Related Manuals for RigExpert AA-200
Summary of Contents for RigExpert AA-200
- Page 1 ® RigExpert AA-200 0.1 to 200 MHz AA-500 5 to 500 MHz Antenna Analyzers User’s manual...
- Page 2 Table of contents 1. Description ………………………………………… 3 2. Specifications ……………………………………… 4 3. Precautions ………………………………………… 5 4. Operation ………………………………………….. 6 4.1. Main menu …………………………….... 6 4.2. Single- and multi-point measurement modes ... 6 4.2.1. SWR mode …………………………….. 6 4.2.2. SWR2Air mode ……………………….. 7 4.2.3.
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Page 3: Description
RigExpert AA-200/AA- 500 attractive for professionals and hobbyists. The new MultiSWR™ and SWR2Air™ [AA-200 only] modes are unique for these antenna analyzers. The following tasks are well-accomplished by using RigExpert AA-200/AA-500: • Rapid check-out of an antenna •... -
Page 4: Specifications
SWR at single or multiple frequencies SWR, R, X, Z, L, C at single frequency SWR graph R, X graph [RigExpert AA-500 displays absolute value of the reactance] Single- and multi-frequency measurement: Frequency resolution: AA-200: 1 kHz AA-500: 10 kHz SWR-only mode: easily-readable bar SWR range: 1…10... -
Page 5: Precautions
3. Precautions Never leave the analyzer connected to your antenna after you finished operating it. Occasional lightning strikes or nearby transmitter may permanently damage it. Never connect the analyzer to your antenna in thunderstorms. Lightning strikes as well as static charge may harm it. Never inject RF signal into the analyzer. -
Page 6: Operation
4. Operation 4.1. Main menu The on-screen menu system of the AA-200/AA-500 Antenna Analyzer provides a simple but effective way to control the entire device. Once the analyzer is turned on, a Main menu appears on the LCD: The Main menu contains a brief list of available commands. By pressing keys on the keypad, you may enter corresponding measurement modes, set up additional parameters, etc. -
Page 7: Swr2Air Mode
4.2.2. SWR2Air mode [AA-200 only] RigExpert AA-200 Antenna Analyzer presents the new SWR2Air mode which is designed to help in adjusting antennas connected via long cables. Traditionally, this job requires at least two persons: one of them adjusts certain adjustment elements of the antenna, while the other one continuously watches the value of the SWR on the lower end of the cable and corrects actions of the first person. -
Page 8: Show All" Mode
(X) components are shown. Additionally, corresponding values of inductance (L) or capacitance (C) are displayed: [Please notice that RigExpert AA-500 displays absolute value of the reactance, |X|.] For this this mode, you may choose either series or parallel model of impedance of a load through the Settings menu: •... -
Page 9: Graph Modes
4.3. Graph modes A key feature of RigExpert AA-200/AA-500 Antenna Analyzers is ability to display various parameters of a load graphically. Graphs are especially useful to view the behavior of these parameters over the specified frequency band. 4.3.1. SWR graph... -
Page 10: Memory Operation
Please notice the difference in the plots when series or parallel model of impedance is selected through the Settings menu. [Please notice that RigExpert AA-500 displays absolute value of the reactance, |X|.] 4.3.3. Memory operation In the SWR graph and R,X graph modes, you may choose to scan to memory (the key). -
Page 11: Charging The Accumulator
4.6. Charging the accumulator Use the supplied DC adapter or any other 9…14V DC source as an external charger for the built-in Ni-MH accumulator. A car lighter cable may be used for this purpose. You may have the charger connected while operating the analyzer. However, this will take almost no effect if the LCD backlit is turned on and/or one of the continuous measurement modes is active. -
Page 12: Applications
5. Applications 5.1. Antennas 5.1.1. Checking the antenna It is a good idea to check an antenna before connecting it to the receiving or transmitting equipment. The SWR graph mode is right for this purpose: The above picture shows SWR graph of the vertical VHF antenna connected via the 40 m (131 ft) cable. -
Page 13: Coaxial Lines
• For the short-circuited cable, these points are located at 1/2, 1, 3/2, etc. of the wavelength. [Please notice that RigExpert AA-500 displays absolute value of the reactance, |X|.] 5.2.2. Cable length measurement Resonant frequencies of a cable depend on its length as well as on the velocity factor. - Page 14 RG-58 cable is 4835 kHz [Please notice that RigExpert AA-500 displays absolute value of the reactance.] 2. Knowing the electromagnetic constant and the velocity factor of the particular type of cable, find the speed of electromagnetic wave in this cable.
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Page 15: Velocity Factor Measurement
• 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. [Please notice that RigExpert AA-500 displays absolute value of the reactance.]... -
Page 16: Coaxial Stubs
5.2.5 Making 1/4-λ, 1/2-λ and other coaxial stubs Pieces of cable of certain electrical length are often used as components of baluns (balancing units), transmission line transformers or delay lines. To make a stub of the predetermined electrical length, 1. Calculate the physical length. Divide the electromagnetic constant by the required frequency (in Hz). -
Page 17: Measuring The Characteristic Impedance
Example 1: RG-58 cable Example 2: Unknown cable [Please notice that RigExpert AA-500 displays absolute value of the reactance.] 3. Changing the display range and performing additional scans, find a frequency where R (solid line) reaches its maximum, and another frequency with minimum. -
Page 18: Measurement Of Other Elements
RF elements. 5.3.1. Capacitors and inductors RigExpert AA-200/AA-500 Antenna analyzers can measure capacitance from a few pF to about 1 µF as well as inductance from a few nH to about 100 µH. -
Page 19: Transformers
5.4. RF signal generator The output signal level is about +10 dBm for RigExpert AA-200 and about +5 dBm for RigExpert AA-500 (at the 50 Ohm load). Therefore these analyzers can be used as a source of RF signal for various purposes. Enter the SWR mode or the Show all mode,... - Page 20 Copyright © 2007-2008 Rig Expert Ukraine Ltd. http://www.rigexpert.com RigExpert is a registered trademark of Rig Expert Ukraine Ltd.