Cisco Laser Link Return Digital Receiver with Ethernet Guida All'Installazione
78-4028521-01 Rev B
General Information
1-5
Laser Link III Mainframe Description,
Continued
Important: Wire gauge specifications for 24 V DC/15 A input are as follows:
10’ cable: 12 AWG minimum
10’ cable: 12 AWG minimum
5’ cable: 15 AWG minimum
Terminal Block
Normally open (NO) and normally closed (NC) contact points are available on the
terminal block (J11) of the power distribution board. These interface points allow
you to trigger an external alarm should the general operation alarm of the
mainframe toggle to an alarm state. The number five position of the terminal block
may be utilized in conjunction with the common position, number six, in a normally
closed alarm relay. The number seven pin may be used in conjunction with the
common position in a normally open alarm relay configuration. Under normal
operation (no alarm), number six and number five are closed.
Status Monitoring
Status of housed modules is supplied to users via front panel LEDs, or the ROSA
™
Element Management System, or TNCS Element Management System (if used). The
available monitored parameters are provided in the respective module manuals.
Status monitoring signals are routed from the rear of the module to the power
Status monitoring signals are routed from the rear of the module to the power
distribution board. This is accomplished by connecting the module’s DB15, DB26, or
DB9 connector to the respective DB26 connector on the power distribution board
using the interface cable provided with each module. From the board, signals are
available to the user panel (J12), the element management system interface point (J8),
and the telemetry interface point (J9A and J9B).