Cisco Model GS7000 4-Port Node 1 GHz with 42 54 Split Installation Guide
Chapter 4 Troubleshooting
36
4022871 Rev C
2 If the LCM configuration is correct, then follow the procedures in the next
section to check for an operating condition that could cause the alarm.
Real Operating Condition Problems
Complete the following steps to determine what operating condition alarms exist.
1 Connect the Model 91200 Handheld Programming Terminal to the local control
1 Connect the Model 91200 Handheld Programming Terminal to the local control
port on the LCM. Refer to Configuring the LCM Using the Model 91200
Handheld Programming Terminal (on page 23) for instructions.
Handheld Programming Terminal (on page 23) for instructions.
2 Use menu item 1 - RX & TX Config to check which receivers and transmitters
are set as Present or Absent in the node. The configuration settings must match
what is physically installed and operating.
what is physically installed and operating.
3 Use menu item 2 - PS Config to check which AC lines and PS modules are set as
Present or Absent in the node. The configuration settings must match what is
physically installed.
physically installed.
4 Use menu item 3 - RX Thresholds to check the RX threshold levels. Are they
correct? If not, reset the values.
5 Use menu item 4 - TX Thresholds to check the TX threshold levels. Are they
correct? If not, reset the values.
6 Use menu item 6 - Rx & Tx Power to check the operating power levels against
set threshold levels for alarms from steps 4 and 5.
7 Use menu item 7 - Power Supplies to check the power supply measurements for
out-of-range values.
Note: The thresholds for the power measurements are neither shown nor
settable via the handheld terminal. These thresholds are hard-coded.
Note: The thresholds for the power measurements are neither shown nor
settable via the handheld terminal. These thresholds are hard-coded.
Red STATUS LED Flashing Fast
If STATUS LED is flashing fast, one or both of the secondary receivers is being
turned on, i.e., redundancy is in use.
turned on, i.e., redundancy is in use.
Complete the following steps to verify that the redundancy switching is correct.
1 Connect the Model 91200 Handheld Programming Terminal to the local control
1 Connect the Model 91200 Handheld Programming Terminal to the local control
port on the LCM. Refer to Configuring the LCM Using the Model 91200
Handheld Programming Terminal (on page 23) for instructions.
Handheld Programming Terminal (on page 23) for instructions.
2 Use menu item 5 - Node Setting, sub-menus 5.1 - AB Switch 1 and 5.2 AB
Switch 2, to check the settings of the AB switches (Preferred A, Preferred B,
Forced A, or Forced B). If not set correctly, reset as required.
Forced A, or Forced B). If not set correctly, reset as required.
3 Use menu item 6 - Rx & Tx Power to check the optical power levels of the
receivers against their set thresholds in menu item 3 - RX Thresholds. This
allows you to see which primary receivers have failed and had their
corresponding secondary receivers turned on. Use menu item 0 - RX Status to
verify the status of the corresponding receivers.
allows you to see which primary receivers have failed and had their
corresponding secondary receivers turned on. Use menu item 0 - RX Status to
verify the status of the corresponding receivers.