Campbell TX326 Product Manual
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Campbell TX326 Product Manual

Satellite transmitter for meteosat
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Revision: 05/2020
Copyright © 2020
Campbell Scientific
CSL I.D - 1346

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Summary of Contents for Campbell TX326

  • Page 1 Revision: 05/2020 Copyright © 2020 Campbell Scientific CSL I.D - 1346...
  • Page 3 Quotations for repairs can be given on request. It is the policy of Campbell Scientific to protect the health of its employees and provide a safe working environment, in support of this policy a “Declaration of Hazardous Material and Decontamination”...
  • Page 5 PLEASE READ FIRST About this manual Please note that this manual was originally produced by Campbell Scientific Inc. primarily for the North American market. Some spellings, weights and measures may reflect this origin. Some useful conversion factors: Area: 1 in...
  • Page 7 • Periodically (at least yearly) check electrical ground connections. WHILE EVERY ATTEMPT IS MADE TO EMBODY THE HIGHEST DEGREE OF SAFETY IN ALL CAMPBELL SCIENTIFIC PRODUCTS, THE CUSTOMER ASSUMES ALL RISK FROM ANY INJURY RESULTING FROM IMPROPER INSTALLATION, USE, OR MAINTENANCE OF TRIPODS, TOWERS, OR ATTACHMENTS TO TRIPODS AND TOWERS...

  • Page 9: Table Of Contents

    A.1.3 ASCII table space, comma separated (GOESTable() format option 3) A.1.4 Line SHEF (Standard Hydrological Exchange Format) (GOESTable() format option 6) A.2 Pseudobinary data formats A.2.1 Campbell Scientific FP2 data A.2.2 Pseudobinary A.2.3 Additional pseudobinary representations Table of Contents - i...

  • Page 11: Introduction

    (RF) amplifiers. The TX326 requires an active GPS antenna with a maximum gain of 25 dB. The TX326 will supply 3.3 V to the active GPS antenna.

  • Page 12: Quickstart

    (DCP). This QuickStart is for the CR6 (≥OS 10), CR300-series (≥OS 10), CR1000X (≥OS 4), and GRANITE-series (≥OS1) data loggers. 1. Connect the data logger RS-232 to the TX326 RS-232 connector and connect the data logger to a power supply. Also ensure the TX326 has power.
  • Page 13 8. Type the Platform ID (in HEX) as assigned by EUMETSAT. 9. Select the Random Transmission Baud Rate as assigned by EUMETSAT. 10. Type the Random Transmission Channel as assigned by EUMETSAT. 11. Select the Self-Time Baud Rate as assigned by EUMETSAT. TX326 Satellite Transmitter for METEOSAT...

  • Page 14: Data Collection Platform (Dcp) Installation

    4.1 Data collection platform (DCP) installation 1. Yagi antenna installation procedure: a. Mount the Yagi antenna to a pole or mast by using the U-bolts included with the antenna mount. b. Attach elements to boom. TX326 Satellite Transmitter for METEOSAT...
  • Page 15 2. GPS antenna installation procedure: a. Connect the GPS cable to the GPS antenna. b. Route the cable through the 0.75-inch IPS threaded pipe and insert the pipe into the GPS antenna. TX326 Satellite Transmitter for METEOSAT...
  • Page 16 Concrete might also be a problem. Heavy foliage, snow, and ice will attenuate the GPS signal. 3. Mount the TX326, the power supply, and the data logger to the backplate of an enclosure. 4. Mount the enclosure and solar panel to the pole or tripod.

  • Page 17: Overview

    (FIGURE 4-2 (p. 7)). 7. Plug the green connector from the power supply to the green receptacle on the TX326. 8. Connect the data logger to the TX326 RS-232 terminal. 9. Route the solar panel cable through the enclosure conduit and connect the red and black wires to the CHG terminals on the CH150 or CH200.

  • Page 18: Meteosat/Eurosat System

    GPS fix. If the TX326 finds itself without an accurate time, it suspends data transmissions until an accurate time is obtained. The GPS time is synched every 11 hours. The data logger clock is synched with the GPS time of the TX326.

  • Page 19: Specifications

    Timed (Scheduled), Random Data formats: ASCII data with restrictions, ASCII data, binary data, pseudo binary (1200 baud only), Meteosat alert message Radio module: OmniSat-3 Temperature range Operating: –40 to 55 °C Storage: –55 to 75 °C TX326 Satellite Transmitter for METEOSAT...
  • Page 20 Channel bandwidth: 1500 Hz (100/1200 bps) GPS receiver type: 3.3 V active Maximum GPS antenna RF gain: 25 dB Timekeeping Initial accuracy: ±100 μs (synchronized to GPS) Drift: ±40 ms/day (without GPS) TX326 Satellite Transmitter for METEOSAT...

  • Page 21: Installation

    The solar panel must have a clear view of the southern sky. Pay special attention to winter sun angles. 7.2 LED function A green Status LED and a red Failsafe LED indicate the state of the TX326 transmitter by using various blink patterns. Table 7-1 (p.

  • Page 22: Ports And Connectors

    The RS-232 port is a DB9 female connector configured as DCE. Only three pins are used, transmit on pin two, receive on pin three, and ground on pin five. Transmit is an output and receive is an input to the TX326. The RS-232 port allows the transmitter to be connected to a data logger RS-232 port.

  • Page 23: Transmission Antenna

    Failure to use a properly matched antenna cable and antenna may cause permanent damage to the radio frequency (RF) amplifiers. The GPS port on the TX326 is an SMA female connector for attaching an active 3.3 V GPS antenna. Operation without a GPS antenna connected will not cause damage, but the transmitter will not transmit without a valid GPS fix.

  • Page 24: Data Logger Programming

    For the Model, enter 3 to use the TX326. For the BufferControl, a value of 0 writes to the self-timed buffer and a value of 1 writes to the random buffer.

  • Page 25: Read-Only Settings

    The CRBasic program reads the TX326 settings using the following format: Variable = Settings.FieldName For example, goes_comport = Settings.GOESComPort reads the Com port setting and stores it in the GOESComPort variable. The TX326 settings are typically read in a SlowSequence section of the program.
  • Page 26 Table 7-3: Read-only TX326 settings FieldName Description Acquisition status of the radio GPS. 0 = valid GPS fix 1 = no GPS position fix, no GPS satellites in view GOESGPSAcquisitionStatus 8 = no GPS position fix, no usable GPS satellites in view...

  • Page 27: Read And Write Settings

    Port used to communicate with the GOES transmitter. Controls whether the data loggers polls the GOESComPort to see if a TX326 radio is attached to it. With the default setting of 0 (not enabled), GOESEnabled the data logger ignores all other GOES settings. A value of 1 enables the setting.

  • Page 28: Troubleshooting

    (p. 9)). Next, check the red Failsafe LED. If the LED is on continuously, the TX326 is in its fail safe mode, which is cleared by pressing the Reset button. The Reset button is located near the LEDs and is accessed through a hole in the side of the...
  • Page 29 FIGURE 8-1. Reset button location The TX326 transmitter will go into the fail safe mode if one of two events occurs: 1. The transmitter RF output is turned on and left on for more than 110 seconds. 2. The transmitter is given a command to transmit less than 30 seconds after a transmission has taken place.

  • Page 31: Appendix A. Data Formats And Transmission Durations

    (Table A-1 (p. 21)). Number are rounded to selected precision during conversion. For example, +12.345, will be rounded to +12.35. Value is always 7 characters including a trailing comma. Value is always signed (+/-). TX326 Satellite Transmitter for METEOSAT...
  • Page 32 Fields_Scan_Order = FALSE , Newest_First= FALSE , Format = 1 GoesField() Decimation = 1 <CR><LF>-7994.,-7994.,+8191.,-8191.,-8190.,+8191.,-8191.,- 8190.,+13.10,+27.32, GoesTable() Fields_Scan_Order = FALSE , Newest_First= FALSE , Format = 1 GoesField() Decimation = 4 <CR><LF>-7997.,-7997.,+8191.,-8191.,-8190.,+8191.,-8191.,- 8190.,+13.15,+26.08, <CR><LF>-7996.,-7996.,+8191.,-8191.,-8190.,+8191.,-8191.,- 8190.,+13.16,+26.04, <CR><LF>-7995.,-7995.,+8191.,-8191.,-8190.,+8191.,-8191.,- 8190.,+13.17,+26.03, <CR><LF>-7994.,-7994.,+8191.,-8191.,-8190.,+8191.,-8191.,- 8190.,+13.19,+26.18, TX326 Satellite Transmitter for METEOSAT...

  • Page 33: Ascii Table Space (Goestable() Format Option 2)

    SHEF Codes can be added as headers or at the beginning of lines using option SHEF. Value has a fixed width (Table A-2 (p. 23)). Value has a fixed precision (Table A-2 (p. 23)). Value only has a leading sign when negative (–). TX326 Satellite Transmitter for METEOSAT...
  • Page 34 <CR><LF>-9.78 -9.78 ///// ///// ///// ///// ///// ///// 13.14 26.08<CR><LF> GoesTable() Fields_Scan_Order = TRUE , Newest_First= FALSE , Format = 2 GoesField() Decimation = 1, Precision = 3, Width = 5 <CR><LF>-9.68 <CR><LF>-9.68 <CR><LF>///// <CR><LF>///// <CR><LF>///// <CR><LF>///// <CR><LF>///// <CR><LF>///// <CR><LF>13.12 <CR><LF>26.43<CR><LF> TX326 Satellite Transmitter for METEOSAT...
  • Page 35 Decimation = 4, Precision = 3, Width = 5, SHEF set to HG, TA, VB NOTE: GoesField() To get a single battery voltage (or other additional data), set Decimation = 1 for just the battery_voltage (or other) value in the GOESTable(). TX326 Satellite Transmitter for METEOSAT...

  • Page 36: Ascii Table Space, Comma Separated (Goestable() Format Option 3)

    Decimation = 1, Precision = 3, Width = 4 <CR><LF>-7.982,-7.982,////,////,////,////,////,////,13.1,25.8<CR><LF> GoesTable() Fields_Scan_Order = FALSE , Newest_First= FALSE , Format = 3 GoesField() Decimation = 4, Precision = 3, Width = 5 <CR><LF>-9.81,-9.81,/////,/////,/////,/////,/////,/////,13.15,26.08 <CR><LF>-9.80,-9.80,/////,/////,/////,/////,/////,/////,13.13,26.08 <CR><LF>-9.79,-9.79,/////,/////,/////,/////,/////,/////,13.14,26.08 <CR><LF>-9.78,-9.78,/////,/////,/////,/////,/////,/////,13.14,26.08<CR><LF> TX326 Satellite Transmitter for METEOSAT...
  • Page 37 <CR><LF>HG,TA,VB <CR><LF>-8.32,13.14,26.74 <CR><LF>-8.31,13.14,26.74 <CR><LF>-8.30,13.14,26.74 <CR><LF>-8.29,13.14,26.74<CR><LF> GoesTable() Fields_Scan_Order = TRUE , Newest_First= FALSE , Format = 3 GoesField() Decimation = 1, Precision = 3, Width = 5, SHEF set to HG, TA, VB <CR><LF>HG,-6.79 <CR><LF>TA,13.12 <CR><LF>VB,26.68<CR><LF> TX326 Satellite Transmitter for METEOSAT...

  • Page 38: Line Shef (Standard Hydrological Exchange Format) (Goestable() Format Option 6)

    (p. 23)). Value has a fixed precision (Table A-2 (p. 23)). Value only has a leading sign when negative (–). Data outside of operating range will be set to the minimum or maximum of the range. TX326 Satellite Transmitter for METEOSAT...

  • Page 39: Pseudobinary Data Formats

    To encode a number, its binary form is broken into groups of 6 bits. Each group is placed into the lower 6 bits of a respective byte. The TX326 Satellite Transmitter for METEOSAT...

  • Page 40: Campbell Scientific Fp2 Data

    +/– INF and NAN, most commonly used to indicate a computational or measurement error. Table A-5 (p. 30)) shows the numeric ranges and precision; Table A-6 (p. 30) describes the bits, Table A-7 (p. 30) provides bit usage in calculating a finished value. TX326 Satellite Transmitter for METEOSAT...
  • Page 41 6 bits of each character. For example, Table A-8 (p. 30) shows how the value of 12.34 is encoded. Table A-8: Encoding of 12.34 Character 1 = D Character 2 = S Character 3 = R Sign Exponent Mantissa Mantissa TX326 Satellite Transmitter for METEOSAT...

  • Page 42: Pseudobinary

    Table A-9: Example encoding of water level surface elevation value of 12345 Character 1 = C Character 2 = @ Character 3 = y A.2.3 Additional pseudobinary representations Other pseudobinary representations, such as 6, 12, and 24 bit integers, can be formed and transmitted using CRBasic. TX326 Satellite Transmitter for METEOSAT...
  • Page 44 Campbell Scientific regional offices Australia France Thailand Location: Garbutt, QLD Australia Location: Vincennes, France Location: Bangkok, Thailand Phone: 61.7.4401.7700 Phone: 0033.0.1.56.45.15.20 Phone: 66.2.719.3399 Email: info@campbellsci.com.au Email: info@campbellsci.fr Email: info@campbellsci.asia Website: www.campbellsci.com.au Website: www.campbellsci.fr Website: www.campbellsci.asia Brazil Germany Location: São Paulo, SP Brazil...

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