CONTROLS AND INDICATORS
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TMP (Temperature) LED illuminates green to indicate laser temperature is within limits and
lasing may be enabled; the LED is red, and lasing is disabled if coolant temperature or flow rate is
outside operating limits.
RDY (Ready) LED illuminates yellow when the laser is enabled, indicating that, after a five-
second delay, lasing will begin when a PWM Command signal is applied.
SHT (Shutter) LED illuminates blue to indicate that the electromechanical shutter is Open and
lasing is enabled. The SHT LED is off, and lasing is disabled if the shutter is Closed.
LASE LED illuminates red to indicate the I401 is actively lasing.
Important Note: When mounting optical components to i401 lasers, the 8–32 UNC fasteners
must extend no
further than 6.35 mm (0.25") into the laser’s faceplate.
Figure 3-2 i401 rear panel controls and indicators
5 User I/O Connector – provides a connection point for auxiliary output power, as well as input
and output signals. Refer to the Technical Reference section for pinouts and signal descriptions.
6
Gas Purge Port/Assembly – provides a low-pressure nitrogen (or pure air) connection to
prevent dust and debris from damaging electronic or optical components inside the housing.
7
WATER IN Port – provides a 12 mm inlet connection to i401 cooling system for 12 mm O.D.
cooling tubing.
8
WATER OUT Port – provides a 12 mm outlet connection from i401 cooling system for 12 mm O.D.
cooling tubing.
