Audio frequency counter

Audio Frequency Counter

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  • Displays count and frequency or time period
  • Graph of input signal, 2.5 ms/div up to 640 ms/div.
  • Gate time of 0.1s, 1s, 10s or 100s.
  • AC or DC coupling




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Gain Express VC3165 Radio Frequency Counter 0.01Hz2.4GHz w/BNC Test Leads, High Resolution Professional RF Signal Meter Tester, 8 Digits LED Display

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Description:

Frequency counter that measures signals over a wide range of 0.01Hz - 2.4GHz. Gate time that is continuously varying from 100ms-10s. All functions depend on a single CPU. It has a crystal-controlled temperature circuit that provides a constant compensation for temperature change, reduces the measurement errors.

Features
* Switch from 110V to 220V (vise versa)
* 5W max consumption

Specifications
8digit LED display
3step function selections
Channel B input has an attenuator(x1,x20)
AC/DC coupling for low-pass filter
2 Input Channels: Channel A for 0.01Hz-50MHz ; Channel B for 50MHz-2.4GHz
Channel A (0.01Hz to 50 MHz)
* Freq range: DC couple 0.01-100Hz ; AC couple 100Hz-50MHz
* Sensitivity: "DC" 0.01-1Hz = 500m Vp-p, 1-100Hz = 80m Vrms, "AC" 100Hz - 50mHz = 80m Vrms
* Input impedance: 1 M?
Channel B (50MHz - 2.4GHz)
* Freq: 50MHz - 2.4GHz
* Sensitivity: 50MHz-1.2GHz = 80m Vrms, 1.2-2.4GHz > 80m Vrms
* Coupling: AC only
* Input Impedance: 50?
Resolution depends on gate time control setting
Time base:
* Short time stability: 3 x 10-9/sec
* Long time stability: 2 x 10-8/month
* Temp drift coefficient: 1 x 10-7, 10-40C
* Line voltage variation: 1 x 10-7 for line voltage 10
Gate Time: Continuously variable from 100ms - 10s
Precision: standard time error (t) x frequency (f) 1d
Power: 110V and 220V
Preheat time: 20min
Operating environment: 0-50C, 10-90RH
Size and Weight: 270 x 215 x 100mm, approx. 1.6kg

Set includes
1 x Frequency Counter
1 x Power Cord
English User Manual
Test probe w/ BNC connector

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  • Channel B (50 MHz to 2.4 GHz) and Frequency : 50 MHz - 2.4 GHz with 8 digit LED display and Crystal-controlled temperature circuit
  • 2 Input Channels : Channel A for 0.01 Hz to 50 MHz ; Channel B for 50 MHz to 2.4 GHz
  • 3 steps function selection: work state, unit & 8-digit LED display and Frequency measurement 0.01Hz-2.4GHz
  • Channel A (0.01Hz to 50 MHz) and Frequency range : DC couple 0.01 Hz to 100 Hz ; AC couple 100 Hz to 50 MHz
  • Cyclic measurement range 0.5ms-10s
    * Attenuation of 20dB and input impedance of 1MO with Frequency, period, equal-precision measurement









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Texas Ranger SRA-166FB Frequency Counter Extension Speaker ( CB Radio / Amateur Radio )

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Description:

This SRA-166FB is a high quality speaker made of durable long lasting material with excellent audio output. Just plug it in the back of most transceiver radios ( with a PA Jack ). Frequency counter is a universal frequency counter. Designed for CB and Amateur radios with a frequency counter jack port on the device.

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  • 3" Inch Speaker 4 ohms
  • 15 Watt Max Power
  • Blue LED Light
  • 6.5 Foot Cord
  • 3.5mm Speaker Jack / 6 Pin Frequency Counter Plug

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Frequency Counter, RISEPRO Digital Bench Frequency Signal Meter with AC Power Cable BNC Test Leads 10Hz - 2.4 GHz VC3165

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Description:

Brief Description

This frequency counter measures signals over a wide range from 0.01 Hz to 2.4 GHz. The gate time is continuously varying from 100ms to 10s. The maximum power consumption is only 5W.

The instrument provides high performance stability and function at low cost. The counter can measure frequency, period and equal-precision. It is also featured with 3 step function selection, work state, unit and eight-digit LED display.

All functions in this frequency counter depend on a single CPU. A crystal-controlled temperature circuit provides a constant compensation for temperature change, thus reducing measurement errors typically caused by temperature drift. The Channel B (CH. B) input has an attenuator (x1, x20), AC/DC coupling for a low-pass filter.

One Set Included

  • 1 x Frequency Counter

  • 1 x Test probe with BNC type connector

  • 1 x Instruction Manual

  • Standard Factory Package

  • Buy audio frequency counter from Amazon.com
    • With 3 steps function selection: work state, unit & 8-digit LED display
    • Frequency measurement from 0.01 Hz to 2.4 GHz
    • Cyclic measuring range from 0.5 ms to 10 s
    • With attenuation of 20 dB and input impedance of 1 MO
    • With frequency, period and equal-precision measurement





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    Semoic FG-100 DDS Function Signal Generator Frequency Counter 1Hz - 500KHz

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    Description:

    Semoica legal trade mark, has been registered. Only those who are authorized are available to sell items under Semoic. Semoic will bring you joyful shopping experience. FG-100 DDS Function Signal Generator Frequency Counter 1Hz - 500KHz
    Maximum output amplitude: /- 10Vpp (no-load)
    Output impedance: 50Ohm/-10
    Dc bias: /- 10V (no-load)
    Display: LCD1602
    Resolution: 1 Hz
    Power supply: DC 3. 5-10V
    Output frequency range:
    Sine wave: 1Hz-500KHz
    Square-wave: 1 Hz - 20kHz (the valid range)
    Triangular wave: 1 Hz - 20KHz (the valid range)
    Sawtooth wave: 1 Hz - 20kHz (the valid range)
    colour: white
    Material: PC metal
    Package Contents:
    1 * FG-100 DDS Function Signal Generator
    1 * USB power adapter cable
    1 * English manual
    Only the above package content, other products are not included.
    Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is /- 1-3cm.

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    • Small size, multiple functions, simple operation, easy to carry.
    • With an oscilloscope, which can be used in electronic circuit experiment and debugging, the frequency characteristics of audio amplifier and pulse response of test and measurement.
    • Due to the good precision of DDS and frequency stability, is also very suitable for oscilloscope sweep time calibration factor. Square wave output also suit for oscilloscope attenuator and probe pulse adjustment, etc
    • The main output waveform: sine wave and square-wave, Triangular wave, sawtooth wave.





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    Victure 1080P FHD WiFi IP Camera Wireless 2.4 G WiFi Security Panoramic Viewing Camera with Motion Detection, 2-Way Audio, Night Vision, Home Surveillance Monitor for Baby/Pet/Elder

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    Description:

    Guarantee
    We stand behind the quality of our product and if for any reason it fails within the first 12 months of warranty we will replace it.
    If you have any questions, email customer service at [email protected] We ensure 100 satisfaction and we will do our best to resolve the problem.

    Connection tips
    1.Only support 2.4G wifi.if not sure about that,please disable 5G wifi.
    2.Public wifi and wifi extender are not supported
    3.The password of wifi should be less than 16 words and not contain special characters.
    4.There'd better no wall between camera and router.the distance should better less than 10m.
    5.If fail in connecting,please reset and try again when indicator flash red.

    Micro SD card tips
    1.32G-64G card at C10 is best
    2.Insert card when out of power
    3.Refresh setting information in the setting of menu

    Software tips
    1.App only support Android/IOS of phone
    2.PC software only support windows system

    Two way Audio tips
    1.Please turn on the ringtone of phone before using two way audio

    Camera placement tips
    1.Please don't place the camera outdoor or beside glass

    Specifications
    Size: 93*114.5 mm
    Application: iOS & Android
    TF card(NOT INCLUDE): 8-64G/C10
    Wide-angel: 90
    Resolution: 2 million pixels, 1920x1080(1080P)
    Infrared light: 850nm 10PCS, range up to 30 feet
    Night Vision: IR-CUT Filter will switch automatically
    WiFi LAN Frequency: 2.4GHz, WPA2 encryption, IEEE802.11b/g/n
    Functions: anti-noise, 2-way audio, night vision, motion detection

    Package
    1. Victure Wifi Camera*1
    2. Pan-tilt device*1
    3. Screw*2
    4. 4.92ft power cable*1
    5. Power plug*1
    6. User manual*1

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    • FHD-1080P-1920*1080 resolution, 6G lens, can produce crystal clear image quality. Only supports 2.4G WiFi signal,it can't supports 5G WiFi signal.
    • Fluent 2 Way Audio Anti Noise- Support remote real-time monitoring of Android, IOS and PC smart terminals. You can also talk to people near the camera while observing the situation in front of the camera.
    • Smart Motion Detection-While monitor movements, wifi camera will send notification to your mobile phone to prevent your home from invasion.
    • Advanced Night Vision-10 pcs 5mm IR LEDs extend the viewing distance up to 30 feet in the darkness to bring you a super night vision experience. Day and night surveillance, 24 hours to protect your home.
    • Micro SD Card Storage-Micro SD card storage supports up to 64GB(not included) at C10, Please format the card with app before using.








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    NSKI Mini Radio Frequency Meter With CTCSS/DCS Decoder or Handheld Portable Frequency Counter NSKI-560S Text Walkie Talkie

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    Description:

    Mini frequency counter:
    The said frequency counter can continually test the analog radio signal (handhold radio, wireless phone, etc) and digital radio signal, to display the frequency parameter with the signal strength. This is the best tools for the signal testing and radio maintenance.
    Frequency step : 200k (digital radio signal), 1k, 100Hz.
    Testing distance: UHF: 8m, VHF: 5m.
    Testing range: 100-520MHZ
    Antenna: fixed antenna
    Battery: 9V 6F22 (Internal 3.7 volt rechargeable battery)
    Auto power off time: 2 mins. (except for the digital signal gear)
    The charger: 5 volt

    Operation:
    the only one button with all functions.
    the 1st pressing to turn on
    welcoming--release the button return to powering off mode --continually pressing
    to choose the 200k step-release button , 200k mode for digital radio --continually pressing
    to choose the 1k step -- release button , 1k mode for faster testing --continually pressing
    to choose the 100Hz step - release button, 100Hz mode for accurate testing --continually pressing
    turned on (1k or 100Hz mode) turned on (200k mode)
    press quickly and release normal pressing
    to lock the screen display "Bye Bye"
    press quickly again and release release the button, then power off.
    unlock the screen
    continually pressing for 2 sec or more
    display "Bye Bye"
    release the button, then power off.

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    • Frenquency:100-520MHZ
    • CTCSS/DCS Decoder
    • Fits for 1-30W Radio
    • Quick Search, driving records,
    • Battery: 9V 6F22 (Internal 3.7 volt rechargeable battery)
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    Banglijian Hearing Amplifier Rechargeable Ziv-201 High Quality Digital BTE Small Size

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    Description:

    Our hearing amplifier is convenient and durable to wear. It runs with high quality rechargeable lithium battery, Its great battery runs around 20-24 hours continuously after fully charged. It can be charged via USB cable.

    Frequently Asked Questions

    Question one: Why there is the whistling sound?
    Answer:
    1. The ear plug is too small.
    2. The ear plug is not really inserted into the ear canal.
    3. The sound tube isn't connected tightly with the ear plug.
    4. The sound tube isn't connected tightly with the ear hook.
    Question two: Why there is noise?
    Answer:
    If you hear noise, it may be the sound of the current,
    which needs time to adapt to, please understand.
    If you increase the volume, the sound of current will also
    be increased more obviously like the sound of wind.
    If it still can not help, please try to switch the programs.

    Generally, it takes 20 -30 days to get used to the sound. Please try to adapt to it. If you cann't, our quality commitment is "3 months Hassle Free Return policy, 3 year on hassle warranty!".

    Warm prompt:
    When you first use this product, please charge the batter fully.
    Please turn off the power before assembling the hearing aid.

    Package Includes:
    1 Banglijian Hearing Amplifier
    1 Shockproof Case
    3 Ear Plugs (small, medium, large)
    1 Sound Tube (For a better customer experience, you will receive 2 more sound tubes)
    1 Cleaning Brush
    1 Power Adapter
    1 USB Cable ( Can use Power Bank-5V,1A output )
    1 User Manual

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    • EASY USE AND COMFORTABLE FEATURE: Our hearing amplifier designed by audiologist is easy, durable, and comfortable to wear in either of the ears. Note: This PSAP device is not recommended for individuals with severe or profound hearing problem, this item contains only one device.
    • RECHARGABLE FEATURE: Our hearing amplifier saves your trouble to buy button batteries frequently. And it is environmental-friendly.
    • EXCEPTIONAL FUNCTIONS: Our hearing amplifier has a full digital tone quality for low audio distortion and clearer voice. It also has a noise reduction feature that helps the user hear with maximum clarity. It's with full digital circuitry and adjustable volume control. There are two process choices for noisy and quiet environment, which is more efficient and practical.
    • GIFT DESIGN: Our hearing amplifier is offered with exquisite packaging and complete accessories. We provide the best storage protection.
    • QUALITY COMMITMENT: 3 months Hassle Free Return policy, 3-Year Manufacturer Warranty! Any questions, please contact us.https://www.amazon.com/ss/help/contact/?_encoding=UTF8&marketplaceID=ATVPDKIKX0DER&ref_=v_sp_contact_seller&sellerID=AI8IIFF9K7W24







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    Parts Express RF Signal Generator

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    Description:

    Generates 100 kHz to 150 MHz in 6 bands and up to 450 MHz on third harmonics. /- 3 dial accuracy. RF output: 100mV RMS to 35MHz. Audio output: 1 kHz at 1V RMS. Modulation: internal 1 kHz, external 50 Hz to 20 kHz.

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    • Dimensions: 6" H x 10" W x 5" D. Net weight: 6 lbs.
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    Koolertron Upgraded 30MHz DDS Signal Generator Counter,High Precision Dual-channel Arbitrary Waveform Function Generator Frequency Meter 200MSa/s (30MHz)

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    Description:

    Advantage:
    High frequency precision up to 10-6 orders of magnitude.
    Full range of 0.01Hz frequency resolution.
    Minimum amplitude resolution can be up to 1mV.
    Duty cycle of each channel can be adjusted separately. Precision can be 0.1.

    Frequency Characteristic:
    Sine Wave: 030MHz
    Square & Triangle Wave: 015MHz
    Pulse & Arbitrary & TTL Digital Signal Wave: 06MHz
    Square rise time: 25nS
    Frequency accuracy: 20ppm10-6
    Frequency stability: 1ppm10-6/3h

    Waveform Characteristic:
    Waveform: Sine, Square, Triangle, Pulse (duty-cycle correction), Partia Sine, CMOS, DC level, Half-wave, Full-Wave, Pos-Ladder, Neg-Ladder, Noise, Exponential Rise, Exponential Fall, Tone, Sinc Pulse, Lorentz Pulse, and 60 kinds user defined waveform.

    Output Characteristics:
    Amplitude resolution: 1mV
    Amplitude stability: 0.5/5 h
    Amplitude flatness: 5(<10MHz); 10(>10MHz)

    Frequency Meter Function:
    Frequency measurement range: 1Hz100MHz
    Measurement accuracy: Gate time continuously adjusted between 0.01S10s

    Counter Function:
    Counting region: 0-4294967295
    Coupled mode: 2kinds Coupling modes, DC and AC
    Counting mode: Manual operation

    Package Included:
    1 x DDS Signal Generator
    1 x USB Cable
    1 x Power Adapter
    2 x Q9 Cable
    1 x CD

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    • Arbitrary Waveform Generator adopts large scale FPGA integrated circuit and high speed MCU microprocessor. The internal circuit adopts active crystal oscillator as benchmark. So the signal stability is greatly strengthened.
    • Using Dual-channel DDS signal and TTL electric level output to generate precise, stable, low distortion output signal. includes Sine wave, Square wave, Triangle wave, Sawtooth wave, Pulse wave, white noise, user-defined waveform etc. each channel can be independently set the parameters.
    • With linear sweep(Max. up to 999.9s) and logarithmic frequency sweep functions.Has a frequency measurement, period measurement, positive and negative pulse width measurement and counting function.
    • Storage feature: You can store 99 groups instrument state parameters set by the user, can be called up to Reproduce. Frequency output of Sine wave can be up to 30MHz. 200MSa/s sampling rate. It has 60 positions for saving user-defined waveform. Waveform Length of each one is 2048 and vertical resolution is 14 bits
    • This Signal Generator is the ideal instrument for electronic engineering, laboratories, production lines, teaching and scientific research.






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    Audio frequency counter