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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

 

 

In the 

SWR graph

 mode (press the 

 4  

key in the 

Main menu

), values of the Standing 

Wave Ratio are plotted over the specified range: 

 

 

 
You may set center frequency (the 

 2  

key) or scanning range (the 

 3  

key). By using 

arrow keys, these parameters may be increased or decreased. 
 
Press the 

 ok  

key to refresh the graph. 

 
The 

 0  

key opens a list of radio amateur bands to set the required center frequency and 

scanning range quickly. Also, you may use this function to see the whole frequency 
range supported by the analyzer.  
 
Press the

 

 1  

key to access the list of additional commands for this mode. 

 
 

4.3.2. R,X graph

 

 
In the 

R,X graph

 mode (press the 

 5  

key in the 

Main menu

), values or R (active part of 

the impedance) and X (reactive part) are plotted as solid and dotted lines, respectively. 
 

Содержание AA-200

Страница 1: ...RigExpert AA 200 0 1 to 200 MHz AA 500 5 to 500 MHz Antenna Analyzers User s manual...

Страница 2: ...5 Computer connection 10 4 6 Charging the accumulator 11 5 Applications 12 5 1 Antennas 12 5 1 1 Checking the antenna 12 5 1 2 Adjusting the antenna 12 5 2 Coaxial lines 13 5 2 1 Open and short circu...

Страница 3: ...uter make 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 accompli...

Страница 4: ...requency resolution AA 200 1 kHz AA 500 10 kHz SWR range 1 10 SWR display for 50 and 75 Ohm systems R X range AA 200 0 200 200 200 Ohm AA 500 0 200 0 200 Ohm 100 memories to store and recall graphs Pr...

Страница 5: ...rms Lightning strikes as well as static charge may harm it Never inject RF signal into the analyzer Do not connect it to your antenna if you have active transmitters nearby Avoid static discharge whil...

Страница 6: ...alyzer is plugged to a personal computer The charging indicator shows if an external charger is connected to the analyzer The low battery indicator flashed when the accumulator has to be urgently char...

Страница 7: ...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 a...

Страница 8: ...magnitude of impedance as well as its active R and reactive X components are shown Additionally corresponding values of inductance L or capacitance C are displayed Please notice that RigExpert AA 500...

Страница 9: ...requency the 2 key or scanning range the 3 key By using arrow keys these parameters may be increased or decreased Press the ok key to refresh the graph The 0 key opens a list of radio amateur bands to...

Страница 10: ...ay recall 9 the plots from the specified memory Additionally the F 9 combination opens the editor of memory slot names 4 4 Settings menu The Settings menu press the 0 key in the Main menu contains var...

Страница 11: ...take almost no effect if the LCD backlit is turned on and or one of the continuous measurement modes is active If the analyzer is being used for the first time perform a full 10 12 hour charging cycl...

Страница 12: ...e operating frequency is 146 2 MHz The SWR at this frequency is about 1 1 which is acceptable The next screen shot shows SWR graph of the simple dipole antenna with desired operating frequency of 14 1...

Страница 13: ...e Short circuited cable The above pictures show R and X graphs for a piece of cable with open and short circuited end A resonant frequency is a point at which X see the dotted line equals to zero In t...

Страница 14: ...e 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 Example 299792458 0 66 197863022...

Страница 15: ...requency in Hz Example 10 09 1 4 4835000 195140600 meters per second or 33 10 1 4 4835000 640154000 feet per second 3 Finally find the velocity factor Just divide the above speed by the electromagneti...

Страница 16: ...9792458 28200000 0 66 1 4 1 75 meters or 983571056 28200000 0 66 1 4 5 75 feet 2 Cut a piece of cable slightly longer than this value Connect it to the analyzer The cable must be open circuited at the...

Страница 17: ...it is recommended to use 50 to 100 Ohm resistors Example 1 RG 58 cable with 51 Ohm resistor at the far end Example 2 Unknown cable with 51 Ohm resistor at the far end 2 Enter the R X graph mode and m...

Страница 18: ...ors RigExpert AA 200 AA 500 Antenna analyzers can measure capacitance from a few pF to about 1 F as well as inductance from a few nH to about 100 H Be sure to place the capacitor or the inductor as cl...

Страница 19: ...and use SWR graph or R X graph modes to check the frequency response of the transformer Similarly use resistors with other values for non 1 1 transformers 5 4 RF signal generator The output signal lev...

Страница 20: ...20 Copyright 2007 2008 Rig Expert Ukraine Ltd http www rigexpert com RigExpert is a registered trademark of Rig Expert Ukraine Ltd...

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