Newport New Focus 3502, Руководство пользователя

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3.5.1
Front Panel Operation
The Model 3502 Optical Chopper can be operated manually by keying in control
functions from the Chopper Controller front panel shown below.
Figure 14: Model 3502 Optical Chopper Controller front panel.
Wheel Button
The User may select from different wheels to accommodate the chopping
frequency of interest. Single- or double-slot wheels are provided for single- or
dual-path experiments. The table below summarizes the provided wheel
selection and each wheel’s choppin g frequency range.
Wheel Type
(slots)
Lowest Frequency
(F
outer
)
Highest Frequency
(F
outer
)
100 200 Hz 10.65 kHz
60 120 Hz 6.40 kHz
42/30 84 Hz 4.48 kHz
7/5 14 Hz 746 Hz
2 4 Hz 213 Hz
60/2
See text See text
F
outer
is the chopping frequency as measured by an optical pick-up on the Model
3502 Optical Chopper Head. If a wheel has two sets of slots, F
outer
refers to the
chopping frequency of the slots on the outer edge of the wheel. To change the
wheel type, push the Wheel button until the LED lights under the desired wheel
type.