is not partitioned.
RECEIVING (Flashing Green)—When a port’s LED is blinking, the port
is receiving Ethernet packets.
PARTITIONED (Solid Amber)—A solid amber port indicator means the
port is partitioned or segmented from the rest of the ports. This may occur
by a management function or by an error condition on the link.
COLLISION (Flashing Amber)—A momentary amber flash occurs when
a collision is detected on the port.
NO LINK (No Light)—If the link test function is not met by the 10BASE-T
device at the opposite end of the UTP segment, this LED will not
illuminate. This may occur if the workstation at the end of the segment is
turned OFF or if the UTP segment is disrupted or damaged.
SELF-TEST (Sequential Flashing Green)—This indicates the hub is
conducting a power-ON self-test. The test continues until one port is
connected (valid link) or the module is connected to the chassis backplane.
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