Honeywell Q7055A user manual Col

BUILDING NETWORK ADAPTER BNA-1C/2CS/2DN

Shows the actual LAN traffic using 4 LEDs.

Col	Collision indicator				(Red)
	If this LED is on, then two or more
	devices on the network are
	transmitting at the same time. This is
	not a fault, but a normal occurrence
	on an Ethernet network. However,
	when the Collision LED remains on
	for all transmission attempts, it may
	indicate an abnormal condition such
	as an open end-of-line termination.
Rx	Receive indicator			(Green)
	on means that data is received by the
	BNA over the Ethernet.
Tx	Transmit indicator			(Green)
	If this LED is lit up, then the BNA
	device sends data to the Ethernet.
	When data is transmitted, the Rx
	indication	LED	is	lit	up
	simultaneously.
Lnk	Link indicator			(Green)
	shall always be on when the BNA is
	connected via the RJ45 connector to
	the Ethernet. If this LED is off under
	this circumstance, then it will not be
	possible to send or receive any data.
	If an AUI transceiver is used to hook
	up the BNA to the network, then this
	LED will be off in most cases because
EN1B-0198GE51 R0801					9