Frequency Counters
measure frequency by comparing the signal to the counter's time base oscillator.
See Also: Universal Counters, Time Interval Counters
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Time Interval Counter PXI Card
GTX2200 Series
The GTX22x0 family of PXI universal time interval counters offer many of the measurement and timing functions of high-end stand-alone frequency counters, including accumulate, auto ratio, frequency, fast frequency (GTX2220 and GTX2230 only), period, ratio, single period, test clock, time interval, time interval delay, totalize, totalize gated, totalize gated once, & pulse width.
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Function Generators
Scientific Mes-Technik Private Ltd
Scientific offer wide range of function generators from 3 MHz to 10 MHz in general purpose and multifunction. Selection of waveform shapes apart from standard sine, triangle , square to ramp, pulse are available. SM5071 , SM5074 , SM5061 & SM5075 have built-in auto ranging frequency counter. The outputs are protected against short circuits and overload.
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50 Ohm Bridge / Freq Counter
* Generates a 3 to 30 MHz low level signal displayed on small 8 x 2 LCD * 50 ohm bridge supports tuning 50 ohm antennas * Adjust POT to find the resonate frequency of antenna * 30 turn POT allows easy smooth frequency adjustment * Bright red LED extinguishes when bridge is balanced * Function switching allows for use as frequency counter * 50 ohm termination included * measures 5.5 x 2.5 x 1.1 inches * 9 volt battery operation
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Digital Oscilloscope, 2 Channel, 300 MHz, 2 GSPS, 16 Mpts, 1.2 ns
72-7635
*2 Analogue channels*800x480, 7" Widescreen LCD display*Print screen feature*24 Automatic and 2 advanced measurements*Unique waveform recording and replay function*6 Digital trigger frequency counter*6 Digital trigger frequency counter*USB drive system software upgrade*24 month limited warranty *view Terms & Conditions for details
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Microwave Frequency Counter (up to 40GHz)
S4382
Saluki S4382 series microwave frequency counter adopts microwave sampling technology to realize microwave measurement. The function control, measurement sequence and data processing of the whole measurement process are completed by the internal microprocessor. It is a new generation of intelligent microwave frequency measurement instrument. The instrument adopts medium and large scale integrated circuits and some monolithic integrated circuits with excellent performance, which makes the design of the instrument more reasonable, with low power consumption and high reliability.
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Frequency Counter
FC-2500A
High sensitivity for the VHF & UHFfrequency measurement, useful for theCB amateur.* Handheld & pocket size instrument.* Wide measuring range up to 2.6 GHz.* Good resolution, 0.1 Hz min. displayunit for 10 MHz range.* Used the exclusive Microprocessor ICoffered the intelligent function:Frequency, Period, Multi resolution,Data hold, Relative measurement, Datarecord( Max., Min., Average reading).* Auto power off & manual power off.* LCD display for low powerconsumption & clear read-out even inbright ambient light condition.
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Programmable Multifunction Generator
IST 5800/5850
IST Information Scan Technology, Inc.
The IST-5800 series programmable multifunction generator is an exceptionally versatile and economical instrument for applications in R&D, Manufacturing Test, Service Repair and Training. Featuring an adjustable triple output power supply and waveform generator, it has the ability to provide power and signal sources for a circuit while the universal logic probe, auto-ranging frequency counter, and digital voltmeter allows you to simultaneously analyze and measure circuit activity.
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Frequency Counter with Rubidium Timebase
SR625
Stanford Research Systems, Inc.
The SR625 Frequency Counter is a NIST traceable frequency counting standard for calibarating base stations, transmitters and many other types of communication systems.
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Audio Oscillators
Frequency Range : 10Hz to 1MHz in 5 Decade Steps Very Low Distortion : <0.5% Output Voltage : 22.6Vp-p Open Circuit Sine Wave and Squre Wave Easily Choice Built-in 4 Digits Frequency Counter with Internal/External Varialble Frequency with Poly Varicon 400Hz and 1kHz Fixed Special Function Compact Design and easy Operation 2. Accessories Spare Fuse : 1EA Operator''s Manual : 1EA Power Cord : 1EA BNC Cable : 1EA
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Counters & Frequency
NLS panel mount digital counters, frequency meters, and interval timers are available in four case sizes and feature a wide range of functions. These versatile, rugged, and low cost meters find many applications. Features in various meters include highly accurate crystal time base circuitry, counts of up to one million per second, frequencies to 60 MHz, battery back-up and a presettable decimal point. Multiplexed BCD outputs are also available for some meters.
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Millimeter Wave Frequency Counter 70-170 GHz
Insight Product Co. offers the electronic frequency counter for frequency measurements of millimeter wave generators of continuous or pulsed signals. The counter has an auto and waiting modes of operation and a direct 6-digits reading in frequency range (70-170) GHz without an external mixer.
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Resonance Dip Meter
NRM-2
National RF’s Resonance Dip Meter is a test instrument used to determine the resonant frequency of a tuned circuit or resonant network, such as an antenna system. In addition, the unit may function as an RF detector, or a secondary frequency source. The instrument is analogous to the older vacuum tube “grid dip meter,” once popular in every electronic laboratory or radio station. Unique to this updated version is a buffered output that may drive a digital frequency counter for exact measurement of resonant frequency, or connected to an oscilloscope to be used as an RF detector and waveform/modulation monitor.
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3MHz Function Generator + 60MHz Freq. Counter
FG 32
6 function, 6 ranges. Frequency Range 0.5Hz~3MHz. Linear / Log sweep fucntion. Frequency Counter 0.2 ~ 60MHz. Frequency Counter Max. Resoltuion 0.001Hz¡C
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6000 Series Digital I/O Modules
Series 6000 digital I/O modules record signals from frequency counters, flow meters, encoders, discrete transducers, IRIG time, etc. which are often part of the test environment. These digital signals are time aligned and recorded alongside the system’s analog measurements. High density digital inputs provide an opportunity to easily include facility controls like switches, valve positions, relays, lights, etc. along with the test data. Series 6000 digital I/O modules also provide outputs generated by user command or automatically by Sequence, Alarms or DSP. User generated outputs are accomplished in software while sequencers can be programmed prior to a test and initiated by program or hardware control. Alarm conditions preprogrammed on the analog side can automatically generate digital outputs which are typically connected to facility control systems or PLCs. A DSP adds powerful real-time processing and is appropriate for PID control loops, derived parameter calculations and a variety of other real-time operations.
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InfiniiVision Oscilloscopes
3000T X-Series
100 MHz - 1 GHz, DSO and MSO models Speed testing with simplified operation and documentation enabled by the 8.5-inch capacitive touch screen Isolate signals in seconds with exclusive Zone Touch Triggering See the most signal detail with 1,000,000 wfms/s update rateQuickly modulate and characterize signals with built-in WaveGen 20 MHz ARB, 3-digit voltmeter and 8-digit frequency counter & totalizer options Decode serial busses faster with hardware-based serial analysis options Protect your investment with full upgradeability
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Digital Multimeter
6420 DM
Standard Electric Works Co., Ltd
● 4000 counts LCD with a maximum display of 3999.● Angled display design helps the user to identify the reading of value easier.● Auto ranging designed.● Bar graph LCD display.● Range change function.● Relative/Maximum/Minimum modes.● Peak hold mode.● VAHz mode measures frequency in voltage or current mode.● 40M Hz frequency counter.● Auto Power off.● Continuity check.● Data hold function.● Low battery indication.● Over range indication.● Fuse protection.● Special hook design used to hang the meter for ease of use.
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Mini Receiver
FB7-NX
In about 1935, the National Radio Company of Malden, Mass., brought out a “hot” high frequency receiver, called the FB7, and the subsequent FB-7X. It featured a super-hetrodyne design with plug-in coils that gave it a broad frequency range. The “X” model also incorporated a crystal filter in the intermediate frequency section, thus giving it additional selectivity. The receiver was viewed by radio amateurs as a technological breakthrough, and it was also used commercially for point to point high frequency communications. As the receiver did not have an internal RF amplifier section, a separately tunable RF amplifier was later provided in a separate enclosure for additional performance capabilities. Now, National RF, Inc., is resurrecting the fabled receiver name with an all solid-state, hot mini receiver, which also utilizes plug-in coils to cover the HF spectrum. The mini-receiver is designed for use by radio amateurs as well as serious short-wave listeners, and allows reception of AM, CW, and SSB signals. It incorporates a super-hetrodyne design with a dual gate FET built-in RF preamplifier and a ceramic filter for selectivity, often required when used in a crowded amateur radio band. In addition, the receiver has a buffered rear panel output of the high frequency oscillator for use with either a frequency counter for exact receive frequency display, or for interface with an outboard transmitter. A rear panel jack is also provided for muting the receiver when a transmitter is placed into the transmit mode. And, the receiver is small enough to fit into carry-on luggage and taken on trips when it is desired to “keep an ear” on amateur radio or other high frequency activity. The receiver utilizes rear panel plug-in coil assemblies which contain the RF amplifier, mixer, and oscillator tuned circuits. Each plug-in coil assembly also comes with a separate dial scale, which is inserted onto the front panel for displaying the tuned frequency. A very smooth 6 to 1 planetary drive is used for tuning the receiver. Other front panel controls include RF preamplifier peak, volume control, Beat Frequency Oscillator adjustment, and RF gain control. Other switches include filter bandwidth, AM/CW/SSB selection, Power, and a general coverage/band spread control for certain plug-in assemblies. The receiver is intended to drive head-phones via a rear panel jack, but has sufficient output to drive a small external speaker.
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AC/DC Clamp Meter
3902 CL
Standard Electric Works Co., Ltd
● 2000 - count LCD.● Full automatic measurement. ◎ Voltage measurement. ◎ Current measurement. ◎ Resistor measurement. ◎ Capacitor measurement ◎ Frequency counter.● Range change function.● Data Hold function freezes the reading.● Continuity check.● Diode measurement.● Low battery indication.● Auto Power Off (APO) function.● Safety design throughout with no exposed metal parts, shielded banana plugs and recessed input terminals.
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Counters
For fast and accurate frequency and time interval measurement you need reliable equipment in research and development. The Keysight 53210A RF frequency counter fulfills the prerequisites for this with its high accuracy, bandwidth and speed. Depending on your application and budget, choose one of the three available models. The connection to the PC is via USB , Ethernet / LXI or GPIB .
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Portable Digital Oscilloscopes
GAO Tek offers a variety of Portable Digital Oscilloscopes with long lasting battery life and durable design. These Portable Digital Oscilloscopes have a wide range of real-time sampling rate from 72 MSa/s to 25GSa/s. These Portable Digital Oscilloscopes also have other functions integrated into them such as a digital multimeter and a frequency counter. These portable oscilloscopes are designed for the sciences, medicine, engineering and telecommunications industry.
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Universal Frequency Counter LXI, GPIB
53220A
For fast and accurate frequency and time-interval measurements, you need reliable devices in research and development. The Keysight 53220 universal frequency counter meets the requirements for this with its high accuracy, bandwidth and speed. Depending on the application and budget, choose one of the three available models. The connection to the PC is via USB, Ethernet/LXI or via GPIB.
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Function Generators
PGP Electronics Private Limited
PGP Electronics Function Generators are a reliable source for different waveforms. Two units, function generator and frequency counter are integrated in to one unit. The built-in frequency counter can also be used to measure the external frequency.
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Frequency Counter (225MHz - 18GHz)
S43180
S43180 series high-precision frequency counter is a high-precision frequency measurement instrument. It has a frequency measurement resolution of 10 bits per second. The whole machine scheme adopts countdown technology and digital interpolation technology to realize the high-precision measurement of the instrument. It has measurement functions such as frequency, period, frequency ratio and powerful mathematical statistics operations (maximum value, minimum value, average value, PPM, standard deviation, Allan variance).S43180 series has reliable performance, complete functions, high measurement accuracy, wide frequency measurement range, high sensitivity, large dynamic range, high cost performance and easy to use. It is especially suitable for frequency measurement in scientific research and measurement fields such as aerospace, crystal oscillators, and components.
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Power Limiters
Keysight's power limiters provide the best broadband input protection from excess RF power, DC transients and ESD, for a variety of RF and microwave instruments and components. For example, the input circuitry of spectrum analyzers, network analyzers, frequency counters or amplifiers can be protected from unintentional inputs up to 5 watts average power. At even greater power levels, failure mode for the limiter is either an open circuit or a short circuit to ground, thereby protecting the instrument from damage.
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350 MHz RF Frequency Counter, 10 digits/s
53210A
Single-channel, RF frequency counter One 350 MHz input channel, plus optional second channel (6 GHz or 15 GHz)10 digits/second resolution Built-in math analysis and color, graphical display (trend and histogram)LXI-C/LAN, USB, GPIB Optional: Lithium Ion Battery BenchVue software enabled: Do more with your PC and instrument together, no programming required. Easily control your counters, quickly build automated tests and log data for faster analysis and save precious time.
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Portable Multimeter
ST-2004
Standard Electric Works Co., Ltd
● Big-size liquid crystal display.● 3 ¾ digital LCD with a maximum display of 3999.● Bar-graph LCD.● Back light function.● Data hold function.● Auto-ranging design.● Range change function.● Relative/Maximum/Minimum modes.● Peak hold mode.● VAHz mode measures frequency in voltage or current mode.● 40M Hz frequency counter.● Auto power off.● Continuity check.● Low battery indication.● Over range indication.● Fuse protection.● Easy-to-carry handle that doubles as a convenient stand.● Robust case.● Holster is optional.
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AC/DC Clamp Meter
3904 CL
Standard Electric Works Co., Ltd
● 4000 - count LCD.● Full automatic measurement. ◎ Voltage measurement. ◎ Current measurement. ◎ Resistor measurement. ◎ Capacitor measurement ◎ Frequency counter.● Range change function.● Data Hold function freezes the reading.● Continuity check.● Diode measurement.● Low battery indication.● Auto Power Off (APO) function.● Safety design throughout with no exposed metal parts, shielded banana plugs and recessed input terminals.
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PCI Digital I/O
APC464
Four 16-bit multifunction counters/timers are configurable for pulse width modulated output, watchdog timer, event counter, frequency measurement, pulse width measurement, period measurement, or one shot pulse output. The four 16-bit counters can also be configured into two 32-bit counter/timers.
