Technical data

2-4 NetBlazer LS Installation 90362-01
The other status indicators light to show activity on the respective channels;
unused channels do not light. The Ethernet status indicators include
TRAN
(Transmit),
RECV
(Receive),
COL
(Collision), and
UTP/BNC
(UTP and BNC
ports). The LocalTalk indicators are TRAN and RECV .
For the Dual DTE model, both DTE ports have status lights for
CD
(Carrier
Detect),
SD
(Send Data), and
RD
(Receive Data). The ISDN NetBlazer has
CD , SD , and RD lights for the DTE port, and for the BRI lines has LED lights
for
D
(D-channel),
B1
(first B-channel), and
B2
(second B-channel) status
indicators.
LED Activity
When the NetBlazer is first powered on, it performs an automatic Power-On
Self Test (POST). This test consists of a series of hardware exercises that
must be completed successfully before the NetBlazer can begin operation.
Passing the POST test indicates that the NetBlazer is functioning normally.
If an error is detected during POST, the LEDs on the right side of the front
panel turn on in a specific pattern that indicates the type of POST error that
occurred.
When the POST sequence finishes, the NetBlazer loads the software. Dur-
ing loading, the
RDY
light blinks to indicate activity. Once the software is
loaded, the
RDY
light stays on continually.
While the NetBlazer is running, the COL light should only blink on rare
occasions. If you see the
COL
light on very often, there may problem with
data colliding when it is being transmitted. The
COL
light may also come on
if the Ethernet cables have been disconnected or are not properly
terminated.
Dual-DTE LEDs
The Dual DTE LEDs on the NetBlazer LS display the current status of the
dual port connections. The lights for both DTE A and DTE B indicate the
same information.
Note:
If there is a POST failure, make a note of which LEDs are on before calling
Telebit Technical Support at 1-408-734-5200. The LED information helps
your technical support representative determine the most appropriate
course of action.