OTX-433-HH-CP8-HS

OTX-433-HH-CP8-HS Datasheet

Description Features Applications Ordering Information Electrical Specifications Theory of Operation Security Overview Typical System Setup Using the Optional Keypad Pin Contention Considerations Battery Replacement OTX-***-HH-CP8-HS Button Assignments Assembly Diagram Typical Applications Labeling / Instruction Requirements Master Development System Resources

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OTX-433-HH-CP8-HS	OTX-433-HH-CP8-HS (pdf)

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HS Compact Handheld Transmitter Data Guide ! 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 have a frequency hopping protocol built in, but the developer should still be aware of the risk of interference. 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 Description Features Applications Ordering Information Electrical Specifications Theory of Operation Security Overview Typical System Setup Using the Optional Keypad Pin Contention Considerations Battery Replacement OTX-*-HH-CP8-HS Button Assignments Assembly Diagram Typical Applications Labeling / Instruction Requirements Master Development System Resources HS Compact Handheld Transmitter Data Guide The Linx OTX--HH-CP8-HS Compact Handheld Transmitter is ideal for general- purpose remote control and command applications which require high security. 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 750 feet 230m when combined Figure 1 Package Dimensions with an LR or LT Series module. It can be configured with 1 to 8 buttons and the keypad and labeling can be customized. Security is dramatically enhanced by the on-board HS Series encoder, which uses Cipherlinx technology, a high-security OFF Lights ON OFF Pool OFF ON FASCO encryption algorithm and wireless protocol. When paired with an HS Series decoder, transmitter identity can be determined and button permissions established. The unit Figure 2 With a one-time NRE and minimum order, Linx can configure the keypad and label areas to meet your specific requirements. uses a single 3V CR2032 lithium button cell. • FCC, Canada and CE pre-certified • High security • 1 to 8 buttons • Small package • Customizable keypad Applications • General remote control • Keyless entry • Garage / gate openers • Lighting control • Call systems • Home / industrial automation • Wire elimination Ordering Information Ordering Information OTX--HH-CP8-HS-xxx HS Compact Handheld Transmitter MDEV--HH-CP8-HS HS Compact Transmitter Master Development System = 315, 418 Standard or 433.92MHz xxx = Custom color, leave blank for black Figure 3 Ordering Information Electrical Specifications Electrical Specifications Parameter Designation Min. Typ. Max. Power Supply Operating Voltage Supply Current Power-Down Current Transmitter Section lPDN Transmit Frequency Range OTX-315-HH-LR8-HS OTX-418-HH-LR8-HS OTX-433-HH-LR8-HS Center Frequency Accuracy Environmental Operating Temperature Range Units VDC mA nA MHz kHz Notes 1 Characterized, but not tested Figure 4 Electrical Specifications Theory of Operation The OTX-*-HH-CP8-HS Compact Handheld Transmitter combines an LR Series transmitter and an antenna with an on-board HS Series encoder to form a highly reliable and secure RF remote-control transmitter. The LR Series transmitter is a low-cost, high-performance synthesized OOK transmitter. Its 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 an encrypted message that is output to the transmitter module. This cycle 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 decrypt the transmitter’s commands. If decryption is successful, 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 HS Series decoder, ranges of up to 750 feet 230m are possible. Applications operating over shorter distances also benefit from the increased link reliability and superior noise immunity provided by the LR Series receiver. Security Overview The HS Compact Handheld transmitter uses the HS Series encoder, which is based on Cipherlinx technology. CipherLinx is a high-security encryption algorithm and wireless protocol designed for remote control and remote keyless entry applications. It provides a much greater level of security and many more features than older technologies on the market, such as fixed address or “rolling code” systems. Additionally, the CipherLinx protocol is much more advanced than the simple PWM method employed by many systems. By utilizing an advanced serial protocol, CipherLinx is able to offer superior noise immunity, greater range, and greater link reliability, all of which are key factors in a wireless system. CipherLinx never sends or accepts the same data twice, never loses sync, and changes codes with every packet, not just every button press. The encryption that is used in CipherLinx is based on the Skipjack cipher developed by the U.S. National Security Agency NSA , and is widely considered one of the most secure ciphers available. The CipherLinx algorithm has been evaluated by Independent Security Evaluators ISE , a company that has testified before Congress as experts on electronic security. They concluded that “In short, the CipherLinx protocol in the HS Series is well-designed and is an excellent choice for applications requiring a secure unidirectional link.” In addition to this high level of security, CipherLinx also offers a number of features that are unique among remote control products. These include a large number of data lines, internal key generation, “button level” control permissions, an optional encoder PIN, as well as the ability for the decoder to identify the originating encoder. CipherLinx is based on the NSA-designed cipher Skipjack. Skipjack is a block cipher that has 80-bit keys and 64-bit data blocks. Since each packet is longer than 64 bits, Skipjack must be employed in an encryption mode. The particular encryption mode chosen for CipherLinx is based on the CMC encryption mode, so that the resulting cipher is a special kind of function known as a “strong PRP” sPRP . The encryption mode uses several invocations of Skipjack to encrypt the 128 bits in each message. The definition of these terms is quite involved, but more details can be found in ISE’s evaluation report at The HS Series uses a 40-bit counter to change the appearance of each message. This large counter value and the timing associated with the protocol ensure that the same message is never sent twice and prevents the encoder from ever losing sync with the decoder. The user generates the key with the decoder through multiple button presses. This ensures that the key is random and chosen from among all 280 possible keys. Since all of the keys are created by the user and are internal to the part, there is no list of numbers or seed values anywhere that could be accessed to compromise the system. The user or manufacturer may also set “button level” Control Permissions. Control Permissions determine how the decoder responds to the reception of a valid command, either allowing the activation of an individual data line or not. The decoder is programmed with the permission settings during set-up, and those permissions are retained in the decoder’s non-volatile memory. Typical System Setup The HS Series Compact Handheld Transmitter is intended to make user setup straightforward while ensuring the highest possible security. This inherent ease of use can be illustrated by a typical user setup. The Typical Applications section of the HS Series Decoder Data Guide shows the circuit schematics on which the receiver examples are based. Create an exchange a key from a decoder to the transmitter. GET_KEY Button The handheld transmitter includes an on-board infrared receiver designed to optically receive MODE_IND Window the decoder’s key transmission. Sending the key in this manner preserves security while avoiding the need for a hardwire CREATE_PIN Button

PDF Datasheet Preview

HS Compact Handheld Transmitter

Data Guide
! 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 have a frequency hopping protocol built in, but the developer should still be aware of the risk of interference.

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
Description Features Applications Ordering Information Electrical Specifications Theory of Operation Security Overview Typical System Setup Using the Optional Keypad Pin Contention Considerations Battery Replacement OTX-***-HH-CP8-HS Button Assignments Assembly Diagram Typical Applications Labeling / Instruction Requirements Master Development System Resources

HS Compact Handheld Transmitter

Data Guide

The Linx OTX-***-HH-CP8-HS Compact

Handheld Transmitter is ideal for general-
purpose remote control and command
applications which require high security.

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 750 feet 230m when combined Figure 1 Package Dimensions
with an LR or LT Series module. It can be
configured with 1 to 8 buttons and the keypad and labeling can be customized. Security is dramatically enhanced by the on-board HS Series encoder, which uses Cipherlinx technology, a high-security

OFF Lights ON

OFF Pool

OFF ON

FASCO
encryption algorithm and wireless protocol.

When paired with an HS Series decoder, transmitter identity can be determined and button permissions established. The unit

Figure 2 With a one-time NRE and minimum order, Linx can configure the keypad and label areas to meet your specific requirements.
uses a single 3V CR2032 lithium button cell.
• FCC, Canada and CE pre-certified
• High security
• 1 to 8 buttons
• Small package
• Customizable keypad

Applications
• General remote control
• Keyless entry
• Garage / gate openers
• Lighting control
• Call systems
• Home / industrial automation
• Wire elimination
Ordering Information
Ordering Information

OTX-***-HH-CP8-HS-xxx

HS Compact Handheld Transmitter

MDEV-***-HH-CP8-HS

HS Compact Transmitter Master Development System
*** = 315, 418 Standard or 433.92MHz xxx = Custom color, leave blank for black
Figure 3 Ordering Information

Electrical Specifications

Electrical Specifications

Parameter

Designation Min. Typ. Max.

Power Supply

Operating Voltage Supply Current Power-Down Current Transmitter Section
lPDN

Transmit Frequency Range

OTX-315-HH-LR8-HS

OTX-418-HH-LR8-HS

OTX-433-HH-LR8-HS

Center Frequency Accuracy

Environmental

Operating Temperature Range

Units

VDC mA nA

MHz kHz

Notes 1

Characterized, but not tested

Figure 4 Electrical Specifications

Theory of Operation

The OTX-***-HH-CP8-HS Compact Handheld Transmitter combines an LR Series transmitter and an antenna with an on-board HS Series encoder to form a highly reliable and secure RF remote-control transmitter. The LR Series transmitter is a low-cost, high-performance synthesized OOK transmitter. Its 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 an encrypted message that is output to the transmitter module. This cycle 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 decrypt the transmitter’s commands. If decryption is successful, 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 HS Series decoder, ranges of up to 750 feet 230m are possible. Applications operating over shorter distances also benefit from the increased link reliability and superior noise immunity provided by the LR Series receiver.

Security Overview

The HS Compact Handheld transmitter uses the HS Series encoder, which is based on Cipherlinx technology. CipherLinx is a high-security encryption algorithm and wireless protocol designed for remote control and remote keyless entry applications. It provides a much greater level of security and many more features than older technologies on the market, such as fixed address or “rolling code” systems. Additionally, the CipherLinx protocol is much more advanced than the simple PWM method employed by many systems. By utilizing an advanced serial protocol, CipherLinx is able to offer superior noise immunity, greater range, and greater link reliability, all of which are key factors in a wireless system.

CipherLinx never sends or accepts the same data twice, never loses sync, and changes codes with every packet, not just every button press. The encryption that is used in CipherLinx is based on the Skipjack cipher developed by the U.S. National Security Agency NSA , and is widely considered one of the most secure ciphers available. The CipherLinx algorithm has been evaluated by Independent Security Evaluators ISE , a company that has testified before Congress as experts on electronic security. They concluded that “In short, the CipherLinx protocol in the HS Series is well-designed and is an excellent choice for applications requiring a secure unidirectional link.”

In addition to this high level of security, CipherLinx also offers a number of features that are unique among remote control products. These include a large number of data lines, internal key generation, “button level” control permissions, an optional encoder PIN, as well as the ability for the decoder to identify the originating encoder.

CipherLinx is based on the NSA-designed cipher Skipjack. Skipjack is a block cipher that has 80-bit keys and 64-bit data blocks. Since each packet is longer than 64 bits, Skipjack must be employed in an encryption mode. The particular encryption mode chosen for CipherLinx is based on the CMC encryption mode, so that the resulting cipher is a special kind of function known as a “strong PRP” sPRP . The encryption mode uses several invocations of Skipjack to encrypt the 128 bits in each message. The definition of these terms is quite involved, but more details can be found in ISE’s evaluation report at

The HS Series uses a 40-bit counter to change the appearance of each message. This large counter value and the timing associated with the protocol ensure that the same message is never sent twice and prevents the encoder from ever losing sync with the decoder. The user generates the key with the decoder through multiple button presses. This ensures that the key is random and chosen from among all 280 possible keys. Since all of the keys are created by the user and are internal to the part, there is no list of numbers or seed values anywhere that could be accessed to compromise the system. The user or manufacturer may also set “button level” Control Permissions. Control Permissions determine how the decoder responds to the reception of a valid command, either allowing the activation of an individual data line or not. The decoder is programmed with the permission settings during set-up, and those permissions are retained in the decoder’s non-volatile memory.

Typical System Setup

The HS Series Compact Handheld Transmitter is intended to make user setup straightforward while ensuring the highest possible security. This inherent ease of use can be illustrated by a typical user setup. The Typical Applications section of the HS Series Decoder Data Guide shows the circuit schematics on which the receiver examples are based.

Create an exchange a key from a decoder to the transmitter.

GET_KEY Button

The handheld transmitter includes
an on-board infrared receiver designed to optically receive

MODE_IND Window
the decoder’s key transmission.

Sending the key in this manner preserves security while avoiding the need for a hardwire

CREATE_PIN Button

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived OTX-433-HH-CP8-HS Datasheet file may be downloaded here without warranties.

Datasheet ID: OTX-433-HH-CP8-HS 645786