Manufacturer: RigExpert Ukraine
Availability: IN STOCK
Warranty: 2 years
RigExpert AA-1400 is a powerful antenna analyzer designed for testing, checking, tuning or repairing antennas and antenna feedlines.
Graphical SWR (Standing Wave Ratio) and impedance, as well as Smith/polar chart displays are key features of this analyzer which significantly reduce the time required to adjust an antenna.
Easy-to-use measurement modes, as well as additional features such as connection to a personal computer make RigExpert AA-1400 attractive for professionals and hobbyists.
The following tasks are easily accomplished by using RigExpert AA-1400:
For the latest software updates, please refer to the manufacturer’s website
The following items are included with each RigExpert AA-1400 order:
Certifications: RCM (C-Tick), CE, FCC
Frequency range: 0.1 to 1400 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 easily-readable bar
R and X range: 0…10000, -10000…10000 in numerical mode, 0…1000, -1000…1000 in graph mode
Optional open-short-load calibration in SWR, R,X or Smith chart graph modes.
Dimensions: 22•10•5.5 cm
Operating temperature: 0…40 °C
Main menu (page 1)
Main menu (page 2)
Help screen for one of measurement modes
MultiSWR mode – numerical values
MultiSWR mode – bars
“Show all” mode
Data at cursor screen
Save to memory screen
Edit memory screen
Time Domain Reflectometer graph
Settings screen (page 1)
The screenshots listed below illustrate how capable this program is when the analyzer is connected to a PC.
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):
The structure diagram of the RigExpert AA-1400 Antenna Analyzer is located below:
The “brain” of the analyzer is Atmel 8-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 rectangular signals with LVDS levels. Resistive bridge 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 2 kHz. A variable attenuator is used to maintain the audio signal level in the desired range. This signal is then filtered and fed through the 16-bit ADC to the microcontroller. There is a simple relationship between the measurement frequency, DDS frequencies and attenuator division ratio:
|Subband||Measurement frequency||DDS1 frequency||DDS2 frequency||Harmonic number||Attenuator ratio|
|1||0.1 … 200 MHz||0.1 … 200 MHz||DDS1 + 2 kHz||1||/25|
|2||200 … 600 MHz||67 … 200 MHz||DDS1 + 667 Hz||3||/3|
|3||600 … 1000 MHz||120 … 200 MHz||DDS1 + 400 Hz||5||/1|
|4||1000 … 1400 MHz||142 … 200 MHz||DDS1 + 286 Hz||7||*2|
The 320×240 colour TFT display and the 6×3 keys keypad are connected directly to the CPU. The analyzer is equipped with 128K of external Flash memory to store measurement results, as well as with 32K of the fast external FRAM. The USB interface chip allows connecting the analyzer to the PC.
This is a diagram of the resistive bridge and its connection to the detector:
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.
|Function||AA-30 .ZERO||AA-30||AA-35 ZOOM||AA-54||AA-55 ZOOM||AA-170||AA-230 ZOOM||AA-600||AA-1000||AA-1400|
|Frequency range||0.06-30 MHz||0.1-30 MHz||0.06-35 MHz||0.1-54 MHz||0.06-55 MHz||0.1-170 MHz||0.1-230 MHz||0.1-600 MH||0.1-1000 MHz||0.1-1400 MHz|
|Frequency entry step size||1 Hz||1 kHz|
|Min. sweep range||100 Hz||10 kHz|
|Reactance sign measurement||+|
|Antenna connector type||SMA||UHF (SO-239)||type N|
|Output power||+13 dBm||-10 dBm|
|Output amplifier||CMOS logic chip|
|Output signal shape||square|
|Reference impedance for SWR measurement||25, 50, 75, 100 Ohm||50, 75 Ohm||25, 50, 75, 100 Ohm||50, 75 Ohm||25, 50, 75, 100 Ohm||50, 75 Ohm||25, 50, 75, 100 Ohm|
|Batteries||–||two AA||three AA||four AAA||three AA|
|Battery voltage sensor||–||+|
|Operation with external power supply (without battery)||Ext. 5V||from USB|
|LCD||–||Monochrome, 128×64||Color TFT, 320×240||Monochrome, 128×64||Color TFT, 320×240||Monochrome, 128×64||Color TFT, 290×220||Color TFT, 320×240|
|Time Domain Reflectometer mode||– *||Built-in|
|Flash memory for storing graphs||–||10 memory slots||100 memory slots||10 memory slots||100 memory slots||90 R/X or SWR memory slots, 10 TDR memory slots|
|Multilingual support||English 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.