Grayhill Keypads 82 Series - Manual (Page 5)

Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois 60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
Standard Keypads
Keyboards and Keypads
SPeCiFiCationS
rating
rating at 5 Vdc: 100 milliamps
Contact resistance: 25 milliohms or less on
a new switch
Voltage Breakdown: 250 Vac between mutually
insulated parts
insulation resistance: 1,000 megaohms
minimum
life expectancy: 1,000,000 operations
Contact Bounce: 10 milliseconds or less for
the life of the switch
operating temperature: -40°C to 80°C
materials and Finishes
Pin Contact: Brass, gold plate over nickel
plate
SPeCial legenDS
molded-in legends
For unlighted modules
In addition to standard white
legend on gray button, long-
wearing, molded-in legends are
available in white button with black
legend and white legend with red,
green or black buttons. Other color
combinations are possible.
Printed legends (2 Styles)
Virtually anything which can be photographed
can be printed. Sturdy epoxy ink printing bonds
to the surface of the button. Standard printing
for the gray unlighted buttons is white; standard
printing for the translucent white buttons of the
lightable modules is black.
top Surface Printing: Legend is applied directly
to top of button. Available on all standard,
unlighted modules.
Sub Surface Printing: Provides maximum wear
for printed surfaces. Available for lighted and
unlighted gray modules. Printed internal button
cap is protected by a clear outer cap.
4gh088
.083"
1gh125
.138"
3gh187
.207"
2gh250
.276"
ABC
ABCD
ABCDE
ABCDEFGH
5 Char.
2 Lines
4 Char.
1 Line
2 Char.
1 Line
2 Char.
1 Line
OPER
TAB
INDEX
ON
8 Char.
3 Lines
4 Char.
2 Lines
3 Char.
1 Line
2 Char.
1 Line
4 Char.
2 Lines
3 Char.
1 Line
2 Char.
1 Line
N/A N/A
OFF
15 15
RESEARCH
SYSTEMS
12345678
CODE
SEND
STOP
1234
OFF
ON
type no. Sample Style Sub Surface top Surface lightable module
and typical and typical Character and Character and Character and
height Sizes line limitations line limitations line limitations*
Note: Limitations for legends differ with surface to be printed and actual characters. If your application exceeds the approximations
in the chart, contact Grayhill for more information.
* For top and sub-surface printed modules.
StanDarD legenDS
telephone Keyset
Two 6-button modules form the keyset. White
telephone legend is
molded into a gray
button. SPST, 2PST,
3PST, and 4PST
circuitr y available
from distributors, see
ordering information;
order special circuitry
from Grayhill.
non-legend, lighted modules
Standard lightable module configurations
without cap slot for insertable legend.
insertable legend Styles
Prototypes can look professional with insertable
legend modules. Just slip imprinted legend insert
through the slot of the clear button cap.
legend Sheet
Available for each module style. Each sheet
contains commonly used symbols, terms, alpha
characters, and 0-19 in News Gothic Condensed
type on polyester film, ready to be cut and inserted.
Deadfront legends are invisible until lit.
White on Clear: For unlighted gray modules Part no. 82aC2017-1
Black on Clear: For lighted gray modules Part no. 82aC2050-1
translucent White on Black: For black modules Part no. 82aC2060
Deadfront on Black: For black modules
Spring Contact: Copper alloy, gold plate over
nickel plate
housing: ABS plastic (gray)
Base: PPS plastic (black)
return Spring: Tinned music wire
other Parts: (By Module and Legend Style): For
unlighted module with molded legends or top
surface printed legends. Internal Button is acetal
and the Button is ABS plastic (gray).
For unlighted module with sub-surface printed
legends or insertable legends, Internal Button
is acetal; Internal Cap is ABS plastic (gray); and
Clear Cap is polycarbonate plastic. For lightable
modules, the Internal Button and the Clear Cap
are polycarbonate. The Internal Cap for gray
modules is acrylic; for the black modules, the
Internal Cap with window is polycarbonate.
For special lightable modules for higher
temperatures, internal button cap is polycarbonate
and housing is polyester.
operating Features
action: Momentary, wiping contact
Button travel: 0.130" (3,30 mm) total travel
overtravel: 0.080" nominal
operating Force: 8 ± 3 ounces (depends on
number of poles.)
Soldering instructions
Series 82 Keyboard Modules have been
successfully tested for heat resistance to
soldering up to 260°C (500°F) for a maximum
of 5 seconds. Careful flux cleaning is required
since the switch is not sealed. For applications in
excess of these limits or that require vapor spray
or immersion cleaning, contact Grayhill.
Printed type styles
The type style chart below illustrates type style
and approximate sizes and limits for button cap
legends; other sizes are also available. Limitations
for legends differ with type size and character.
Legends for lightable modules are further limited
by the size of the internal button and lighted area.
Grayhill's library includes many popular legends.
Contact Grayhill for complete information.
Special Colors
Besides the standard
gray and black housings,
you may order white,
beige or brown. Button
colors may also be
specially ordered. For
more information, see
next page.