Manual de instrucciones de Black Box MDR210A-485

Manual de instrucciones del aparato Black Box MDR210A-485

Aparato: Black Box MDR210A-485
Categoría: Router
Fabricante: Black Box
Tamaño: 0.89 MB
Fecha de añadido: 12/10/2013
Número de páginas: 14
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Resumen del contenido incluido en la página 1

MDR210A-485

900 MHz. Frequency Hopping RS-485 Master/Slave auto-sensing
radio interface.



































Black Box Corporation – Lawrence, PA - http://www.blackbox.com - Ph 877-877-BBOX - Fax 724-746-0746

Resumen del contenido incluido en la página 2

Table of Contents Description………………………………………………………………3 Features………………………………………………………………….4 Serial Port Scanning…………………………………………………5 Application Fields…………………………………………………….5 Networks…………………………………………………………………5 Module Address………………………………………………………..6 Data Validity…………………………………………………………6, 7 Glossary……………………………………………………………….7, 8 Application Notes………………………………………………..9, 10 Appendix A—Specifications..…………………………………….11 FCC Compliance…………….….…………………………………….12

Resumen del contenido incluido en la página 3

Description The MDR210A-485 uses an embedded 100-milliwatt, frequency-hopping wireless modem that provides communication between a local RS485 network and a remote network of RS485 connected devices. The MDR210A-485 will automatically sense the direction of data flow and switch the RS485 and Radio devices accordingly. The MDR210A-485 can be placed in a network of RS485 devices and appear as a slave repeater of remote RS485 devices or it can be placed in a network of one or many RS485

Resumen del contenido incluido en la página 4

Features res • RS485 Master/Slave auto-sensing radio interface. • Built in 900MHz frequency hopping radio for long-range General Purpose wireless interface. 900 MHz. Spread Spectrum Frequency Hopping Transceiv • Provides remote capability to RS485 Modbus networks. • Automatically senses Master or Slave data flow. • Multiple radios allow many remote RS485 networks to coexist logically. • Provides means to connect legacy RS485 device

Resumen del contenido incluido en la página 5

9XSTREAM-192/96 Radio Introduction The 9XSTREAM-192/96 radio is a 100-milliwatt frequency hopping wireless modem that communicates with other equipment using a standard 19200 or 9600-baud asynchronous serial data stream. The radio is half-duplex and can sustain a continuous data stream at the specified data rate. The 9XSTREAM operates within the 900 MHz ISM Band under Part 15 of the FCC Rules and Regulations. IMPORTANT: The 9XSTREAM radio has been certified as a module by the FCC

Resumen del contenido incluido en la página 6

9XStream Frequency Hopping Data Radio FCC Compliance Warning: Changes or modifications to the 9XStream Data Radio not expressly approved by MaxStream, Inc. could void the user’s authority to operate this product. Note: 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. Th

Resumen del contenido incluido en la página 7

Antenna Antenna Connector MMCX Female Antenna Impedance 50 Ohms unbalanced Approved Antennas Integral wire antenna (factory installed) Astron AXQ9PRLMMCX – 1/4 wave flexible whip Astron AXH900 RP SMAR – 1/2 wave flexible whip, SMA Serial Port Scanning The Scan Function is provided to assist the user when they are unsure which communication port the MDR210A-485 is attached to or what baud rate it has been set to. The Scan Function will attempt to communicate with the MDR210A

Resumen del contenido incluido en la página 8

hop in a different sequence) the two modules will jump to separate channels on the next hop. Using networks, multiple module pairs can operate in the same vicinity with minimal interference from each other. The network parameter is user-definable using the MDR210A-485 Set-up Hop Table. Module Address Module Addresses provide another level of addressing among the MDR210A-485 modules. Each module in a network can be configured with a 16-bit Module Address to establish selective

Resumen del contenido incluido en la página 9

Figure 2a – Generation of Data Packets Data Validity (Cont.) Header Data from Buffer Data CRC No Data To Idle Mode Figure 2b – Transmit Mode Description To verify data integrity, a 16-bit cyclic redundancy check (CRC) is computed for the transmitted data and attached to the end of each data packet before transmission. The receiver will then compute the

Resumen del contenido incluido en la página 10

Data Packets – A grouping of data to be sent over-the-air. Each data packet contains a header and data that is collected from the data buffer. The size of the packets varies up to 64 bytes depending on how many bytes of data are in the data buffer. Glossary (cont.) Frequency Hopping Spread Spectrum (FHSS) – Method employed by the MDR210A- 485 module which involves transmitting data over several different channels in a specific channel hopping sequence known by the transmitter and

Resumen del contenido incluido en la página 11

Application Notes Why does Sensitivity Matter? Receiver sensitivity is the lowest power level at which the receiver can detect a wave and demodulate data. Sensitivity is purely a receiver specification and is independent of the transmitter. As the wave propagates away from the transmitter, it attenuates as the distance increases. Lowering the sensitivity on the receiver (making it more negative) will allow the radio to detect weaker signals, and thus increase the transmissi

Resumen del contenido incluido en la página 12

Application Notes (cont.) Detectable Range Received Detectable by by (meters) Power MDR210A-485 Commercial Radio 100 -68.526 dBm YES YES 500 -82.506 dBm YES YES 1000 -88.526 dBm YES YES 3000 -92.048 dBm YES NO 5000 -102.506 dBm YES NO 8000 -106.588 dBm YES NO 10000 -108.526 dBm YES NO 11265 (7miles) -109.559 dBm YES NO 12000 -110.805 dBm NO NO Since the range doubles every 6dB, the 20dB sensitivity difference in radios corresponds to 2^(20/6) = 10.08 times th

Resumen del contenido incluido en la página 13

Appendix A – Specifications General Frequency Range 902 to 928 MHz, unlicensed ISM Band Frequency Hopping Spread Spectrum Type Transceiver Frequency Control Direct FM Transport Protocol Transparent Networking Hops through 25 channels. Up to 65,000 Channel Capacity NetIDs. Serial Data Interface Asynchronous RS-232 levels Serial Interface Baud Rate ????? Data Throughput ????? Performance 10k or 20k bps Respectively (vary with data Channel Data Rate rate) Transmit Pow

Resumen del contenido incluido en la página 14

FCC Compliance Warning: Warning: This device complies with part 15 of the FCC Rules. Operation is subject to the following 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. 14


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