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RigExpert AA-230 ZOOM

RigExpert AA-230 ZOOM

Price: $615.00

Model: AA-230-ZOOM
Manufacturer: RigExpert Ukraine
Warranty: 2 years

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RigExpert AA-230 ZOOM – Antenna and Cable Analyzer (100 kHz to 230 MHz)

The analyzer is designed for measuring SWR (Standing Wave Ratio), Return Loss, Cable Loss, of cable and antenna systems from 100 kHz to 230 MHz.

A built-in ZOOM capability makes graphical measurements especially effective.

An integrated Time Domain Reflectometer mode can be used to locate the precise location of a fault within the feedline system.

The following tasks are easily accomplished by using this analyzer:

  • Rapid check-out of an antenna
  • Tuning an antenna to resonance
  • Comparing characteristics of an antenna before and after specific event (rain, hurricane, etc.)
  • Making coaxial stubs or measuring their parameters
  • Cable testing and fault location, measuring cable loss and characteristic impedance
  • Measuring capacitance or inductance of reactive loads
  • Certifications: RCM (C-Tick),CE,FCC

RigExpert AA-230 ZOOM

Frequency range: 0.1 to 230 MHz

Frequency entry: 1 kHz resolution

Measurement for 25, 50, 75 and 100-Ohm systems

SWR measurement range: 1 to 100 in numerical mode, 1 to 10 in graph mode

SWR display: numerical or analog indicator

R and X range: 0…10000, -10000…10000 in numerical mode, 0…1000, -1000…1000 in graph mode

Display modes:

  • SWR at single or multiple frequencies
  • SWR, return loss, R, X, Z, L, C at single frequency
  • SWR chart, 20 to 500 points
  • R, X chart, 20 to 500 points
  • Smith chart, 20 to 500 points
  • Return loss chart, 20 to 500 points
  • TDR (Time Domain Reflectometer) chart
  • Cable tools (loss and characteristic impedance)

Optional open-short-load calibration.

RF output:

  • Connector type: N
  • Output signal shape: square
  • Output power: -10 dBm (at 50 Ohm load)

Power:

  • Four 1.5V alkaline batteries, type AAA
  • Four 1.2V Ni-MH batteries, type AAA *
  • Max. 4 hours of continuous measurement, max. 2 days in stand-by mode when fully charged batteries are used
  • When the analyzer is connected to a PC or a DC adapter with USB socket, it takes power from these sources

Interface:

  • 290×220 color TFT display
  • 6×3 keys on the water-proof keypad
  • Multilingual menus and help screens
  • USB connection to a personal computer

Dimensions: 82 mm x 182 mm x 32 mm (3.2 in x 7.2 in x 1.3 in)

Operating temperature: 0…40 °C (32…104 °F)

Weight: 236 g (8.32 oz)

Warranty: 2 years

RigExpert AA-230 ZOOM is made in Ukraine.

Specifications are subject to change without notice.

Screen Shots

RigExpert AA-230 ZOOM screenshots

 

RigExpert AA-230 ZOOM screenshots

AntScope software

AntScope is a program which is shipped with every RigExpert antenna analyzer. You may also download the latest version from the Downloads page of the RigExpert website (the program is included in installation CD packages). The screenshots listed below illustrate how capable this program is when the analyzer is connected to a PC. SWR (Standing Wave Ratio) plot:

Phase display:

R (resistance), X (reactance) and Z (module of impedance) display, series mode:

R (resistance), X (reactance) and Z (module of impedance) display, parallel mode:

Time Domain Reflectometer mode (except AA-500 and AA-520):

Smith chart:

Structure diagram

The structure diagram of RigExpert AA-230 ZOOM is located below:

sd-230z-en-1

The “brain” of the analyzer is STM 32-bit RISC microcontroller. It controls a AD9958 DDS chip running at 500 MHz and generating two sinusoidal signals. Both signals are low-pass filtered and then put through pulse shapers, producing two square signals with LVDS levels. Resistive brigde was chosen to measure parameters of a load because of its simplicity and good frequency response. The switch commutates two outputs of the bridge. After the switch, the signal is mixed with the second channel output to produce audio frequency of 1.5 kHz.This signal is then filtered and fed through the 16-bit ADC to the microcontroller. The 290×220 color TFT display and the 6×3 keys keypad are connected directly to the CPU. The analyzer is equipped with 4 Mbytes of external Flash memory to store measurement results. The USB interface chip allows connecting the analyzer to the PC.

Close look at the bridge

This is a diagram of the resistive bridge and its connection to the mixer:

bridge-230z-en-1

The switch which is controlled by the CPU feeds the signal from the certain side of the bridge to the mixer chip. When the load is totally active and its resistance is 50 Ω, the bridge is balanced and the switch outputs the same signal in both positions. This eliminates the need of calibration of the analyzer, also giving very good precision near SWR=1.

Comparison table of RigExpert antenna analyzers

FunctionAA-30 .ZEROAA-30AA-35 ZOOMAA-54AA-55 ZOOMAA-170AA-230 ZOOMAA-600AA-1000AA-1400
Frequency range0.06-30 MHz0.1-30 MHz0.06-35 MHz0.1-54 MHz0.06-55 MHz0.1-170 MHz0.1-230 MHz0.1-600 MH0.1-1000 MHz0.1-1400 MHz
Frequency entry step size1 Hz1 kHz
Min. sweep range100 Hz10 kHz
SWR2AIR™ mode+++
MultiSWR™ mode+
Reactance sign measurement+
Antenna connector typeSMAUHF (SO-239)type N
Output power+13 dBm-10 dBm
Output amplifierCMOS logic chip
Output signal shapesquare
Reference impedance for SWR measurement25, 50, 75, 100 Ohm50, 75 Ohm25, 50, 75, 100 Ohm50, 75 Ohm25, 50, 75, 100 Ohm50, 75 Ohm25, 50, 75, 100 Ohm
Analog-to-digital converter10-bit12-bit10-bit12-bit10-bit16-bit
Batteriestwo AAthree AAfour AAAthree AA
Battery voltage sensor+
Operation with external power supply (without battery)Ext. 5Vfrom USB
LCDMonochrome, 128×64Color TFT, 320×240Monochrome, 128×64Color TFT, 320×240Monochrome, 128×64Color TFT, 290×220Color TFT, 320×240
Time Domain Reflectometer mode– *Built-in
Flash memory for storing graphs10 memory slots100 memory slots10 memory slots100 memory slots90 R/X or SWR memory slots, 10 TDR memory slots
Multilingual supportEnglish only+
Presets for radio amateur bands+

Make sure the latest firmware is uploaded to the analyzer. See the Downloads section.

* The AntScope software is able to plot graphs in Time Domain Reflectometer (TDR) mode when AA-30/AA-54/AA-170 is connected to the computer. Since the resolution of the TDR graph is proportional to the maximum operating frequency of an analyzer, much better results are obtained by using AA-230 ZOOM, AA-600, AA-1000 or AA-1400.

RigExpert AA-230 ZOOM

Q: The output RF level at the antenna connector of the AA-230 ZOOM is -10 dBm, which is quite low compared to many other instruments. Does it mean the analyzer will not operate properly with long cables?

A: No, the AA-230 ZOOM will work fine with long (hundreds of meters) cables. The analyzer has a very sensitive, narrow band input, so -10 dBm is much enough for accurate measurements, even after loosing a few decibels in a long cable.

Q: The specs say the AA-230 ZOOM has a square wave output, which means there are several frequency components (harmonics) in such a signal. Then, how the SWR and other parameters of my antenna are measured at a specific, single frequency?

A: Please look at the structure diagram of the analyzer. The instrument filters out all unnecessary frequency components, thanks to the very narrow band (several hundred Hz) filter.

Q: Is the AA-230 ZOOM sensitive to nearby repeaters or broadcast transmitters?

A: No, unless a high-power transmitter is operating closely at the same frequency you are trying to use the analyzer at.

Q: Can I charge Ni-MH batteries inside the analyzer?

A: No, please remove batteries from the analyzer and use a separate charger.

Q: Can I use Lithium-Ion batteries instead of alkaline or Ni-MH ones?

A: Most likely, you will burn the analyzer. Lithium-Ion batteries have an output voltage of about 3.7 V each: compare to 1.2 V for Ni-MH and 1.5 V for alkaline ones.

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