Chapter 3. Operation
61200610L2-1
TSU 610 User Manual
3-3
CSU Status LEDs
Table 3-1. Network Status LED Descriptions
LED
Color
Description
OK
Green
Indicates the operation is in the normal
mode. No alarms have been detected.
Test
Indicates that the network interface is op-
erating in a test mode. This includes a
self-test or loopback tests. When illumi-
nated, this LED also indicates that normal
data flow is not occurring on the Network
Interface.
Alarm
Red
Red when an alarm (
RED, BLUE, YEL-
LOW
) is active on the Network Interface.
Otherwise, it is Off.
To view an alarm condition, select the
ACTIVE ALARM
menu item or select
ALARM
by pressing
SHIFT+8
on the ter-
minal.
If the alarm conditions have been correct-
ed, the alarm which caused the activation
of the
ALARM
LED can be viewed under
the
UNIT HISTORY
menu.
LOS
Red
Red when there is loss of signal on the
Network. Otherwise, it is Off.
YEL
Red
Red when a yellow alarm is present. Oth-
erwise, it is Off.
ERROR
Red
Flashes RED when CRC, XS0, BPV, or FER
errors are detected on the Network Inter-
face.
Summary of Contents for 1200610L2
Page 20: ...Table of Contents xx TSU 610 User Manual 61200610L2 1...
Page 24: ...List of Tables xxiv TSU 610 User Manual 61200610L2 1...
Page 56: ...Chapter 3 Operation 3 12 TSU 610 User Manual 61200610L2 1...
Page 94: ...Chapter 4 T1 Network Interface 4 38 TSU 610 User Manual 61200610L2 1...
Page 142: ...Appendix B Understanding TR 08 B 4 TSU 610 User Manual 61200610L2 1...
Page 156: ...Appendix E Specifications E 4 TSU 610 User Manual 61200610L2 1...
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