Contents

Revision and Copyright Information
Warranty and Assistance
Table of Contents
TX312 Transmitter
- 1. Introduction
- 2. GOES System
  - 2.1 Orbit
  - 2.2 NESDIS and Transmit(Windows
  - 2.3 Data Retrieval
- 3. TX312 Functions
  - 3.1 LED Function
  - 3.2 Diagnostics Switch
  - 3.3 Communication Ports
    - 3.3.1 RS-232 Port
    - 3.3.2 CS I/O Port
    - 3.3.3 SDI-12 Serial Port
  - 3.4 RF Connectors
    - 3.4.1 RF Transmission Connector
    - 3.4.2 GPS Connector
  - 3.5 Power Connector
- 4. SatCommand Software
  - 4.1 Install SatCommand
  - 4.2 SatCommand General Description
  - 4.3 Making Edits
    - 4.3.1 NESDIS ID
    - 4.3.2 Timed Channel
    - 4.3.3 Timed Bit Rate
    - 4.3.4 Timed Interval
    - 4.3.5 First Timed Transmission
    - 4.3.6 Timed Tx Window
    - 4.3.7 Timed Msg Format
    - 4.3.8 Random Channel
    - 4.3.9 Random Bit Rate
    - 4.3.10 Random Randomizing Interval
    - 4.3.11 Random Randomizing Percentage
    - 4.3.12 Random Repeat Count
    - 4.3.13 Random Data Format
    - 4.3.14 Random Msg Counter
  - 4.4 Save and Transfer the Settings to the TX312
  - 4.5 Using SatCommand for TX312 Testing
    - 4.5.1 Terminal Window
    - 4.5.2 Commands
      - 4.5.2.1 Recall Configuration Settings
      - 4.5.2.2 Position
      - 4.5.2.3 Version
      - 4.5.2.4 GPS Status
      - 4.5.2.5 Read Audit Log
      - 4.5.2.6 Enable Transmitter
      - 4.5.2.7 Disable Transmitter
      - 4.5.2.8 Max Timed Message Length
      - 4.5.2.9 Max Random Message Length
      - 4.5.2.10 Clear Timed Buffer
      - 4.5.2.11 Clear Random Buffer
      - 4.5.2.12 Send to Timed Buffer
      - 4.5.2.13 Send to Random Buffer
      - 4.5.2.14 SDI-12 Configuration
      - 4.5.2.15 Show Defaults
- 5. Programming the Datalogger
  - 5.1 CRBasic Programming
    - 5.1.1 GoesData
      - 5.1.1.1 Result Code
      - 5.1.1.2 Data Table
      - 5.1.1.3 Table Option
      - 5.1.1.4 Buffer Control
      - 5.1.1.5 Data Format
      - 5.1.1.6 GOESData() Example
    - 5.1.2 GoesStatus
      - 5.1.2.1 GoesStatus Read Time
      - 5.1.2.2 GoesStatus Read Status
      - 5.1.2.3 GoesStatus Read Last Message Status
      - 5.1.2.4 GoesStatus Read Error Register
    - 5.1.3 GoesGPS
    - 5.1.4 GoesSetup
      - 5.1.4.1 Result Code
      - 5.1.4.2 Platform ID
      - 5.1.4.3 Window
      - 5.1.4.4 Timed Channel
      - 5.1.4.5 Timed Baud Rate
      - 5.1.4.6 Random Channel
      - 5.1.4.7 Random Baud Rate
      - 5.1.4.8 Timed Interval
      - 5.1.4.9 Timed Offset
      - 5.1.4.10 Random Offset
      - 5.1.4.11 GOESSetup Example
  - 5.2 Edlog Programming
    - 5.2.1 Deciding How Much Data will be Transmitted and When
    - 5.2.2 Deciding What Data Format to Use
    - 5.2.3 Managing Data, Writing More Data than Will Be Transmitted
    - 5.2.4 Sending Data to the Transmitter (P126)
      - 5.2.4.1 Buffer Control
      - 5.2.4.2 Data Format
      - 5.2.4.3 P126 Result Codes
    - 5.2.5 Read Status and Diagnostic Information from the TX312
      - 5.2.5.1 P127, Command 0: Read Time
      - 5.2.5.2 P127, Command 1: Read Status
      - 5.2.5.3 P127, Command 2: Read Last Message Status
      - 5.2.5.4 P127, Command 3: Transmit Random Message
      - 5.2.5.5 P127, Command 4: Read TX312 Error Registers
      - 5.2.5.6 P127, Command 5: Clear TX312 Error Registers
      - 5.2.5.7 P127, Command 6: Return TX312 to on-line mode.
    - 5.2.6 Edlog Programming Examples
- 6. Field Installation
  - 6.1 Field Site Requirements
  - 6.2 Transmission Antenna
  - 6.3 GPS Antenna
    - 6.3.1 How the GPS Signal is Acquired and Used
    - 6.3.2 GPS Antenna Location
Appendix A. Information on Eligibility and Getting Onto the GOES System
- A.1 Eligibility
- A.2 Acquiring Permission
Appendix B. Data Conversion Computer Program
Appendix C. Antenna Orientation Computer Program
Appendix D. RAWS-7 Data Format
- D.1 Introduction
- D.2 Format
- D.3 Programming the Datalogger for RAWS-7 Format
- D.4 RAWS-7 Sample Data
- D.5 Writing Additional Data Values Beyond the RAWS-7
Appendix E. GOES DCS Transmit Frequencies
Appendix F. High Resolution 18-Bit Binary Format
Appendix G. Extended ASCII Command Set
- G.1 Command Interface
  - G.1.1 RS-232 Serial Port Interface
    - G.1.1.1 RS232 Hardware Interface
    - G.1.1.2 Command Protocol
    - G.1.1.3 Command Access Level
- G.2 General Configuration Commands
  - G.2.1 Clock Read/Set
  - G.2.2 Replacement Character Read/Set
  - G.2.3 Save Configuration
  - G.2.4 Restore Configuration
  - G.2.5 Restore Default Configuration
  - G.2.6 Enable Transmissions
  - G.2.7 Disable Transmissions
  - G.2.8 Read Configuration
  - G.2.9 Enable Technician Command Mode
  - G.2.10 Enable User Command Mode
  - G.2.11 Set GPS Fix Interval
- G.3 GOES Transmission Configuration commands
  - G.3.1 Set GOES DCP Platform ID
  - G.3.2 Set Self-Timed Transmission Channel Number
  - G.3.3 Set Self-Timed Transmission Bit Rate
  - G.3.4 Set Self-Timed Transmission Interval
  - G.3.5 Set Self-Timed transmission First Transmission Time
  - G.3.6 Set Self-Timed Transmission Transmit Window Length
  - G.3.7 Enable or Disable Self-Timed Transmission Message Cen
  - G.3.8 Enable or Disable Self-Timed Buffer Empty Message
  - G.3.9 Set Self-timed Transmission Preamble Length
  - G.3.10 Set Self-Timed Transmission Interleaver Mode
  - G.3.11 Set Self-Timed Transmission Data Format
  - G.3.12 Set Random Transmission Channel Number
  - G.3.13 Set Random Transmission Bit rate
  - G.3.14 Set Random Transmission Interval
  - G.3.15 Set Random Transmission Randomizing Percentage
  - G.3.16 Set Random Transmission Repeat Count
  - G.3.17 Enable or Disable Random Transmission Message Counte
- G.4 SDI-12 Configuration Commands
  - G.4.1 Select CS I/O Port Mode
  - G.4.2 Enter SDI-12 Transparent Mode
  - G.4.3 Add SDI-12 Measurement Commands to the SDI-12 Command
  - G.4.4 Clear SDI-12 Commands
  - G.4.5 Print SDI-12 Commands
  - G.4.6 Set SDI-12 Transmit Format
  - G.4.7 Set SDI Sample Interval
  - G.4.8 Set SDI Sample Interval Offset
  - G.4.9 Test SDI-12 Command Table
- G.5 Data Buffer Loading Commands
  - G.5.1 Load Self-Timed Transmission Buffer
  - G.5.2 Read Number of Bytes in the Self-Timed Transmission B
  - G.5.3 Read the Maximum Self-Timed Message Length
  - G.5.4 Clear Self-Timed Transmission Buffer
  - G.5.5 Load Random Transmission Buffer
  - G.5.6 Read Length of the Message in the Random Transmission
  - G.5.7 Read the Maximum Random Message Length
  - G.5.8 Clear Random Transmission Buffer
- G.6 Status and Other Commands
  - G.6.1 Read Version Information
  - G.6.2 Read Transmission Status
  - G.6.3 Read Last Transmission Status
  - G.6.4 Read GPS Status
  - G.6.5 Read GPS Position
  - G.6.6 Read Audit Log
  - G.6.8 Read Forward Power
  - G.6.9 Read Reflected Power
  - G.6.10 Read Power Supply
  - G.6.11 Read TCXO Temperature
  - G.6.12 Read Measured Frequency
Appendix H. GOES/Radio Set Certification
Campbell Scientific Contact Information

Campbell Scientific TX312 Instruction Manual

Campbell Scientific TX312 Transmitter manual cover

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Campbell Scientific TX312 Transmitter Specification

The Campbell Scientific TX312 Transmitter is a versatile and reliable data communication device designed for remote environmental monitoring applications. Operating in the VHF and UHF frequency bands, it facilitates the transmission of data over significant distances, making it ideal for sites without ready access to direct communication lines. The transmitter boasts a robust power output range of 2 to 25 watts, ensuring flexibility in various field conditions and allowing users to achieve the desired balance between transmission range and power consumption.

The TX312 is engineered to be compatible with various data loggers and sensors, offering seamless integration into existing systems. It supports multiple modulation schemes, including narrowband frequency modulation, which enhances data integrity and transmission reliability. The device is equipped with advanced error-checking protocols to minimize data loss during transmission, thereby ensuring that critical environmental data is accurately relayed to central monitoring stations.

Constructed with durability in mind, the TX312 is housed in a weather-resistant enclosure, making it suitable for harsh outdoor environments. Its design allows for straightforward installation and maintenance, with user-friendly interfaces that simplify configuration and operation. The transmitter's low power consumption is complemented by a variety of power supply options, including solar panels and rechargeable batteries, providing adaptable power management solutions for remote locations.

Additionally, the TX312 features diagnostic capabilities that facilitate remote monitoring and troubleshooting, enhancing operational efficiency by reducing the need for on-site visits. Overall, the Campbell Scientific TX312 Transmitter is a robust and efficient solution for long-distance data communication, supporting a wide range of environmental monitoring applications with reliability and precision.

Campbell Scientific TX312 Transmitter F.A.Q.

What is the primary function of the Campbell Scientific TX312 Transmitter?

The TX312 Transmitter is designed for satellite telemetry applications, providing reliable data transmission from remote locations.

How can I troubleshoot a TX312 that is not transmitting data?

First, check the power supply to ensure the unit is receiving adequate power. Verify that all connections are secure and inspect cables for damage. Lastly, review the configuration settings to ensure proper setup.

What maintenance activities are recommended for the TX312?

Regularly inspect the antenna and cables for physical damage, clean the housing to prevent dust accumulation, and test the unit periodically to ensure it is functioning correctly.

Can the TX312 be used in extreme weather conditions?

Yes, the TX312 is built to withstand harsh environmental conditions, including extreme temperatures and humidity, making it suitable for a wide range of climates.

What are the power requirements for the TX312?

The TX312 typically requires a DC power supply ranging from 10.5 to 15.5 volts, with a power consumption that varies depending on the operating mode.

How do I configure the TX312 for optimal performance?

Configuration can be done using a computer interface to set transmission schedules, frequencies, and ensure compliance with satellite communication protocols. Consult the user manual for detailed instructions.

What should I do if the TX312's signal strength is weak?

Check the antenna orientation and location to ensure it is unobstructed. Consider upgrading to a higher gain antenna if necessary, and verify the satellite alignment settings.

Is it possible to remotely monitor the status of the TX312?

Yes, the TX312 supports remote monitoring via satellite, allowing users to check status and diagnostics from a distant location using compatible software.

What types of data can the TX312 transmit?

The TX312 can transmit various data types, including environmental data, meteorological measurements, and other sensor outputs compatible with its input specifications.

How do I perform a firmware update on the TX312?

Connect the TX312 to a computer using the appropriate interface cable, then use the firmware update tool provided by Campbell Scientific to upload the new firmware version. Follow the instructions carefully to avoid errors.