Oxford Instruments Cypher SPM, Руководство пользователя

Страница: 12 / 243

Cypher SPM
User Guide
l
The motor control knob at the lower front of the Cypher can be used at any time to override
computer commanded objective lens or cantilever holder motor moves. Turning the knob will
immediately stop any current motor moves and will transfer control of both the cantilever
holder and objective motion to the knob.
Note: Turning the knob always moves BOTH the cantilever holder and the objective lens
simultaneously. This means that if your finger is pinched between the cantilever holder and
the objective lens, the best way to release your finger is to use the software to motor the
objective lens upwards while leaving the cantilever holder stationary.
l
Press and hold down the Esc key on the PC keyboard. This stops any automated motor moves.
l
Turn off the ARC2 controller or unplug the power brick, which is connected to the Cypher SPM.
Note: We do not generally recommend these methods because then you cannot use the
knob or software to control the motors and manually move them to a safer position.
l
If the power is cut and you must move the objective, you can reach inside the enclosure and
feel for a wheel at the lower left hand side near the rear of the chassis. This wheel turns the
motor manually. Ten turns are required for every millimeter of objective motion. Turn clock-
wise to move the objective down and counter-clockwise to move the objective up.
2.5 Light source safety
Use of controls or adjustments or performance procedures other than those spe-
cified herein may result in hazardous invisible laser energy exposure.
Note: While it is safe to operate the system with the optical system cover removed, keep it in
place at all times to avoid the temptation of touching the inner workings around the laser
optical path.
2.5.1 Non-visible laser diode or SLD light
The Cypher SPM contains a laser diode (LD) or super luminescent diode (SLD) light source. SLDs are
like lasers, but have a shorter coherence length. As of the writing of this manual, all Cypher light
sources have an output of several mW around 850 nm, which is non-visible.
From a safety perspective LDs and SLDs can be regarded as identical and the terms will be used
interchangeably.
The Cypher laser is sufficiently well shielded that the Cypher SPM qualifies as IEC Class 1 laser
product that complies with 21 CFR 1040.10 and 1040.11, except for deviations pursuant to Laser
Notice No. 50, dated 24 June 2007. It complies with IEC/EN 60825-1, Ed.2:2007.
In layman’s terms this means the Cypher SPM is in the same class as a home DVD player, and in a
safer class than a laser pointer. When used as prescribed there is no danger of exposure. Non-
2 Health and safety Page 12 of 243