Frequency Counters

What is a Frequency Counter?

A frequency counter is an electronic instrument that is used for measuring frequency. They usually measure the number of oscillations or pulses per second in a periodic electronic signal. The frequency counter is simple to use, you just turn the counter on and apply the signal to the input. They can be used for measuring many signals from digital logic signals to RF and microwaves.

General guidelines on using a Frequency Counter

• Do not overload input: This may occur when using some RF frequency counters that may have a 50Ω input.
• Keep frequency counter time-base / clock warm: The time-base of clock within a frequency counter governs the overall accuracy of the instrument.
• Requires accurate time-base: As the accuracy of the time-base directly reflects onto the accuracy of the measurement, it is necessary to use an instrument with an accurate time-base, or use an external one that is very accurate.
• Calibrate: With various aspects such as crystal ageing that affects even the most accurate crystal- based clock oscillators or time-bases, it is necessary to ensure that the time-base frequency is maintained as accurately as possible and all other functions are operating within their specified ranges.
• For noisy signals, pay attention to trigger error: When using a frequency counter or timer with a noisy signal, the noise can cause spurious counts which affects the reading.
• Lock all time-bases to a single clock: When a system uses several time-bases, there are possibilities of uncertainty between the signals that can cause some inaccuracies. To overcome this, it is often wise to lock all the elements of a system to a single accurate time-base.
Applications include:
• Measuring the frequency of a transmitter carrier
• Measuring the frequency of an oscillator in a circuit
• Measure the frequency of a signal on a line
• Any application where the frequency of a steady repetitive signal needs to be measured
To be able to measure the frequency of an RF signal using a frequency counter there are a few prerequisites.
• Frequency must be steady, i.e. not varying
• The signal should not have modulation applied as this prevents proper counting
• Signal must have sufficient amplitude – typically signals over about half a volt are suitable
• Signals should not be so large that they overload the input
Frequency counters are an easy to use test instrument, have few problems and give accurate results.

...
Lees meer Lees minder

Filters

1 - 20 van 31 producten worden weergegeven
Resultaten per pagina
Omschrijving Prijs Maximum Frequency Minimum Frequency Resolution Calibrated Pulse Width Resolution Attenuation Maximum Internal Counter Minimum Internal Counter Maximum Input Voltage Minimum Input Voltage Input Impedance Measurement Time Connector Type Dimensions
RS-stocknr. 498-753
FabrikantnummerPFM3000
FabrikantAim-TTi
286,50 €
Each
Aantal stuks
3GHz 3 Hz 6 Digit UKAS - - 188888888 - 30V ac/dc - 1 MΩ, 50 Ω 10s - 178 x 81 x 30mm
RS-stocknr. 487-864
FabrikantnummerPFM3000
FabrikantAim-TTi
243,00 €
Each
Aantal stuks
3GHz 3 Hz 6 Digit RSCAL - - 188888888 - 30V ac/dc - 1 MΩ, 50 Ω 10s - 178 x 81 x 30mm
RS-stocknr. 457-730
FabrikantnummerPFM3000
FabrikantAim-TTi
173,00 €
Each
Aantal stuks
3GHz 3 Hz 6 Digit - - - 188888888 - 30V ac/dc - 1 MΩ, 50 Ω 10s - 178 x 81 x 30mm
RS-stocknr. 192-5828
FabrikantnummerHM8123
FabrikantRohde & Schwarz
1.770,00 €
Each
Aantal stuks
3GHz 0 Hz 10 Digit RSCAL 5ns 1:1, 1:10, 1:100 - - 250 V, 5V - 1 MΩ, 50 Ω - BNC, SMA 365 x 285 x 75mm
RS-stocknr. 622-3265
FabrikantnummerHM8123
FabrikantRohde & Schwarz
1.700,00 €
Each
Aantal stuks
3GHz 0 Hz 10 Digit - 5ns 1:1, 1:10, 1:100 - - 250 V, 5 V - 1 MΩ, 50 Ω - BNC, SMA 365 x 285 x 75mm
RS-stocknr. 192-5829
FabrikantnummerHM8123
FabrikantRohde & Schwarz
1.813,50 €
Each
Aantal stuks
3GHz 0 Hz 10 Digit UKAS 5ns 1:1, 1:10, 1:100 - - 250 V, 5V - 1 MΩ, 50 Ω - BNC, SMA 365 x 285 x 75mm
RS-stocknr. 712-8956
Fabrikantnummer53220A
2.575,50 €
Each
Aantal stuks
350MHz 0 Hz 12 Digit UKAS 40ns - - - 5 V, 50 V -50 V, -5 V 1 MΩ, 50 Ω - BNC 261.2 x 302.2 x 103.8mm
RS-stocknr. 810-6305
FabrikantnummerTF930
FabrikantAim-TTi
436,00 €
Each
Aantal stuks
3GHz 0.001 Hz 10 Digit RSCAL 20ns 1:1, 5:1 9999999999 1 30V ac/dc - 1 MΩ, 50 Ω - - 235 x 260 x 88mm
RS-stocknr. 766-3490
FabrikantnummerTF960
FabrikantAim-TTi
561,00 €
Each
Aantal stuks
6GHz 0.001 Hz 10 Digit RSCAL 20ns 1:1, 5:1 9999999999 1 30V - 1 MΩ, 50 Ω 100s Type-N 260 x 235 x 88mm
RS-stocknr. 713-4295
Fabrikantnummer53220A
2.462,00 €
Each
Aantal stuks
350MHz 0 Hz 12 Digit - 40ns - - - 5 V, 50 V -50 V, -5 V 1 MΩ, 50 Ω - BNC 261.2 x 302.2 x 103.8mm
RS-stocknr. 668-1582
FabrikantnummerTF930
FabrikantAim-TTi
436,00 €
Each
Aantal stuks
- - - - - - - - - - - - - -
RS-stocknr. 712-8953
Fabrikantnummer53220A
2.532,00 €
Each
Aantal stuks
350MHz 0 Hz 12 Digit RSCAL 40ns - - - 5 V, 50 V -50 V, -5 V 1 MΩ, 50 Ω - BNC 261.2 x 302.2 x 103.8mm
RS-stocknr. 810-6314
FabrikantnummerTF930
FabrikantAim-TTi
479,50 €
Each
Aantal stuks
3GHz 0.001 Hz 10 Digit UKAS 20ns 1:1, 5:1 9999999999 1 30V ac/dc - 1 MΩ, 50 Ω - - 235 x 260 x 88mm
RS-stocknr. 768-3441
FabrikantnummerTF960
FabrikantAim-TTi
491,00 €
Each
Aantal stuks
6GHz 0.001 Hz 10 Digit - 20ns 1:1, 5:1 9999999999 1 30V - 1 MΩ, 50 Ω 100s Type-N 260 x 235 x 88mm
RS-stocknr. 766-3493
FabrikantnummerTF960
FabrikantAim-TTi
604,50 €
Each
Aantal stuks
6GHz 0.001 Hz 10 Digit UKAS 20ns 1:1, 5:1 9999999999 1 30V - 1 MΩ, 50 Ω 100s Type-N 260 x 235 x 88mm
RS-stocknr. 668-1585
FabrikantnummerTF930
FabrikantAim-TTi
479,50 €
Each
Aantal stuks
- - - - - - - - - - - - - -
RS-stocknr. 665-4919
FabrikantnummerTF930
FabrikantAim-TTi
366,00 €
Each
Aantal stuks
3GHz 0.001 Hz 10 Digit - 20ns 1:1, 5:1 9999999999 1 30V ac/dc - 1 MΩ, 50 Ω - - 235 x 260 x 88mm
RS-stocknr. 711-8912
FabrikantnummerFCA3100
FabrikantTektronix
4.033,50 €
Each
Aantal stuks
300MHz 0.001 Hz 12 Digit UKAS 1.6ns 1:10 - - 5 V, 50 V -50 V, -5 V 1 MΩ, 50 Ω 250ksps BNC, SMA, Type-N Female 395 x 210 x 90mm
RS-stocknr. 713-4286
Fabrikantnummer53210A
2.137,00 €
Each
Aantal stuks
350MHz 0 Hz 10 Digit - 40ns - - - 5 V, 50 V -50 V, -5 V 1 MΩ, 50 Ω - BNC 261.2 x 302.2 x 103.8mm
RS-stocknr. 712-8947
Fabrikantnummer53210A
2.250,50 €
Each
Aantal stuks
350MHz 0 Hz 10 Digit UKAS 40ns - - - 5 V, 50 V -50 V, -5 V 1 MΩ, 50 Ω - BNC 261.2 x 302.2 x 103.8mm
Related Products
Range of resettable counters with data retention rated ...
Description:
Range of resettable counters with data retention rated at greater then 10 years. Prescaler options and Multiplier scaling outputs for correctly displaying engineering units. Units have a maximum count frequency of either 30Hz or 5kHz depending on setting. Inputs are ...
The Hengstler Signo 721 series counter is a ...
Description:
The Hengstler Signo 721 series counter is a 5-digit backlit LCD display, dual preset, totalising digital counter. This counter has a supply voltage rating ranging between 12VDC and 30VDC. Counting operating modes are one channel add or subtract direction mode, ...
The Omron H7EC series digital counter is an ...
Description:
The Omron H7EC series digital counter is an 8-digit LCD display, panel mount, self-powered and PNP/NPN universal DC voltage input device. It is available with a 7-segment large display with an 8.6mm character height. The H7E family includes total counters, ...
Range of resettable counters with data retention rated ...
Description:
Range of resettable counters with data retention rated at greater then 10 years. Prescaler options and Multiplier scaling outputs for correctly displaying engineering units. Units have a maximum count frequency of either 30Hz or 5kHz depending on setting. Inputs are ...