Varian ProStar 325 UV-Vis, Руководство по обслуживанию

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ProStar325 Service Manual
Publication date 8 May 2003
59
NOT READY LAMP ON – Detector is not ready for starting a
run. It will be in this state after a lamp on and EnableIn is high,
and SyncInReady is also high. It will not leave this state unless it
receives one of the following;
•
LampOn command received or auto lamp on (2nd lamp)
•
A request to change into diagnostic state is received
•
It receives a low on SyncInReady
•
A lamp off (or AutoLampOff) is received. (2nd or both lamps off
now)
INITIALISING – Warm up time for the D2 lamp in preparation
for striking near the end of this state.
MONITOR – A post-setup autozero and collection, of the noise
level required by the user/host for peak sense. A message
interface command through user software is needed to disable the
monitor data collection (does not disable any AutoZeros or other
parts of the monitor).
This data collection is separate from the method collect data as it
is a fixed time length. When data is collected, the detector will
calculate relevant Peak Sense control information.
READY – Detector is now useable. Once the detector receives a
START IN, or command “Start” it will progress to RUNNING
state.
RUNNING – Method is currently being run and the method clock
is on.
STOPPED – Method clock has been stopped and the run method
can be restarted through START IN or method “Start” command.
DIAGNOSTIC – This is a special state that allows some actions
to happen out of sequence or without certain pre-requisites being
met, i.e. can start collecting data when no lamps are on for
instance.
In this state the detector cannot perform actual user data
collection. It is intended for faultfinding purposes only.
It will only exit this state when a Diagnostic command to exit
Diagnostics state is received.
POWER ON – This state is the initial power up. Detector is
loading up its internal systems before it begins its start up phase.
It loads the FPGA, checks the hardware and configuration.
During this state all user intervention is disabled.
Shown below is a table of detector states and the status of SYNC
signals for each state;
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