INFICON XTC/C Thin Film Deposition Controller - Manual (Page 82)

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XTC/C - XTC/2 Operating Manual
3.7.2 Inputs
Inputs are activated by pulling the specific input's terminal to ground (<0.8V)
through a contact closure to common (GND) or with TTL/CMOS logic having
current sink capability of 2 ma (1 low power TTL load). These ports are read
every 250 ms; signals must be present during a read cycle.
Table 3-6 System I/O Connector
Input # Pin # Function Description
13,14,15,
16,17
Input Common
(GND) Used as reference for activating any of
the inputs
1 18 START deposition Detection of a falling edge duplicates
front panel START
2 19 STOP deposition Detection of a falling edge induces a
STOP
3 20 END deposit Detection of a falling edge terminates
the Deposit state just as if the FINAL
THK were achieved.
Configuration switch #12 set for "Standard" Input Option:
4 21 SAMPLE INITIATE Detection of a falling edge initiates a
RateWatcher sample if the film is
programmed for this feature.
5 22 SAMPLE INHIBIT Application of a ground reference
voltage maintains the RateWatcher in
the Hold condition.
6 23 CRYSTAL FAIL
INHIBIT Application of a ground reference
voltage prohibits the closure of the
Crystal Fail Relay and the associated
Stop.
7 24 ZERO thickness Detection of a falling edge duplicates
the front panel ZERO.
8 25 SOAK 2 HOLD Application of a ground reference
voltage extends the SOAK 2 state until
the signal/closure is removed.