Ritron DISPLAY Series Manuel Page 1

RF320-Series Ritron VHF/UHF Radios10/12 Copyright © 2012Campbell Scientific, Inc.

RF320-Series Ritron VHF/UHF Radios  The installation manual should provide specific information of how to install the antennas to facilitate recomme

RF320-Series Ritron VHF/UHF Radios 4. Overview FIGURE 4-1. RF320-Series Radio As offered by Campbell Scientific, RF320-series radios comprise a sin

RF320-Series Ritron VHF/UHF Radios 5. Specifications RF320 RF321/322/323 GENERAL Ritron Module: DTX-145 DTX-445 FCC ID: AIERIT17-145 AIERIT17-445

RF320-Series Ritron VHF/UHF Radios RF320 RF321/322/323 411 to 429 MHz Band: Rx Tx 417.60000 417.58750 418.03750 417.59375 418.04375 417.60625 418.05

RF320-Series Ritron VHF/UHF Radios RF320 RF321/322/323 RSSI squelch sensitivity: PC adjustable; factory set for -106 dBm Noise squelch sensitivity: P

RF320-Series Ritron VHF/UHF Radios 6.2 Interconnect FIGURE 6-1 illustrates the interconnection of an RF320-series radio in a typical installation. Th

RF320-Series Ritron VHF/UHF Radios FIGURE 6-2. Radio-to-modem interface cable wiring diagram 6.2.1 System Power Supply The RF320 radio should be co

RF320-Series Ritron VHF/UHF Radios 6.2.2 Antenna The antenna and all interconnecting cables, connectors, and adapters are critical elements of an RF

RF320-Series Ritron VHF/UHF Radios radiated in the same direction by an isotropic antenna is defined as the antenna gain and is expressed in dBi. An i

RF320-Series Ritron VHF/UHF Radios o Connectors - All exposed RF connectors should be weatherproofed. A good method is to apply overlapping wraps of

RF320-Series Ritron VHF/UHF Radios independent transmit and receive frequencies. Channel selection is accomplished by means of pins-1, 2 and 3 on the

RF320-Series Ritron VHF/UHF Radios 7.1.1 Link Budget Simply stated, the link budget is the difference, in dB, between the RF signal level arriving at

RF320-Series Ritron VHF/UHF Radios the received signal strength. There exists an area about the centerline of an EM-wave propagation path that must be

RF320-Series Ritron VHF/UHF Radios 8.1.1.1 Digital Multimeter (DMM) For verifying supply voltages, current drain, and the continuity of cables and in

RF320-Series Ritron VHF/UHF Radios 8.1.1.4 Hand-Held RF Channel Scanner A scanner can be used to detect the RF emissions of the radio and display the

RF320-Series Ritron VHF/UHF Radios TABLE 8-2. Radio Troubleshooting Guide Indication Probable Cause Corrective Action Radio LED blinking red in rece

RF320-Series Ritron VHF/UHF Radios For a number of the following procedures, it will be necessary to manually key the radio’s transmitter. Campbell Sc

RF320-Series Ritron VHF/UHF Radios connect the input of an RF wattmeter to the radio’s antenna connector. Connect the output of the RF wattmeter to an

RF320-Series Ritron VHF/UHF Radios 22

Appendix A. Glossary Antenna: That part of a radio communications system intended to radiate and/or collect radio frequency energy. Antenna Gain: A

Warranty “PRODUCTS MANUFACTURED BY CAMPBELL SCIENTIFIC, INC. are warranted by Campbell Scientific, Inc. (“Campbell”) to be free from defects in materi

Appendix A. Glossary Dipole Antenna: The most common wire antenna. Length is equal to one-half of the wavelength for the frequency of operation. Fed

Appendix A. Glossary Insertion Loss: The loss in signal strength due to the insertion of a device in series with a signal path. Typically measured ov

Appendix A. Glossary Propagation: The travel of a signal through a medium such as air or free space. Radio Frequency (RF): Typically a frequency from

Appendix A. Glossary caused by the interference of incident and reflective waves traversing the transmission line. Therefore, SWR can be calculated f

Appendix A. Glossary A-6

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Table of Contents PDF viewers: These page numbers refer to the printed version of this document. Use the PDF reader bookmarks tab for links to spec

Table of Contents ii 8.3 Radio Functional Checks... 19 8.3.1 Input Voltage Checks ..

RF320-Series Ritron VHF/UHF Radios 1. Introduction This manual provides instructions for the installation and operation of RF320-series radios withi

RF320-Series Ritron VHF/UHF Radios It uses radio frequency (RF) energy or radio waves to send and receive data. RF energy is one form of electromagnet

RF320-Series Ritron VHF/UHF Radios • Institute of Electrical and Electronic Engineers (IEEE) C95. 1-1999 Edition. Copyright Telecommunications Indust