Rotary - 20μm grating pitch

Rotary

Fundamental

Interpolation

Glass Scale

Resolution

Diameter

0.472” [12.00mm]

1650 CPR

x4

x8

x20

x40

interpolated resolution (CPR)

6,600

13,200

33,000

66,000

interpolated resolution (arc-sec/count)*

196.4

98.2

39.2

19.64

interpolated resolution (µrad/count)*

952

476

190.3

95.2

maximum speed (RPM)

13090

13090

13090

13090

0.750” [19.05mm]

2500 CPR

x4

x8

x20

x40

interpolated resolution (CPR)

10,000

20,000

50,000

100,000

interpolated resolution (arc-sec/count)*

129.6

64.8

25.9

12.96

interpolated resolution (µrad/count)*

628

314

125.6

62.8

maximum speed (RPM)

8640

8640

8640

8640

1.250” [31.75mm]

4096 CPR

x4

x8

x20

x40

interpolated resolution (CPR)

16,384

32,768

81,920

163,840

interpolated resolution (arc-sec/count)*

79.1

39.6

15.82

7.91

interpolated resolution (µrad/count)*

383

191.7

76.6

38.3

maximum speed (RPM)

5273

5273

5273

5273

2.250” [57.15mm]

8192 CPR

x4

x8

x20

x40

interpolated resolution (CPR)

32,768

65,536

163,840

327,680

interpolated resolution (arc-sec/count)*

39.6

19.78

7.92

3.96

interpolated resolution (µrad/count)*

191.7

95.8

38.3

19.17

maximum speed (RPM)

2637

2637

2637

2637

4.250” [107.95mm] 16384 CPR

x4

x8

x20

x40

interpolated resolution (CPR)

65,536

131,072

327,680

655,360

interpolated resolution (arc-sec/count)* 19.78

9.89

3.96

1.978

interpolated resolution (µrad/count)*

95.8

47.9

19.16

9.58

maximum speed (RPM)

1318

1318

1318

1318

* Resolution values shown are approximate. To calculate exact resolution values, convert from CPR (Counts Per Revolution) to the desired units.

Note: Specifications assume XOR function which is available in all standard controllers.

All Specifications are subject to change. All data is accurate to the best of our knowledge. MicroE Systems is not responsible for errors.

Linear - 20μm grating pitch

Interpolation

Resolution

Maximum Speed

x4

5.000µm/count

7200mm/s

x8

2.500µm/count

7200mm/s

x20

1.000µm/count

7200mm/s

x40

0.500µm/count

7200mm/s

System Specifications

Resolution and Maximum Speed

Mercury 1500P systems have factory set interpolation: x4, x8, x20, x40. Below is the table of available resolutions.

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