Black Box MDR210A-485 Скачать руководство пользователя страница 14

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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.

Содержание MDR210A-485

Страница 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...

Страница 2: ...f 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 Compl...

Страница 3: ...address to prevent interference from nearby networks that are not sharing information The default radio network for Rooftop applications is 5 The user may choose another network address 1 7 if desire...

Страница 4: ...107dBm Respectively Range Indoor 600 to 1500 Outdoor 7 mi with dipole over 20 mi with high gain antenna Interface Rejection 70 dB at pager and cellular phone frequencies Range calculations are for 96...

Страница 5: ...a to any near by persons The OEM must also include a statement in the final product manual informing users of the requirement to maintain 20 cm separation from the antenna to any near by persons If th...

Страница 6: ...there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception which can be determined by turnin...

Страница 7: ...Port Specifies which PC communication port the MDR210A 485 to be configured is attached Scan The scan function iterates each available PC communication port looking for an attached MDR210A 485 If an M...

Страница 8: ...detect and listen to the data in order to maintain network synchronization However they will not send the data to their serial ports if their Module Addresses do not match the Module Addresses of the...

Страница 9: ...h data packet before transmission The receiver will then compute the CRC on all incoming data Any received data that has an invalid CRC is discarded Glossary Data Buffer Collects incoming serial data...

Страница 10: ...etworks Provides a layer above Module Addresses for communicating between modules Each network has a unique hopping sequence that allows modules on the same network to remain synchronized together RS...

Страница 11: ...provided Example Compare the MDR210A 485 module with 110dBm sensitivity to a commercial radio receiver with a sensitivity of 90 dBm The Friis transmission formula can be used to calculate received pow...

Страница 12: ...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 t...

Страница 13: ...ection 70 dB at pager and cellular phone frequencies Power Requirements Supply Voltage 5 VDC 0 3V Current Consumption Tx 170 mA nominal Rx 50 mA nominal Physical Properties Board Size 1 6 x 2 7 x 35 4...

Страница 14: ...mplies 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...