Linx Technologies CMD-KEYX-XXX OEM Keyfob Transmitter User Manual

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Document ID	187305
Application ID	Adb7TQ3ty6nDSVE8pCJJ2A==
Document Description	Users Manual
Short Term Confidential	No
Permanent Confidential	No
Supercede	No
Document Type	User Manual
Display Format	Adobe Acrobat PDF - pdf
Filesize	51.29kB (641172 bits)
Date Submitted	2001-12-19 00:00:00
Date Available	2001-12-19 00:00:00
Creation Date	2001-11-20 14:42:37
Producing Software	Acrobat 4.0 Import Plug-in for Windows
Document Lastmod	2001-11-20 14:47:10
Document Title	Users Manual
Document Creator	Acrobat 4.0 Import Plug-in for Windows

CMD—KEYX- XXX
REHNWLDEIES
WIRELESS mums SIMPLE
lllll
OENIKEYFOBTRANSMHTERDAEAGUEE
DESCRIPTION
The Linx CMD-KEYX—XXX Remote
Command keylob is Ideal for general-
purpose remote control and command
applications. The unit has been pre—
certified for FCC Part 15 compliance
which reduces costs and tlme to
product introduction, Available in 315,
418 or433.92 MHz (4IBMHZ standard),
this stylish and compact remote ls
capable of 100+ ft. transmlsslon range.
The unit can be configured with 1-5
buttons and the keypad and labeling
can be customized to meet specific
customer requirements. Selectable
addressing provides security and
allows tar 2‘0 distinct transmitter-
receiver relationships. The trans-
mission can be decoded using a
matching Linx lunctlon module, 8 KH
series receiver/decoder module or a
Linx LC senes receiver paired with a
decoder 10 or microconh’oller, The unit
operates from a single arvolt lithium
cell.
APPLICATIONS INCLUDE:
l Remote Control! Command
l Keyless Entry
I Garage / Gate Openers
I Lighting Control
I Security! Call Systems
I Home / Industrial Automation
Physical Dimenslons
OEM configurdtlnns
With a one-time NFlE and minimum
order, Linx can configure the keypad
and label areas to meet your specific
requirements Contact Linx for details.
X: ll 0! buttons - insert l~5
Revised 6/17/01 ' = standard Frequency
' PERFORMANCE DATA- CMD-KEYX-xxx
ABOUT THESE MEASUREMENTS
The performance parameters listed below are based on module operation at 25°C
lrom a 3Vdc supply unless otherwise noted
Frequency oi Carrier
Harmonic Emissions
Frequency of carrier
Harmonic Emissions
Harmonic Emission:
Operating voltage Range .
Cunent Average , 1.7
Current In Sleep . — . a -
output Power PART 15231 compliant
TX Dale length , zenitsax
Average Data Duty cycle was
Encoder Oscillator : 70
Operating Temperature j to
Not”:
1. Current draw wilh m mark/space ratio
2, Current draw in standby
THEORY OF OPERAflON
The CMDvKEYX-XXX Keytob Command Unit combines a high-perbrmance SAWv
(Surlace Acoustic Wave) based transmitter with an on-board encoder. The keybb
can transmit the status at 1 to 5 buttons along with the state of ten address lines
for security and creation of unique transmitter/receiver relationships. The product’s
operation is straightforward. When a button is pressed, power is applied to the
internal circuitry and the encoder IC is enabled The encoder then detects the logic
states otthe address traces and button data lines These states are then formatted
into a 3-word transmission cycle which continues until the bulton is releasedThe
encoder data is used to modulate the transmitter which througi the antenna
oeuveys the data Into tree space. The transmitted signal may be received try any
Linx KH or L0 receiver or pro-made function module ol the same frequency Once
data is received it is decoded using a decoder IC or custom microcontroller. The
transmitted address bits are checked against the address settings of the receiving
nde. If a match is confirmed, the decoder‘s outputls) are set to replicate the
transmitters button status.
Page 2
SE1TING THE TRANSMITTER ADDRESS
The keytob allows the selection of one of
1024 unique addresses. All keyfobs from
the tadlory are emptied set to the same
address. To avoid ID contention with
other units In the vicinity or to create
unique relationships it may be helpful to
change the address settings. This may be
accomplished by cutting the appropriate
lumper tracets) with a sharp object such
as an X-acto knite as shown. The traces
are awessed by removing the rear cover
as for battery replacement.
CONTENTION CONSIDERATIONS
it Is Important to understand that only one transmitter at a time can be activated
within a reception area. While the transmitted signal consists of encoded digital
data, only one carrier of any lrequency can occupy airspace without contention
at any given time.
BAITERY REPLACEMENT
The remote unit utilizes a CFi-2032 Button Lithium Cell.
In normal use it will provide 1-2 years at operation
Access lor replacement is accomplished by gentiy
prying apart the two halves of the keybb at the seam
(fingernails will do for this). Once the unit is open,
remove the battery by slidan the battery out from
beneath the retainer: Replace with the same type of cell
while observing the polarity shown,
COMPLIANCE REQUIREMENTS
The CMD-KEYX-XXX has been pre-certified by Linx tor FCC Part 15 compliance
when used with an appropriate function module in keeping with the applications
allowed under section 15231.
LABELING/ INSTRUCTION REQUIREMENTS
The CMD-KEYX-XXX Remote Command Unit has already been labeled in
accordance with FCC regulations in effect as of the date of this document. No
further labeling of the unit is needed: however, It is necessary to include the
statement on page 7 in the end product‘s instruction manual or insert card.
Pagefi
Schematic Diagram
D1 CUT TRACE FOR VCC
ADDRESS SELECT l
De
D4 — B1
D5 BA
D6
TOUCHPAD D7 I
83 DOUT
l-E- TE
OSC2
A A 0801
GND
TOUCHPAD
A A SAW
Oscnllator
so 9 RF OUT
(Ant)
Keyed Output
Output Isolation :
& Filler RF Amplifier
TOUCHF'AD
Page 4 Pace 5
Kay'ob Address Llnce
Keyfobs are shipped with an
address lines tied to ground
(Default) with 1024 possible
address combinations available
by cuttlng address traces
KH Series Receiver/Decoder Module
The Keyfob works directfy with
the KH series receiver/decoder ,
RF RECENERDECODER
modules when AO-AQ are set RxD—Jl cm
to the same configuration as LOT moo
the keyfob address lines.
S LINX
FCC Precerlified Decoder Function Module
Because the Function Decoder Module
only has 9 address lines, the its address
line on the keyfob must be cut. Address
lines 0-8 must match the configuration in
the keyfob for 512 possible addresses.
Also be sure to tie the function decoders
mounting hole directly to groundplane to
further enhance performance.
iii
UDDDDDUDUU
5mm
LC Receiver Module
The LG receiver module can be used
with an appropriate decoder such as
v USING THE KEYFOB WITH LINX RECEIVER MODULES
Holtek‘s HT-658 for 1024 possible
addresses.
Page 6
INSTRUCTION TO THE USER
This equipment has been tested and found to comply with
the limits for a Class-B digital device, pursuant to Part 15
‘ of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference in a
residential installation. This equipment generates, uses
and can radiate radio frequency energy and, if not
installed and used in accordance with the instructions, 1
may cause harmful interference to radio communications.
However, there is no guarantee that interference will not ‘
occur in a particular installation. If this equipment does
cause harmful interference to radio or television
reception, which can be determined by turning the
equipment off and on, the user is encouraged to try to
correct the interference by one or more of the following
measures:
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and
, receiver.
Connect the equipment into an outlet on a circuit diflerent
] from that to which the receiver is connected.
Consult the dealer or an experienced radiO/TV technician
. for help.
This equipment has been certified to comply with the
limits for a Class-B computing device, pursuant to FCC
Rules. In order to maintain compliance with FCC
‘ regulations, shielded cables must be used with this
equipment. Operation with non-approved equipment or
unshielded cables is likely to result in interference to radio
and TV reception. The user is cautioned that changes and
modifications made to the equipment without the
approval of manufacturer could void the user's authority
to operate this equipment.
Place the above statement in the instruction manual or insert card.
Pager
LINX
EL'HNDLGGIES
"ll, WIRELESS MADE SIMPLE
U.S. CORPORATE HEADQUARTERS:
LlNX TECHNOLOGIES, INC.
575 5.5. ASHLEY PLACE
GRANTS PASS, OR 97526
PHONE: (541) 471-6256
FAX: (541) 471-6251
httpzllwvvainxtechnoIogles.¢om
Disclaimer
Linx Technologies is continually striving to Improve the quality and lunc'aon 01 its producls: lcr
this reason, we reserve the right to make changes wilhout notice. The Information contained in
this Data Sheet is believed to be accurate as of the time of publication, Specifications are based
on representative lot samples. Values may vary from lot to lot and are not guaranteed. Linx
Technologies makes no guarantee, warranty, or representation regarding the suitability or
legality 01 any productlor use in a specific application. None oflhese devices is intended for use
in applicaflons eta crlflcal nature where the safely cl lite or property is at risk. 111e user assumes
lull liabilitylor me use 01 product in sum applications. Under no conditions will LinxTechnologies
be responsible lor losses arielng lrom lhe use or failure 01 the device in any applicaflon, other
than the repair, replacement, or relund limited to the original product purchase price. Some
devices described In mis pumicatlon are patented. Under no circumstances shall any user be
conveyed any license or vigil to me use or ownership of these patents.
o 2000 by Llnx Technologiefi Inc The sum
Linx 1m Linux. and “Wireless mm Simple"
ale the mug-"m of Linx Technologies, Inc,
mm in u SA,
Page a

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Modify Date                     : 2001:11:20 14:47:10-08:00
Create Date                     : 2001:11:20 14:42:37-08:00
Creator                         : Acrobat 4.0 Import Plug-in for Windows
Producer                        : Acrobat 4.0 Import Plug-in for Windows
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