Linx Technologies OTX-XXX-LRMSA Long-Range Handheld Transmitter User Manual OTX xxx HH LR8 MS Manual 2 28 06

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Document Description	Users Manual
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Date Submitted	2006-04-25 00:00:00
Date Available	2006-04-25 00:00:00
Creation Date	2006-03-27 12:08:06
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Document Title	OTX-xxx-HH-LR8-MS Manual 2-28-06.qxd
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Document Author:	justinho

WIRELESS MADE SIMPLE
MS LONG-RANGE HANDHELD TRANSMITTER DATA GUIDE
DESCRIPTION
The Linx OTX-***-HH-LR8-MS Long-Range
Handheld Transmitter is ideal for generalpurpose remote control and command
applications that require longer transmission
distances. This unit has been pre-certified for
FCC Part 15, Industry Canada, and European
CE (433MHz only) compliance, reducing costs
and time to market. Available in 315, 418
(standard), or 433.92MHz, this small remote
has a transmission range of up to 3,000 feet
when combined with the LR Series receiver.
The transmitter unit can be configured with 1 to
8 buttons and the keypad and labeling can be
modified to meet specific OEM customer
requirements. Ease of use and security are
dramatically enhanced by the on-board MS
Series encoder, which allows instant creation of
up to 16,777,216 (224) unique addresses
without cumbersome DIP switches or cut traces.
When paired with a MS Series decoder,
transmitter identity can be determined and
button permissions established. The unit uses a
single 3V CR2032 lithium button cell.
FEATURES
„
„
„
„
„
„
„
„
„
„
„
General Remote Control
Keyless Entry
Garage / Gate Openers
Lighting Control
Call Systems
Home / Industrial Automation
Wire Elimination
R 0.2"
2.00"
2.81"
1.35"
1.62"
0.20"
0.60"
Figure 1: Package Dimensions
OEM Configurations
FCC, Canada, and CE pre-certified
1 to 8 buttons
Small package
Customizable keypad
APPLICATIONS INCLUDE
1.375"
With a one-time NRE and
minimum order, Linx can configure
the keypad and label areas to
meet your specific requirements.
Contact Linx for details.
ORDERING INFORMATION
PART #
DESCRIPTION
OTX-***-HH-LR8-MS-xxx MS Long-Range Transmitter
MDEV-***-HH-LR8-MS HH-LR8 Master Development System
*** = 315, 418 (Standard), 433.92 MHz
xxx = Color Leave blank for standard Black
Revised 2/28/06
ELECTRICAL SPECIFICATIONS
Parameter
Designation
Min.
POWER SUPPLY
Operating Voltage
VCC
Supply Current
ICC
Power-Down Current
TRANSMITTER SECTION
Transmit Frequency Range:
IPDN
SETTING THE TRANSMITTER ADDRESS
Typical
Max.
Units
Notes
2.1
3.0
3.6
VDC
–
–
3.4
–
mA
–
–
5.0
–
nA
OTX-315-HH-LR8-MS
–
315
–
MHz
–
OTX-418-HH-LR8-MS
–
418
–
MHz
–
OTX-433-HH-LR8-MS
–
433.92
–
MHz
–
FC
Center Frequency Accuracy
–
-50
–
+50
kHz
–
ENVIRONMENTAL
Operating Temperature Range
–
-40
–
+85
°C
Notes
1. Characterized, but not tested
THEORY OF OPERATION
The OTX-***-HH-LR8-MS Long-Range Handheld transmitter combines the LR
Series transmitter and an antenna with an on-board MS Series encoder to form
a simple, yet highly reliable RF remote-control transmitter. The LR Series
transmitter is a low-cost, high-performance synthesized ASK / OOK transmitter.
The transmitter’s synthesized architecture delivers outstanding stability and
frequency accuracy, while minimizing the effects of antenna port loading and
mismatching. This reduces or eliminates frequency pulling, bit contraction, and
other negative effects that are common to SAW-based transmitter architectures,
providing a significantly higher level of performance and reliability.
When a button is pressed on the transmitter, power is applied to the internal
circuitry and the encoder is enabled. The encoder then detects the logic states
of the button data lines. These states are formatted into a 2-word transmission
cycle that continues until the button is released. The encoder data is used to
modulate the transmitter that, through the antenna, conveys the data into free
space. Once data is received, a decoder IC is used to check the transmitter’s
address against an address saved in memory. If a match is confirmed, the
decoder’s outputs are set to replicate the transmitter’s button states. These
outputs can then be used to activate external circuitry required by the
application.
The transmitter is compatible with several Linx receiver products, including the
LC and LR product families. For applications where range is critical, the LR
Series receiver is the best choice due to its outstanding sensitivity. When the
transmitter is combined with an LR Series receiver and the MS Series decoder,
ranges of up to 1,000 feet are possible. Applications operating over shorter
distances will also benefit from the increased link reliability and superior noise
immunity provided by the LR Series receiver.
The MS Long-Range Handheld
Transmitter allows the selection of one
of 16,777,216 (224) unique addresses.
All transmitters are supplied set to the
same address. To avoid contention with
other units or to create unique
relationships, the address can be
changed. This is accomplished by using
a paper clip or probe to press the
CREATE_ADDR button on the board
through the bottom hole in the back of
the case. When the button is depressed, Figure 2: CREATE_ADDR Button Access
a LED will light up in the MODE_IND
window, indicating that the address is being created. The address will be
randomized for as long as the button is held down. When the button is released,
the randomized address is saved and the LED will begin flashing to indicate that
the Control Permissions may now be set. Press the buttons that the transmitter
will have the authority to access. Press the CREATE_ADDR button with the
paper clip again or wait 17 seconds for it to time out. The address and Control
Permissions are now set. The decoder will need to learn the address before it
will accept any transmissions. Please see the Typical Applications section of this
data guide or the MS Series Decoder Data Guide for details.
OTX-***-HH-LR8-MS BUTTON ASSIGNMENTS
This diagram illustrates the relationship between the button locations and
encoder data lines.
D6
D7
D4
D5
D2
D3
D0
D1
Figure 3: OTX-***-HH-LR8-MS Button Assignments
Page 2
Page 3
CONTENTION CONSIDERATIONS
COMPLIANCE REQUIREMENTS
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 particular frequency can occupy airspace without
contention at any given time. If two transmitters are activated in the same area
at the same time, then the signals will interfere with each other and the decoder
will not see a valid transmission, so it will not take any action.
LABELING / INSTRUCTION REQUIREMENTS
The OTX-***-HH-LR8-MS Long-Range Handheld transmitter has already been
labeled in accordance with FCC, Industry Canada, and CE 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 following statement in the end product’s
instruction manual or insert card for FCC compliance. Industry Canada only
requires the shaded portion. EU does not require a statement.
BATTERY REPLACEMENT
The remote unit utilizes a standard CR2032 lithium
button cell. In normal use, it will provide 1 to 2 years
of operation. To replace the battery, remove the
access cover by pressing down firmly on the label
area and sliding it off. Once the unit is open, remove
the battery by sliding it from beneath the holder.
There may be the risk of explosion if the battery is
replaced by the wrong type. Replace it with the same
type of battery while observing the polarity shown in
the adjacent figure.
The OTX-***-HH-LR8-MS has been pre-certified by Linx Technologies for FCC
Part 15 and Industry Canada RSP-100 compliance. The 433.92MHz version has
also been tested for CE compliance for use in the European Union. The 315MHz
and 418MHz versions are not legal for use in Europe.
Battery Access
INSTRUCTION TO THE USER
This device complies with Part 15 of the FCC Rules.
Operation of this device is subject to the following two conditions:
Figure 4: Battery Access
ASSEMBLY DIAGRAM
(1) This device may not cause harmful interference, and
(2) this device must accept any interference received, including interference
that may cause undesired operation.
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, 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:
418MHz
FCC ID: OJM-OTX-XXX-LRMSA
IC: 5840A-LRMSXXXA
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and receiver.
Battery Warning Label
on INSIDE of battery cover
433MHz version ONLY
Connect the equipment into an outlet on a circuit different from that to which the
receiver is connected.
Consult the dealer or an experienced radio/TV technician for help.
Figure 5: OTX-***-HH-LR8-MS Assembly
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.
Page 4
Page 5
GND
R11
100K
100K
R10
R9
100K
100K
R8
R7
100K
100K
R6
100K
100K
R5
R4
R2
U5
DPAK-X2
GND
R1
100k
DPAK-X2
U4
U3
Learn
S1
R3
200
GND
R12
100k
GND
D1
LED
GND
GND
GND
GND
B1
BAT-LINX2032
R23
100k
VCC
GND
C1
VCC
The RX_CNTL line can be
220
connected to the PDN line of the
LICAL-DEC-MS001
GND
receiver and the decoder will
GND
activate the receiver with a 10%
duty cycle This greatly reduces
Figure 6: LR Receiver and MS Decoder Schematic
the average current consumption
of the system. The adjacent figure shows it tied to ground, but to use this feature,
connect the RX_CNTL line of the decoder directly to the receiver’s PDN line.
VCC
VCC
DPAK-X2
SEND
DATA_OUT
MODE_IND
D6
U1
VCC
VCC
VCC
D3
D2
D5
VCC
D1
RF OUT
LADJ/VCC
TXM-XXX-LR
GND
GND
315MHz = 2kohm
418MHz = 2kohm
433MHz = 2kohm
20
19
18
17
16
15
14
13
12
11
4.7uF
D5
D4
D3
D2
VCC
VCC
D1
D0
DATA_IN
LEARN
GND
D6
D7
SEL_BAUD0
SEL_BAUD1
GND
GND
LATCH
RX_CNTL
TX_ID
MODE_IND
C3
10
10pF
VCC
R13
GND
RXM-LR
U2
ANT1
ANTENNA
GND
GND
PDN
VCC
GND
DATA IN
GND
TX1
16
15
14
13
12
11
10
ANT
GND
NC
NC
NC
NC
NC
NC
GND
NC
NC
NC
GND
VCC
PDN
RSSI
DATA
C2
If the LATCH line is tied to VCC,
the outputs will go high on the
first transmission, then low on
the second. Figure 6 shows it
tied low, so the outputs will be
momentary (high for as long as a
signal is received which instructs
the decoder to make them high).
VCC
100K
The decoder must learn the transmitter’s address
before they can work together. This is done by taking
LICAL-DEC-MS001
the LEARN line on the decoder high, typically with a
pushbutton switch. The MODE_IND line will start switching (if a LED is attached,
this will cause it to flash) indicating that the decoder is in Learn Mode. Press any
of the buttons on the transmitter to initiate a transmission. Take the LEARN line
high again to exit Learn Mode and the system is ready for use. The figure below
shows a schematic for a typical application.
The decoder has several unique
features, such as Latch Mode,
Receiver Control, and TX_ID.
SW4
SW3
SW2
SW1
VCC
When a button is pressed on the transmitter, a
corresponding line on the decoder will go high. This can
then be connected to external circuitry to perform
whatever function is required by the application.
The MS Long-Range transmitter
is set to 9,600bps, so
SEL_BAUD0 should be tied high
and SEL_BAUD1 tied low.
SW7
SW6
RXM-***-LR
The signal sent by the MS Long-Range transmitter can
be received by the LC Series receiver module or the LR
Series receiver module. The outstanding sensitivity of
the LR Series receiver offers the best range when used
with the OEM transmitters. The receiver module is then
connected directly to the MS Series decoder, which will
decode the transmitted signal.
SM1
COM
TYPICAL APPLICATIONS
The TX_ID line will output a number associated with the originating transmitter /
encoder. Application Note AN-00156 shows how to use this feature.
Data guides for the receivers, the MS encoder, and the MS decoder can be
found on the Linx Technologies website, www.linxtechnologies.com.
Page 6
Figure 7: OTX-***-HH-LR8-MS Schematic
Page 7
WIRELESS MADE SIMPLE
U.S. CORPORATE HEADQUARTERS
LINX TECHNOLOGIES, INC.
575 S.E. ASHLEY PLACE
GRANTS PASS, OR 97526
PHONE: (541) 471-6256
FAX: (541) 471-6251
www.linxtechnologies.com
Disclaimer
Linx Technologies is continually striving to improve the quality and function of its products. For
this reason, we reserve the right to make changes without notice. The information contained in
this Data Guide 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 of any product for use in a specific application. None of these devices is intended for
use in applications of a critical nature where the safety of life or property is at risk. The user
assumes full liability for the use of product in such applications. Under no conditions will Linx
Technologies be responsible for losses arising from the use or failure of the device in any
application, other than the repair, replacement, or refund limited to the original product purchase
price. Some devices described in this publication are patented. Under no circumstances shall
any user be conveyed any license or right to the use or ownership of these patents.
© 2006 by Linx Technologies, Inc. The stylized
Linx logo, Linx, and “Wireless made Simple”
are the trademarks of Linx Technologies, Inc.
Printed in U.S.A.

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Title                           : OTX-xxx-HH-LR8-MS Manual 2-28-06.qxd
Creator                         : justinho
Author                          : justinho

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