Contents

Revision and Copyright Information
Limited Warranty
Assistance
Safety
Table of Contents
1. Introduction
2. Precautions
3. Initial Inspection
- 3.1 Ships With List
4. QuickStart
- 4.1 Step 1 Configure the TX321
  - 4.1.1 Accessing DevConfig
  - 4.1.2 Settings Editor | Configuration
  - 4.1.3 Settings Editor | GPS
- 4.2 Step 2 Program the Data Logger
- 4.3 Step 3 Install the Data Collection Platform (DCP)
5. Overview
- 5.1 GOES System
  - 5.1.1 Orbit
  - 5.1.2 NESDIS and Transmit(Windows
  - 5.1.3 Data Retrieval
6. Specifications
7. Installation
- 7.1 Field Site Requirements
- 7.2 TX321 Functions
  - 7.2.1 LED Function
  - 7.2.2 Communication Ports
    - 7.2.2.1 CS I/O Port
    - 7.2.2.2 RS-232 Port
    - 7.2.2.3 USB Port
  - 7.2.3 RF Connectors
    - 7.2.3.1 RF Transmission Connector
    - 7.2.3.2 GPS Connector
  - 7.2.4 Power Connector
- 7.3 Transmission Antenna
- 7.4 GPS Antenna
  - 7.4.1 How the GPS Signal is Acquired and Used
  - 7.4.2 GPS Antenna Location
- 7.5 CRBasic Programming
  - 7.5.1 GOESData()
    - 7.5.1.1 Result Code
    - 7.5.1.2 Data Table
    - 7.5.1.3 Table Option
    - 7.5.1.4 Buffer Control
    - 7.5.1.5 Data Format
    - 7.5.1.6 GOESData() CR1000X Example
  - 7.5.2 GOESStatus()
    - 7.5.2.1 GOESStatus Read Time
    - 7.5.2.2 GOESStatus Read Status
    - 7.5.2.3 GOESStatus Read Last Message Status
  - 7.5.3 GOESGPS
  - 7.5.4 GOESSetup
    - 7.5.4.1 Result Code
    - 7.5.4.2 Platform ID
    - 7.5.4.3 Window
    - 7.5.4.4 Timed Channel
    - 7.5.4.5 Timed Baud Rate
    - 7.5.4.6 Random Channel
    - 7.5.4.7 Random Baud Rate
    - 7.5.4.8 Timed Interval
    - 7.5.4.9 Timed Offset
    - 7.5.4.10 Random Interval
    - 7.5.4.11 GOESSetup() Example
8. Troubleshooting/Diagnostics
- 8.1 Fail-safe Conditions
- 8.2 Fault Button
- 8.3 Result Codes
- 8.4 Using DevConfig for Troubleshooting/Testing
  - 8.4.1 Settings Editor | GPS
  - 8.4.2 Settings Editor | Status
  - 8.4.3 Terminal
Appendix A. Information on Eligibility and Getting Onto the GOES System
- A.1 Eligibility
- A.2 Acquiring Permission
Appendix B. GOES DCS Transmit Frequencies
Appendix C. GOES Data Formats
- C.1 Data Formats
- C.2 ASCII
  - C.2.1 7-Byte Floating Point ASCII
  - C.2.2 Fixed Decimal ASCII
  - C.2.3 RAWS7, 7 Data Point ASCII
- C.3 Pseudo Binary
  - C.3.1 FP2, 16-bit Floating Point Number
  - C.3.2 18-bit Integer
  - C.3.3 Additional Pseudo Binary Representations
Appendix D. Extended ASCII Command Set
- D.1 Command Interface
  - D.1.1 Port Interfaces
    - D.1.1.1 RS-232 Details
    - D.1.1.2 Command Protocol
    - D.1.1.3 Command Access Level
- D.2 General Configuration Commands
  - D.2.1 Clock Read/Set
  - D.2.2 Replacement Character Read/Set
  - D.2.3 Save Configuration
  - D.2.4 Restore Configuration
  - D.2.5 Restore Default Configuration
  - D.2.6 Enable Transmissions
  - D.2.7 Disable Transmissions
  - D.2.8 Read Configuration
  - D.2.9 Enable Technician Command Mode
  - D.2.10 Enable User Command Mode
  - D.2.11 Set GPS Fix Interval
- D.3 GOES Transmission Configuration Commands
  - D.3.1 Set GOES DCP Platform ID
  - D.3.2 Set Self-Timed Transmission Channel Number
  - D.3.3 Set Self-Timed Transmission Bit Rate
  - D.3.4 Set Self-Timed Transmission Interval
  - D.3.5 Set Self-Timed Transmission First Transmission Time
  - D.3.6 Set Self-Timed Transmission Transmit Window Length
  - D.3.7 Enable or Disable Self-Timed Transmission Message Centering
  - D.3.8 Enable or Disable Self-Timed Buffer Empty Message
  - D.3.9 Set Self-Timed Transmission Preamble Length
  - D.3.10 Set Self-Timed Transmission Interleaver Mode
  - D.3.11 Set Self-Timed Transmission Data Format
  - D.3.12 Set Random Transmission Channel Number
  - D.3.13 Set Random Transmission Bit Rate
  - D.3.14 Set Random Transmission Interval
  - D.3.15 Set Random Transmission Randomizing Percentage
  - D.3.16 Set Random Transmission Repeat Count
  - D.3.17 Enable or Disable Random Transmission Message Counter
- D.4 Data Buffer Loading Commands
  - D.4.1 Load Self-Timed Transmission Buffer
  - D.4.2 Read Number of Bytes in the Self-Timed Transmission Buffer
  - D.4.3 Read the Maximum Self-Timed Message Length
  - D.4.4 Clear Self-Timed Transmission Buffer
  - D.4.5 Load Random Transmission Buffer
  - D.4.6 Read Length of the Message in the Random Transmission Buffer
  - D.4.7 Read the Maximum Random Message Length
  - D.4.8 Clear Random Transmission Buffer
- D.5 Status and Other Commands
  - D.5.1 Read Version Information
  - D.5.2 Read Transmission Status
  - D.5.3 Read Last Transmission Status
  - D.5.4 Read GPS Status
  - D.5.5 Read GPS Position
  - D.5.6 Read Audit Log
  - D.5.7 Read Forward Power
  - D.5.8 Read Reflected Power
  - D.5.9 Read Power Supply
  - D.5.10 Read TCXO Temperature
  - D.5.11 Read Measured Frequency
Appendix E. Meteosat
- E.1 General Specifications
Appendix F. Compliance Documents and Certificates
Campbell Scientific Companies

Campbell Scientific TX321 Product Manual

Campbell Scientific TX321 Transmitter manual cover

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Campbell Scientific TX321 Transmitter Specification

The Campbell Scientific TX321 Transmitter is an advanced communication device designed to facilitate reliable data transmission in remote monitoring applications. This device operates within the frequency range of 450 to 470 MHz, providing robust and secure communication for environmental and industrial monitoring systems. It supports multiple communication protocols, ensuring seamless integration with various data logging systems. The TX321 is engineered to handle extreme environmental conditions, featuring a rugged, weather-resistant enclosure that guarantees durability in harsh outdoor settings.

Equipped with a high-performance RF transceiver, the TX321 ensures long-range communication with minimal power consumption, making it suitable for solar-powered applications. Its low current draw during transmission and standby modes maximizes operational efficiency, extending battery life and reducing maintenance frequency. The transmitter offers flexible power supply options, supporting both DC and AC power sources, which enhances its adaptability to diverse installation scenarios.

The TX321's configuration is user-friendly, facilitated by a comprehensive software interface that allows for easy parameter adjustments and diagnostics. It includes LED indicators for quick status monitoring and fault detection, streamlining maintenance and troubleshooting processes. The device provides advanced security features, such as encryption and authentication protocols, safeguarding data integrity and preventing unauthorized access.

Versatile in its application, the TX321 is compatible with a wide range of sensors and instruments, making it an ideal choice for telemetry in agriculture, meteorology, hydrology, and other scientific fields. Its compact design and lightweight construction simplify installation, while its robust performance ensures reliable data transmission over extended distances, even in challenging terrains. The Campbell Scientific TX321 Transmitter is a reliable, efficient, and versatile solution for critical data communication needs in remote monitoring systems.

Campbell Scientific TX321 Transmitter F.A.Q.

How do I configure the Campbell Scientific TX321 Transmitter for my specific application?

To configure the TX321 Transmitter, use the Device Configuration Utility software provided by Campbell Scientific. Connect the transmitter to your computer via a USB cable and follow the on-screen prompts to set parameters such as frequency, power output, and data rate.

What steps should I follow to perform a firmware update on the TX321 Transmitter?

First, download the latest firmware from the Campbell Scientific website. Connect the transmitter to your computer and open the Device Configuration Utility. Navigate to the firmware update section, select the downloaded file, and follow the instructions to complete the update.

What are common troubleshooting steps if the TX321 Transmitter is not transmitting data?

Ensure that the power supply is connected and functioning. Check that the antenna is properly attached and not damaged. Verify configuration settings using the Device Configuration Utility and ensure that the transmission frequency matches the receiver settings.

How can I test the TX321 Transmitter's signal strength?

Use a spectrum analyzer to measure the signal strength. Alternatively, the Device Configuration Utility may offer diagnostic tools to evaluate transmission power. Ensure the antenna is placed in an optimal location for accurate results.

What precautions should be taken during the installation of the TX321 Transmitter?

Ensure that the transmitter is mounted in a location free from obstructions and interference. Avoid areas with high electromagnetic interference. Secure all cables to prevent damage and ensure proper grounding to protect against electrical surges.

How often should the TX321 Transmitter be maintained for optimal performance?

Regular maintenance should be performed every 6 to 12 months. This includes checking cable connections, inspecting the antenna for damage, and cleaning the device to prevent dust accumulation.

What should be done if the TX321 Transmitter is overheating?

Ensure that the transmitter is properly ventilated and not exposed to direct sunlight for extended periods. Check for any obstructions blocking airflow and consider using a cooling system if overheating persists.

Can the TX321 Transmitter be used in extreme weather conditions?

Yes, the TX321 is designed to operate in a wide range of environmental conditions. However, ensure that it is housed in a weather-resistant enclosure if exposed to severe weather to prevent damage.

What should I do if the TX321 Transmitter is not responding to configuration changes?

Restart the transmitter and try reconnecting it to the Device Configuration Utility. If the issue persists, perform a factory reset to restore default settings and reconfigure the device.

How can I improve the data transmission range of the TX321 Transmitter?

To enhance the transmission range, ensure the antenna is mounted as high as possible and free from obstructions. Use a higher gain antenna if necessary and ensure the transmitter is operating at its maximum allowable power output.