Model 621 User’s Manual LASER INPUT – VIS AND NIR VERSIONS
Bristol Instruments, Inc. 10
3 LASER INPUT – VIS AND NIR VERSIONS
Fiber-Optic Laser Input
This instrument is a Class 2 Laser Product. It contains a laser that emits radiation
that can seriously damage your eyesight. Less than 15 W of this laser light is
emitted from the fiber-optic connector of the VIS and NIR versions,
and less than 50 W of this laser light is emitted from the aperture of
the IR and MIR versions. Do not stare into this beam or view it
directly with an optical instrument. The Class 2 warning label, shown
here, is located next to the fiber-optic input coupler (VIS and NIR) or
the input aperture (IR and MIR) on the front panel of the model 621.
Never inspect or clean a fiber-optic cable without first disconnecting the entire
cable assembly from the optical source. Failure to take this precaution can
permanently damage your eyesight.
Use care in handling fiber-optic connectors. Always clean the fiber end prior to insertion
into the instrument’s fiber-optic connector for optimum performance. Failure to do so can
result in damage to the instrument. To prolong instrument service life, it is advantageous
to attach a new fiber-optic patchcord to the instrument and use its other end for the
connect/disconnect procedure.
Maximum safe input is 10 mW of optical power. Laser input power in excess of 10 mW
can result in damage to the instrument.
The laser under test enters the 621 system through an FC/PC fiber-optic connector on
the front panel of the instrument (Figure 3.1).
Figure 3.1: Front Panel of the VIS and NIR Versions