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RigExpert

®

AA-170

Antenna Analyzer (0.1 to 170 MHz)

User’s manual

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Summary of Contents for AA-170

Page 1: ...RigExpert AA 170 Antenna Analyzer 0 1 to 170 MHz User s manual...

Page 2: ...emory operation 11 4 6 Settings menu 11 4 7 Computer connection 14 5 Applications 15 5 1 Antennas 15 5 1 1 Checking the antenna 15 5 1 2 Adjusting the antenna 15 5 2 Coaxial lines 16 5 2 1 Open and sh...

Page 3: ...ot Smith diagrams etc make RigExpert AA 170 attractive for professionals and hobbyists The following tasks are easily accomplished by using this analyzer Rapid check out of an antenna Tuning an antenn...

Page 4: ...armonics are used Output power about 10 dBm at 50 Ohm load Power Three 1 5V alcaline batteries type AA Three 1 2V 1800 2700 mA h Ni MH batteries type AA Max 3 hours of continuous measurement max 2 day...

Page 5: ...analyzer Do not connect it to your antenna if you have active transmitters nearby Avoid static discharge while connecting a cable to the analyzer It is recommended to ground the cable before connectin...

Page 6: ...apters recommended for this type of batteries Any leaks of electrolyte from the batteries may seriously damage the analyzer Remove batteries if the analyzer is not being used for a long period of time...

Page 7: ...discharge level When the battery voltage is too low this indicator starts flashing The USB icon is displayed when the analyzer is plugged to a personal computer or to a DC adapter with USB socket Rig...

Page 8: ...a icon in the top right corner indicates when the measurement is started Pressing the 1 key will show a list of other commands 4 4 2 MultiSWR mode RigExpert AA 170 has an ability to display SWR for up...

Page 9: ...mode you may choose either series or parallel model of impedance of a load through the Settings menu In the series model impedance is expressed as resistance and reactance connected in series In the p...

Page 10: ...so you may use this function to set the whole frequency range supported by the analyzer Press the 1 key to access a list of additional commands for this mode 4 5 2 R X graph In the R X graph mode pres...

Page 11: ...he plots from the specified memory Additionally the F 9 combination opens the editor of memory slot names 4 6 Settings menu The Settings menu press the 0 key in the Main menu contains various settings...

Page 12: ...e third page of settings which contains various test commands used for fast checking of the entire analyzer 2 RF bridge test With no load at the antenna connector the display should look like shown on...

Page 13: ...urve should stay between the horizontal dotted lines The vertical lines are the bounds of analyzer s subbands 4 bandpass filter frequency response graph With no load at the antenna connector the displ...

Page 14: ...nected to a personal computer for displaying measurement results on its screen taking screen shots of the LCD as well as for updating the firmware A conventional USB cable may be used for this purpose...

Page 15: ...s 7 1 MHz The SWR at this frequency is about 1 1 which is acceptable The next screen shot shows SWR graph of a simple dipole antenna with a desired operating frequency of 14 1 MHz The actual resonant...

Page 16: ...nd short circuited cables Open circuited cable 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 wh...

Page 17: ...c constant and the velocity factor of the particular type of cable find the speed of electromagnetic wave in this cable Example 299 792 458 0 66 197 863 022 meters per second or 983 571 056 0 66 649 1...

Page 18: ...ncy then multiply by the resonant frequency in Hz Example 10 09 1 4 4 835 000 195 140 600 meters per second or 33 10 1 4 4 835 000 640 154 000 feet per second 3 Finally find the velocity factor Just d...

Page 19: ...2 458 28 200 000 0 66 1 4 1 75 meters or 983 571 056 28 200 000 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...

Page 20: ...ue of this resistor is not important However 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...

Page 21: ...s they may be successfully used to measure parameters of other RF elements 5 3 1 Capacitors and inductors Analyzers can measure capacitance from a few pF to about 0 1 F as well as inductance from a fe...

Page 22: ...e secondary coil for 1 1 transformers 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 3 3 T...

Page 23: ...AA 170 has rectangular waveform and level of about 10 dBm at the 50 Ohm load Therefore this analyzer can be used as a source of RF signal for various purposes For frequencies up to 30 MHz first harmon...

Page 24: ...24 Copyright 2007 2013 Rig Expert Ukraine Ltd http www rigexpert com RigExpert is a registered trademark of Rig Expert Ukraine Ltd Printed in Ukraine 15 Jan 2013 firmware ver 201...

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