Modular Keyboards SERIES 87 Low Profile Keyboards and Keypads FEATURES • 1, 2, 3, 4, 5 and 6 Button Individual Keyswitches • 12 and 16 Button Keypads • Maintain 1/2" Button Centers, no Matter How You Mount Modules or What Combination You Use • Up to 3,000,000 Operations per Button • Low Profile Design BUTTON Legends For Any Need Snap Dome Contact System Design Keyboards and Individual Keyswitches to Virtually any Configuration Without Costly Tooling. Prototypes and small quantities: create your own with economical, insertable legend style modules. Production quantities: choose either custom printing or permanent molded-in legends. Hear and feel button actuation You're assured of reliable button actuation with the metal snap-dome under each Series 87 button. When actuated, the dome changes shape, providing audible and tactile feedback to the operator. HOUSING DOME CIRCUIT PATH PC BOARD DIMENSIONS In inches (and millimeters) One Button Module .064 ± .010 TYP. (1,63 ± 0,25) .490 ± .010 (12,45 ± 0,25) .366 ± .010 (9,30 ± 0,25) SQ. BUTTON A .015 ± .010 (0,38 ± 0,25) BUTTON PROJECTION SWITCH KEY IDENTIFICATION (FOR REF. ONLY) TERMINAL PINS AT BOTTOM OF SWITCH .025 ± .002 (0,64 ± 0,05) SQ. TERMINAL .095 ± .010 (2,41 ± 0,25) .300 ± .010 (7,62 ± 0,25) .350 ± .010 (8,89 ± 0,25) COMMON A TERMINAL I.D. (FOR REF. ONLY) .075 ± .010 TYP. (1,91 ± 0,25) .095 ± .010 (2,41 ± 0,25) .163 ± .010 (4,14 ± 0,25) Two Button Module .990 ± .010 (25,15 ± 0,25) .245 ± .010 (6,22 ± 0,25) .500 ± .010 (12,7 ± 0,25) .490 ± .010 (12,45 ± 0,25) A B .366 ± .010 (9,30 ± 0,25) SQ. BUTTON SWITCH KEY IDENTIFICATION (FOR REF. ONLY) TERMINAL PINS AT BOTTOM OF SWITCH C-39 .015 ± .010 (0,38 ± 0,25) BUTTON PROJECTION .025 ± .002 (0,64 ± 0,05) SQ. TERMINAL .350 ± .010 (8,89 ± 0,25) .500 ± .010 (12,7 ± .010) .300 ± .010 (7,62 ± 0,25) .095 ± .010 (2,41 ± 0,25) A .163 ± .010 (4,14 ± 0,25) .095 ± .010 (2,41 ± 0,25) COMMON TERMINAL I.D. (FOR REF. ONLY) B .075 ± .010 (1,91 ± 0,25) .064 ± .010 TYP. (1,63 ± 0,25) Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois 60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com Modular Keyboards DIMENSIONS In inches (and millimeters) Three Button Module .500 (12,7) 2 EQ. SPS. TOL. NON-ACCUM. ± .010 (0,25) .245 ± .010 (6,22 ± 0,25) .490 ± .010 (12,45 ± 0,25) A B A C .075 ± .010 (1,91 ± 0,25) .095 ± .010 (2,41 ± 0,25) SWITCH KEY IDENTIFICATION (FOR REF. ONLY) 1.490 ± .010 (37,85 ± 0,25) .095 ± .010 (2,41 ± 0,25) .366 ± .010 (9,30 ± 0,25) SQ. BUTTON C B .500 (2,7) 2 EQ. SPS. TOL. NON-ACCUM. ± .010 (0,25) .300 ± .010 (7,62 ± 0,25) .350 ± .010 (8,89 ± 0,25) .015 ± .010 (0,38 ± 0,25) BUTTON PROJECTION .025 ± .002 (0,64 ± 0,05) SQ. TERMINAL .064 ± .010 TYP. (1,63 ± 0,25) TERMINAL I.D. (FOR REF. ONLY) Four Button Module .490 ± .010 (12,45 ± 0,25) .015 ± .010 (0,38 ± 0,25) BUTTON PROJECTION .500 (12,7) 3 EQ. SPS. TOL. NON-ACCUM. ± .010 (0,25) .245 ± .010 (6,22 ± 0,25) A B C .366 ± .010 (9,30 ± 0,25) SQ. BUTTON D SWITCH KEY IDENTIFICATION (FOR REF. ONLY) 1.990 ± .015 (50,55 ± 0,38) .025 ± .002 (0,64 ± 0,05) SQ. TERMINAL .500 (2,7) 3 EQ. SPS. TOL. NON-ACCOM. ± .010 (0,25) .095 ± .010 (2,41 ± 0,25) .300 ± .010 (7,62 ± 0,25) .350 ± .010 (8,89 ± 0,25) .095 ± .010 (2,41 ± 0,25) .163 ± .010 (4,14 ± 0,25) A C B D .075 ± .010 (1,91 ± 0,25) .064 ± .010 TYP. (1,63 ± 0,25) COMMON TERMINAL I.D. (FOR REF. ONLY) TERMINAL PINS AT BOTTOM OF SWITCH Five Button Module .500 (12,7) 4 EQ. SPS. TOL. NON-ACCUM. ± .010 (0,25) .366 ± .010 (9,30 ± 0,25) SQ. BUTTON .245 ± .010 (6,22 ± 0,25) A B .490 ± .010 (12,45 ± 0,25) C D .015 ± .010 (0,38 ± 0,25) BUTTON PROJECTION E .025 ± .002 (0,64 ± 0,05) SQ. TERMINAL 2.490 ± .015 (63,25 ± 0,38) .500 (2,7) 4 EQ. SPS. TOL. NON-ACCUM. ± .010 (0,25) .300 ± .010 (7,62 ± 0,25) .350 ± .010 (8,89 ± 0,25) A .095 ± .010 (2,41 ± 0,25) .163 ± .010 (4,14 ± 0,25) B C D .095 ± .010 (2,41 ± 0,25) E .075 ± .010 (1,91 ± 0,25) COMMON .064 ± .010 TYP. (1,63 ± 0,25) TERMINAL I.D. (FOR REF. ONLY) SWITCH KEY IDENTIFICATION (FOR REF. ONLY) TERMINAL PINS AT BOTTOM OF SWITCH Six Button Module .500 (12,7) 5 EQ. SPS. TOL. NON-ACCUM. ± .010 (0,25) .366 ± .010 .245 ± .010 (6,22 ± 0,25) (9,30 ± 0,25) SQ. BUTTON .490 ± .010 (12,45 ± 0,25) A B C D E SWITCH KEY IDENTIFICATION (FOR REF. ONLY) 2.990 ± .015 (75,95 ± 0,38) .015 ± .010 (0,38 ± 0,25) BUTTON PROJECTION .025 ± .002 (0,64 ± 0,05) SQ. TERMINAL .350 ± .010 (8,89 ± 0,25) .500 (2,7) 5 EQ. SPS. TOL. NON-ACCUM. ± .010 (0,25) .300 ± .010 (7,62 ± 0,25) F TERMINAL PINS AT BOTTOM OF SWITCH A .095 ± .010 (2,41 ± 0,25) COMMON TERMINAL I.D. (FOR REF. ONLY) B C D .095 ± .010 (2,41 ± 0,25) E F .075 ± .010 (1,91 ± 0,25) .064 ± .010 TYP. (1,63 ± 0,25) .163 ± .010 (4,14 ± 0,25) Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois 60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com C-40 Keyboards and Keypads TERMINAL PINS AT BOTTOM OF SWITCH COMMON .163 ± .010 (4,14 ± 0,25) Modular Keyboards DIMENSIONS In inches (and millimeters) 3x4 Keyboard 2 1 5 6 ROW 2 7 8 9 ROW 3 BUTTON NO. 1 RETAINING STUDS .025 ± .002 (0,64 ± 0,05) Sq. Terminals 1.990 ± .010 (50,55 ± 0,25) .695 ± .010 (17,65 ± 0,25) ROW 4 COL 3 COL 1 .366 ± .010 (9,30 ± 0,25) SQ. BUTTON COL 2 10 11 12 SWITCH KEY IDENTIFICATION (FOR REF. ONLY) ROW 1 4 .060 ± .010 (1,52 ± 0,25) TYP. COL = COLUMN Termination In inches (and millimeters) 3x4 Matrix Output Single Pole/Common Bus BUTTON NO. 1 .100 (2,5) TYP. BUTTON NO. 1 .163 ± .010 (4,14 ± 0,25) .100 (2,5) TYP. .300 ± .010 (7,62 ± 0,25) B C D E K L M .163 ± .010 (4,14 ± 0,25) .163 ± .010 (4,14 ± 0,25) .025 ± .002 (0,64 ± 0,05) Sq. Terminals .895 ± .010 (22,73 ± 0,25) .600 ± .010 (15,24 ± 0,25) .495 ± .010 (12,57 ± 0,25) .500 ± .010 (12,7 ± .010) DIMENSIONS .495 ± .010 (12,57 ± 0,25) .500 ± .010 (12,7 ± .010) In inches (and millimeters) 4x4 Keyboard .250 ± .010 (6,35 ± 0,25) .500 ± .010 (12,7 ± 0,25) 3 EQ. SPS. TOL. NONACCUM. 5 9 2 6 .500 ± .010 (12,7 ± 0,25) 3 EQ. SPS.TOL. NONACCUM. SWITCH KEY IDENTIFICATION (FOR REF. ONLY) ROW 1 3 7 COL 3 COL 2 .366 ± .010 (9,30 ± 0,25) SQ. BUTTON 8 10 11 12 13 14 15 .350 ± .010 (8,90 ± 0,25) .163 ± .010 (4,14 ± 0,25) 4 16 COL 4 1 COL 1 Keyboards and Keypads .500 ± .010 (12,7 ± 0,25) 3 EQ. SPS. TOL. NONACCUM. 3 1.490 ± .010 (37,85 ± 0,25) .350 ± .010 (8,90 ± 0,25) .500 ± .010 (12,7 ± 0,25) 2 EQ. SPS.TOL. NONACCUM. .245 ± .010 (6,22 ± 0,25) ROW 2 ROW 3 .025 ± .002 (0,64 ± 0,05) Sq. Terminals 2.000 + .000 – .005 (50,8 – 0,13) BUTTON NO. 1 RETAINING STUDS .100 (2,5) TYP. 2.000 + .000 – .005 (50,8 – 0,13) ROW 4 .064 ± .010 (1,63 ± 0,25) TYP. COL = COLUMN C-41 Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois 60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com Modular Keyboards Termination In inches (and millimeters) 4x4 Matrix Output Single Pole/Common Bus BUTTON NO. 1 .100 (2,5) TYP. .300 ± .010 (7,62 ± 0,25) D E F G BUTTON NO. 1 .163 ± .010 (4,14 ± 0,25) .100 (2,5) TYP. A B C D E F G H J .025 ± .002 (0,64 ± 0,05) .800 ± .010 Sq. Terminals (20,32 ± 0,25) M N P Q .025 ± .002 (0,64 ± 0,05) Sq. Terminals Keyboards and Keypads .795 ± .010 (20,19± 0,25) K L M N P Q R S .163 ± .010 (4,14 ± 0,25) .695 ± .010 (17,65 ± 0,25) .500 ± .010 (12,7 ± 0,25) .500 ± .010 (12,7 ± 0,25) 1.000 ± .010 (25,4 ± .010) 1.000 ± .010 (25,4 ± .010) CIRCUITRY, CODE AND TRUTH TABLES Circuitry for Module Strips C CIRCUIT DIAGRAM BUTTON LOCATION Matrix Single Pole/Common Bus • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • BUTTON LOCATION CODES 1 2 3 4 5 6 7 8 9 10 11 12 Dots in the chart indicate connected terminals when switch is closed. Terminals are identified on the keyboard. B COMMON UNDER BUTTON A 4x4 3x4 Code and Truth Table A The one-button thru six-button modules have single pole/common bus circuitry as shown in the circuit diagram. The common is located under button A; it is not marked on the actual product. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 CODES Single Pole/Common Bus Matrix • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •• K D E B C L M K H A J C B M E F L N G D M N G F D E PQ K N B A L M D C Q P F G S R E H J TERMINAL LOCATION TERMINAL LOCATION SPECIFICATIONS Rating Materials and Finishes Operating Features Rating at 24 Vdc: 10 milliamps, resistive Contact Resistance: MOS, CMOS, TTL, DTL compatible (10 ohms maximum) Voltage Breakdown: 250 Vac between mutually insulated parts Insulation Resistance: 1,000 megohms min. Life Expectancy: 3,000,000 operations per button Contact Bounce: Less than 4 milliseconds at make, 10 milliseconds at break Housing: ABS polycarbonate, black Buttons: ABS plastic, white. Legends are black. Snap-On-Cap: Clear polycarbonate Contact Dome: Stainless steel, selectively goldplated Terminals: Copper alloy, CDA 725, tin-lead plated Button Travel: 0.011" (0,28) nominal, total travel Operating Temperature: -40°C to +80°C Typical Operating Force: 300 grams Mounting: Mounts to 1/32" to 1/8" thick PC board Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois 60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com C-42 Modular Keyboards STANDARD LEGENDS Dry Transfer Legends Insertable Style Modules For additional legend inserts Sheets include A thru Z in upper and lower case, the numeric characters 0 thru 9, as well as commonly used symbols. The typestyle and size are similar to the chart for printed legends shown below. Small Print Part No. 87-DT-2096-088 Medium Print Part No. 87-DT-2096-125 Large Print Part No. 87-DT-2096-187 For prototypes and small quantities Standard insertable legend modules are an economical way to create your own keyboard legend. Just remove the clear button cap, add any legend, and replace the snap-on cap. Legend Inserts Keyboards and Keypads For insertable legend modules Give your keyboard modules the appearance of being printed without the cost. Self-adhesive, printed legend inserts are die cut to fit the buttons. Legend sheet includes commonly used symbols, terms, alpha characters A-Z, and numeric characters 0-99 in News Gothic Condensed typestyle, printed in black on clear backing. Legend sheets also include blank inserts for dry transfer lettering. 87 Series Legend Sheet Part No. 87AC2046 Type No. and Typical Height Sample Style and Typical Sizes SPECIAL LEGENDS Printed Legends For medium volume or short runs Virtually any character, symbol or pattern which can be photographed can be printed on the button. Grayhill uses epoxy ink which bonds to the surface of the button. The legend can be printed on either of two Sub Surface Character and Line Limitations Top Surface Character and Line Limitations 4GH088 .083" ABCDEFGH 4 Characters 2 Lines END DATA 4 Characters 2 Lines END DATA 1GH125 .138" ABCDE 3 Characters 1 Line LAD 3 Characters 1 Line LAD 3GH187 .207" ABCD 2 Characters 1 Line ON 2 Characters 1 Line ON 2GH250 .276" ABC N/A N/A 2 Characters 1 Line 15 surfaces: the top surface of a one-piece button, or the internal surface on the snap-on cap style for maximum wear. The typestyle chart shows the style and the approximate limitations of Grayhill's standard type. However, limitations differ with the surface to be printed and the actual characters to be used. If your legend exceeds the chart limits, contact Grayhill for more information. Unless specified, black legends are printed on white buttons. Additional Ink Color: White ink is stocked for use on dark colored buttons. Additional Button Colors: For a molding charge, we can provide buttons from other colors which we may have in stock, such as black, red, green, blue, or yellow. Non-stock button/ink colors may require minimum material purchase. To order, or to check currently stocked colors, contact Grayhill. Molded-in Legends For high volume production For legends that will stand up to abuse and constant wear for the life of your keyboard, use molded-in legends. The two-shot molding process molds the legend and button together. Your special legend can be made from existing Grayhill molds or we can tool special ones. Buttons are available with black legends molded in white or other light backgrounds, or with white legends molded into dark backgrounds. See Printed Buttons, Additional Button Colors. To order, contact Grayhill. ORDERING INFORMATION Type of Module or Legend 1 2 3 4 5 6 Button Button Button Button Button Button Part Number 87CC3-201 87DC3-201 87EC3-201 87FC3-201 87GC3-201 87HC3-201 12 Button–Matrix 12 Button– SP/Com Bus 16 Button–Matrix 16 Button– SP/Com Bus 87AB3-201 87BC3-201 Insertable Legend Card Dry Transfer–Small Dry Transfer–Medium Dry Transfer–Large 87AC2046 87-DT-2096-088 87-DT-2096-125 87-DT-2096-187 87AC3-201 87BB3-201 Special Legends To order non-standard modules, information is required for the areas listed below. Your special order will be assigned a part number for future identification. This number is sequentially assigned and is non-descriptive. 1. Type of Module. 1, 2, 3, 4, 5, 6, 12 or 16 button. 2. Mounting Orientation. Horizontal or vertical. 3. Circuitry. Single pole/common bus is standard for all single row modules. For 12 or 16 button keyboard, specify single pole/common bus or matrix. 4. Housing Color. Standard housing is black. Optional stock colors include beige and gray. 5. Button Types. Flat or concave buttons are available for molded legends; flat, concave, and snap-on cap styles are available for printed legends. 6. Button Color. Standard buttons for molded and printed legends are white with black legend. Other colors available include white legends with red, green, dark blue, dark gray and black buttons, or black legends with yellow, blue, light gray, beige and white buttons. Additional legend colors such as red are also available. 7. Legend Style. Two-shot molded or printed. Printed legends may be top or sub-surface printed. 8. Actual Legend. Specify for each button using the button identification on drawings. Price–Contact Grayhill. Available from your local Grayhill Distributor. For prices and discounts, contact a local Sales Office, an authorized local Distributor or Grayhill. C-43 Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois 60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com