INFICON SRT-422 Crucible Indexer - Manual (Page 21)

Operation Page 19
Section 2.5: Clockwise vs. counterclockwise pocket numbering
When planning multipocket deposition—with the indexer in either unidirectional or
bidirectional mode, bear in mind that the orientation of pocket numbering is determined by the
setting of internal DIP switch 5. This means that the direction of “forward” rotation (i.e., rotation
“upward” through the pocket numbers) depends on whether DIP switch 5 is set for clockwise or
counterclockwise rotation. The Figure below shows what this means for indexer operation with
a standard 4-pocket source. The pockets of such a source must be thought of as being
numbered 1-4 in a counterclockwise direction when DIP switch 5 is on and 1-4 in a clockwise
direction when switch 5 is off. The same principle applies to all multipocket sources.
1
4
3
2
DIP Switch 5
ON
4
3
1
2
HOME HOME
DIP Switch 5
OFF
Figure 2.2: How the orientation of pocket numbering depends on the setting of DIP switch 5.
Section 2.6: Indexer operation with standard multipocket sources
The SRT-422 operates any standard 3-, 4-, 5-, 6-, or 8-pocket source that has internal 4:1 gear
reduction. When the internal DIP switches are configured for one of these source types,
operation of the indexer is straightforward. After the pocket selection has been changed either
manually via the front-panel thumbwheel or automatically by a remote device, the indexer
rotates the hearth to that pocket position at a constant rotational speed and then stops.
4-pkt. standard
(code 1)
6-pkt. standard
(code 3)
8-pkt. standard
(code 5)
Figure 2.3: Standard 4-, 6-, and 8-pocket hearths