Compaq RAID ARRAY 3000 EK-SMCPO-UG. C01 - Manual (Page 57)

RAID Array Controller 2-23
Compaq Confidential – Need to Know Required
Writer: Bob Young Project: RAID Array 3000 Pedestal Storage Subsystem Hardware User’s Guide Comments:
Part Number: EK-SMCPO-UG. C01 File Name: c-ch2 RAID Array Controller.doc Last Saved On: 12/4/00 1:51 PM
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