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RSH-600 Operating Manual
2.9 Crystal Position Feedback Connections
The crystal position connector has seven pins. Pin numbers 1 through 6
correspond to the six crystals and pin number 7 is the common pin. A short
between pin 7 and one of the pins 1 through 6 indicates the active crystal. For
example, if pin 7 is shorted to pin 1, then crystal 1 is the active crystal.
Use this connector to interface with the controller for automatic crystal selection.
Refer to the controller operating manual for programming instruction.
Figure 2-7 Crystal position connector
Figure 2-8 Mating connector (male) - crystal position connector
RSH-600 provides a switch closure through connector J2 that can be used to
indicate which crystal is active at a given time. Switch closure will be affected by
crystal positions.
Figure 2-9 Crystal position feedback diagram (crystal 1 is the active crystal)
2.10 Protection from Evaporant
Place aluminum foil over the RSH-600 head cover and barrel to protect them from
evaporants during a vacuum operation.
1
2
3
4
5
6
7
6
5
4
3
2
1
7
Common
Crystal 1
Crystal 2
Crystal 3
Crystal 4
Crystal 5
Crystal 6
1
2
3
4
5
6
7