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Summary of Contents for Linx MDEV-868-NT
- Page 1 NT Series Master Development System User's Guide...
- Page 2 A large-print version of this document is available at www.linxtechnologies.com.
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Page 3: Table Of Contents
Table of Contents Introduction Ordering Information NT Series Transceiver Development Board Board Objects Initial Setup Troubleshooting The Prototyping Area The TX Power Select Switch The Transceiver Area The Power Area The Evaluation Area The Range Test Area The PC Control Area The PC Software Using the Boards as a Design Reference About Antennas... -
Page 5: Introduction
User's Guide Figure 1: NT Series Master Development System Introduction The Linx NT Series RF transceiver modules offer a simple, efficient and cost-effective method of adding wireless communication capabilities to any product. The Master Development System (Figure 1) provides a designer with all the tools necessary to correctly and legally incorporate the NT Series into an end product. -
Page 6: Ordering Information
Ordering Information Ordering Information Part Number Description MDEV-868-NT 868MHz NT Series Master Development System MDEV-900-NT 900MHz NT Series Master Development System Figure 2: Ordering Information NT Series Transceiver Development Board Figure 3: NT Series Transceiver Development Board Board Objects 1. Prototype Area 10. -
Page 7: Initial Setup
Range Test The development boards feature an onboard Linx MT Series transcoder which facilitates range testing. Buttons on one board activate a light or buzzer on the other. A confirmation LED provides visual acknowledgment that a transmission was received across the wireless link. -
Page 8: The Prototyping Area
• Make sure that the Baud Rate and Channel switches are set the same on both boards • Check that the antennas are connected • Make sure that a jumper is installed on the Module Power Header • Make sure that the batteries are not dead If all of these appear to be in order, please call +1 800 736 6677 or e-mail techsupport@linxtechnologies.com for technical support. -
Page 9: The Tx Power Select Switch
The TX Power Select Switch The board has a switch to select among three different transmitter output power levels (Figure 5). The right position sets the module to full power of about 12dBm. The center position sets the output power to about 0dBm, which is the legal limit for most applications. -
Page 10: The Power Area
The Power Area The Power Area has two switches that control power to the board and the type of operation (Figure 7). The Master Power switch supplies power from the 9V battery or the power jack to the board. The power jack accepts a 2.5mm plug with the tip ground and the shell 7 to 12VDC. - Page 11 Figure 8: The Development Board Level Adjust Section The right position puts the module into receive mode. The yellow RX LED lights up and data received by the module is output on the yellow DATA_OUT test point. These two configurations allow the module to transmit and receive custom data while controlling the baud band and channel with the frequency dials on the board.
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Page 12: The Range Test Area
The Range Test Area The board features an MT Series remote control transcoder with two push buttons, a buzzer and an LED. The two boards in the kit are populated differently so that the button inputs on one board are outputs on the other board. -
Page 13: The Pc Control Area
Range performance is determined by many interdependent factors. If the range you are able to achieve is significantly less than specified by Linx for the products you are testing, then there is likely a problem with either the board or the ambient RF environment in which the board is operating. -
Page 14: The Pc Software
The left side of the window contains labels that expand to show links to useful information (Figure 12). This includes the Linx Technologies contact information and links to the website for the latest product documentation and software updates. Clicking on these links opens the page in the computer’s default web... - Page 15 The command portion of the window starts in the middle of the window (Figure 13). At the top is a box that states the product name, firmware version and Figure 13: Development Kit PC Software serial number. Below this is a selection that determines how the module is configured (Figure 14).
- Page 16 The “Read Active Settings” button at the bottom (Figure 16) reads the existing configuration settings from the module and adjusts the values in the configuration sections based on the Figure 16: Development Kit PC Software module’s current configuration. The right column in the window starts with the Profile section (Figure 17).
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Page 17: Using The Boards As A Design Reference
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 may be considered for a design. Included with the development system is a Linx CW Series connectorized whip antenna that should be connected prior to using the kit. -
Page 18: Board Control
Board Control BOARD CONTROL BOARD CONTROL RE3/MCLR/VPP RB7/PGD RE3/MCLR/VPP RB7/PGD RA0/AN0/SS RB6/PGC RA0/AN0/SS RB6/PGC RA1/AN1 RB5/AN13 RA1/AN1 RB5/AN13 DACOUT/AN2/RA2 RB4/AN11 STDBY DACOUT/AN2/RA2 RB4/AN11 STDBY DATA_CTL1 AN3/RA3 RB3/AN9 TX_SEL DATA_CTL1 AN3/RA3 RB3/AN9 TX_SEL DATA_CTL2 RB2/AN8 RNG_SEL DATA_CTL2 RB2/AN8 RNG_SEL CH_BD_CTL SS/AN4/RA5 RB1/AN10 RX_SEL CH_BD_CTL... -
Page 19: Transceiver Area
Transceiver Area TRANSCEIVER AREA ANT1 CONREVSMA001 TRANSCEIVER AREA ANTENNA ANT1 CONREVSMA001 ANTENNA DATA_IN DATA_IN DATA_OUT DATA_OUT VCCM TRPT/PKT TRPT/PKT CHN_SEL0 DATA_IN DATA_IN VCC2 DATA_OUT DATA_OUT VCCM CHN_SEL1 TRPT/PKT TRPT/PKT 100K CHN_SEL2 CHN_SEL0 LADJ LVL_ADJ CMD_DATA_BAUD CD_BAUD VCC2 READY CMD_DATA_TYPE CD_TYPE VCC2 CHN_SEL1 100K... -
Page 20: Range Test Area
Range Test Area RANGE TEST AREA 100K RANGE TEST AREA 100K 0.1uF 100K 100K 100K 100K 100K 100K CRT/LRN 0.1uF ENC_SEL LATCH SER_IO SEL_BAUD 100K 100K 100K CONFIRM MODE_IND NS/DNP TR_PDN T/R_SEL_R TR_SEL 100K 100K CRT/LRN DATA_MT TR_DATA 200 ohm ENC_SEL LATCH 0 ohm... -
Page 21: Evaluation Area
Evaluation Area EVALUATION AREA TX_SEL RNG_SEL EVALUATION AREA RX_SEL TX_SEL CS0_S BAUD1_S RNG_SEL RX_SEL CS2_S CS1_S BAUD0_S CS0_S BAUD1_S Figure 26: Evaluation Area LEDS CS2_S CS1_S BAUD0_S LEDS LEDs 2.2uF 10uF 2.2uF 10uF DIVIDER LOW LED4 RSSI_B LED5 LM3914V DIVIDER LOW LED4 DIVIDER HIGH LED6... -
Page 22: Single Routing
Single Routing SIGNAL ROUTING 0.1uF R50 NS/DNP BAUD1_P R51 NS/DNP BAUD1_S BAUD1 R52 NS/DNP RSSI_P BAUD0 R54 NS/DNP RSSI BAUD0_P R55 NS/DNP RSSI_B BAUD0_S 5.1M ALL_EN CH_BD_CTL MC74HC4053A 0.1uF R44 NS/DNP CS1_P R45 NS/DNP CS1_S R46 NS/DNP CS2_P R48 NS/DNP CS0_P R47 NS/DNP R49 NS/DNP... -
Page 23: Online Resources
Online Resources www.linxtechnologies.com If you have questions regarding any Linx product and have Internet access, make www.linxtechnologies.com your first stop. Day or night, the Linx website gives you instant access to the latest information regarding the products and services of Linx. It’s all here, including: •... - Page 24 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.
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