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PRAXSYM T-meter User Manual

Broadband wireless power meter
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User's Manual
Broadband Wireless Power Meter

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Summary of Contents for PRAXSYM T-meter

  • Page 1 User’s Manual Broadband Wireless Power Meter...
  • Page 2 Warranty concerns or claims should be pursued with the company from which the product was purchased. PRAXSYM warrants that all items will be free from defects in material and workmanship under use as specified in this guide for a period of one year from date of delivery.

  • Page 3: Table Of Contents

    P R A X S Y M TABLE OF CONTENTS Introduction Measuring Transmitter Power Measuring Transmission Line Loss Measuring VSWR of Antenna and Terminations Specifications Appendix — VSWR Table Appendix—Notes Page ii...

  • Page 4: Introduction

    BROADBAND WIRELESS POWER METER Introduction The unit is a handheld broadband power meter capable of detecting forward and reflected power in a microwave radio system. The me- ter is capable of detecting various types of wireless broadband modu- lation schemes in many popular licensed and unlicensed frequency bands worldwide.

  • Page 5: Use

    P R A X S Y M The meter ships with a durable nylon case that is secured with hook and loop flaps. The package is designed such that the meter can be used while still in the nylon case. The flaps that cover and protect the meter can be secured behind the unit while it is in use.
  • Page 6 BROADBAND WIRELESS POWER METER The meter should always be inserted into the system in the forward power direction. Use the arrow labeled “FORWARD SIGNAL” as a guide when connecting the meter. Pressing and quickly releasing the ON-OFF button turns the meter on.
  • Page 7 P R A X S Y M FWD: Displays forward power and VSWR. A right-pointing arrow in the upper right of the display indicates the meter is measuring forward power. The power measurement is displayed continuously. The VSWR is displayed for two seconds on the bottom display line and then is replaced for one second by the band indi- cator (“2.4G”, for example) and the in-line attenuator setting (“00 attn”, “10 attn”, “20 attn”, or “30 attn”).

  • Page 8: Measuring Transmitter Power

    BROADBAND WIRELESS POWER METER Measuring Transmitter Power The meter should be connected to the transmitter according to the “FORWARD SIGNAL” label on the meter (see the illustration on the opposite page). Depending on the gender of the type “N” connector on the transmitter it may be necessary to use the double male type “N”...
  • Page 9 P R A X S Y M Page 6...

  • Page 10: Measuring Transmission Line Loss

    BROADBAND WIRELESS POWER METER Measuring Transmission Line Loss Measure the forward power of the transmitter as shown on the previ- ous pages. Use the 50 Ω termination included in the kit as the load. Make note of the forward power reading. Disconnect the meter from the transmitter.
  • Page 11 P R A X S Y M Page 8...

  • Page 12: Measuring Vswr Of Antenna And Terminations

    1.2:1. Most antenna manufactures in the license-exempt broadband wireless market advertise a VSWR of 1.5:1. Therefore, a defective or damaged antenna feed should be pretty evident using the t-meter, as they will indicate a VSWR higher than 1.5:1. It is possible to measure the VSWR (or return loss) of a transmission line termination by placing the meter between it and the radio.
  • Page 13 P R A X S Y M Page 10...

  • Page 14: Specifications

    BROADBAND WIRELESS POWER METER Electrical Specifications Frequency Range: 2.4-2.4835 GHz All t-meter models 5.15-5.35 GHz 5.47-5.5975 GHz 5.5975-5.725 GHz 5.725-5.85 GHz PM-900 902-926 MHz PM-3500 3.4-3.7 GHz PM-4900 4.94-4.99 GHz Forward Power Measurement Range: 0 dBm to 20 dBm (no inline attenuation)

  • Page 15: Environmental Specifications

    P R A X S Y M Environmental Specifications Temperature Range: -10 to 50°C Humidity: 0 to 95% RH non-condensing Altitude: 0 to 15,000 feet Mechanical Specifications RF Connectors: Type “N” female (input, output) Display: 2 lines by 8 characters, LCD – not illuminated Keypad: Five keys –...

  • Page 16: Appendix - Vswr Table

    BROADBAND WIRELESS POWER METER Appendix - VSWR Table Return Loss Reflected Transmiss. VSWR (dB) Power (%) Loss (dB) 1.01 46.1 0.005 0.0002 1.02 40.1 0.01 0.0005 1.03 36.6 0.022 0.0011 1.04 34.1 0.04 0.0018 1.05 32.3 0.06 0.0028 1.06 30.7 0.082 0.0039 1.07...
  • Page 17 Return Loss Reflected Transmiss. VSWR (dB) Power (%) Loss (dB) 1.38 15.9 2.55 0.112 1.39 15.7 2.67 0.118 15.55 2.78 0.122 1.41 15.38 0.126 1.42 15.2 3.03 0.132 1.43 15.03 3.14 0.137 1.44 14.88 3.28 0.142 1.45 14.7 3.38 0.147 1.46 14.6 0.152...

  • Page 18: Appendix-Notes

    BROADBAND WIRELESS POWER METER Notes Page 15...
  • Page 19 P R A X S Y M Notes Page 16...
  • Page 20 P R A X S Y M 070110 Rev C 900-000002-002...

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