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7750 SR-12 Overview
7750 SR-12
Page 21
Reference
1
The Reference LEDs are lit only on the active CPM and indicate the
status and quality of the individual timing sources.
• Green: Qualified and selected as clock reference input.
• Green (blinking): Qualified but set as standby clock reference.
• Amber: Not qualified.
• Unlit: Not in use, not configured.
2
This LED is lit only on the active CPM. The standby should be unlit.
• Green: Qualified and selected as clock reference input.
• Green (blinking): Qualified but set as standby clock reference.
• Amber: Not qualified.
• Unlit: Not in use, not configured.
3
This LED is lit only on the active CPM. The standby should be unlit.
This LED supplies status on BITS network clocking which derives
network timing from the central office (CO) BITS.
• Green: Qualified and selected as clock reference input.
• Green (blinking): Qualified but set as standby clock reference.
• Amber: Not qualified.
• Unlit: Not in use, not configured.
Power Supply
1,2,3,4
Power Supply LEDs are lit only on the active CPM.
• Green: Indicates that a power supply module is installed and
operational in the associated slot.
• Amber: Indicates an error condition with an installed power supply
module in the associated slot.
• Unlit: Indicates that a power supply module is not installed or not
recognized.
If AC power rectifiers are used, then a status cable must be connected
from each AC power shelf to a DC PEM in order for status to be
monitored.
• LED 1: Displays status for DC PEM 1.
• LED 2: Displays status for DC PEM 2.
• LED 3: Displays status for AC power supply shelf 1.
• LED 4: Displays status for AC power supply shelf 2.
Fan Status
1,2,3
Fan Status LEDs are lit only on the active CPM.
• Green: Indicates that a cooling tray is installed and operational.
• Amber: Indicates a cooling tray failure.
• Unlit: Indicates that a cooling tray is not installed.
Compact Flash
1,2,3
Compact Flash LEDs are lit on both the active and standby CPMs.
• Green: Indicates that the flash card is operational and in a read or write
process.
Note: Do not remove the flash card when the LED is lit green.
Table 4: Model SFM-400G SF/CPM Field Descriptions (Continued)
Key
Label/Part
Sub-
category
Description
Содержание 7750 SR-12
Страница 1: ...7750 SR 12 INSTALLATION GUIDE Document Part Number 93 0019 01 December 2003 ...
Страница 6: ...Page 4 7750 SR 12 Table of Contents ...
Страница 14: ...Page 12 7750 SR 12 ...
Страница 84: ...Monitoring AC Power Page 82 7750 SR 12 ...
Страница 100: ...Establishing Router Connections Page 98 7750 SR 12 ...
Страница 150: ...Impeller Trays Page 148 7750 SR 12 ...
Страница 156: ...Cable Pin Assignments Page 154 7750 SR 12 ...