EVAL-315-HHCP [LINX]

OEM Transmitter Evaluation Kit;


型号：	EVAL-315-HHCP
厂家：	Linx Technologies
描述：	OEM Transmitter Evaluation Kit
文件：	总9页 (文件大小：1418K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

OEM Transmitter

Evaluation Kit

User's Guide

Warning: Some customers may want Linx radio frequency (“RF”)

Linx radio frequency ("RF") products may be

Table of Contents

products to control machinery or devices remotely, including machinery

used to control machinery or devices remotely, including machinery

or devices that can cause death, bodily injuries, and/or property

1 Introduction

2 Ordering Information

2 OEM Transmitter Button Assignments

3 DS Series Receiver / Decoder Evaluation Board

4 Theory of Operation

damage if improperly or inadvertently triggered, particularly in industrial

settings or other applications implicating life-safety concerns (“Life and

settings or other applications implicating life-safety concerns. No Linx

Property Safety Situations”).

Technologies product is intended for use in any application without

redundancies where the safety of life or property is at risk.

NO OEM LINX REMOTE CONTROL OR FUNCTION MODULE

SHOULD EVER BE USED IN LIFE AND PROPERTY SAFETY

The customers and users of devices and machinery controlled with

SITUATIONS. No OEM Linx Remote Control or Function Module

RF products must understand and must use all appropriate safety

4 Using the Kit

5 Setting the Address

should be modiﬁed for Life and Property Safety Situations. Such

procedures in connection with the devices, including without limitation,

modiﬁcation cannot provide sufﬁcient safety and will void the product’s

using appropriate safety procedures to prevent inadvertent triggering by

regulatory certiﬁcation and warranty.

the user of the device and using appropriate security codes to prevent

6 Input Interpretation Selection Switches

6 Selecting the Protocol

7 Development Using the Prototyping Area

7 Using the Boards as a Design Reference

8 Range Testing

Customers may use our (non-Function) Modules, Antenna and

triggering of the remote controlled machine or device by users of other

Connectors as part of other systems in Life Safety Situations, but

remote controllers.

only with necessary and industry appropriate redundancies and

in compliance with applicable safety standards, including without

Do not use this or any Linx product to trigger an action directly

limitation, ANSI and NFPA standards. It is solely the responsibility

from the data line or RSSI lines without a protocol or encoder/

of any Linx customer who uses one or more of these products to

decoder to validate the data. Without validation, any signal from

incorporate appropriate redundancies and safety standards for the Life

9 About Antennas

9 In Closing

another unrelated transmitter in the environment received by the

and Property Safety Situation application.

module could inadvertently trigger the action. This module does not

10 DS Series Decoder Evaluation Board Schematic

11 Resources

have data validation built in.

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/

All RF products r susceptible to RF interference that can prevent

decoder to validate the data. Without validation, any signal from

another unrelated transmitter in the environment received by the module

communication. RF products without f equency agil ty or hopping

could inadvertently trigger the action.

implemented are more subject to interference. This module does not

have frequency agility built in.

All RF products are susceptible to RF interference that can prevent

communication. RF products without frequency agility or hopping

Do not use any Linx product over the limits in this data guide.

implemented are more subject to interference. This module does not

Excessive voltage or extended operation at the maximum voltage could

have a frequency hopping protocol built in.

cause product failure. Exceeding the reﬂow temperature proﬁle could

cause product failure which is not immediately evident.

Do not use any Linx product over the limits in this data guide.

Excessive voltage or extended operation at the maximum voltage could

Do not make any physical or electrical modiﬁcations to any Linx

cause product failure. Exceeding the reﬂow temperature proﬁle could

product. This will void the warranty and regulatory and UL certiﬁcations

cause product failure which is not immediately evident.

and may 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.

OEM Transmitter Basic Evaluation Kit

User's Guide

Figure 1: OEM Transmitter Basic Evaluation Kit

Introduction

Linx OEM RF transmitters offer a simple, efﬁcient and cost-effective method

of adding remote control and command capabilities to any product. The

Basic Evaluation Kit provides a designer all the tools necessary to correctly

incorporate Linx OEM transmitters and receiver modules into a product.

The evaluation board serves several important functions:

•ꢀ Rapid Evaluation: It allows the performance of the transmitters and

receivers to be evaluated quickly in a user's environment.

•ꢀ Range Testing: Using the OEM transmitter and the included

development board, a simplex transmission is generated that can be

used to evaluate the range performance of the products.

•ꢀ Prototype Development: An on-board prototyping area is provided,

which allows for additional circuitry to be placed directly on the board

so that it can act as the ﬁrst prototype of the product. All of the signals

are available on a breakout header for easy access.

•ꢀ Design Benchmark: During the design process of your product, the kit

provides a known benchmark against which the performance of your

own design may be judged.

The kit includes 2 OEM transmitters, 2 DS Series encoders / decoders*, 2

LR Series receivers*, 2 PCB-mount RP-SMA connectors*, 1 development

board, 1 CW Series antenna, 2 AAA batteries and full documentation.

* One part is soldered to each Carrier Board

–

Revised 2/16/2016

Ordering Information

DS Series Receiver / Decoder Evaluation Board

Ordering Information

Part Number

Description

EVAL-***-HHCP

EVAL-***-HHLR

Compact Handheld Basic Evaluation Kit

Long-Range Handheld Basic Evaluation Kit

*** = 315, 418 (Standard) or 433MHz

Figure 2: Ordering Information

Figure 4: DS Series Decoder Evaluation Board

OEM Transmitter Button Assignments

1. Battery – 3VDC (use 2 AAA style batteries)

2. Power Switch

3. Power On Indicator LED

4. Prototyping Area

5. Breakout Header

6. LR Series Receiver Module

7. DS Series Encoder / Decoder

8. Reverse-Polarity SMA Antenna Connector

9. LEDs – D1–D7

10. Buzzer – D0

11. Protocol Selection Switch

12. Data and Address Line Interpretation Conﬁguration Switches

13. Address Conﬁguration DIP Switch

14. Valid Transmission Received LED

CMD-HHCP-***

CMD-HHLR-***

Figure 3: OEM Transmitter Button Assignments

–

Theory of Operation

Setting the Address

The DS Series encoder and decoder each have ten address lines that must

match in order for the transmitter and receiver to talk to each other. If they

do not match, then the decoder ignores the transmission and takes no

action.

OEM Transmitters

Linx OEM transmitters are a great way to quickly bring a remote control

product to market. They are fully assembled and certiﬁed, eliminating the

need for design, tooling, and certiﬁcation. Linx can also customize the

transmitters with customer speciﬁc art, logos or switch layouts.

To set the address on the receiver evaluation board, note the A0–A9 labels

on the board and turn the DIP switches on or off as desired. If a switch is

on, the address line is connected to ground. If it is off, then the address line

is pulled high to VCC.

The operation of the OEM transmitter is straightforward. When a button(s)

is pressed on the OEM transmitter, the states of D0 to D7 are formatted

into packets by an on-board encoder IC. These encoded packets are sent

to a Linx transmitter that, through the antenna, conveys the data into free

space.

Receiver / Decoder Evaluation Board

The receiver board is powered by two AAA batteries. A Linx LR Series

receiver is used for reception of the transmitted signal. This receiver

provides exceptional sensitivity, allowing the transmitter and receiver to

operate at distances of up to 1,000 feet (depending on TX model and

signal conditions). The data recovered by the receiver is decoded by the

DS Series set as a decoder. If the settings of the 10-position DIP switch on

the receiver board match the address setting of the transmitter, the data

line outputs are updated to match the state of the buttons on the OEM

transmitter. To demonstrate this, one data line on the evaluation board is

used to drive a buzzer while the other lines activate LEDs. This board also

has a prototyping area with all of the receiver and decoder lines brought

out to a header.

Figure 4: The Evaluation Board Address DIP Switch

The HHCP and HHLR utilize a ten-position DIP switch that is accessed by

a cover on the back of the remote. The switch numbers match the address

lines with switch number 1 corresponding to A0 and number 10 to A9.

Application Note AN-00300 should be referenced for complete details.

Note: All address switches ON and all switches OFF are not valid

states and are not recognized by the decoder. At least one switch

must be set differently from the rest.

Using the Kit

Using the kit is straightforward. Simply attach the antenna to the board and

install the batteries. Set the address on the transmitter and on the board

to the same settings, turn on the power to the board, and press a button

on the transmitter. When D0 is pressed, the buzzer sounds; when S1–S7

are pressed, the LEDs turn on. When any button (D0–D7) is pressed on the

transmitter, the corresponding decoder output (D0–D7) is active high (V_CC)

on the prototyping header.

Note: All switches (address, protocol select and interpretation

conﬁguration) must match on both the transmitter and the decoder /

receiver board.

–

Input Interpretation Selection Switches

Development Using the Prototyping Area

The DS Series was designed to replace an encoder and decoder from

Holtek. These parts had tri-state lines, so the address and data lines could

be high, low or ﬂoating. The DS can only be high or low, so these selection

switches are included for backwards compatibility. In the case of the OEM

transmitters, the switches should be set as follows: D_CFG to 0 or down,

A_CFG0 to 0 or down and A_CFG1 to 1 or up (Figure 5). These lines are

hardwired in the transmitter so must be set on the receiver board to match.

Please see the DS Series data guide for more information on the input line

interpretation.

In addition to evaluation functions, the boards may also be used for

product development. The evaluation board features a prototyping area for

the addition of application-speciﬁc circuitry. This area has connections to

V_CCat the top and to ground at the bottom that can be used to power any

circuitry that is added.

Note: If added circuitry requires a higher current than can be provided

by the batteries, the batteries must be removed and the board

powered from an external source.

The holes are plated and set at 0.1" on center with a 0.04" diameter,

accommodating industry-standard SIP and DIP packages. The data line

outputs, Valid Transmission (VT) and the DATA line from the receiver (DIN)

have been wired out to a header row to the right of the prototyping area.

This allows easy access for connection to external circuitry. Data line D0 is

connected to a buzzer, D1 to D7 and VT are connected to LEDs.

Figure 5: The Evaluation Board Input Interpretation Selection Switches

Using the Boards as a Design Reference

Selecting the Protocol

Since the OEM transmitters are a ﬁnished product, most of the designer’s

work will be incorporating the receiver into the end product. The basic

evaluation board included in this kit is very simple, yet illustrates some

important techniques that should be incorporated into the board layout.

The receiver’s mounting pads extend slightly past the edge of the part. This

eases hand assembly and allows for better heat conduction under the part

if rework is necessary. A full ground plane ﬁll is placed on the bottom of the

board. This ground plane serves three important purposes:

The DS Series encoder / decoder offers two over-the-air protocols:

Holtek and serial. The Holtek selection is used when communicating with

other Holtek devices. This is a legacy protocol that provides backwards

compatibility.

The serial selection offers a much more reliable protocol that offers better

range and response time. The protocol is selected by a switch on the

HHPC and HHLR transmitter and the Protocol Select Switch on the

evaluation board, as shown in Figure 6. The protocols are not interoperable,

so the switches must be set the same on both sides.

First, since a quarter-wave antenna is employed, the ground plane is

critical to serve as a counterpoise (please see Application Note AN-00500

“Antennas: Design, Application, and Performance” for details on how a

ground plane affects antenna function).

Second, a ground plane suppresses the transfer of noise between stages

of a product as well as unintentional radiation of noise into free space.

Third, a ground plane allows for the implementation of a microstrip feed

between the module and the antenna. The term microstrip refers to a PCB

trace running over a ground plane that is designed to serve as a 50-ohm

transmission line. See the LR Series receiver data guide or the calculator

available on our website for details on microstrip calculations.

Figure 6: The Evaluation Board Protocol Selection Switch

Note: The Holtek protocol should be used for legacy designs. New

desigs should use the serial protocol.

–

Range Testing

About Antennas

Complex mathematical models exist for determining path loss in many

environments. These models vary as the transmitter and receiver are

moved from indoor operation to outdoor operation. Although these models

can provide an estimation of range performance in the ﬁeld, the most

reliable method is to simply perform range tests using the transmitter and

receiver in the intended usage environment.

The choice of antennas is one of the most critical and often overlooked

design considerations. The range, performance and legality of an RF link

are critically dependent upon the type of antenna employed. Linx offers

a variety of antenna styles that can be considered for a design. Included

with the kit is a Linx connectorized whip antenna that should be connected

prior to using the kit. Despite the fact the antenna is not centered on the

board’s ground plane, it exhibits an outstanding VSWR of <1.7 and suitably

demonstrates the module's best practical performance.

Simple range testing can be performed with the transmitter and receiver

evaluation board. To prepare the board for range testing, simply turn it

on by switching the power switch to the ON position. Pressing D0 on the

transmitter activates the buzzer on the receiver board, while D1 activates

the LED.

In Closing

Here at Linx, “Wireless Made Simple” is more than just our motto, it is

our commitment. A commitment to the highest caliber of product, service

and support. That is why, should you have questions or encounter any

difﬁculties using the evaluation kit, you’ll be glad to know many resources

are available to assist you. First, check carefully for the obvious, then

visit our website at www.linxtechnologies.com or call +1 541 471 6256

between 8AM and 4PM Paciﬁc Time to speak with an application engineer.

As the maximum range of the link in an area is approached, it is not

uncommon for the signal to cut in and out as the transmitter moves. This

is normal and can result from other interfering sources or ﬂuctuating signal

levels due to multipath. Multipath results in cancellation of the transmitted

signal as direct and reﬂected signals arrive at the receiver at differing times

and phases. The areas in which this occurs are commonly called “nulls”

and simply walking a little further usually restores the signal. If this does not

restore the signal, then the maximum effective range of the link has been

reached.

Legal Notice: All Linx kits are designed in keeping with high

engineering standards; however, it is the responsibility of the user

to ensure that the products are operated in a legal and appropriate

manner. The purchaser understands that the legal operation may

require additional permits, approvals, or certiﬁcations prior to use,

depending on the country and operation.

To achieve maximum range, keep objects such as your hand away from

the antenna and ensure that the antenna on the transmitter has a clear and

unobstructed line-of-sight path to the receiver board. Range performance

is determined by many interdependent factors. If the range you are able to

achieve is signiﬁcantly less than what is speciﬁed for the products being

tested, then there is likely a problem either with the board or the ambient

RF environment in which the board is operating. First, check the battery,

switch positions, address settings, and antenna connection. Next, measure

the receiver's RSSI voltage with the transmitter turned off to determine

if ambient interference is present. If this fails to resolve the issue, please

contact Linx technical support.

–

DS Series Decoder Evaluation Board Schematic

Resources

Support

For technical support, product documentation, application notes, regulatory

guidelines and software updates, visit www.linxtechnologies.com

RF Design Services

V A L I D T X M B L U E

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.

P O W E R G R E E N

Antenna Factor Antennas

Linx’s Antenna Factor division has the

industry’s broadest selection of antennas

G N D

2 - 5

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.

Figure 7: DS Series Decoder Board Schematic

–

Linx Technologies

159 Ort Lane

Merlin, OR, US 97532

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 the customer’s responsibility to verify the suitability of the part for

the intended application. NO LINX PRODUCT IS INTENDED FOR USE IN ANY APPLICATION WHERE THE SAFETY

OF LIFE OR PROPERTY IS AT RISK.

Linx Technologies DISCLAIMS ALL WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

PURPOSE. IN NO EVENT SHALL LINX TECHNOLOGIES BE LIABLE FOR ANY OF CUSTOMER’S INCIDENTAL OR

CONSEQUENTIAL DAMAGES ARISING IN ANY WAY FROM ANY DEFECTIVE OR NON-CONFORMING PRODUCTS

OR FOR ANY OTHER BREACH OF CONTRACT BY LINX TECHNOLOGIES. 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. The Customer will indemnify,

defend, protect, and hold harmless Linx Technologies and its ofﬁcers, employees, subsidiaries, afﬁliates,

distributors, and representatives from and against all claims, damages, actions, suits, proceedings, demands,

assessments, adjustments, costs, and expenses incurred by Linx Technologies as a result of or arising from any

Products sold by Linx Technologies to Customer. 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. Under no circumstances shall any user be

conveyed any license or right to the use or ownership of such items.

The stylized Linx logo, Wireless Made Simple, WiSE, CipherLinx and the stylized CL logo are trademarks of Linx Technologies.

EVAL-315-HHCP [LINX]

相关型号：

SI9130DB

SI9135LG-T1

SI9135LG-T1-E3

SI9135_11

SI9136_11

SI9130CG-T1-E3

SI9130LG-T1-E3

SI9130_11

SI9137

SI9137DB

SI9137LG

SI9122E