10 best realtime spectrum analyzers

• 【MINI BODY,BIG USE】：The Elikliv S-A-A-2 NanoVNA V2 is only 2.8 inch screen,it's compact and small to carry on.But it has an advanced configuration,such as it add wifi,GPS,blutooth function when you connect the computer.
• 【UPGRADE FREQ 50KHz -3GHz】:It has more superior frequency than other nanovna,the 50K-1500MHz frequency range provides better than 70dB dynamic, and the extended 150M-3000MHz band provides better than 60dB of dynamics.
• 【COMPATIBLE WINDOWS SYSTEM】The Nanovna V2 could connect windows computer,after you download the software VNA-QT or Nanovna Saver,it can display on bigger screen.
• 【METAL SHIELD DESIGN】With the useful function,it can improve data accuracy.Built-in 1950mAh battery,it has a longer use time, and it supply by USB.
• 【WITH TEST BOARD KIT】It's convenient for you to test the nanovna.And it also suitable for other nanovna.SMD electronic components have been soldered.

Product description

USB real time Spectrum analyzer, 9 kHz – 6. 2 GHz, 40 MHz acquisition bandwidth.

• Portable – USB spectrum analyzer ready to connect to a PC with USB 3. 0
• Improved Dynamic range (reduced spurious)
• Customizable – configure RSA306B + signalvu-pc for internet of things, interference hunting or education
• Affordable – less than half the cost of a conventional unit, Plus free signalvu-pc signal analysis software

Product features

USB Real-Time Portable Spectrum Analyzers

The Tektronix USB real-time portable spectrum analyzers are powered by your laptop or tablet using SignalVu-PC vector analysis software - the same software used on the full-line of Tektronix real-time spectrum analyzers. You get access to advanced measurements and analysis capabilities with 15 packages that cover common wireless standards including spectrum management, pulse management and more.

Managing the PC separately from the acquisition hardware makes processing upgrades easy and helps to make the Tektronix RSA Series affordable and portable and suitable for many different application.

RSA306B Real-Time Spectrum Analyzer

Compact and portable, the RSA306B USB spectrum analyzer is hardworking both in the field and the lab.

RSA503A and RSA507A Real-Time Spectrum Analyzers

Real-time situational awareness in a rugged, portable form factor. Ideal for scanning, analyzing and recording radio signals where and when you need to.

RSA603A and RSA607A Real-Time Spectrum Analyzers

High fidelity in a compact size, ideal for small cramped labs or production lines, the RSA600 series provides capture, identify and analysis capabilities using the power of your PC.

Spectrum monitoring and interference hunting

Mobile communications are creating a complex and crowded signal environment with unprecedented spectrum capacity pressure. Tektronix’ Real-time Spectrum Analyzers help you discover and examine sources of interference quickly, so you can locate and identify unwanted activity.

EMI/EMC pre-compliance testing

Perform pre-compliance testing in your lab or on location using peak detection with a free version of SignalVu-PC. Pass compliance the first time.

Perfect for RF education

Your students can capture results from experiments, perform analysis and generate lab reports on their laptops increasing ease and utilization of your equipment.

Production testing

The USB RSA’s are a great choice for manufacturers looking for greater throughput and product quality, all while controlling testing costs. The RSA 306B, 500, and 600 units offer support for major Internet of Things (IoT) standards in SignalVu-PC software, come with a complete offering of drivers and code examples, and include testing support for IoT technologies such as WiFi and the new Bluetooth 5.0.

Product description

TrueRTA is available in 3 levels that provide 1/3rd, 1/6th and 1/24th octave real time analysis of audio signals. This is the 1/24th octave (Level 4) version of TrueRTA. TrueRTA’s audio spectrum analyzer software shows you a detailed picture of what you’re hearing in real-time, that is, as it happens. You can create your own professional measurement system starting with TrueRTA software on your PC. Then add the measurement microphone, preamp and USB interface of your choice. TrueRTA accurately tests audio systems using a Windows PC with basic sound capability. TrueRTA turns your PC into a powerful audio test system normally seen only in better audio research and design laboratories. TrueRTA applications: Measure the in-room frequency response of a loudspeaker system using either pink noise or Quick Sweep. Save measurements in up to 20 memories for later recall and overlay comparison. Combine individual loudspeaker measurements into a spatial average frequency response measurement. Observe the frequency characteristics of music, sound, or noise in real time. Study the noise characteristics of acoustic environments or electronic gear. Observe the frequency characteristics of recorded music or other recorded audio. Make high resolution measurements the frequency response of various types of audio equipment. Analyze the distortion characteristics of audio equipment. Use as a voice and music learning aid. Study the harmonic structure of musical instruments.

• High-Resolution Real Time Analyzer
• Low distortion Signal Generator
• Dual Trace Oscilloscope
• Digital Level Meter (millivolts, dB SPL, dBu)
• Crest Factor Meter (dB, V/V)

User questions & answers

Question:	I am a ham radio operator and would like to know if this analyzer will show the frequency response of a transmitted signal and of a received signal
Answer:	This is a Audio analyzer, not an RF analyzer. It normally operates in the 20Hz to 20kHz range, but will go as low as 10Hz and as high as 50kHz.
Question:	Can I use any type of recording/condenser/dynamic mic through a preamp to have proper results or does it need to be an rta mic
Answer:	You can use any mic you can connect to your PC and Windows. Even the built-in mic will suffice for the most basic testing. For example, if you want to know the body resonance of an acoustic guitar just tap the top of the guitar in front of the mic and you can identify the frequency of the body resonance (usually close to 100 Hz). In general, the best mic would be a measurement microphone such as those available here on Amazon from Dayton Audio, Behringer and others. jlm
Question:	can this device be used to display the the harmonics of a piano string for evaluations of the tone quality of the piano
Answer:	Yes! TrueRTA excels at this type of musical analysis and (Level 4) will clearly display individual harmonics of the piano any other musical instrument. Beyond that is is also used to analyze noise signatures of commercial jet engines to diagnose impending failure. jlm
Question:	Does this software read peak spl or avg spl
Answer:	TrueRTA can read both peak and average SPL (sound pressure level).

Product description

1.5 GHz Real-Time Spectrum Analyzer w/10MHz RTBW - VNA Capable

• Vector Network Analysis Mode Included (S11,S21,DTF)
• Swept and Real-Time Modes included
• 10 MHz Standard Real-Time Bandwidht
• EMI PreCompliance Mode Optional
• USB, HDMI, and Ethernet Connectivity

Product description

Key Operation:

M (short press) --- mode switching

▲ (short press) --- increase brightness

▼ (short press) --- decrease brightness

(recommended brightness value 2-4)



M (keep pressing) + ▲ (short press) --- increase spectrum speed

M (keep pressing) + ▼ (short press) --- decrease spectrum speed

(recommended speed 3-4)



▲ (long press) --- switch between LIN (line input) and MIC (microphone input)

▼ (long press) --- switch between L (low gain) and H (high gain) (the best is L by default, can choose H for car spectrum MIC input)



NOTE: the setting values need to maintain 30 seconds before they can be automatically saved.





Connection:

Audio terminal input adopts 3.5mm male headphones, connect it to computer headphone output interface via the audio branch, the other end of the branch connects external audio equipment. Please check whether the audio cable or branch has good contact if the audio has noise or the spectrum has background noise under mute and MIC off mode when using.





Potentiometer Function:

Input adjustment potentiometer: for adjusting the input signal, for example, the input signal can be attenuated if it is too strong, or adjust this potentiometer to shield some equipment which have strong background noise. Spectrum display amplitude potentiometer: for adjusting the maximum display amplitude after AGC (Automatic Gain) process. After setting, the automatic gain will take this setting value as the maximum amplitude to adjust automatically.(turning to the end can turn off AGC function if you don't need it)





Package Includes:

1× AS1424 Music Spectrum

1× USB Cable

1× 3.5mm Male to 2*Female Plug

• The Douk audio spectrum AS1424 has 24 frequency bands, adopts 32-bit high-speed processor and professional Pure hardware agc (automatic gain control) module that can capture every detail of the music and display, available for frequency point test, has excellent visual effect and high accuracy. Color: White / Black; Size: 18.5 x 9 x 1.2cm
• Three kinds of classic modes: single spectrum, spectrum + peak holding, floating point, with power off memory; L (low gain) and H (high gain) 2 -level gain available; 5-level adjustable Brightness, the Brightness value with power off memory; 5-level adjustable spectrum speed they all can be adjusted by Key
• Two kinds of signal acquisition modes: mic (electret condenser microphone) and LIN (line input); there are two potentiometers, audio spectrum analyser display Amplitude and input adjustment potentiometers, the spectrum display Amplitude and input signal can be adjusted by them
• Powered by USB DC 5V, all devices with USB interface can power up the color spectrum, including computers, Cell phone chargers, mobile power, etc please do NOT use counterfeit phone chargers, unstable power supply or other power supplies which have large ripple, or it will cause damage to the handheld sound spectrum analyser
• With high sensitive built-in mic, can be used on car music spectrum and radio music monitoring auxiliary equipment when it is used as car audio spectrum analyser, there is No electrical wiring required, only need to connect USB DC 5V power supply and don't need to connect audio

User questions & answers

Question:	How to install nobsound 1424 to my sterio
Answer:	Connect using 3.5mm male plugs and whatever output type your stereo has for headphone jack. I believe it also had a built in microphone.
Question:	What connections does it have audio signals to be received
Answer:	The spectrum analyzer has a built-in microphone and a 1/4 inch headphone jack.
Question:	Is assembly Required
Answer:	No but specific leads are required to connect to audio system - sure it would work fine with a PC or Laptop
Question:	How does this work? Do you just plug it in and play music or audio and it picks it up,and displays ,im not getting it
Answer:	I used it to add to a hi fi system - the leads supplied did not connect to a hi fi audio output and required a converter which can easily be obtainend

Product description

8 Kinds of Classic Display Modes:

Mode 1: Columnar mode

Mode 2: Columnar with peak holding mode

Mode 3: Columnar with peak, peak upward moving out mode

Mode 4: Mirror mode, from middle to both sides

Mode 5: Single point mode

Mode 6: Peak upward moving out mode

Mode 7: Single peak mode

Mode 8: Mute with all lights on mode(available for testing LED)

 

Instructions:

1. Please insert the attached connector USB terminal to your computer USB interface, 3.5mm headphones by audio branch

into the computer or other device's headphone output jack, the other end of the branch connects audio equipment;

2. Gain description: 1-3 levels are gain attenuation, 4 level is 0 gain, 5-6 levels are gain amplification.

Please adjust input volume and gain to make the display amplitude at an appropriate range (default value 3);

3. If happened to full screen display, please reduce the gain or input volume; if the display still dances

when no sound source input, please replace the power supply to test or use computer USB terminal as power supply;

4. If the audio input terminal needs to be connected to amplifier output or speakers, please use capacitor and potentiometer

to attenuate the signal, and please make sure that the audio signal input voltage should be within 5V,

or the sound spectrum analyzer will be damaged.

 

Note:

Please do not use counterfeit phone chargers, unstable power supply or other power supplies which have large ripple,

or it will cause background noise or damage to the audio analyzer.

 

Package Includes:

1x Music Spectrum VU Tower

• The music visualizer spectrum has innovative design and perfect combination of music and art, suitable for both music and electronic enthusiasts. Please make sure that the audio signal input voltage should be within 5V, or the sound spectrum will be damaged.
• High-speed signal acquisition and accurate response: Adopts 32M crystal and 1T microcontroller, the color spectrum has high-speed signal acquisition and accurate response.
• Excellent Visual Effects: 16 segment, golden section ratio design and red, yellow, green, blue, orange, pink 6-color LEDs makes great visual effect. It is also a delightful & beautiful art decoration.
• 8 kinds of classic display modes: 1. Columnar mode; 2. Columnar with peak holding mode; 3. Columnar with peak, peak upward moving out mode; 4. Mirror mode, from middle to both sides; 5. Single point mode; 6. Peak upward moving out mode; 7. Single peak mode; 8. Mute with all lights on mode(available for testing LED).
• Key Operation: Short press the key to switch among eight kinds of classic display modes; long press the key for 1 second to adjust among 6-level gains; long press the key for 3 seconds to switch between left and right channels. (Please adjust input volume and gain to make the display amplitude at an appropriate range (default value 3).)

User questions & answers

Question:	Can you plug this into the headphone output on a receiver to make it work
Answer:	Yes you can change the sound threshold for the alarm.
Question:	Does this connect to a sound bar
Answer:	Yes, you can
Question:	On/off switch broke off, where can i find replacement or warranty info
Answer:	One outputs a DC voltage level in proportion to the measured signal and the other outputs an AC voltage level in proportion to the measured signal. This is useful for adding additional outboard equipment to get finer detail of the measured signal level and/or logging of the measured signal level over time.
Question:	Will it with Any audio output
Answer:	yes

Product description

Description:

With the big size LED music spectrum design, it can show the excellent effect of the sound wave. This spectrum uses general USB interface, DC 5V power supply. All USB interface equipments, including computers, mobile phone charger, mobile power supply, etc., can provide power to the LED spectrum. Great DIY audio spectrum gives you an unprecedented listening enjoyment!



Features:

Great DIY kit for electronic enthusiasts in electronic applications.

5V USB power supply and 3.5mm audio signal input.

8.5cm x 23cm big size spectrum sound waves display screen.

384 pcs LEDs bring you the amazing music spectrum sound waves beating effect.

With clock function, can be used a clock, can display date, time and week.



Specifications:

Power Supply: 5V USB

Audio Signal Input: 3.5mm / 0.14in

Board Size: 8.5 * 23cm / 3.3 * 0.9inch

Material: Acrylic

Package Weight: 300g



Package List:

1 x DIY LED Digital Music Spectrum Set Kit with Shell and Some Screws

1 x 2-in-1 Audio + USB Cable

• Great DIY kit for electronic enthusiasts in electronic applications.
• 5V USB power supply and 3.5mm audio signal input.
• 8.5cm x 23cm big size spectrum sound waves display screen.
• 384 pcs LEDs bring you the amazing music spectrum sound waves beating effect.
• With clock function, can be used a clock, can display date, time and week.

Product description

Specific operation:

Normal mode:

1. Single click

UP - Mode change

DOWN- Mode change

OK- Bottom line display or no in spectrum mode

2. Double-click

OK- Switching real / smooth I/ smooth II output

3. Three-click

OK - Menu effect switch, right -left transition / up - down transition / mid folding open

4. Four-click

OK- Volume display function on or off

5. Five-click

OK - Switch the extended port output level, high or low level

6. Composite key

UP+DOWN-2 Seconds

A.（In the spectrum mode)

The external ports are switched on or off (including infrared interface, audio source selection interface, volume motor control interface, volume key interface, standby control interface).

B.（In the clock mode )

Switch the clock display effect.

UP+DOWN+OK -2 Seconds，Enter the screen self-test program, press the OK button 1 second to exit.

UP+DOWN+OK -5 Seconds，Enter infrared learning function, press OK button to exit in 1 second

UP+DOWN+OK -10 Seconds，Infrared code recovery factory settings (the default is Tmall infrared remote control).

7. Long press button

UP - Clock mode（or standby mode）Brightness increase

(Note, if you need to increase to the brightest level, press for about 10 seconds, if the standby brightness is too high, it will cause uneven of VFD, the highest brightness level is not recommended).

DOWN -Clock mode（or standby mode）Brightness reduction

Clock Setting mode :

Single click

OK- Switching hours / min / sec / year / month / day

UP - Hours / minutes / sec / year / month / day increase.

DOWN - Hours / min / sec / year / month / day decrease.

English manual:http://ae01.alicdn.com/kf/HTB1yXoVv29TBuNjy0Fcq6zeiFXak.jpg

Package included: 1 pc

• 1.Dedicated VFD spectrum display, Resolution 25 X 15.Support 32HZ-16KHZ frequency sweep , Ensure the accuracy of each band.
• 2.The falling speed of the light bar, the holding time and the falling speed of the peak can be adjusted separately.
• 3.Real output and smooth output I/ smooth output II selection,Clock brightness can be adjusted 3 levels. Extended function interface（Infrared, sound source selection, volume motor control, volume key, volume display, standby control）
• 4.Different colors of light alone provided a current limiting resistor. Guarantee a perfect match.
• 5.Accurate clock display function (This function is entered after 10 seconds without signal input and key operation）. （SD2405AL built-in crystal oscillator, the chip can ensure that the clock accuracy is + 5ppm (at 25 + 1 degrees Celsius), the annual error is less than 2.5 minutes.Note:if you don't know how to connecton it,pls tell us,we can send a youtobe video for you.

User questions & answers

Question:	How do I increase the volume display
Answer:	Good Morning, Thank you for your email. I am sorry, but Cole-Parmer is not able to ship orders where the ultimate destination for the products is outside of the United States. Thank you, Cole-Parmer
Question:	Where is this Made
Answer:	Thank you so much for your interest in our products. The 407032 model has a measurement bandwidth between 31.5Hz to 8KHz. Please check all the specifications of this meter here: http://www.extech.com/products/resources/407732_UM-en.pdf
Question:	Can you provide a link to purchase the usb to barrel connector? i want to get another so i can move this around easier
Answer:	You can adjust the following 4 things pertaining to the alarm: 1) what decibel level sets it off, 2) when triggered, how long does the alarm go off (defaults to 120 seconds, but you can adjust it down), 3) how loud the alarm should be when it goes off (it beeps kind of like an alarm clock - this controls how loud the beeping is), 4) you can turn the alarm feature on or off
Question:	Hi, can you make it using green amber and red color
Answer:	I can't remember if it came with cert, and am sure it can be calibrated, you just need someone who can read/understand Chinese. For what I use it for (live music) it keeps everyone on the same page/parameter (100db is the target). Perfect for me.

• [Impressive frequency range] – Scan and diagnose any frequency starting in low frequency 50KHz up to high frequency 6.1GHz, with no gaps or limitations. Offering this wide operating range, it can detect all WiFi, cell stations and phones, IoT, HAM bands, Digital radio and TV, ISM bands, Drone links and pretty much all wireless technologies used in todays demanding communications world.
• [Robust design and instant power up] – A fully armored metallic enclosure provides robust mechanical strength and the high quality baked varnished paint provides a unique glossy finish. The device is designed and manufactured to last many years of demanding usage in the field, with internal rechargeable Lithium battery for hours of continuous usage.
• [Advanced features] – Included advanced high-resolution Spectrum Analyzer mode, WiFi Analyzer mode, Tracking SNA. Internal firmware is continuously updated with additional features and functions to improve the device capabilities.
• [Free Computer software] - When connected to a Windows, Linux or Mac computer the analyzer can display advanced high resolution graphics, including Power Meter and Spectrum Analyzer real time charts, historical charts, save data to CSV files and export to other tools such as WW6 or MatLab, define markers and limit lines and much more. Free open source API and libraries are available to customize your own applications and services.
• [Tracking mode enabled] – When combined with RF Explorer Signal Generator the analyzer can perform full tracking SNA to define Gain, Attenuation and SWR for 1 and 2 port RF devices such as filters, amplifiers and antennas.

User questions & answers

Question:	Does this have a usb-c port
Answer:	Hello, unfortunitly this unit doesn't have a USB-C port. It comes with a Mini USB Cable. I hope that this helps.

Product description

Feature:



1. With a bright and easy-to-use color touch screen display, many functions can be used.

2. With miniature USB cable and two high quality BNC probes, the measurement is more convenient.

3. Dual-channel digital oscilloscope DIY suite, the maximum real-time sampling rate is 1MS/s.

4. The bandwidth of each channel is 0-200KHz, and the sensitivity range is 5mV/DIV-20V/DIV. The measurement is accurate and the reaction is sensitive.

5. It is small in size, light in weight and easy to carry with you. It is very suitable for field measuring instruments.





Specification:



Condition: 100% Brand New

Item Type: Oscilloscope Kit

Material: ABS

Type: 15801K

Channels: 2

Bandwidth: 0-200KHz Per Channel

Maximum Real-Time Sampling Rate: 1MS/s

Sensitivity Range: 5mV/DIV-20V/DIV (Using x1 Probe)

Maximum Input Voltage: 50Vpk (Using x1 Probe)

Time Base Range: 10us/DIV-500s/DIV

XY Display Function: Support

Function Generator Function: Built-In 0-20KHz (Sine) Dual Channel DDS Function Generator

Display Resolution: 320 x 240 Color Display

Display Screen Size: 2.4in

Touch Screen Function: Support







Package List:



1 x Display Screen

2 x Mainboards

1 x Housing

1 x USB Cable

1 x Line

1 x Leadwire

2 x Housing Suite

2 x BNC Probes

2 x Instruction Manuals

2 x Channels

5 x Pin Header

26 x Resistors

3 x Small Circuit Boards

10 x Small Screws

1 x Switch

1 x Terminal

1 x Plastic Knob

1 x 4 Hole Plastic Strip

• With a bright and easy-to-use color touch screen display, many functions can be used.
• With miniature USB cable and two high quality BNC probes, the measurement is more convenient.
• Dual-channel digital oscilloscope DIY suite, the maximum real-time sampling rate is 1MS/s.
• The bandwidth of each channel is 0-200KHz, and the sensitivity range is 5mV/DIV-20V/DIV. The measurement is accurate and the reaction is sensitive.
• It is small in size, light in weight and easy to carry with you. It is very suitable for field measuring instruments.

User questions & answers

Question:	can this be used for measuring high power car audio systems? or any car audio systems
Answer:	Yes for sure, it can be used for anything in the car, you can also install it permanently in the car for your audio display monitor, it looks good in the car.
Question:	Can the frequency sweep range be set? i am only interested in 50hz to 2,000hz, or is the range preset to 30hz to 20,000hz
Answer:	After looking at the manual and specifications, it appears you can't change the sweep range.
Question:	Is this available built or is this a kit
Answer:	Kit - not a hard build you should try it - works awesome !
Question:	What is the connection type? RCA, TRS, Firewire, USB, what
Answer:	Hi, the audio annalyser has a sk1- header connection area where you plug the 4 pin connector that comes with this unit. From there, you would need to solder the pins to the speakers....etc.pin 1 -GND - brownpin 2- +12 volts - redpin 3 - GND - orangepin 4 - SIGNAL