Central Processing Unit (CPU) Module


The Central Processing Unit (CPU) module controls and monitors Timing Signal Generator operation. It also provides a common interface for operator control of the modules. The module's LEDs are described in the following table.

LED Indicator

Color

Description

RUN

Green

On = The module is receiving power and processor is operational.

Off = Processor is not operational

MINOR

Yellow

On = A failure exists

POWER

Yellow

One of the -48 V power inputs have failed

CPU

Red

On = Microprocessor has malfunctioned and caused a major alarm

SYS

Red

On = A hardware fault within the TSG system has occurred and caused a major alarm.

MAJOR

Red

On = Loss of synchronization - immediate action is required

COMM ACTIVE A

Green

On = Front panel EIA-232 port is in use. This indicator is used only during data transfer.

COMM ACTIVE B

Green

On = Rear panel EIA-232 port is in use. This indicator is used only during data transfer.

ENET

Green

On = Ethernet packets transmitted or received

A logical representation of the CPU module with CPU and Alarm status is shown below. The screen's fields are described in the table below.

Field/Section

Description

CPU Status

 

Mode

Indicates mode of CPU module. Values: Run or Halt

Status

Indicates status of CPU module. Values OK or Failed

Alarm Status

Indicates whether any alarms are currently active

Alarm

Indicates the alarm number

AID

Indicates alarm AID

Notification Code

Indicates alarm level. Values: Critical, Major, or Minor

Condition Type

Condition type for alarms or events

Service Affecting

This field Indicates whether an alarm response message affects service. Values: SA or NSA

Description

Text description of the alarms indicated