Compaq EK-SMCPO-UG. C01 manual Voltage Monitoring, Acceptable System Voltage Levels

RAID Array Controller 2-23

Voltage Monitoring

System Voltage

The controller monitors the incoming system voltage levels and ensures that they are satisfactory for controller operation. The acceptable voltage levels are listed in Table 2–7.

Table 2-7

Acceptable System Voltage Levels

State	Range	Action
Normal	4.80 to 5.25 V	Normal operation
Low warning	4.75 to 4.80 V	Alarm
High warning	5.25 to 5.30 V	Alarm
Low severe	Less than 4.75 V	Off line
High severe	Greater than 5.30 V	Off line

Termination Voltage

The controller monitors the incoming termination voltage levels and ensures that they are satisfactory for controller operation. The acceptable voltage levels are shown in Table 2–8.

Table 2-8

Acceptable Termination Voltage Levels

State	Range	Action
Normal	4.20 to 5.40 V	Normal operation
Low warning	4.00 to 4.20 V	Alarm
High warning	5.40 to 5.55 V	Alarm
Low severe	Less than 4.00 V	Off line
High severe	Greater than 5.55 V	Off line