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RF401-series and RF430-series Spread Spectrum Radio/Modems

3. Installation

3.1 Site Considerations

Location of a radio near commercial transmitters, such as at certain

mountaintop sites, is not recommended due to possible “de-sensing” problems

for the radio. A powerful signal of almost any frequency at close range can

simply overwhelm a receiver. Lower power and intermittent repeater sites may

not be a problem. Test such a site with a representative setup before

committing to it (see Troubleshooting Section 6). Keep in mind that

commercial sites tend to evolve. Such a site may work now but could change

in the future with the addition of new equipment.

3.2 Quick Start (Point-to-Point or PakBus)

This section is intended to serve as a “primer” enabling you to quickly build a

simple system and see how it operates. This section describes in four steps

how to set up a pair of radios in a direct connect, point-to-point or PakBus

network. We recommend that you do this before undertaking field installation.

For additional help on point-to-point networks and for help on creating point-

to-multipoint networks, refer to Software Section 5 and Appendix F.

For this system you will need the following hardware or the equivalent:

1. Two radios (either two RF401s or an RF430 and an RF401)

2. Two antennas

3. AC adapter (Item # 15966)

4. RS-232 serial cable or USB cable

5. SC12 cable (included with RF401)

6. Datalogger (e.g., CR800, CR1000, CR3000)

7. Field Power Cable (Item # 14291) if datalogger or wiring panel doesn’t

have 12 V on pin 8 of CS I/O port

You will also need:

1. An IBM

compatible PC with one available COM port or USB port

2. LoggerNet installed

3.2.1 Step 1 – Set Up Base RF401 or RF430

a. Connect an antenna (or antenna cable with Yagi or omnidirectional

antenna attached) to the radio’s antenna jack. The main objective is to

provide an antenna. If you should transmit without an antenna attached,

there will be no equipment damage as the transmitter is protected against

load mismatch. The separation between the base radio antenna and the

remote radio antenna can be any convenient distance. (See Sections 3.3

and 4.4 for antenna considerations and options.)

b. If using an RF430, go to step c. If using an RF401, use the RS-232 serial

cable to connect the RF401’s RS-232 port to the PC’s RS-232 port. Then

go to step d.

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Campbell RF400 Handbuch Seite 18