Linx OTX HH-LR8-MS Series Instruction Manual

MS Long-Range
Handheld Transmitter
Data Guide

Table of Contents
1 Description
1 Features
1 Applications
2 Ordering Information
2 (OHFWULFDO6SHFLĬFDWLRQV
3 Theory of Operation
4 Setting the Transmitter Address
4 OTX-***-HH-LR8-MS Button Assignments
5 Contention Considerations
5 Battery Replacement
5 Assembly Diagram
6 Labeling / Instruction Requirements
8 Typical Applications
11 Resources
Warning: Some customers may want Linx radio frequency (“RF”)
products to control machinery or devices remotely, including machinery
or devices that can cause death, bodily injuries, and/or property
damage if improperly or inadvertently triggered, particularly in industrial
settings or other applications implicating life-safety concerns (“Life and
Property Safety Situations”).
NO OEM LINX REMOTE CONTROL OR FUNCTION MODULE
SHOULD EVER BE USED IN LIFE AND PROPERTY SAFETY
SITUATIONS. No OEM Linx Remote Control or Function Module
should be modified for Life and Property Safety Situations. Such
modification cannot provide sufficient safety and will void the product’s
regulatory certification and warranty.
Customers may use our (non-Function) Modules, Antenna and
Connectors as part of other systems in Life Safety Situations, but
only with necessary and industry appropriate redundancies and
in compliance with applicable safety standards, including without
limitation, ANSI and NFPA standards. It is solely the responsibility
of any Linx customer who uses one or more of these products to
incorporate appropriate redundancies and safety standards for the Life
and Property Safety Situation application.
Do not use this or any Linx product to trigger an action directly
from the data line or RSSI lines without a protocol or encoder/
decoder to validate the data. Without validation, any signal from
another unrelated transmitter in the environment received by the module
could inadvertently trigger the action.
All RF products are susceptible to RF interference that can prevent
communication. RF products without frequency agility or hopping
implemented are more subject to interference. This module does not
have a frequency hopping protocol built in.
Do not use any Linx product over the limits in this data guide.
Excessive voltage or extended operation at the maximum voltage could
cause product failure. Exceeding the reflow temperature profile could
cause product failure which is not immediately evident.
Do not make any physical or electrical modifications to any Linx
product. This will void the warranty and regulatory and UL certifications
and may cause product failure which is not immediately evident.
!

– –
1
Description
The Linx OTX-***-HH-LR8-MS Long-Range
Handheld Transmitter is ideal for general-
purpose 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 1,000 feet (300m) when combined
with an LR or LT Series module. It can
be configured with 1 to 8 buttons and the
keypad and labeling can be customized.
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 an MS
Series decoder, transmitter identity can
be determined and button permissions
established. The unit uses a single 3V
CR2032 lithium button cell.
Features
s FCC, Canada and CE
pre-certified
s 1 to 8 buttons
s Small package
s Customizable keypad
Applications
s General remote control
s Keyless entry
s Garage / gate openers
s Lighting control
s Call systems
s Home / industrial automation
MS Long-Range Handheld Transmitter
Data Guide
Revised 3/18/2015
2
1
3
4
A
B
C
D
ON
ON
ON
ON
FASCO
Lights
Spa
ON
ON
ON
OFF
OFF
OFF
Pool
0.60"0.20"
1.375"
2.81"
1.62"
2.00"
1.35"
R 0.2"
Figure 1: Package Dimensions
Figure 2: With a one-time NRE and minimum
order, Linx can configure the keypad and label
areas to meet your specific requirements.

– – – –
2 3
Ordering Information Theory of Operation
The OTX-***-HH-LR8-MS Long-Range Handheld Transmitter combines an
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 which continues until the button is released.
The encoder data is used to modulate the transmitter which conveys the
data into free space through the antenna. 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 the LT 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 an MS Series decoder, ranges of up
to 1,000 feet (300m) are possible. Applications operating over shorter
distances also benefit from the increased link reliability and superior noise
immunity provided by the LR Series receiver.
Electrical Specifications
Parameter Designation Min. Typ. Max. Units Notes
Power Supply
Operating Voltage VCC 2.1 3.0 3.6 VDC
Supply Current lCC 3.4 mA
Power-Down Current lPDN 5.0 nA 1
Transmitter Section
Transmit Frequency Range FC
OTX-315-HH-LR8-MS 315 MHz
OTX-418-HH-LR8-MS 418 MHz
OTX-433-HH-LR8-MS 433.92 MHz
Center Frequency Accuracy –50 +50 kHz
Environmental
Operating Temperature Range –40 +85 °C 1
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Ordering Information
Part Number Description
OTX-***-HH-LR8-MS-xxx MS Long-Range Handheld Transmitter
MDEV-***-HH-LR8-MS MS Long-Range Transmitter Master Development System
*** = 315, 418 (Standard) or 433.92MHz
xxx = Custom color, leave blank for black
Figure 3: Ordering Information
1. Characterized, but not tested
Figure 4: Electrical Specifications

– – – –
4 5
Setting the Transmitter Address
The MS Long-Range Handheld
Transmitter allows the selection
of one of 16,777,216 (224) unique
addresses. All transmitters are
supplied set to a unique address
to avoid contention with other
units; however, the address can be
changed. This is accomplished by
using a paper clip or probe to press
the CREATE button on the board
through the hole in the back of the
case. Press the button and an LED
lights up in the MODE_IND window,
indicating that the address is being
created. The address is randomized for as long as the button is held down.
Release the button and the randomized address is saved and the LED
begins flashing to indicate that the Control Permissions may now be set.
Press the buttons that the transmitter should have the authority to access.
Press the CREATE 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 needs 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
Figure 6 illustrates the relationship between the button locations and
encoder data lines.
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 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.
Battery Replacement
The remote unit utilizes a standard CR2032 lithium
button cell. In normal use, it provides 1 to 2 years of
operation. To replace the battery, remove the access
cover by pressing firmly on the label area and sliding it
off. Once the unit is open, remove the battery by sliding
it from beneath the holder. Replace it with the same
type of battery while observing the polarity shown in
Figure 7.
There may be the risk of explosion if the battery is
replaced by the wrong type.
Assembly Diagram
Battery access
MODE_IND Window
CREATE Button
D6 D7
D4 D5
D2 D3
D0 D1
FCC ID: OJM-OTX-XXX-LRMSA
IC: 5840A-LRMSXXXA
418MHz
Figure 5: CREATE Button Access
Figure 6: OTX-***-HH-LR8-MS Button Assignments
Figure 7: Battery Access
Figure 8: OTX-***-HH-LR8-MS Assembly
+

– – – –
6 7
Labeling / Instruction Requirements
The transmitter has been pre-certified for FCC Part 15 and Industry Canada
license-exempt RSS standards for an intentional radiator. 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.
It has already been labeled in accordance with FCC, Industry Canada
and CE regulations. 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. EU does not require a statement.
INSTRUCTION TO THE USER
This device complies with Part 15 of the FCC Rules and Industry Canada license-
exempt RSS standard(s). Operation of this device is subject to the following two
conditions:
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:
 Reorient or relocate the receiving antenna.
 Increase the separation between the equipment and receiver.
 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.
7KHXVHULVFDXWLRQHGWKDWFKDQJHVDQGPRGL¿FDWLRQVPDGHWRWKHHTXLSPHQWZLWKRXW
the approval of manufacturer could void the user’s authority to operate this equipment.
Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux
appareils radioexempts de licence. L'exploitation est autorisée aux deux conditions
suivantes : (1) l'appareil ne doit pas produire de brouillage, et (2) l'utilisateur de
l'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est
susceptible d'en compromettre le fonctionnement.

– – – –
8 9
Typical Applications
The signal sent by the MS Long-Range Transmitter
can be received by an LR Series receiver module
or LT Series transceiver module. The outstanding
sensitivity of the LR Series receiver offers the best
range when used with a Linx OEM transmitter. The
receiver module is then connected directly to an MS
Series decoder, which decodes the received signal.
When a button is pressed on the transmitter, a
corresponding line on the decoder goes high. This
is then connected to external circuitry to perform
whatever function is required by the application.
The decoder must learn the transmitter’s address before they can work
together. This is done by taking the LEARN line on the decoder high,
typically with a pushbutton switch. The MODE_IND line starts switching
(if a LED is attached, this causes 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. "Figure 10: LR Receiver and MS Decoder
Schematic" on page Figure 10 shows a schematic for a typical application.
The MS Long-Range Transmitter is set to 9,600bps, so SEL_BAUD0
should be tied high and SEL_BAUD1 tied low. The decoder has several
unique features, such as Latch Mode, Receiver Control, and TX_ID.
If the LATCH line is tied to VCC, the outputs go high on the first
transmission, then low on the second. Figure 10 shows it tied low, so
the outputs are momentary (high for as long as a signal is received that
instructs the decoder to make them high).
The RX_CNTL line can be connected to the PDN line of the receiver and
the decoder activates the receiver with a 10% duty cycle. This greatly
reduces 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.
The TX_ID line outputs 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 at www.linxtechnologies.com.
G
N
D
G
N
D
V
CC
N
C
1
N
C
2
N
C
3
G
N
D
4
V
CC
5
PDN
6
R
SSI
7
DATA
8
N
C
9
N
C
1
0
N
C
11
N
C
12
N
C
1
3
N
C
14
G
N
D
1
5
ANT
1
6
RXM
-
LR
22
0
D
6
D7
SEL
_
BAUD
0
SEL
_
BAUD
1
G
N
D
G
N
D
LAT
CH
RX
_
CNT
L
TX
_
I
D
MODE_IN
D
D
5
D4
D
3
D2
V
CC
V
CC
D
1
D
0
DATA
_
I
N
LEARN
1
2
3
4
5
6
7
8
9
1
0
11
12
1
3
14
1
5
1
6
17
1
8
1
9
2
0
LI
C
AL-DE
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-M
S001
V
CC
G
N
D
G
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CC
Figure 9: Receiver and Decoder
Figure 10: LR Receiver and MS Decoder Schematic

– – – –
10 11
Resources
Support
For technical support, product documentation, application notes, regulatory
guidelines and software updates, visit www.linxtechnologies.com
RF Design Services
For customers who need help implementing Linx modules, Linx offers
design services including board layout assistance, programming,
certification advice and packaging design. For more complex RF solutions,
Apex Wireless, a division of Linx Technologies, creates optimized designs
with RF components and firmware selected for the customer’s application.
Call [phone] ([phone] if outside the United States) for
more information.
Antenna Factor Antennas
Linx’s Antenna Factor division has the
industry’s broadest selection of antennas
for a wide variety of applications. For
customers with specialized needs, custom
antennas and design services are available along with simulations of
antenna performance to speed development. Learn more at
www.linxtechnologies.com.
VCC
R1 100k
SW1
1SW2 2SW3 3SW4 4SW5 5SW6 6SW7 7SW8 8COM 9SM1
R2 100K
VCC
1 23
4
U3 DPAK-X2
VCC GND
GND
1 23
4
U5 DPAK-X2
1 23
4
U4 DPAK-X2
VCC
VCC
GND GND
GND
S1 Learn
GND
D1 LED
R3 200
GND
R4 100K
GND
R5 100K
R6 100K
R7 100K
R8 100K
R9 100K
R10 100K
R11 100K
VCC GND
R12 100k
GND
B1 BAT-LINX2032
ANT1 ANTENNA
1 23
4
U2 DPAK-X2
GND
1
DATA IN
2
GND
3
LADJ/VCC
4RF OUT 5
GND 6 VCC 7
PDN 8
TX1 TXM-XXX-LR
GND GND
GND
R13
C1 4.7uF
D6 D7 SEL_BAUD SEL_BAUD1/HS_GND GND GND KEY_IN/MS_GND TX_CNTL DATA_OUT MODE_IND CREATE_ADDR
SEND
D0 D1
VCC VCC
D2 D3 D4 D5
U1 LICAL-ENC-MSHS
C3
4.7uF
C2
10pF
R23 100k
VCC
Set For FCC
Compliance
Figure 11: OTX-***-HH-LR8-MS Schematic Diagram

Linx Technologies
159 Ort Lane
Merlin, OR, US 97532
3090 Sterling Circle, Suite 200
Boulder, CO 80301
Phone: [phone]
Fax: [phone]
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 to our products 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. “Typical” parameters can and do vary over lots and
application. Linx Technologies makes no guarantee, warranty, or representation regarding the suitability of any
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intended application. At Customer’s request, Linx Technologies may provide advice and assistance in designing
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