NGA-2000 System Calibration

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

Supplement - 26

NGA 2000

90003482(2) [NGA-e (MLT-Software 3.2.X)] 07/98