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Signal name
No light
External Input
Acceptable
Output Signal Circuits
The output signal circuit schematic diagrams for the EXT. I/O (1) and EXT. I/O (2) connectors
are shown respectively in Figures 3-5 and 3-6.
Output Signal Specifications
Output Signal Specifications, EXT I/O (1) Connector. The output signal
specifications are as follows:
Pin No. 1 -- 2, Ready: When HV-ON is turned on and the capacitor is charged to the
set voltage, this circuit is closed to output the signal.
Pin No. 3 -- 4, High voltage ON: When high voltage is applied to the laser, this
circuit is closed to output the signal.
Pin No. 5 -- 6, Trouble: When the laser malfunctions, this circuit is kept closed to
output the signal until the Trouble Reset signal is input.
Pin No. 7 -- 8, Finish (END) signal: This signal is output for 50 msec after one shot
of laser oscillation is finished.
Pin No. 9 -- 10, Monitor normal: This signal is output for 50 msec when the laser
power monitor value is within the set range between LOW and HIGH. This signal is
not output, however, when the NO-LIGHT signal is indicated.
Pin No. 11 -- 12, Monitor trouble: This signal is output for 50 msec when the laser
power monitor value is out of the set range between LOW and HIGH or the NO-
LIGHT signal is indicated.
Pin No. 13 -- 14, External Input enable: When this circuit is closed, the laser can
receive external signals.
Output Signal Specifications, EXT I/O (1) Connector
990-605 REV B: May, 1997
Closes when the laser is not output or detected laser power is
below 0.3 Joules
External signal input is enabled
Maximum output rating: 30V, 20 mA
LW250 PULSED Nd: YAG LASER
CHAPTER 3: I/O SIGNAL INTERFACE
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