RigExpert AA-35 ZOOM User Manual Download Page 28

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“RigExpert” is a registered trademark of Rig Expert Ukraine Ltd.

Made in Ukraine

Doc. date: 05-Sep-2017

http://www.rigexpert.com

Summary of Contents for AA-35 ZOOM

Page 1: ...AA 35 ZOOM RigExpert User s manual Antenna and cable analyzer...

Page 2: ......

Page 3: ...ultifunctional keys Connecting to your antenna SWR chart Chart ZOOM Data screen Frequency and range entry R X chart Memory operation SWR mode Display all parameters Applications Antennas Coaxial lines...

Page 4: ...z to 35 MHz A built in ZOOM capability makes graphical measurements especially effective The following tasks are easily accomplished by using this analyzer Rapid check out of an antenna Tuning an ante...

Page 5: ...insert two AA batteries only alkaline or Ni MH ones into the battery compartment of the analyzer watching the polarity Instead you may power it from a spare USB port of your computer by using a conve...

Page 6: ...ctional key For the convenience alternative functions are marked with yellow You may press the Help key to open a help screen listing all active hot keys Connecting to your antenna Plug the cable to y...

Page 7: ...not forget to press the OK key for the new measurement to start SWR chart Once your antenna is connected to the analyzer it is time to measure its characteristics Press the SWR chart key to open the S...

Page 8: ...a load at cursor Frequency and range entry To enter the center frequency or the sweep range press the Frequency Range key Use cursor keys to navigate or the to keys to enter values Do not forget to pr...

Page 9: ...eactance X correspond to inductive load while negative values correspond to capacitive load The chart will display R and X for series or parallel models of a load Press Functional key and to switch be...

Page 10: ...s OK SWR mode To watch the SWR at a single frequency press the SWR key Do not forget to press the OK key to start or stop the measurement Change the frequency with Left or Right cursor keys or press t...

Page 11: ...ues of L or C This can be useful for experienced users This screen displays values for series as well as parallel models of impedance of a load 11 In the series model impedance is expressed as resista...

Page 12: ...rpose The picture on the left shows the SWR chart of a HF antenna The operating frequency is 14 3 MHz The SWR at this frequency is about 1 3 which is acceptable The next screen shot shows SWR chart of...

Page 13: ...ot work Instead you may use the SWR mode the All parameters mode or the Smith chart mode to continuously see the results while adjusting various parameters of the antenna Coaxial lines Open and short...

Page 14: ...ifferent velocity factor for instance for RG 58 it is 0 66 Notice that this parameter may vary depending on the manufacturing process and materials the cable is made of To measure the physical length...

Page 15: ...or 649 156 897 4 100 000 1 4 39 58 feet 3 Finally find the velocity factor Just divide the above speed by the electromagnetic constant Example 5 meters 16 4 feet of open circuited cable Resonant frequ...

Page 16: ...lt in a cable just use the same method as when measuring its length 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 circu...

Page 17: ...from the far end of the cable until the X value falls to zero or changes its sign Do not forget to restore the open circuit if needed 11 cm 0 36 ft were cut off 1 Calculate the physical length Divide...

Page 18: ...measure the characteristic impedance of a cable 1 Connect a non inductive resistor to the far end of the cable The exact value of this resistor is not important However it is recommended to use 50 to...

Page 19: ...o line Example 1 3 85 MHz min 8 25 MHz max Example 2 5 50 MHz max 2 75MHz min 4 Switch to the Data at cursor screen by pressing the Data key and find values of R at previously found frequencies Exampl...

Page 20: ...w pF to about 0 1 F as well as inductance from a few nH to about 100 H Since measuring of capacitance and inductance is not a main purpose of RigExpert analyzers the user will have to gain some experi...

Page 21: ...ere X is 25 100 Ohm for capacitors or 25 100 Ohm for inductors Change the scanning range and perform additional scans if needed Transformers RigExpert analyzers can also be used for checking RF transf...

Page 22: ...of a trap may be measured Example A coaxial trap constructed of 5 turns of TV cable coil diameter is 6 cm was measured A one turn coil about 10 cm in diameter connected to the analyzer was placed co...

Page 23: ...RigExpert AA 35 ZOOM 23...

Page 24: ...9 Output signal shape square 0 06 to 35 MHz Output power 13 dBm at 50 Ohm load Power Two 1 5V alkaline batteries type AA Two 1 2V Ni MH batteries type AA Max 4 hours of continuous measurement max 2 da...

Page 25: ...ctor of the 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 befo...

Page 26: ...ables or adapters are disconnected from the antenna connector of your analyzer then press OK to start the first test Detector test You should see the Passed message in case of success Continue with tw...

Page 27: ...edance 25 50 75 or 100 Ohm which affects SWR and return loss readings Units select metric meters or imperial feet units Bands select region for highlighting of radio amateur bands Cable vel factor cho...