Test, Lab, Medical equipment » Frequency Counters

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Used calibration filter

Agilent/Keysight E1332A
- Manufacturer: Agilent - Keysight
- Model: E1332A
The Keysight E1332A 4-Channel Counter/Totalizer is a B-size, 1-slot, register-based VXI device. It provides seven counter functions: frequency (up to 4 MHz), period average, pulse width, time interval, totalize, ...
Farmingdale, NJ
Trusted Seller
Krohn-Hite 3320
- Manufacturer: Krohn-Hite
- Model: 3320
0.01 Hz to 99.9 kHz frequency 24 dB per octave attenuation slope 0 dB or 20 dB pass band gain Eight pole Butterworth or RC response ±2% calibration accuracy < 0.1% distortion (typically) 0.5 mV RMS hum and noise ...
New Smyrna Beach, FL
Fluke 7260A
- Manufacturer: Fluke
- Model: 7260A
The 7260A will measure frequencies to 125 MHz, or (optionally) to 520 MHz or 1300 MHz, with a 50Ω channel (Channel C). The 7260A has a 10 MHz clock, with 100 ns resolution. This counter will make time-interval or...
Farmingdale, NJ
Fluke 7261A
- Manufacturer: Fluke
- Model: 7261A
The 7261A will measure frequencies to 125 MHz, or (optionally) to 520 MHz or 1300 MHz, with a 50Ω channel (Channel C). The instruments are essentially alike except the 7261A has a 100 MHz clock, with a correspond...
Farmingdale, NJ
Fluke 7250A
- Manufacturer: Fluke
- Model: 7250A
The Model 7250A is a Seven-digit universal counter-timer capable of measurements in frequency, period, period average, time interval, totalize, ratio, and self check mode. IN addition, counts per minute mode offe...
Farmingdale, NJ
Phase Matrix 346A
- Manufacturer: Phase Matrix
Frequency Range Channel 1 (Normal mode) 10 Hz–125 MHz (Low pass filter enabled) 10 Hz–50 kHz Channel 2 50 MHz–46 GHz Sensitivity Channel 1 10–30 Hz 40 mV rms 30 Hz–125 MHz 25 mV rms Channel 2 50–300 MHz −20 dBm 0...
$3,575 USD
Farmingdale, NJ
Fluke 1900A
- Manufacturer: Fluke
- Model: 1900A
The Fluke Model 1900A is a 5 Hz to 80 MHz multiple-function counter capable of making frequency, period, and period averaging and totalize measurements. In the frequency mode, resolution is manually selectable at...
Farmingdale, NJ
Agilent/Keysight 5341A
- Manufacturer: Agilent - Keysight
- Model: 5341A
The Agilent HP 5341A Frequency Counter performs exceptionally fast measurements of frequency up to 4.5GHz Using a unique HP-designed microwave switchable filter, its automatic heterodyne measurement technique ins...
Farmingdale, NJ

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.