Contents

Revision and Copyright Information
Limited Warranty
Assistance
Safety
Table of Contents
1. Introduction
2. Precautions
3. Initial Inspection
4. QuickStart
- 4.1 Remote Station Radio
- 4.2 Base Station Radio
- 4.3 LoggerNet Setup
5. Overview
- 5.1 Retired Radios
  - 5.1.1 RF401-Series and RF430-Series Radios
  - 5.1.2 RF400-Series Radios
6. Specifications
7. Product Description
- 7.1 Mounting
- 7.2 Power
- 7.3 USB
- 7.4 CS I/O
- 7.5 RS-232
- 7.6 LEDs
- 7.7 Antenna
  - 7.7.1 Compatible Antennas
  - 7.7.2 Electrostatic Issues and Surge Protection
  - 7.7.3 Antenna Cables
8. Configuring the RF401A Series
- 8.1 Device Configuration Utility
9. LoggerNet Setup
- 9.1 Basic Setup
- 9.2 Using a Repeater
10. Installation Best Practices
- 10.1 Avoiding Interference
- 10.2 Antenna Selection, Placement, and Mounting
- 10.3 Antenna Cables
11. Operation
- 11.1 Main
  - 11.1.1 Active Interface
  - 11.1.2 SDC Address
  - 11.1.3 RS-232 Baud Rate
  - 11.1.4 Protocol
  - 11.1.5 RF Hop Sequence
  - 11.1.6 RF Network
  - 11.1.7 RF Radio Address
  - 11.1.8 Power Mode
  - 11.1.9 Retry Level
  - 11.1.10 Radio TX Power Level
- 11.2 PakBus
  - 11.2.1 PakBus Address
  - 11.2.2 PakBus Beacon Interval
  - 11.2.3 PakBus Verify Interval
  - 11.2.4 Central Router
  - 11.2.5 Neighbors Allowed
- 11.3 Advanced
  - 11.3.1 Serial Number
  - 11.3.2 Operating System Version
  - 11.3.3 Radio Firmware Version
  - 11.3.4 Received Signal Strength
  - 11.3.5 Retransmit Failures
  - 11.3.6 ME Baud Rate
  - 11.3.7 RS-232 Parity
  - 11.3.8 RS-232 Stop Bits
  - 11.3.9 RS-232 Character Length
  - 11.3.10 RS-232 Auto Power Down
  - 11.3.11 AT Sequence Character
  - 11.3.12 Silence Time Before Command Sequence
  - 11.3.13 Silence Time After Command Sequence
  - 11.3.14 AT Command Mode Timeout
  - 11.3.15 Net Address Mask
  - 11.3.16 Radio Address Mask
12. Attributions
Appendix A. Part 15 FCC Compliance Warning
Appendix B. Distance vs. Antenna Gain, Terrain, and Other Factors
- B.1 Introduction
- B.2 How Far Can You Go?
  - B.2.1 Overview
  - B.2.2 Link Budget
  - B.2.3 Transmitter Power
  - B.2.4 Cable Loss
  - B.2.5 Antenna Gain
  - B.2.6 Receiver Sensitivity
  - B.2.7 Path Loss
- B.3 Real World Distance Estimates
- B.4 Examples
Campbell Scientific Companies

Campbell Scientific RF401A-Series Instruction Manual

Campbell Scientific RF401A-Series Radio manual cover

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Campbell Scientific RF401A-Series Radio Specification

The Campbell Scientific RF401A-Series Radio is a sophisticated communication device designed for reliable data transmission in remote monitoring and control applications. This RF401A-Series operates within the license-free 900 MHz frequency band, which ensures wide compatibility and legal usage across various regions. The radio employs Frequency Hopping Spread Spectrum (FHSS) technology, enhancing its resistance to interference and improving data security, making it ideal for deployment in environments with potential radio interference.

The RF401A-Series supports both point-to-point and point-to-multipoint communication configurations, enabling versatile network topologies that can accommodate diverse project requirements. The device boasts a robust transmission range, supporting distances up to 15 miles under optimal line-of-sight conditions, which can be further extended using additional repeaters or higher gain antennas. Its data transfer rate of up to 115.2 kbps facilitates efficient data handling, ensuring the rapid relay of critical information.

Designed with ease of integration in mind, the RF401A-Series is compatible with Campbell Scientific data loggers and peripherals, facilitating seamless system integration. The radio is equipped with RS-232 and CS I/O interfaces, allowing straightforward connectivity with existing setups. The device's low power consumption feature makes it suitable for solar-powered installations, reducing operational costs and enhancing sustainability.

Enhanced by a durable, weather-resistant housing, the RF401A-Series is built to withstand challenging environmental conditions, ensuring reliable performance over extended periods. The radio also offers flexible mounting options, further simplifying its deployment in diverse field settings. With its combination of advanced technology, flexibility, and durability, the Campbell Scientific RF401A-Series Radio is a suitable solution for a wide range of telemetry applications, particularly in remote and challenging environments.

Campbell Scientific RF401A-Series Radio F.A.Q.

How do I set up the RF401A-Series Radio for the first time?

To set up the RF401A-Series Radio, begin by connecting the radio to your computer using a compatible cable. Open the Device Configuration Utility provided by Campbell Scientific, select the RF401A from the list of devices, and follow the setup wizard to configure the radio's network ID, frequency, and other communication settings.

What is the range of the RF401A-Series Radio, and how can I maximize it?

The RF401A-Series Radio has a typical range of up to 10 kilometers line-of-sight. To maximize range, ensure that antennas are properly aligned, unobstructed, and elevated above ground level. Using higher-gain antennas and ensuring clear line-of-sight between radios can also enhance range.

How can I troubleshoot communication issues with the RF401A-Series Radio?

Check the power supply connections and ensure the radio is properly powered. Verify the antenna connections and alignment. Use the Device Configuration Utility to check that both radios are on the same network ID and frequency. Inspect for any nearby sources of interference that may affect communication.

How do I update the firmware on an RF401A-Series Radio?

To update the firmware on the RF401A-Series Radio, connect the radio to your computer, launch the Device Configuration Utility, and select your device. Follow the prompts to check for available firmware updates and apply them as instructed. Ensure a stable connection during the update process.

What maintenance is required for the RF401A-Series Radio to ensure optimal performance?

Regularly inspect and clean the radio's exterior to prevent dust and debris buildup. Check all cable connections for wear or corrosion. Periodically verify that firmware is up-to-date and review configuration settings to ensure they meet current operational requirements.

Can the RF401A-Series Radios be used in harsh environmental conditions?

Yes, the RF401A-Series Radios are designed to operate in a wide range of environmental conditions. However, ensure that the radios are housed in appropriate enclosures to protect against moisture, dust, and temperature extremes.

How do I configure a network with multiple RF401A-Series Radios?

To configure a network with multiple RF401A-Series Radios, assign a unique network ID to each radio within the same network, and ensure they are operating on the same frequency. Use the Device Configuration Utility to set these parameters and verify connectivity between all radios.

What are the power requirements for the RF401A-Series Radio?

The RF401A-Series Radio typically operates on a 12 V DC power supply. It is important to ensure that the power source is stable and capable of delivering the required current to avoid disruptions in radio operation.

How can I test the signal strength of my RF401A-Series Radio?

Utilize the Device Configuration Utility to access the RF401A's diagnostics tools, which include signal strength indicators. Conduct tests at various distances and conditions to evaluate and ensure optimal signal strength for your application.

What frequency bands are supported by the RF401A-Series Radio?

The RF401A-Series Radio supports frequency bands in the range of 902 to 928 MHz, which is compliant with ISM band regulations in North America. Ensure that your application's frequency settings comply with local regulations.