Black Box MDR210A-485 User Manual Download Page 4

 

4

Features 

 

res 
 

                                           General Purpose 

900 MHz. Spread Spectrum Frequency Hopping Transceiv 

 

 
 

 

 

 
 
 
 
 
 
 
 
 
 

 
 
 

General 

                                          MDR210A-485 

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 network identifiers. 

Serial Data Interface 

Asynchronous RS232 levels.  CMOS (TTL) Signals, 5V, 3.3V Tolerant 

Serial Interface Baud 
Rate 

Configurable from 2400-57600 bps 

Data Throughput 

9600 bps 

Network Topology  

Point – multipoint, point-to-point multi-drop transparent networking 

 

Performance 

 

Channel Data Rate 

10k or 20k bps respectively (vary with data rate) 

Transmit Power Output 

100mW 

Rx Sensitivity 

-110dBm or –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 9600 baud line of sight.   Actual range will vary based upon specific antenna selection and 

environment 

 

 
 
 

• 

RS485 Master/Slave auto-sensing radio interface. 

• 

Built in 900MHz frequency hopping radio for long-range 
wireless interface. 

• 

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 devices to wireless. 

• 

Range Indoor: 600’ to 1300’ 

• 

Range Outdoor: 7mi. with dipole, >20 mi. w/high gain antenna. 

• 

LED power and activity indicator. 

• 

Configuration parameters set by dipswitch. 

• 

Low power, 6-24 VDC at 200 milliamp transmitting, 70 milliamp 
receiving. 

• 

Astron AXH900RP SMA R Reverse Polarity SMA 6.5” 
Antenna. 

 

Summary of Contents for MDR210A-485

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: ...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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

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