Motorized Filter Wheel Chapter 4: Basic Operation
Rev H, October 2, 2014 Page 8
FW102CNEB FW212CNEB
Filter Item # Optical Density Position Filter Item # Optical Density Position
Blank
N/A 1
Blank
N/A 1
NE05B
0.5 2
NE501B
0.1 2
NE10B
1.0 3
NE502B
0.2 3
NE20B
2.0 4
NE503B
0.3 4
NE30B
3.0 5
NE504B
0.4 5
NE40B
4.0 6
NE505B
0.5 6
-
- -
NE506B
0.6 7
-
- -
NE510B
1.0 8
-
- -
NE513B
1.3 9
-
- -
NE520B
2.0 10
-
- -
NE530B
3.0 11
-
- -
NE540B
4.0 12
Once the filter wheel has been populated with filters and properly installed, the process of reassembling the filter
wheel goes as follows: slip the wheel over the shaft and turn slightly to allow the gears to mesh, replace the cover
and tighten the thumb screw. It is not necessary to return the wheel to any particular orientation; the unit will
reorient automatically when the power is turned on.
Mounting
4.2.
The base of the unit contains an array of mounting holes for attaching to steel posts or directly to other mounting
plates. See Figure 3 below for whole sizes and locations.
Figure 3 Filter Wheel Mounting Holes
The filter wheel cover contains SM1 threads for attaching lens tubes or for mounting the unit directly to cameras,
microscopes, and telescopes. The filter wheel can be attached directly to Thorlabs’ 30 mm cage systems via four
4-40 tapped holes that surround each port.
Power
4.3.
The unit comes with an AC wall adapter to supply 12 VDC to the unit. Plug the 2.1 mm plug from the AC adapter
into the DC input jack on the unit. The ON/OFF (0/1) switch is located on the side of the unit. Upon power up, the
unit will display the filter number that is located at the selected aperture. If the wheel is not located at a valid
location, it will rotate to the closest valid position.
Power Supply Input Voltage Rating: 90-264 VAC, 47-63 Hz
Thorlabs Filter Wheel Max Voltage Input: 12.6 V DC Max Current Input: 2.08 A
0.61"
(15.56 mm)
0.43"
(10.8 mm)
0.13"
(3.18 mm)
M6-1.0 -6H
0.319" (8.10 mm)
(2 Places)
1/4"-20 UNC
0.312" (7.92 mm)
(2 Places)
M4-0.7 -6H
0.312" (7.92 mm)
8-32 UNC
0.328" (8.33 mm)
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