Campbell RF500M Spezifikationen

RF500M Radio ModemRevision: 8/10Copyright © 2008-2010Campbell Scientific, Inc.

Section 2. Radiotelemetry Network Components Depending on the radio being used, the appropriate internal jumper must be selected on the RF500M circui

Section 2. Radiotelemetry Network Components FIGURE 2-3. RF500M Radio Jumper Expanded View 2.2.3 Digital Radio Description The RF500M is compatibl

Section 2. Radiotelemetry Network Components An omnidirectional antenna will transmit/ receive in a full 360 degree circle. Generally, an omnidirect

Section 2. Radiotelemetry Network Components FIGURE 2-5. The PD46 Clamp Mount FIGURE 2-6. Type-NM (male), BNC, and Type-NF (female) Connectors TA

Section 2. Radiotelemetry Network Components 2-8 2.4 Tripods, Towers, Enclosures, and Power Supplies There are several methods of mounting and housi

Section 3. Assembling the Radiotelemetry Network This section provides a logical order for RF network assembly and deployment. Details of specific c

Section 3. Assembling the Radiotelemetry Network To configure the RF500M, apply power to the modem, wait for the power-up sequence lights to cycle a

Section 3. Assembling the Radiotelemetry Network 4. Baud Rate – Set the baud rate for the RS-232 interface. 5. Sleep-Mode Enabled – Determine if sl

Section 3. Assembling the Radiotelemetry Network Following is the order in which a general RF field station should be installed. A repeater station

Section 3. Assembling the Radiotelemetry Network Remote” then highlight the RF remote to test. Click “Start Test” and wait for the test results.

Warranty and Assistance The RF500M RADIO MODEM is warranted by Campbell Scientific, Inc. to be free from defects in materials and workmanship under no

Section 3. Assembling the Radiotelemetry Network 3-6

Section 4. Operation of the Radiotelemetry Network All field stations can be accessed and monitored from the central base site. Regular visits to th

Section 4. Operation of the Radiotelemetry Network remotes by using the same method but highlight the RFBase-TD and select RFRemote-PB. The last dev

Section 4. Operation of the Radiotelemetry Network FIGURE 4-2. LoggerNet Setup Screen - Schedule Tab 4.1.4 General Communication – LoggerNet Conne

Section 4. Operation of the Radiotelemetry Network FIGURE 4-3. LoggerNet Connect Screen 4.2 Datalogger Initiated Communications The datalogger can

Section 4. Operation of the Radiotelemetry Network When programming a PakBus datalogger, the SendData instruction must be included in the datalogger

Section 4. Operation of the Radiotelemetry Network 4-6 If the RF remote is storing more data in its buffer than can be sent in the defined time windo

Appendix A. Fundamentals of Radiotelemetry A.1 Radio Waves Radiotelemetry is the process of transferring information (data) in the form of radio wav

Appendix A. Fundamentals of Radiotelemetry filtering efficient, and to isolate the radio waves from the common low frequency man-made noise. The main

Appendix A. Fundamentals of Radiotelemetry sequences, sets data to be transferred into data blocks, creates signatures of data blocks, modulates the

RF500M Table of Contents PDF viewers note: These page numbers refer to the printed version of this document. Use the Adobe Acrobat® bookmarks tab fo

Appendix A. Fundamentals of Radiotelemetry A-4

Appendix B. Power Calculations There must be enough transmission power in any RF link to complete communication. The sources of power are the radio

Appendix B. Power Calculations B-2 Power Conversion Conversion of Watts to dBm can be done with the following formula. dBm = 10 * Log((Watts)/0.001

Glossary Antenna - Device for radiating and receiving radio signals. Attenuation - The reduction of an electrical signal without appreciable distortio

Glossary b Radio Frequency - The number of cycles per second with which the carrier wave travels, usually specified in Megahertz. Radiotelemetry - Pro

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RF500M Table of Contents ii 4. Operation of the Radiotelemetry Network ... 4-1 4.1 Monitoring and Collecting Data with LoggerNet ...

Section 1. General Radiotelemetry Network 1.1 Introduction Data retrieval from a remote site can be difficult. One method to accomplish data collec

Section 1. General Radiotelemetry Network 1-2 1.3 Base Station Purpose: A base station utilizes a computer to collect data from the field station(s

Section 2. Radiotelemetry Network Components 2.1 RF500M Modem The RF500M is an interface between the computer and the radio when used at a base stat

Section 2. Radiotelemetry Network Components The light located between the Transceiver port and the RS-232 port is used primarily to indicate when th

Section 2. Radiotelemetry Network Components The lights can also be used to verify the appropriate power up sequence of the RF500M. View the indicat