ADTRAN TSU 120 Bedienungsanleitung Seite 42

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Seitenansicht 41
Chapter 3. Operation
3-2 TSU 120 User Manual 61202129L1-1
LED Descriptions
CSU Status
The CSU status LEDs display the operational condition of the
network interface located on the controller board in the unit.
Numeric Keypad
The numeric keypad contains the numbers
0
through
9
which are used to activate
menu items and enter information (such as
the IP address).
Shift (entering
special function
keys)
Enter special function keys by pressing
and holding
Shift
before pressing the key
representing the desired character.
To activate a special function key rather
than a number, press and hold
Shift;
then
the button. See Operation Keys on page 3-5
for a description of the function keys.
If a key is pressed without using
Shift
, the
numbered item becomes active instead of
the special function key.
OK (
GREEN
) Indicates the operation is in the normal mode and no
errors have been detected.
T
EST
(
YELLOW
)
Indicates that the network interface is operating in a test
mode. This includes a self-test or a test loopback. When
lighted, this LED also indicates that normal data flow is
not occurring on the network interface.
E
RROR
(
RED
) Indicates an error such as a BPV, OOF, or CRC.
A
LARM
(
RED
) Indicates an alarm condition has been detected. When the
alarm condition is no longer valid, the OK LED activates
(turns on). To view an alarm condition, select the active
alarm menu item or select A
LARM
by pressing
Shift+8
. If
the alarm conditions have been corrected, the alarm which
caused the activation of the Alarm LED can be viewed
under the Unit History menu.
Table 3-1. Front Panel Descriptions
Name Description
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