00196577-03 JG S-Feeder Care Test Station EN - 第47页

Performing the Test – Test with feeder feducial (for 2x8mm S Fe eder only) 47 NOTICE Position of sprocket wheel The absolute position of the spr ocket wheel will then be measured against the feeder adapter. This mig ht c…

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Performing the Test – Test with feeder feducial (for 2x8mm S Feeder only)
46
– Test with feeder feducial (for 2x8mm S Feeder only)
At some 2x8mm feeder the feeder feducial might be dam-
aged so that it cannot get recognized anymore. In this case
the measurement can be deactivated in order to measure
the feeder anyway.
Performing the Test – Test with feeder feducial (for 2x8mm S Feeder only)
47
NOTICE
Position of sprocket wheel
The absolute position of the sprocket wheel will then be measured against the feeder adapter. This might cause
an additional offset (up to 100µm in transport direction and up to 200µm across transport direction), so that the
measurement can exceed the tolerance corner (see chapter 5.2.3.1 "measurement result out of tolerance). Some
of dots are then outside the orange lines.
The feeder however might still be suitable to use (e.g. for chips >= 0805), as long as the repeatability is still good
(measurements are within the blue tolerance lines).
Performing the Test – Test with feeder feducial (for 2x8mm S Feeder only)
48