HEDS-974X Datasheet, PDF (4/6 Pages) Agilent(Hewlett-Packard) – 180, 300, 360 LPI Small Optical Encoder Modules

Recommended Codewheel and Codestrip Characteristics
Parameter
Window/Bar Ratio
Center of Post to Inside
Edge of Window
Center of Post to Outside
Edge of Window
Center of Post to Inside Edge
of Codestrip
Symbol
Ww/Wb
W1
W2
L
Min.
0.7
1.04
(0.041)
0.76
(0.030)
Max.
1.4
3.60
(0.142)
Units
mm
(inch)
mm
(inch)
mm
(inch)
Notes
Mounting Considerations
4.44 ± 0.13
0.175 ± 0.005
Rm
IMAGE SIDE OF
CODEWHEEL/CODESTRIP
E_A
For linear motion, angular misalignment, E_A, must be ≤ ± 2 degrees to achieve Encoding Characteristics.
All dimensions for mounting the module and codestrip should be measured with respect to the two mounting posts, shown above.
Recommended Screw Size: M2.5 x 0.45 or 2-56
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