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NGA-2000 System Calibration
Supplement - 26 NGA 2000 90003482(2) [NGA-e (MLT-Software 3.2.X)] 07/98
4.2.1 Filling sequence buffer
The contents of the sequence buffer depends on
• calibration types and belonging module type
• coherence of modules and system valves
An evaluation procedure has the choice of listed action types.
Calibration types module type action types action data
NOP ALL-AMs USER-STEP Nr
ZERO-CAL single AM SWITCH_VALVE mask
SPAN-CAL Evaluation- PURGEWAIT time
ZERO/SPAN-CAL procedure ZERO AM
SPAN1-CAL SPAN AM range
SPAN2-CAL CALWAIT AM
SPAN3-CAL
SPAN4-CAL
END-OF-PGRM
One calibration type has following sequence frame:
1. SWITCH_VALVE
2. do different PURGEWAIT, ZERO, or SPAN which are possible with this valve adjustment
(order is determined by shortest purge time)
3. do different CALWAIT (wait for finishing a started calibration)
The evaluation procedure optimizes the order of actions by time.
The only condition is in case of ZERO/SPAN-CAL, where an AM has to do first its "ZERO"
before any of its "SPAN"s can be done.
The PURGEWAIT-delay-measurement is started with the last SWITCH_VALVE-action.
We can see, that the SYSCAL-types "ZERO_ALL" and "ZEROSPAN_ALL" are special cases
of a user program.
• ZERO_ALL: ZERO-CAL of ALL-AMs
• ZEROSPAN_ALL: ZERO/SPAN-CAL of ALL-AMs