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Summary of Contents for RigExpert AA-2000 ZOOM
- Page 1 AA-2000 ZOOM RigExpert ® Antenna and cable analyzers User’s manual...
- Page 2 For latest manuals and software updates, please visit http://rigexpert.com...
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Page 3: Table Of Contents
Table of contents Introduction Operating the AA-2000 ZOOM First time use Main menu Multifunctional keys Connecting to your antenna SWR chart Chart ZOOM Data screen Frequency and range entry Return loss chart R,X chart Smith chart Memory operation SWR mode... -
Page 4: Introduction
Introduction Thank purchasing a RigExpert AA-2000 ZOOM Antenna and Cable Analyzer! We did our best to make it powerful yet easy to use. The analyzer is designed for measuring SWR (standing wave ratio), return loss, cable loss, as well as other parameters of cable and antenna systems in the range of 100 kHz to 2000 MHz. -
Page 5: Operating The Aa-2000 Zoom
USB icon when the analyzer is connected to your computer. You may use hot keys for the quick access to certain tasks. For instance, press (SWR chart) button to open the SWR chart screen immediately. RigExpert AA-2000 ZOOM... -
Page 6: Multifunctional Keys
Multifunctional keys Most keys on the analyzer’s keypad perform several functions. For instance, numbers (1) are used to enter frequency and other numerical parameters. Main functions (2) provide quick access to most common tasks. Alternative functions (3) are executed if the user holds the (Functional) key. -
Page 7: Swr Chart
(Cursor down) key combination to zoom the vertical scale of the chart. Do not forget to press the (OK) key for the new measurement to start. Press (Functional key) and to quickly choose a radio amateur band. RigExpert AA-2000 ZOOM... -
Page 8: Data Screen
Data screen The data screen is available in all chart modes. Press the (Data) key to display various parameters of a load at cursor. Frequency and range entry To enter the center frequency or the sweep range, press the (Frequency, Range) key. -
Page 9: R,X Chart
(Smith chart) key opens a screen where the reflection coefficient is plotted on the Smith chart. For a list of hot keys, press the (Help) key, as usual. A small marker is used to indicate the center frequency. RigExpert AA-2000 ZOOM... -
Page 10: Memory Operation
Memory operation Device has 250 unified slots for storing your records. Record operations are linked to relevant data screens - SWR, RX, RL, Smith charts mark their records with ‘Z’ slot identificator, TDR chart marks with ‘T’ identificator. , or respectively for Load, Save or Edit Name operations in relevant data screens. -
Page 11: Display All Parameters
• In the series model, impedance is • In the parallel model, impedance is expressed as resistance and reactance expressed as resistance and reactance connected in series: connected in parallel: Z = R + jX Z = R ||+ jX RigExpert AA-2000 ZOOM... -
Page 12: Multiswr Mode
MultiSWR mode Press the (Functional key) and (Multi) key combination to see the SWR at up to five different frequencies. This mode may be useful for tuning multi- band antennas. (Up) and (Down) cursor keys to select a frequency to be set or changed, then press the (Frequency) key to enter a new value. -
Page 13: Applications
SWR chart for this band. The picture on the left shows the result for one band real antenna. The next screen shot shows result for 50 Ohm calibrated load, making in such way ideal all-band antenna (in mathematical terms only). RigExpert AA-2000 ZOOM... -
Page 14: Coaxial Lines
Adjusting the antenna When the measurement diagnoses that the antenna is off the desired frequency, the analyzer can help in adjusting it. Physical dimensions of a simple antenna (such as a dipole) can be adjusted knowing the actual resonant frequency and the desired one. Other types of antennas may contain more than one element to adjust (including coils, filters, etc.), so this method will not work. - Page 15 299,792,458 × 0.66 = constant and the velocity factor of the 197,863,022 meters per second particular type of cable, find the speed of - or - electromagnetic wave in this cable. 983,571,056 × 0.66 = 649,156,897 feet per second RigExpert AA-2000 ZOOM...
- Page 16 3. Calculate the physical length of the 197,863,022 / 4,370,000 × (1/4) = cable by dividing the above speed by 11.32 meters the resonant frequency (in Hz) and - or - multiplying the result by the number 649,156,897 / 4,370,000 × (1/4) = which corresponds to the location of this 37.14 feet resonant frequency (1/4, 1/2, 3/4, 1, 5/4,...
- Page 17 Watch the behavior of the reactive component (X) near the zero frequency: ∞ • If the value of X is moving from – to 0, the cable is open-circuited: ∞ • If the value of X is moving from 0 to + , the cable is short-circuited: RigExpert AA-2000 ZOOM...
- Page 18 Making 1/4-λ, 1/2-λ and other coaxial stubs Pieces of cable of certain electrical Example: length are often used as components of 1/4- λ stub for 28.2 MHz, cable is RG- baluns (balancing units), transmission 58 (velocity factor is 0.66) line transformers or delay lines. To make a stub of the predetermined electrical length, 1.
- Page 19 Ohm resistor at the far end. 100 Ohm resistors. 2. Enter the R,X chart mode and make measurement in a reasonably large frequency range (for instance, 0 to 200 MHz). Example 1: Example 2: 50-Ohm cable Unknown cable RigExpert AA-2000 ZOOM...
- Page 20 3. Changing the display range and Example 1: performing additional scans, find a 4.46 MHz – min., 8.92 MHz – max. frequency where R (resistance) reaches Example 2: its maximum, and another frequency 3.47 MHz – max., 7.16 MHz – min. with minimum.
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Page 21: Measurement Of Other Elements
The analyzer can measure capacitance from a few pF to about 0.1 μF as well as inductance from a few nH to about 100 μH. Since measuring of capacitance and inductance is not a main purpose of RigExpert analyzers, the user will have to gain some experience in such measurements. - Page 22 Unknown inductor Transformers RigExpert analyzers can also be used for checking RF transformers. Connect a 50 Ohm resistor to the secondary coil (for 1:1 transformers) and use SWR chart, R,X chart or Smith chart modes to check the frequency response of the transformer. Similarly, use resistors with other values for non-1:1 transformers.
- Page 23 A one-turn coil (about 10 cm in diameter) connected to the analyzer was placed, co-axially, a few centimeters away from the measured trap. The SWR chart shows a visible dip near 10.3 MHz, which is a resonant frequency of the trap. RigExpert AA-2000 ZOOM...
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Page 24: Annexes
Factory OSL: Yes Annex 1 User OSL: 10 profiles available Records: 250 unified memory slots Specifications RF output: • Connector type: N • Output signal shape: square Frequency range: 0.1 to 2000 MHz • Output power: -10 dBm (at 50 Ohm Frequency entry: 1 kHz resolution load) Output impedance: 50 Ohm... -
Page 25: Annex 2: Precautions
This may cause interference to nearby receivers. If using a personal computer, first connect the cable to the antenna connector of the analyzer, then plug the analyzer to the computer USB port. This will protect the analyzer from static discharges. RigExpert AA-2000 ZOOM... -
Page 26: Annex 3 Tools Menu
Annex 3 Tools menu For the quick access to the the Tools menu, press the key combination. Stub tuner The Stub tuner mode is designed to help making or checking 1/4-λ or 1/2-λ coaxial stubs. Connect either open or short circuited cable to the analyzer and press (OK) to start. - Page 27 To find the velocity factor of an unknown cable, press the (Down) key and enter the physical length, then press (OK). The velocity factor depends on a type of your transmission line. For instance, RG-58 cable with polyethylene insulator has VF=0.66. RigExpert AA-2000 ZOOM...
- Page 28 Cable loss To measure the loss in a coaxial cable, connect a piece of a cable to the antenna connector of the analyzer. Make sure the far end of the cable is open circuited. Press (OK) to start. Next, short circuit the far end of the cable and press (OK) to continue.
- Page 29 (Left) and (Right) cursor keys to find the location where the impedance is stable. The result is shown at the bottom left corner of the screen. (Up) and (Down) key combinations to change the scale, if needed. RigExpert AA-2000 ZOOM...
- Page 30 Self tests There are several built-in self tests in the AA-2000 ZOOM analyzer, which can be run by the user to make sure the analyzer is working properly. Press to start the test and then follow instructions given on the display.
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Page 31: Annex 4 Setup Menu
• Cable vel. factor – choose a velocity factor of the coaxial cable for the TDR mode • Freq. corr. – frequency correction of the analyzer’s oscillator • Reset settings – reset the analyzer to factory defaults • Clear saved charts – clear all memory slots • RigExpert AA-2000 ZOOM... -
Page 32: Annex 5 Tdr Mode
Annex 5 TDR mode Theory Time domain reflectometers (TDR) are electronic instruments used for locating faults in transmission lines. A short electrical pulse is sent over the line, and then a reflected pulse is observed. By knowing the delay between two pulses, the speed of light and the cable velocity factor, the DTF (distance- to-fault) is calculated. - Page 33 Unlike many other commercially-available reflectometers, RigExpert AA-2000 ZOOM does not send pulses into the cable. Instead, another technique is used. First, R and X (the real and the imaginary part of the impedance) are measured over the whole frequency range (up to 2000 MHz). Then, the IFFT (Inverse Fast Fourier Transform) is applied to the data.
- Page 34 User’s manual...
- Page 35 To switch view press , use for numerical representation all data at marker. Three pictures there show real measure of short open stub in different view modes. Explore built-in help for other buttons functionality. RigExpert AA-2000 ZOOM...
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Page 36: Annex 6 Calibration
Annex 6 Calibration RigExpert AA-2000 ZOOM is designed for high performance and uses factory open- short-load (OSL) calibration. To make usage more flexible for expirienced users there are 10 user OSL profiles, that can be applied above factory OSL. The standards used for calibration should be of high quality. This requirement is especially important for high frequencies (100 MHz and upper). - Page 37 “nulled”. apply calibration, press key combination in any measurement mode. The small “CALn“ mark will appear on screen, where n is number of active profile(0..9) RigExpert AA-2000 ZOOM...
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Page 38: Annex 7: Dummy Loads
Annex 7 Dummy loads Amphenol 202109-10 1 Watt terminator plug Low SWR 50 Ohm dummy loads are not all equal. For calibration (see page 32), please use low-power RF terminators which provide low SWR over the wide frequency range. High-power terminators, with cable or not, are suitable neither for calibration purposes (page 32), nor for analyzer self-tests (page 30). - Page 39 RigExpert AA-2000 ZOOM...
- Page 40 This symbol is only valid in the European Union (EU). If you wish to discard this product, please contact your local authorities or dealer and ask for the correct method of disposal. http://www.rigexpert.com Copyright © 2020 Rig Expert Ukraine Ltd. “RigExpert” is a registered trademark of Rig Expert Ukraine Ltd. Doc. date: 23-June-2020...