Optical Encoders

Grayhill specializes in human interface optical encoders that provide excellent tactile feedback to the user. The greatest advantage of optical encoders is their non-contact switching technology which results in an exceptionally high operational life.

Although the end-product may vary, typical applications measure discrete digital position or rotational angle. Output options include absolute or quadrature 2-bit binary code.

Custom shaft and threaded bushing sizes are available. To increase the functions in one control, Grayhill offers optical encoders with concentric shafts, joysticks and pushbuttons integrated into compact devices.

Engineering information for optical encoders:

• Engineering information for electrical interface

Typical applications include:

• Healthcare electronics, including patient
  monitors, ventilators and imagers
• Communication systems, including twoway
  radios and software defined radios
• Navigation devices for ground vehicles
  and avionic systems
• Precision test and measuring equipment
• Sound mixing and editing consoles
• Automotive climate control and
  entertainment systems

Customization can include:

• Custom detents (clicks) and tactile feel
• Modified shaft lengths and flats
• Multiple termination and cabling options
• Custom electronics for unique outputs
• Special packaging such as custom mounts

Human Interface Optical Encoders

Product Image	Series	Link	Features	Resolution (PPR)	Body Size inches [mm]	Depth Behind Panel
	62A,D,V		D = high detent, V = 3.3 Vdc	12, 16, 20, 24, 32	.500 x .540 [12,70 x 13,71]	.525 [13,33]
	62AG 62VG		Price competitive solution AG = 5Vdc, VG = 3.3Vdc	16, 20, 24, 32	.500 x .540 [12,70 x 13,71]	.532 [13,51]
	62B		Push and pull to select functions	16, 32	.687 [17,45] diameter	1.080 [27,43]
	62C		Concentric shafts	12, 16, 20, 24, 32	.500 x .580 [12,70 x 14,73]	.933 [23,69]
	62F		LED for knob illumination	12, 16, 20, 24, 32	.500 x .540 [12,70 x 13,71]	.657 [16,68]
	62H		High torque, concentric shaft	8, 12, 16	.750 x .740 [19,05 x 18,80]	.878 [22,30]
	62HN		HT, non-turn pushbutton shaft	8, 12, 16	.750 x .740 [19,05 x 18,80]	.785 [19,93]
	62HR		High torque, redundant output	8, 12, 16	.750 x .740 [19,05 x 18,80]	.860 [21,84]
	62HS		High torque, short behind panel	8, 12, 16	.750 x .740 [19,05 x 18,80]	.545 [13,84]
	62M		Magnetic detent, 3M cycles	16, 24	1.100 [27,97] diameter	.686 [17,42]
	62N		Non-turn pushbutton shaft	12, 16, 20, 24, 32	.500 x .540 [12,70 x 13,71]	.670 [17,01]
	62NG		Non-turn pushbutton shaft	16, 20, 24, 32	.500 x .580 [12,70 x 14,73]	.512 [13,00]
	62R		Redundant output	12, 16, 24, 32	.500 x .540 [12,70 x 13,71]	.933 [23,69]
	62S		Minimal depth behind panel	8, 12, 16, 20, 24, 32	.500 x .540 [12,70 x 13,71]	.289  [7,34]
	62SG		Minimal depth behind panel	16, 24, 32	.500 x .580 [12,70 x 14,73]	.272  [6,91]
	62T		Thumbwheel	16	.780 x 1.770 [19,81 x 44,95]	.750 [19,05]
	61A		Absolute coding	8, 16, 32	.875 [22,22] square	.525 [13,33]
	61K		High resolution, long life	25, 32, 50, 64, 128, 256 (cycles per revolution)	1.250 [31,75] diameter	.500 [12,70]
	61L		One quadrature cycle per detent	24 (cycles per revolution)	.650 [16,50} square	.590 [14,98]
	61M		Simulates Mechanical Rotary Output	12	.687 [17,45]	.702 [17,83]
	61R		High resolution with optional index pulse	25, 32, 50, 64, 128, 256 (cycles per revolution)	1.250 [31,75] diameter	.500 [12,70]
	63K		High resolution, ball bearing, 4-pin	25, 32, 50, 64, 128, 256 (cycles per revolution)	1.250 [31,75] diameter	.500 [12,70]
	63R		High resolution, ball bearing, 5-pin (polarized)	25, 32, 50, 64, 128, 256 (cycles per revolution)	1.250 [31,75] diameter	.500 [12,70]