Quantel Ultra Big Sky Laser Series User Manual page 18

14 | Contents | Functions
BNC Connectors
Interlock Out: Use this BNC output to connect an external laser-
warning indicator. The signal output is low (pulled to ground) when the
laser is disabled. When the laser high voltage is enabled, this connection
outputs +15 VDC and up to 150mA.
CAUTION: This output is not short-circuit protected.
Interlock In: Use this BNC to connect an external safety shutdown
switch. For the laser to operate, this connector must be shorted. When this
circuit is open, the ICE450 high voltage is disabled and discharges in less
than 5 seconds. Install the attached BNC shorting cap on this connector if
this function is unnecessary.
Note: Multiple safety switches must be in a series connection.
Lamp In: This is a 50Ω-terminated input. A signal applied to this BNC
connector causes the flashlamp to fire if External Flashlamp Trigger Mode
is selected using the Remote Box or the serial interface. The source
of this signal must be capable of supplying a pulse with the following
External Trigger Signal Requirements on
characteristics: (See
page 52 for details.)
• Amplitude: +5V, acceptable range: {3.0V-5.0V}
• Pulse-width: 100µsec minimum
Version M 22-April-2012
Lamp Out
Interlock Out
Interlock In
Computer Serial Port
Interface (RS-232)
Figure 7: BNC Connector Locations ICE450
Q-Switch Out
Q-Switch In
Lamp In
Lamp Out:
Use this BNC connector to synchronize with the laser flashlamp
trigger signal. Flashlamp firing corresponds with the rising edge of this
positive signal, which is 5V, 50mA max, and greater than 10µS pulse width.
Q-Switch Out:
This BNC connector allows synchronization with the laser
Q-Switch trigger. The Q-Switch trigger corresponds to the rising edge of
this positive signal (5V, 50 mA max, and greater than 10µS pulse width).
Q-Switch In:
This is a 50Ω-terminated input. A signal applied to this
BNC connector causes the Q-Switch to trigger if External Q-Switch Trigger
Mode is selected using the Remote Box or the serial interface. The source
of this signal must be capable of supplying a pulse with the following
characteristics (See External Trigger Signal Requirements on
page 52
for details.)
• Amplitude: +5V, acceptable range: {3.0V-5.0V}
• Pulse-width: 100µsec minimum
Computer Serial Port Interface (RS-232):
connector to operate the system by remote computer control using the
standard RS-232 interface. See Software on page 34
configuration and the command set.
Note: To disable remote computer control, press any button on the
Remote Box.
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Use this DE-9S D-Sub
for details on port