NGA-2000 System Calibration

4.2 Running system calibration

The system calibration is running in an own Task. This task is only allowed to run once. Any try to restart this task is refused.

The main steps SYSCAL-Task has to do are realized in the following way.

1.Fill all actions to do into a sequence buffer.

2.Make some preparations before starting the actions

3.Work through the sequence buffer

4.Restore states and make some other finishing work

The contents of the sequence buffer depends on the type of SYSCAL (ZERO_ALL, ZEROSPAN_ALL or USER_PROG). With the start command this type is delivered.

It is allowed to cancel the SYSCAL-task. This is realized by setting a parameter to a defined value. This parameter is watched during step 3("working through the sequence buffer").

If a cancel is caused the task cancels its current action in step 3, works through step 4 and ends.

Cancelling the SYSCAL-task per digital input will also disable any further starting action as long as the digital input will stay at „cancel-state“.

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

NGA 2000

Supplement - 25