AA-55 ZOOM Option Bluetooth

AA-55 ZOOM Option Bluetooth

Your lab in a field

We implanted Bluetooth technology into the antenna analyzer and opened up new applications for this popular device. Now, thanks to its ability to work in conjunction with a smartphone or the tablet/netbook, the new RigExpert AA-55 ZOOM Option Bluetooth antenna analyzer is your laboratory in a field. Download and install the Android application for your smartphone/tablet or AntScope2 for your netbook to:
  • operate the analyzer remotely
  • galvanically isolate the analyzer from the computer device
  • see the characteristics of your antenna in more detail
  • locate cable faults in TDR mode
  • share measurement results through social networks.

AA-55 ZOOM Option Bluetooth

AA-55 ZOOM Option Bluetooth
Frequency range
  • 0.06 to 55 MHz
Frequency entry
  • 1 kHz resolution
SWR measurement range
  • 1 to 10 in chart modes
  • 1 to 100 in numerical modes
R and X range
  • 0…1000, -1000…1000 in chart modes
  • 0…10000, -10000…10000 in numerical modes
Display modes
  • Cable tools (loss and characteristic impedance)
  • R, X graph, 100 points
  • Return loss chart, 100 points
  • Smith chart, 100 points
  • SWR at single or multiple frequencies
  • SWR graph, 100 points
  • SWR, return loss, R, X, Z, L, C at single frequency
RF output
  • Connector type: UHF (SO-239)
  • Output power: +13 dBm (at 50 Ohm load)
  • Output signal shape: square, 0.06 to 55 MHz
  • Max. 4 hours of continuous measurement, max. 2 days in standby mode when fully charged batteries are used
  • Two 1.2V Ni-MH batteries, type AA
  • Two 1.5V alkaline batteries, type AA
  • When the analyzer is connected to a PC or a DC adapter with USB socket, it takes power from these sources
  • 320×240 color TFT display
  • 6x3 keys on the water-proof keypad
  • Multilingual menus and help screens
  • USB connection to a personal computer
  • 103 mm x 207 mm x 37 mm (4.1 in x 8.1 in x 1.4 in)
Operating temperature
  • 0…40 °C (32…104 °F)
  • 310 g (10.9 Oz) w/o batteries
Accessories inside the box
  • Alkaline batteries
  • CD with drivers and software
  • RigExpert AA-55 ZOOM Option Bluetooth
  • Soft case
  • USB cable
  • User’s manual
  • 4820185420204
  • Specifications are subject to change without notice
  • Мade in Ukraine

RigExpert AA-55 ZOOM Option Bluetooth. How it works?

Structure diagram

The structure diagram of RigExpert AA-55 ZOOM Option Bluetooth is located below:how-it-works

The “brain” of the analyzer is STM 32-bit RISC microcontroller. It controls a Si5351 PLL 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 CMOS 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 on the 12-bit ADC of the microcontroller. The 320×240 color TFT display and the 6×3 keys keypad are connected directly to the CPU. The USB interface 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:

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.