DxShop T200 Instruction Manual

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INSTRUCTION MANUAL

CAUTION : Read All Instructions Before Operating Equipment

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Page 1 DxShop INSTRUCTION MANUAL CAUTION : Read All Instructions Before Operating Equipment...
Page 2: Table Of Contents
INTRODUCTION................. 2 THEORY OF OPERATION..............4 T200 Technical Specifications ............. 5 LAYOUT AND CONTROLS..............5 Analyzer Test Port............5 USB Data Port..............5 LCD Screen..............5 Boot Key ................ 6 Arrows (up/down) ............6 Enter Key ............... 6 Return (Exit) ..............6 Mode ................
Page 3 You will find valuable operating information along with important tips to help you take full advantage its full range of features. The T200 is accurately calibrated at the factory and should not need recalibration for initial use. Do not run CALIBRATE with out proper calibration loads.
Page 4: Introduction
T200 Graphical Antenna Impedance Analyzer 1. INTRODUCTION The T200 is part of the Times Technology Series of analyzers and is a compact single-port Vector Network Analyzer (VNA) that characterizes complex RF loads in 50-Ohm systems with a high degree of accuracy.
Page 5 T200 Graphical Antenna Impedance Analyzer Whether you are putting up a simple dipole, building a complex matching network, or characterizing an unknown device, the T200 delivers the type of data you need to get the job done. A user-friendly menu system provides rapid access to all operating modes and...
Page 6: Theory Of Operation
Using the Keypad and Menu System, the operator can call up the specific type of data needed for display on the LCD Screen. The T200 is compact and simple to use, but offers several advanced features that set it apart from may lower-cost analyzers. These features...
Page 7: T200 Technical Specifications
T200 Graphical Antenna Impedance Analyzer 3. T200 Technical Specifications Frequency Range: Continuous, 1 MHz to 230 MHz Frequency Resolution: 1 Hz Test Port Termination Type-N Female Output Power >-10 dBm typical Harmonics -15 dBc typical LCD Display 128 x 64 resolution with backlight Dimensions 6.5"...
Page 8: Boot Key
The T200 features a built-in battery indicator that must be set up for the type of battery you intend to use. See the Settings Menu for details.
Page 9: Menu Structure
T200 Graphical Antenna Impedance Analyzer 6. MENU STRUCTURE The T200 features short circular menus that allow you to identify and access all functions quickly and easily. The Main Menu and its five Sub-Menus are shown below: Main Menu Single Freq...
Page 10: Battery Menu
T200 Graphical Antenna Impedance Analyzer Battery Menu: Sets low-battery warning threshold (upper right corner of LCD screen). Alkaline: Low-battery indicator threshold Alkaline cells. Disable: Low-battery indicator threshold set for NiMH rechargeable cells. Step Size Unit: Select between 1MHz to 1Hz steps.
Page 11: Entering Single-Frequency Mode
T200 Graphical Antenna Impedance Analyzer 8. ENTERING SINGLE-FREQUENCY MODE To enter the analyzer's Single-Frequency Mode, go to the Main Menu and select Single Freq using the up/down arrows. Then press Enter. The SWR screen will come up. SETTING THE DDS OPERATING FREQUENCY There are two ways to set DDS frequency -- Direct Entry and Scroll/Step Entry.
Page 12: Screen 2. Swr Z R X Display
T200 Graphical Antenna Impedance Analyzer Screen 2. SWR Z R X Display: Displays similar to the first screen but has the SWR in smaller characters and also displays the Z R and X of the load. (Added in firmware V01R02 and is not in earlier firmware.) Screen 3, Series Impedance: Displays the load's resistive and reactive component as two discrete elements connected in series.
Page 13: Screen 5, S11 Scattering Parameters
T200 Graphical Antenna Impedance Analyzer Screen 5, S11 Scattering Parameters: Displays Rectangular and Polar S11 representations of the load. For all screens, press the Return Arrow to return to the Main Menu. 9. ENTERING SWEPT FREQUENCY MODE This mode plots seven test parameters over a frequency span of your choice.
Page 14: Swept-Frequency Setup
T200 Graphical Antenna Impedance Analyzer SWEPT-FREQUENCY SETUP Swept-Freq operations require some initial setup using prompts controlled by the Mode key. These prompts will appear in the numerical data window at the bottom of the LCD screen. Entry items include: Start Frequency: At the prompt, use the keypad or scroll-step procedure to create a start frequency for your sweep.
Page 15: Saving Test Data
SAVING TEST DATA In addition to four cal-data files, the T200 has 32 data files available to save plots for later upload onto a PC as CSV files. Save File: To save a plot, use the Up/Down Arrow keys to select one of the 32 file locations and press Enter.
Page 16: Reactance Screen (+X Or -X)
T200 Graphical Antenna Impedance Analyzer resistive component as a function of frequency. Note that a corresponding reactance value and sign also appear. Reactance Screen (+X or -X): The Reactance plot tracks both reactive value and displays sign to accurately identify if the load is capacitive or inductive.
Page 17: Phase Angle (Deg)
T200 Graphical Antenna Impedance Analyzer Phase Angle (Deg): When a test signal (incident wave) is transmitted to the load under test, the returning signal (reflected wave) will rarely return in phase. This screen plots the phase angle and amplitude ratio between the incident and reflected wave.
Page 18: Calibration
Poorly made loads will add errors to the calibration causing the unit to loose accuracy especially in the VHF range. High RF Fields may interfere with antenna measurements. You can check the accuracy with known loads to verify that the T200 is still calibrated. Version V01R05...
Page 19: Global Calibration File
T200 Graphical Antenna Impedance Analyzer Global Calibration File All of the T200 analyzer’s calibration data is stored in flash memory. Five cal-memory slots are available. One contains the Global calibration file. The Global file covers the entire 1-MHz to 230-MHz frequency span.
Page 20 T200 Graphical Antenna Impedance Analyzer However, it is a good idea to check the calibration and recalibrate your analyzer if needed periodically as a normal preventive maintenance procedure. In addition, in some circumstances, you may wish to alter the Global Cal to compensate for a specific test cable or test fixture. In...
Page 21: Calibration Load Set
Enter. Upon completion, the new Global Cal will lock in place automatically and the analyzer will be ready to use. The T200 can be re-calibrated at any time. If you suspect your measurement results may be inaccurate for any reason, a Global recalibration will eliminate the analyzer as the source of the problem.
Page 22: Using Your Pc To Command The Analyzer
Connect the T200 to the USB cable and computer. Launch the program. It will automatically find the T200 and connect. Once the COM port of the T200 is click on START. The button will become Running. Click on it again to stop the function. Click on Quit to exit the program.
Page 23 To save in CSV format click the Save to File and enter the information in the Save As window. To load data from the T200 click on the Load from T200 button and select the data file to retrieve. To print the graph from the screen press the print button (v1.0.0.48) and select the printer to print to.
Page 24: Manual Control Via Computer
This mode can be used for making custom data capture and control routines. Set the T200 as above to select the PC Mode. To permit communication, the serial port between the T200 and the PC should be configured as follows:...
Page 25: Firmware Update Procedure
.ENC The Format should be something like “T200VxxRxx.ENC” Click on the update button and the update should start. Once finished turn off the T200 and click on the quit button to close the program.
Page 26 DxShop. Warrants to the original owner of this product, if manufactured by DxShop. and purchased from an authorized dealer or directly from DxShop. to be free from defects in material and workmanship for a period of 12 months from date of purchase provided the following terms of this warranty are satisfied.
Page 27 All DXSHOP products to be serviced in-warranty or out-of-warranty should be addressed to DxShop., Unit A2, 15/F, Hang Cheong Factory Bldg,1 Wing Ming Street, Cheung Sha Wan HK. and must be accompanied by a letter describing the problem in detail along with a copy of your dated proof-of-purchase.