HEDS-9000T HP [Agilent(Hewlett-Packard)], HEDS-9000T Datasheet - Page 8

• Manufacturer Part Number: HEDS-9000T
• Description: Two Channel High Resolution Optical Incremental Encoder Modules
• Manufacturer: HP [Agilent(Hewlett-Packard)]

Recommended Codewheel Characteristics
Recommended Codestrip Characteristics and Alignment
Codestrip design must take into consideration mounting as referenced to either side A or side B (see Figure 4).
Figure 4. Codestrip Design
Note: All parameters and equations must be satisfied over the full length of codestrip travel including maximum codestrip runout.
STATIC CHARGE WARNING: LARGE STATIC CHARGE ON CODESTRIP MAY HARM MODULE.
PREVENT ACCUMULATION OF CHARGE.
Window/Bar Ratio
Window Length
Absolute Maximum
Codewheel Radius
Window/Bar Ratio
Window Distance
Window Edge to
Module Opt Center Line
Parallelism
Module to Codestrip
Parameter
Mounting as Referenced to Side A
Parameter
Symbol
w
L
R
/
w
c
b
Symbol
W
w
L
S
/W
Minimum
1.8 (0.07)
b
0.7
0.7 min., 1.4 max.
0.90 (0.035) min.
L
Mounting Ref.
a
1.3 max.
0.51 (0.020)
Side A
R
+
Maximum
op
1.4
(0.075)
1.9
Mounting as Referenced to Side B
mm (inch)
0.7 min., 1.4 max.
0.90 (0.035) min.
L
Mounting Ref.
b
(inch)
Units
8
mm
1.3 max.
3.23 (0.127)
Side B
Includes eccentricity
errors
Notes
mm (inch)
mm (inch)
Units
deg.