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Black Box MDR210A-485 manual

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Table of contents for the manual

  • Page 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[...]

  • Page 2

    2 Table of Contents Description………………………………………………………………3 Features………………………………………………………………….4 Serial Port Scanning…………………………………………………5 Application Fields…………………………………………………….5[...]

  • Page 3

    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 ca[...]

  • Page 4

    4 Features res General Purpose 900 MHz. Spread Spectrum Frequency Hopping Transceiv General MDR210A - 485 Frequency Range 902 to 928 MHz., unlicensed IS M Band Type Frequency Hopping Spread Spectrum Transceiver Frequency Control Direct FM Transport Protocol Transparent networking Channel Capacity Hops through 25 channels. Up to 65,000 network ident[...]

  • Page 5

    5 9XSTREAM - 192/96 Radio Introduction The 9XSTREAM - 192/96 radio is a 100 - milliwatt frequ ency 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 [...]

  • Page 6

    6 9XStream Frequency Hopping Data Radio FCC Complia nce 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 dig ital device, pursuant to part 15 of the F[...]

  • Page 7

    7 Ante nna 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 S can Function is provided to assist the user when they are unsure which communication [...]

  • Page 8

    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 - defina ble using the MDR210A - 485 Set - up Hop Table. Module Address Module Addresses provide another level [...]

  • Page 9

    9 Figure 2a – Generation of Data Packets Data Validity (Cont.) 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 CRC on all incoming data. Any received data that has a n invalid CRC is discarded[...]

  • Page 10

    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 empl oyed by the MDR210[...]

  • Page 11

    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 o f the transmitter. As the wave propagates away from the transmitter, it attenuates as the distance increases. Lowering the s[...]

  • Page 12

    12 Application Notes (cont.) Range Receive d Detectable by Detectable 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[...]

  • Page 13

    13 Appe ndix A – Specifications General Frequency Range 902 to 928 MHz, unlicensed ISM Band Type Frequency Hopping Spread Spectrum Transceiver Frequency Control Direct FM Transport Protocol Transparent Networking Channel Capacity Hops through 25 channels. Up to 65,000 NetIDs. Serial Data Interface Asynchronous RS - 232 levels Serial Interface Bau[...]

  • Page 14

    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 interferen ce received, including interference that may cause undesired operation.[...]