Test, Lab, Medical equipment » Frequency Counters

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Used amplifier

  • Stanford Research FS725

    Stanford Research FS725

    • Manufacturer: Stanford Research
    • Model: FS725

    Benchtop Rubidium Frequency Standard O725rms: #NAME? | 2: Distribution amplifier - 12 additional outputs | O725rmd: Double rack mount kit for FS725 | Cal: Calibration Available | 1: Distribution amplifier - 6 add...

    $4,950 USD
    Farmingdale, NJ
  • Trusted Seller
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    Stanford Research Systems / SRS FS725

    • Manufacturer: Stanford Research
    • Model: FS725

    Rubidium Frequency Standard. 10 MHz, 5 MHz, and 1 PPS outputs. Ultra low phase noise. Includes option 01 built-in distribution amplifier (6 additional outputs).

    Cary, NC
  • Trusted Seller
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    Racal Dana 1999

    • Manufacturer: Racal
    • Model: 1999

    Frequency Measurement to 2.6 GHz (3 GHz under restricted operating conditions) 9 Digit Resolution in 1 second Wide Dynamic Range, Protected Amplifiers Period and Ratio Measurement Single Key Nulling High Sensitiv...

    New Smyrna Beach, FL
  • Pendulum 6688 & 6689

    Pendulum 6688 & 6689

    • Manufacturer: Testwall

    Details 6688 Standalone Frequency Standard 6689 Rubidium Frequency Standard Distribution amplifiers for 5x10 MHz and 1x5 MHz outputs as standard Optional 10x10 MHz outputs 0.001 ppm aging in 10 years (Rubidium) I...

    Dublin, Ireland
  • Stanford Research FS725

    Stanford Research FS725

    • Manufacturer: Stanford Research

    Stanford Research FS725 Details Stanford Research FS725 Stanford Research FS725 10 MHz Frequency Standard The FS725 integrates a rubidium oscillator (SRS model PRS10), a low-noise AC power supply, and distributio...

    Lake Mary, FL
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    SIGLENT SSA5000-P3

    • Manufacturer: SIGLENT

    Pre-amplifier, 9 kHz ~ 13.6 GHz (software license).

    $1,254 USD
    Rivalta di Torino, Italy

Overview

Frequency counters are electronic instruments used to measure the frequency of an incoming signal. They are essential in various fields, including telecommunications, electronics, and laboratory research, for accurately determining the frequency of signals in hertz (Hz). These devices are valuable for troubleshooting and ensuring the proper operation of RF systems, oscillators, and signal generators.

FAQ

What should I consider when buying a used frequency counter?

Consider the frequency range, accuracy, and resolution of the device. Check for any visible damage and ensure it powers on and functions correctly. Review any available calibration records.

How can I ensure the frequency counter is shipped safely?

Use a reputable shipping service with experience in handling delicate electronic instruments. Ensure the frequency counter is well-packaged with protective materials to prevent damage during transit.

What maintenance is required for a frequency counter?

Regular maintenance includes keeping the device clean and dust-free, checking connections, and verifying calibration periodically. Follow the manufacturer’s guidelines for specific maintenance procedures.