
AT-1500 Plug and Play
28
If a transceiver is installed, care must be taken with the setting of
the heartbeat/SQE switch. Unless the transceiver is installed on a
device that specifically requests that the heartbeat/SQE switch
be ON, this switch should be set to OFF. Failure to set the
heartbeat/SQE switch correctly results in degradation or failure
of network communication.
Communication Status Indicators
Table 8 shows the functions of the four status indicators located
above the RJ45 receptacle.
Table 7:
Allied Telesyn Micro Transceiver Choices
Model Description
AT-MX25F/AT-MX26F
Fiber Optic (FOIRL, 10BASE-FL)
AT-210T/AT-210TS/
AT-MX20T
UTP (10BASE-T)
AT-MX10/AT-MX10S
Thin Ethernet (10BASE2)
Table 8:
AT-1500 Plug and Play Status Indicators
LED Color
Label
Indicates
Used by
Green
TX
Transmitting packet
All media
Yellow
RX
Receiving packet
All media
Green
LNK
Valid receive link signal
10BASE-T,
10BASE-FL
Yellow
COL
Collision detected
All media