Technical Documentation
TX Matrix Craft Interface Overview
Craft Interface Front Panel
The craft interface allows you to view status and troubleshooting information at a glance and to perform many system control functions. It contains LEDs, buttons, and an LCD display showing status messages for the TX Matrix router. The craft interface is located on the lower front of the TX Matrix router below the air filter. It is hot-insertable and hot-removable.
Figure 1: Front Panel of the Craft Interface
TX-SIB Online/Offline Buttons
Each TX-SIB also has a button that you use to take the TX-SIB offline and bring it online. The button is located next to the TX-SIB LEDs on the top of the craft interface.
LCD display and Navigation Buttons
A four-line LCD display is located in the craft interface, along with six navigation buttons. The LCD display operates in two modes, as described in the following sections:
LCD Display Idle Mode
During normal operation, the LCD display operates in idle mode and reports current status information, as shown in Figure 2.
Figure 2: LCD display in Idle Mode
The lines in the display report the following information:
- First line—TX Matrix router name.
- Second line—Length of time the TX Matrix router
has been running, reported in the following form:Up days + hours:minutes
- Third and fourth lines—Status messages, which rotate at 2-second intervals. Some conditions, such as removal or insertion of a system component, can interrupt the messages.
To add a message that alternates every 2 seconds with the default
status messages, use the set chassis display message command. For more information, see the Junos OS System Basics and Services Command Reference 
.
LCD Display Alarm Mode
When a red or yellow alarm occurs, the LCD display switches to alarm mode and reports about the alarm condition, as shown in Figure 3.
Figure 3: LCD Display in Alarm Mode
The lines in the display report the following information:
- First line—TX Matrix router name.
- Second line—Number of active alarms.
- Third and fourth lines—Individual alarm messages, with the most severe condition shown first. The prefix on each line indicates whether the alarm is a red (R) or yellow (Y) alarm.
