142
Cedex HiRes Analyzer Operator’s Guide
E
E
8.4 Locking – Unlocking the System
Measurements that are carried out after the validity period of an SST checkpoint has expired are marked as
invalid in the Audit Trail. In addition, the system may be locked for any further routine measurements except
SST measurements.
The System Status describes the capability of the system for performing certain tasks involving the hardware.
The current state of the system can be viewed in the Change System Status window, which is accessed by
selecting the Lock – Unlock System option in the System menu of the Control Center (see Figure 89).
The state of the system is set automatically depending on the validity of all SST checkpoints, and the
confi guration of the SSTFailureReaction parameter in the System Options. Depending on the confi guration,
if an SST checkpoint is out of date only SST measurements can be carried out. No routine measurements will
be possible (Current State: MeasurementLock). Once all SST checkpoints are up to date and valid again, the
system is fully usable and the Current State is automatically set to SystemOK.
In the event of a failed SST procedure, the system may be locked for any further measurements including
SST measurements (this is only the case if the SSTFailureReaction parameter in the System Options is set
on Restrict, see “Setting up the SSTFailureReaction in the System Options menu”). The Current State will be
automatically set to SSTLock.
The system status can be changed manually by authorized users. Manually changing the system status may be
necessary for a variety of reasons. For more details see the following table:
Manually set
System Status to:
Description of the manually set System
Status:
As a possible reaction to
the following automatic
System Status:
ManualLock
Any action involving hardware is
prohibited.
SSTManualUnlock
SST measurements (and any other
process involving the hardware except
routine measurements) are allowed.
SSTLock after failed SST
procedure.
MeasurementManualUnlock
System is fully usable but all measurements
a
re marked as “Invalid because of SST
failure” in the Audit Trail.
SSTLock,
SSTManualUnlock or
MeasurementLock
Warning
System is fully usable but there will be a
warning before a measurement is run, and
the measurements will be marked “Invalid
because of SST failure” in the Audit Trail.
SSTLock,
SSTManualUnlock or
MeasurementLock
SystemOK
System is fully usable until system re-
checks validity of SST checkpoints (which
is done at an interval of 300 sec.)
SSTLock,
SSTManualUnlock or
MeasurementLock
Table 3: Manually settable system status
Figure 89: System Status window
The System Suitability Test (SST)
Locking – Unlocking the System
To Next Page
Loading...
