User's Manual

DEC. 2011—EFT REVIEW DRAFT—CISCO CONFIDENTIAL
2-18
Cisco 1240 Connected Grid Router Hardware Installation Guide
OL-12345-01
Chapter 2 Router Hardware Description
Hardware Features Detailed Description
Router Hardware Interior Features
This section includes detailed information about the interior hardware features illustrated in Router
Hardware Overview, page 2-2, and contains the following topics:
• Alarm Port, page 2-18
• Connected Grid Module Slots, page 2-19
• Reset Buttons, page 2-21
• Fast Ethernet Ports, page 2-22
• Gigabit Ethernet Ports, page 2-22
• Serial Ports, page 2-23
• Small Form-Factor Pluggable (SFP) Ports, page 2-24
• IRIG-B Timing Port, page 2-26
• USB Ports, page 2-27
• Memory, page 2-29
• GPS Module, page 2-29
• Short-Range Access Point, page 2-32
Alarm Port
Note Currently not supported. This hardware feature will be supported in a future software release.
Figure 2-13 Router Alarm Port
Attach the alarm port (see Figure 2-13) to an alarm system to monitor software events and errors, and
supports two alarm inputs and two alarm outputs.
The alarm-trigger setting determines when an alarm is sent to the attached alarm system.
Input Alarm Trigger Settings
• Open—The open setting indicates that the normal router operating condition has an electrical
current passing through the alarm circuits (DRY contact closed). If this electrical current is no
longer detected (DRY contact open), an alarm is generated.