Linx Technologies CMD-HHCP-XXXB Compact Handheld Transmitter User Manual
Linx Technologies Compact Handheld Transmitter
User Manual
OEM Compact Handheld
Transmitter
Data Guide
Warning: Linx radio frequency ("RF") products may be
used 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. No Linx
Technologies product is intended for use in any application without
redundancies where the safety of life or property is at risk.
The customers and users of devices and machinery controlled with
RF products must understand and must use all appropriate safety
procedures in connection with the devices, including without limitation,
using appropriate safety procedures to prevent inadvertent triggering by
the user of the device and using appropriate security codes to prevent
triggering of the remote controlled machine or device by users of other
remote controllers.
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. This module does not
have data validation built in.
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 frequency agility 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.
!Table of Contents
1 Description
1 Features
1 Applications
2 Ordering Information
2 Electrical Specications
3 Theory of Operation
4 Protocols
5 Setting the Transmitter Address
5 Button Assignments
6 Connection Considerations
6 Battery Replacement
6 Assembly Diagram
7 Labeling / Instruction Requirements
8 Receivers
9 Typical Applications
11 Resources
– –
1
Description
The CMD-HHCP-***-xxx-MD Compact
Handheld transmitter is ideal for general
remote control and command applications.
As a part of our DS Series encoder-based
OEM family, it has been pre-certified
for FCC Part 15, Industry Canada, and
European CE (433MHz only) compliance,
reducing development costs and time to
market. Available in 315, 418 (standard) or
433.92MHz, this compact remote has a
transmission range of up to 750 feet
line of sight. The transmitter unit can be
configured with 1 to 8 buttons and the
keypad and labeling can be customized.
Selectable addressing allows the creation
of up to 1,022 distinct transmitter-receiver
relationships. The address can be easily
changed via an externally accessible DIP
switch. The transmission can be decoded
using a matching Linx Function Module, KH2
or KH3 Series receiver / decoder, or a Linx LR or LT Series receiver paired
with a decoder IC or microcontroller. The unit uses a single 3V CR2032
lithium button cell.
Features
• FCC, Canada and CE
pre-certified
• 1 to 8 buttons
• Customizable keypad
• Two protocols for performance
(serial) and compatibility (Holtek)
Applications
• General remote control
• Keyless entry
• Garage / gate openers
• Lighting control
• Call systems
• Home / industrial automation
OEM Compact Handheld Transmitter
Data Guide
Revised 6/17/13
2.00"
1.35"
R 0.2"
2.81"
1.62" 0.60"0.20"
Figure 1: Package Dimensions
2
1
3
4
A
B
C
D
ON
ON
ON
ON
FASCO
Lights
Spa
O
N
O
N
O
N
O
FF
O
FF
O
FF
Pool
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
Theory of Operation
The CMD-HHCP-***-MD Compact Handheld transmitter combines the LR
Series transmitter with an internal Splatch Series antenna and an on-board
DS Series encoder IC to form a simple, yet highly reliable, RF remote
control transmitter. The LR 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 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 IC is enabled. The encoder detects the
logic states of the address lines and button data lines. These states are
formatted into a three-word transmission cycle that continues until the
button is released. The encoder data is used to modulate the transmitter,
which, through the antenna, conveys the data into free space. On the
receiver side, a decoder IC or custom microcontroller is used to check
the transmitter’s address bits against the address settings of the receiving
device. 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 LR, KH2, KH3 LT and OEM 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 DS Series decoder, ranges of up to 750 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.
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
CMD-HHCP-315-MD 315 MHz
CMD-HHCP-418-MD 418 MHz
CMD-HHCP-433-MD 433.92 MHz
Center Frequency Accuracy –50 +50 kHz
Environmental
Operating Temperature Range –40 +85 °C 1
Electrical Specications
Ordering Information
Part Number Description
CMD-HHCP-***-xxx-MD Compact Handheld Transmitter
EVAL-***-HHCP HHCP Basic Evaluation Kit
*** = 315, 418 (Standard) or 433.92MHz
xxx = Custom color, leave blank for black
Ordering Information
Figure 3: Ordering Information
Figure 4: Electrical Specifications
1. Characterized, but not tested
– – – –
4 5
Setting the Transmitter Address
The Compact Handheld transmitter
allows the selection of one of 1,022
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
using internal DIP switches as shown.
The switches are accessed by
removing the DIP switch access cover
on the back of the transmitter.
If the switch is on, the address line
is connected to ground, otherwise it is
pulled to supply. The receiver’s address
must match exactly in order for the units to communicate. Application Note
AN-00300 describes in detail how to set the address to match any of the
receivers offered by Linx. This note can be found in the Support section of
the Linx website, www.linxtechnologies.com.
Button Assignments
Figure 7 illustrates the relationship between the button locations and
encoder data lines.
OFF ON
A0 =
1
A1 =
2
A2 =
3
A3 =
4
A4 =
5
A5 =
6
A6 =
7
A7 =
8
A8 =
9
A9 = 10
D7 D6
D5 D4
D3 D2
D1 D0
Figure 6: DIP Switch Assignments
Figure 7: Button Assignments
Protocols
The DS Series encoder inside the Compact Handheld transmitter supports
two protocols. The first protocol is based on the Holtek HT640 encoder
and is completely backwards compatible with older generation transmitters
and systems based on the HT658 decoder. The second is a serial protocol
that offers more noise immunity and faster response time while keeping the
simple addressing.
The transmitter can use only one protocol at a time. The protocols do not
work together.
The protocol is selected with a switch next to the battery. Figure 5 shows
this switch.
If the switch is toward the top then the Holtek protocol is selected. If the
switch is toward the bottom then the serial protocol is selected.
Figure 5: Protocol Selection Switch
Note: Setting all of the DIP switches on or all of them off are not valid
addresses. At least one switch must be different from the rest.
– – – –
6 7
Connection 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. 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 Figure 8.
Assembly Diagram
+
Battery
access
Figure 8: Battery Access
Figure 9: CMD-HHCP-***-MD Assembly
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 licence-
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.
Theuseriscautionedthatchangesandmodicationsmadetotheequipmentwithout
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 outstanding sensitivity of the LR Series receiver offers the best range
when used with the Handheld transmitter. When using the LR Series
receiver, the DS Series decoder chip should be used to decode the
received signal. This decoder has ten address lines that must match the
transmitter address lines. A DIP switch is commonly used to set these,
but they can also be hardwired. As long as the address lines match, when
a button on the transmitter is pressed, a corresponding data line on the
decoder (D0–D7) goes high. These data lines can then be connected
to external circuitry to perform whatever function is required by the
application.
Figure 11 shows a typical schematic using the LR Series receiver and the
DS Series decoder.
P_SEL
1
D0
2
D1
3
D2
4
D3
5
D4
6
D5
7
GND
8
D6
9
D7
10
E/D_SEL
11
D_CFG
12
A_CFG0
13
A_CFG1
14 A0 15
A1 16
A2 17
A3 18
GND 19
VCC 20
A4 21
A5 22
A6 23
A7 24
A8 25
A9 26
TE/DI 27
VT/DO 28
LICAL-EDC-DS001
VCC
GND
GND
GND
VCC
GND
D0
D1
D2
D3
D4
D5
D6
D7
VT
1
2
3
20
19
18
4
5
6
17
16
15
7
8
9
14
13
12
10 11
100k 100k 100k 100k 100k
100k
100k
100k
100k100k
VCC
GND
VCC
GND
VCC
Holtek
Serial
GND
GND
GND
ANTENNA
NC
1
NC
2
NC
3
GND
4
VCC
5
PDN
6
RSSI
7
DATA
8NC 9
NC 10
NC 11
NC 12
NC 13
NC 14
GND 15
ANT 16
RXM-xxx-LR
VCC
Figure 11: LR Receiver and DS Decoder Schematic
Receivers
There are four options for receivers within the Linx
product line. The first option is to use one of the OEM
Function Modules, such as the Relay Module. These
items are also pre-certified and can be immediately
included in a product.
The other options are to use one of the Linx receiver
modules. The signal sent by the Keyfob transmitter
can be received by the LR Series receiver module or
the LT Series transceiver module. These modules can
be connected to the DS Series decoder to decode the
signal, or a custom microcontroller can be programmed
to decode it and take specific action.
The KH2 or KH3 Series offers a slightly simpler solution
by combining the LR Series receiver and the Holtek
or DS Series decoder in a single package. The KH2
Series receiver only supports the Holtek protocol, not the
serial protocol. The KH3 Series receiver supports both protocols.
When a button is pressed on the transmitter, a corresponding line on the
decoder goes high (as long as the addresses match). This can then be
connected to whatever circuitry is required by the application.
Application Note AN-00300 discusses in detail how to set the addresses
on all of the units. Data guides for all of the receivers, the Holtek HT640
encoder, HT658 decoder and the DS Series decoder can be found on the
Linx website, www.linxtechnologies.com.
Figure 10: Linx Receivers
– – – –
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 +1 800 736 6677 (+1 541 471 6256 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.
by
1
2
3
20
19
18
4
5
6
17
16
15
7
8
9
14
13
12
1011
S1
GND
VCC
GND
B1
BAT-HLD-001
1
2
3
4
5
6
7
89
10
11
12
13
14
15
16
RN1
R2
100K
GND
TE
R5 100K
R4 100K
GND
C1
0.1uF
TE
R7
0 ohm
R8
0 ohm
GNDVCC
S2
R1
0 ohm
VCC
TE
Set for FCC
Compliance
GND
R3
GND
GND
VCC
GND
1
DATA
2
GND
3
LADJ/VCC
4ANT5
GND 6
VCC 7
PDN 8
TX1
TXM-XXX-LR
R6 0 ohm
1
2
3
U2
1
2
3
U3
1
2
3
U4
1
2
3
U5
D0
D1
D2
D3
D4
D5
D6
D7
7
8
5
6
3
4
1
29
10
11
12
13
14
15
16
RN2
GND
D0
D1
D2
D3
D4
D5
D6
D7
VCC
SW1 1
SW2 2
SW3 3
SW4 4
SW5 5
SW6 6
SW7 7
SW8 8
COM 9
SM1
MEMBRANE SWITCH
D0
D1
D2
D3
D4
D5
D6
D7
VCC
1
2
3
4
5
6
7
8
9
J1
D0
D1
D2
D3
D4
D5
D6
D7
GND
GND
GND
GND
VCC
P_SEL
1
D0
2
D1
3
D2
4
D3
5
D4
6
D5
7
GND
8
D6
9
D7
10
TE/DI 27
VT/DO 28
A4 21
A5 22
A6 23
A7 24
A2 17
A3 18
GND 19
VCC 20
A0 15
A1 16
A8 25
A9 26
E_D
11
D_CFG
12
A_CFG0
13
A_CFG1
14
U1
LICAL-EDC-DS001
VCC
VCC
D0
D1
D2
D3
D4
D5
D6
D7
RF
1
GND
2
GND
3
GND
4
GND
5
GND
6
ANT1
ANT-XXX-SP
GND
GND
GND
GND
GND
Figure 12: CMD-HHCP-***-MD Schematic
Linx Technologies
159 Ort Lane
Merlin, OR, US 97532
3090 Sterling Circle, Suite 200
Boulder, CO 80301
Phone: +1 541 471 6256
Fax: +1 541 471 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 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
product for use in any specific application. It is Customer’s responsibility to verify the suitability of the part for the
intended application. At Customer’s request, Linx Technologies may provide advice and assistance in designing
systems and remote control devices that employ Linx Technologies RF products, but responsibility for the ultimate
design and use of any such systems and devices remains entirely with Customer and/or user of the RF products.
LINX TECHNOLOGIES DISCLAIMS ANY AND ALL WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE. IN NO EVENT SHALL LINX TECHNOLOGIES BE LIABLE FOR ANY CUSTOMER’S OR
USER’S INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF OR RELATED TO THE DESIGN OR USE
OF A REMOTE CONTROL SYSTEM OR DEVICE EMPLOYING LINX TECHNOLOGIES RF PRODUCTS OR FOR ANY
OTHER BREACH OF CONTRACT BY LINX TECHNOLOGIES. CUSTOMER AND/OR USER ASSUME ALL RISKS
OF DEATH, BODILY INJURIES, OR PROPERTY DAMAGE ARISING OUT OF OR RELATED TO THE USE OF LINX
TECHNOLOGIES RF PRODUCTS, INCLUDING WITH RESPECT TO ANY SERVICES PROVIDED BY LINX RELATED
TO THE USE OF LINX TECHNOLOGIES RF PRODUCTS. LINX TECHNOLOGIES SHALL NOT BE LIABLE UNDER ANY
CIRCUMSTANCES FOR A CUSTOMER’S, USER’S, OR OTHER PERSON’S DEATH, BODILY INJURY, OR PROPERTY
DAMAGE ARISING OUT OF OR RELATED TO THE DESIGN OR USE OF A REMOTE CONTROL SYSTEM OR DEVICE
EMPLOYING LINX TECHNOLOGIES RF PRODUCTS.
The limitations on Linx Technologies’ liability are applicable to any and all claims or theories of recovery asserted
by Customer, including, without limitation, breach of contract, breach of warranty, strict liability, or negligence.
Customer assumes all liability (including, without limitation, liability for injury to person or property, economic loss,
or business interruption) for all claims, including claims from third parties, arising from the use of the Products.
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.
Devices described in this publication may contain proprietary, patented, or copyrighted techniques, components,
or materials.
© 2013 Linx Technologies. All rights reserved.
The stylized Linx logo, Wireless Made Simple, CipherLinx, WiSE and the stylized CL logo are trademarks of Linx Technologies.