MX-2100/2104
Installation and Operation Manual
Chapter 5 Diagnostics
Diagnostic Tests
5-9
User or Test
Equipment
Remote
MX-2100
Local
MX-2100
User or Test
Equipment
Figure 5-1. Local Main Link Loop, Signal Path
Local Main Link Loop – Normal Indications and Fault Isolation
•
The TEST indicator of the local MX-2100 lights.
•
The TXD and RXD indicators of the local MX-2100 must light. If not, the local
MX-2100 is defective.
•
The SYNC LOSS indicator of the local MX-2100 must be off. If it lights, the
local MX-2100 is defective.
Do not set up a local loop in a remote MX-2100 with in-band management. Doing
so could cause the main link connection to be lost.
Remote Main Link Loop
As a rule, connect the remote main link loop only if both MX-2100s pass the local
main link loop test successfully.
Remote Main Link Loop – Signal Path
The remote loop is connected on the local MX-2100 unit, i.e., the local KML
module returns the received signal toward the remote MX-2100. The loop signal
path is shown in
Caution
