Mitsumi Electric Co KFK8615 Wireless Keyboard User Manual manual

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Document ID	124062
Application ID	OF/Rfe5J8sdnGzGT1TF3RA==
Document Description	manual
Short Term Confidential	No
Permanent Confidential	No
Supercede	No
Document Type	User Manual
Display Format	Adobe Acrobat PDF - pdf
Filesize	17.22kB (215299 bits)
Date Submitted	2000-11-03 00:00:00
Date Available	2000-11-08 00:00:00
Creation Date	2000-09-29 10:55:55
Producing Software	Acrobat 4.0 Import Plug-in for Windows
Document Lastmod	2000-09-29 10:56:29
Document Title	manual
Document Creator	Acrobat 4.0 Import Plug-in for Windows

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v v ‘[ ZO SPECIFICATION OF
KEYBOARD SWITCH
KFK txpe AUGOGIQQ’T enact
1. Scope : This specification covers MITSUMI keyboard SWitch KFK series.
2 Electrical Specifications:
2-1. Maximum Rating: D.C. 12V (with pulse width of 200 u sectv duty ratio 1/50), lmA,
272 CoritnctBounce: 5msec. Max Initial
lOmsec. Max ' ‘ Over life
(at normal pushing)
2-3 Contact Resistance : 1.5KQ Max (resistance value of membrane circuit board is included)
2-4. Insulation Resistance : 50M§2 Max (at D.C. 200V)
2—5‘ Withstand voltage : A.C.250V , 1 minute,
26. Circuit : Make Contact, 1 circuit,
3. Mechanical Specifications :
3-1 Force:
(1) Operating Force : 30g typical (0.214 N tyfical)
(2) Maximum Force : 501903 (0-440 N 3: mm N)
(3) Click Rate : 45 : zo%
(Decline of Clicking Force after ll) millions operation : within BU%)
' "’ " Tum-i stroke
Opcizltiug point. m) m.)
3-3 Full Travel : 4.2i0,5mm (at 200g) (at LQE N )
3-4 Key Touch Feeling : Keytop must be operated Without squeaking , catching , locking with
normal pushing, il—i/gi {E
‘ ’00i919_/
\KS&§§2H
DRAWING NO
S 56 0214 A
MITSUVMIV ELECTRIC CO.,L’l‘l)
4. Endurance Spemfications :
1-1 Operating Life : After 10 millions pushing , the switch must be satisfied with electrical
and mechanical specifications shown on item 2&3.
‘1-2. Operating Temperature Range 1 —5°C’~ f 501,"
4—3. Storage Temperature Range : fZOCCNWGE'fC (IUOUH)
44. Shock Proof: 20C in 3 Axis
5. Test Condition :
571, Measuring Conditions :
Measuring conditions '
Measuring conditions must be at temperature 223i 1°C humidity 50i2%RH.
However the measurement may be conducted under condition of normal temperature
(15"~35 C) and normal humidity (45N75%RH) unless such conditions affect test
results,
5-2.(7ontact Bounce :
Test shall be made by normal pushing at a speed of 3~5 times per second With D C
SV, 5011 A resistance load, Contact bounce range will be measured at 80% level as
shown below
A : ON Bounce
B : OFF Bounce
5-3. Contact Resistance :
Contact resistance included resistance value of membrane circuit board shall be
measured at D 0.24V , 0.1mA (voltage drop method) , applying static load of the
keytop,
5-4. Insulation Resistance
Measure ‘ applying D.C.250V between the terminals.
5 5 Withstand Voltage :
After A.C,250V is applied between the terminals for 1 minute , any change and
damage will not he appeared.
576i Force ‘
(1) Operating force :
Measure the operating farce when Switch makes contact by pushing the center of the
keywp.
(2) Maximum Force 1
Measure the maximum Force among the full travel except the full travel force.
(3) Minimum Force :
Measure the minimum Force among the travel after the maximum force.
Force
(g)
[N]
200
[ms]
Maximum Force
Minimum Force
Travel(mm) Full Travel
Fig.2.
Musuw, , ELECTRIC conun-
5-7. Operating Point:
Measure the distance when switch makes contact by pushing the center of the
keytop
58. Full Travel:
Measure the distance when static load onOOg is to be applied onto the center of the
hemp (mm)
3-9. Key touch feeling:
Keytep must be operated , Without squealung , catching, locking With normal
pushing of full travel at a speed of3~5 times per second.
510 Operating Llfe :
As illustrated in Fing , operating life test shall be made at a speed of 3"-7 meter per
second pushing the center of the keytop With a plunger of cam life testeiz
Life test condition
D,C.22V
i On time : 25mmsec
Cycle : 3N7 tune/sec
Pglmgsthane
Lever Pnsi Lian
Upper Pcsv Llen
MITSUMI BLEETBLC,, comm
Pushing force ' 200g (1-76 N)
(Typical)
(ii Test Form :
6-1, Humidity Test :
Aftcr unit is kept for 96 hours in 1) Chamber oftemperature +40123C , and relative
humidity 90N95% and then 15 left in ambient condition for 1 hour , electrical 8L
mechanical specifications item 2&3 shall be satisfied.
6-2. liuw Temperature Test 1
After unit is kept for 96 hours in u chamber oftemperature WZOLZCC , then is left in
ambient condition for 1 hour . electrical 85 mechanical specifications item 2&3 shall
h e
satisfied.
6-3. High Temperature Test. '
After unit is kept for 96 hours in a chamber of temperature +70t2°C , then is left in
ambient condition for 1 hour , electrical 8: mechanical specifications item 2&3 shall
be
satisfied
6-4. Thermal Shock Test :
After unit is kept for 5 cycles (one cycle consists of—20i2
1 hour) and then is left in ambient condition for 1 hour , electrical & mechanical
nC ilhour and +6052'C ,
specifications item 2&3 shall be satisfied,
6-5. Vibration Prochest :
Unit shall satisfy electrical Sc mechanical specifications item 2&3 after the folluwmg
Vibration is applied.
Frepuency : 10~55 Hz (cycle : 1 minute)
Full amplitude : 1.5mm
Duration : 2 hours each in 3 directions
6-6. Shock Proof Test :
After 20 G (halflsine wave) is applied to unit 3 times each in 3 directions , electrical 8:
mechanical speCificatiGns item 2&3 shall be satisfied.
ct) The test (G-I'VBVG) must be done under the open-circuit condition
MITgUMl ELECTRIC COHL’I‘D
7 Appearance nfkeytop :
7- l, Disposition of keytcp :
both vertical and horizontal lines,
Dispomtion of the keytop shall be within the limit of 0.5mm as illustrated in Fig.4 m
742. Tilt of keytop :
Fig. 5.
0.5mm MAX
Tilt of keytop shall be within the limit 0f0.5mm as illustrated in Fig.5.
0.5mm MAX
773. Angular deviation of keytup
MITSUMI
‘ig .G
Angular deviation of keytop shall be within the limit 0f0,5mm as illustrated in Fig 6.
(15mm MAX
ELECTRIC CO,,LT1).
771 Uneven level ufkeytop :
Uneven level ofkeytop shall be within the limxt of 0.5mm as illustrated m Figfi,
However, exclude the bend ofche firame.
fl
<:
CS
MITSUMI ELECTRIC C0,L’I‘D

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