Signal Hound USB-TG44A User Manual

Tracking generator

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USB-TG44A Tracking Generator
User Manual

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Summary of Contents for Signal Hound USB-TG44A

  • Page 1 USB-TG44A Tracking Generator User Manual...
  • Page 2 Signal Hound USB-TG44A User Manual  2015, Signal Hound, Inc. 35707 NE 86th Ave La Center, WA 98629 USA Phone 360.263.5006 • Fax 360.263.5007 This information is being released into the public domain in accordance with the Export Administration Regulations 15 CFR 734...
  • Page 3: Table Of Contents

    1.1 INITIAL INSPECTION ................................1 1.2 SOFTWARE INSTALLATION ..............................1 2 Getting Started ..................................2 2.1 THE USB-TG44A FRONT & REAR PANELS ........................2 3 Taking Measurements ................................. 3 3.1 MEASURING INSERTION LOSS OR GAIN ......................... 3 3.1.1 Improving Accuracy .................................. 4 3.1.2 Testing High Gain Amplifiers ..............................
  • Page 4 9.1.6 Credit Notice ....................................9...
  • Page 5: Preparing For Use

    1 Preparing For Use Unpacking your Tracking Generator and Installing Software The Signal Hound USB-TG44A is a USB-based 10 Hz to 4.4 GHz economy tracking generator that works with the USB-SA series and BB60C spectrum analyzers, facilitating scalar network analyzer measurements.
  • Page 6: Getting Started

    Learn about the basic functions and features of your Signal Hound Tracking Generator The primary use for the USB-TG44A tracking generator is to form a scalar network analyzer when paired with the USB-SA44B spectrum analyzer and the Spike software. The insertion loss of filters, amplifiers, cables, and attenuators can be measured quickly and accurately from 10 Hz to 4.4 GHz.
  • Page 7: Taking Measurements

    USB-TG44A tracking generator. MEASURING INSERTION LOSS OR GAIN The Signal Hound USB-TG44A Tracking Generator may be used to measure insertion loss or gain. To measure insertion loss of a cable or attenuator, the following approach is recommended: 1.
  • Page 8: Improving Accuracy

    3.1.1 Improving Accuracy One shortcoming of the Signal Hound Spectrum Analyzer and Tracking Generator is poor VSWR / return loss performance. However, this can be easily overcome by adding good 3 dB or 6 dB pads (fixed SMA attenuators) to the output of the tracking generator and / or the input of the spectrum analyzer. A good 6 dB pad will improve return loss by nominally 12 dB to >20 dB, and should enable accurate...
  • Page 9: Adjusting An Antenna

    However, when verifying the output power level with an RF power meter, the harmonic content can add up to 0.7 dB to the measured output. Please note that the phase noise of the USB-TG44A is higher than the USB-SA44. However, this will have minimal impact on readings as out-of-band energy is rejected by the spectrum analyzer.
  • Page 10: General Troubleshooting Procedure

    Otherwise, contact technical support at http://www.signalhound.com 5.1.2 General Advice to avoid problems Unplug your USB-TG44A from the USB port when not in use, or before shutting down your  computer. For maximum stability, a 15 minute warmup is recommended for sensitive measurements.
  • Page 11: Specifications

    20° C to 25° C to achieve published specifications 0° C to 70° C safe operating range with derated amplitude specifications CALIBRATION Test with factory calibration software to verify that USB-TG44A is operating within tolerance. Recommended calibration interval is 1 year at 20°C to 25°C.
  • Page 12: Adjustments

    Revision History | ADJUSTMENTS ADJUSTMENTS Factory adjustment software shall be used to generate new calibration constants when USB-TG44A will not pass calibration. 8 Revision History Version 3.00 – Initial release under the Spike software 9 Warranty and Disclaimer ©Copyright 2015 Signal Hound. All rights reserved Reproduction, adaptation, or translation without prior written permission is prohibited, except as allowed under the copyright laws.
  • Page 13: Exclusive Remedies

    Warranty and Disclaimer | ADJUSTMENTS Equipment Plus specifically disclaims the implied warranties or merchantability and fitness for a particular purpose. 9.1.4 Exclusive Remedies The remedies provided herein are the Buyer’s sole and exclusive remedies. Test Equipment Plus shall not be liable for any direct, indirect, special, incidental, or consequential damages, whether based on contract, tort, or any other legal theory.

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