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Chapter 3. Operation
Numeric Keypad
Shift (entering
special function
keys)
LED Descriptions
CSU Status
The CSU status LEDs display the operational condition of the
network interface located on the controller board in the unit.
OK (
)
GREEN
T
EST
(
)
YELLOW
E
(
)
RROR
RED
A
(
)
LARM
RED
3-2
Table 3-1. Front Panel Descriptions
Name
The numeric keypad contains the numbers
through
0
menu items and enter information (such as
the IP address).
Enter special function keys by pressing
and holding
representing the desired character.
To activate a special function key rather
than a number, press and hold
the button. See Operation Keys on page 3-5
for a description of the function keys.
If a key is pressed without using
numbered item becomes active instead of
the special function key.
Indicates the operation is in the normal mode and no
errors have been detected.
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.
Indicates an error such as a BPV, OOF, or CRC.
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alarm condition is no longer valid, the OK LED activates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
the alarm conditions have been corrected, the alarm which
caused the activation of the Alarm LED can be viewed
under the Unit History menu.
TSU 120 User Manual
Description
which are used to activate
9
before pressing the key
Shift
by pressing
LARM
then
Shift;
, the
Shift
. If
Shift+8
61202129L1-1
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