NGA-2000 System Calibration

4.2.3.3 Zero Calibration

Before starting of zero calibration there are some parameters (LON-variables) to modify. After ending system calibration these modified variables are restored to their previous value.

∙

CONTROL:

This variable determines which instance is controlling range of an

 

 

AM. The parameter is set to "controlled by control module"

∙

ZERORNGS:

This variable determines if all ranges are zeroed together or

 

 

separately. The parameter is set to "zero all ranges together".

∙

AMSERPHYSTAT:

This variable exists only in a multi-channel AM (MLT!) and

 

 

determines if the AM has a serial/parallel gas flow.

 

 

The parameter is set to "parallel gas flow" because only this state

 

 

allows SYSCAL to calibrate the different channels simultaneously.

After modifying these parameters zero calibration is started by LON-variable:

∙ AMFN:

This variable can start functions on a AM. It is set to the value for

 

function "Zero".

4.2.3.4 Span Calibration

The span calibration can be done only in single ranges. Any action for a span calibration in a range can only be done if "spangas value <> 0.0".

Before starting then span calibration there are some parameters (LON-variables) to modify. After ending system calibration these modified variables are restored to their previous value.

∙

CONTROL:

This variable determines which instance is controlling range of an

 

 

AM. The parameter is set to "controlled by control module"

∙

CALRANGES:

This variable determines if all ranges are spanned together or

 

 

separately. The parameter is set to "span all ranges separately".

∙

AMSERPHYSTAT:

This variable exists only in a multi-channel AM (MLT!) and

 

 

determines if the AM has a serial/parallel gas flow.

 

 

The parameter is set to "parallel gas flow" because only this state

 

 

allows SYSCAL to calibrate the different channels simultaneously.

∙

CRANGE:

This variable controls the current range of an AM. It is set to the

 

 

respectively required range.

After modifying these parameters span calibration is started by LON-variable:

∙ AMFN:

This variable can start functions on a AM. It is set to the value for

 

function "Span".

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

NGA 2000

Supplement - 29