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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Product
Frequency Counter Products
53200 Series
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The Keysight 53200 Series of 350 MHz universal and RF frequency counter/timers serve all of your frequency and time interval measurement needs. 3 available models offer resolution capabilities up to 12 digits/sec single-shot frequency resolution on a one second gate. Single-shot time interval measurements can be resolved down to 20 psec. All models in 53200 series offer new built-in analysis and graphing capabilities to maximize the insight and information you receive. Use the connectivity of your choice: LXI-C/Ethernet, USB, GPIB. Additionally, an optional battery is available to increase portability and maintain time base accuracy.
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Product
Mini Receiver
FB7-NX
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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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Product
Resonance Dip Meter
NRM-2
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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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Product
Frequency Meter, 3.7 to 12.5 GHz
537A
Frequency Counter
The Keysight 537A direct-reading frequency meter measures frequencies from 3.7 to 12.5 GHz quickly and accurately. Its long scale length and numerous calibration marks provide high resolution. This is particularly useful when measuring frequency differences or small frequency changes. Frequency is read directly in GHz so interpolation or charts are not required.
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Product
350 MHz Universal Frequency Counter/Timer, 12 digits/s, 100 ps
53220A
Frequency Counter
Two 350 MHz input channels, plus optional third channel (6 GHz or 15 GHz)12 digits/second resolution, 100 p sec time interval resolution LXI-C/LAN, USB, GPIB Built-in math analysis and color, graphical display (trend and histogram)Optional: Lithium Ion Battery Bench Vue 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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Product
20-50 GHz Doubler
1GC1-8038
Frequency Extender
The 1GG1-8038 is a passive diode frequency doubler. It is specified to operate with a 2050 GHz output frequency. Conversion efficiency is usually around -12 dB. The device has low 1/2 and 3/2 spurious output, typically 15 dBc or better. The doubler can be biased through onchip resistors to allow operation at low input levels. Up to 22 dBm at the input can be accommodated. Onchip DC blocking capacitors are included at the input and output.
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Product
120 GHz Frequency Extender, Pulsed DC Bias
N5295AX02
Frequency Extender
The N5295AX02 is a compact and broadband frequency extender with built-in pulsed bias-tee and provides 10 MHz to 120 GHz single-sweep measurements with N5292A test set controller systemized with a PNA/PNA-X B vector network analyzer.
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Product
110 GHz Frequency Extender, Pulsed DC Bias
N5293AX02
Frequency Extender
The N5293AX02 is a compact and broadband frequency extender with built-in pulsed bias-tee and provides 10 MHz to 110 GHz single-sweep measurements with N5292A test set controller systemized with a PNA/PNA-X B vector network analyzer.
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Product
110 GHz Frequency Extender
N5293AX51
Frequency Extender
The N5293AX51 modules are compact lightweight modules designed to interface to the N5292A test set controller that is driven with a PNA/PNA-X B model vector network analyzer.
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Product
Standard 6.20 (175.20) - 8.00 (226.80) High Frequency Probe
CSP-40A-015
High Frequency Probe
Bandwidth @ -1dB (GHz): 6.00Return Loss @ -20dB (GHz): 2.30Nominal Impedance (Ohms): 50Dielectric VTE Rating (k VAC): 1Test Center (mil): 250Test Center (mm): 6.35Full Travel (mil): 200Full Travel (mm): 5.08Recommended Travel (mil): 133Recommended Travel Remark: Shield: 211 (5.36) including travel of probesOverall Length (mil): 1,231Overall Length (mm): 31.28Full Travel Remark: Shield: 275 (6.99) including travel of probes
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Product
K-50 Series Probes
High Frequency Probe
The K-50 coaxial probe provides an instrumentation-quality interface for broadband R.F. measurements up to 4 GHz. With the K-50 R. F. circuit design, impedance characterization measurements can be performed using it as a Network Analyzer port-extending accessory. Accurate and repeatable small signal and R.F. power (50 Watts) measurements provide consistent and repeatable results.
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Product
Standard 4.47 (127.00) - 12.00 (340.00) High Frequency Probe
K-50H-S
High Frequency Probe
Current Rating (Amps): 6Bandwidth @ -1dB (GHz): 4.00Return Loss @ -20dB (GHz): 2.50Nominal Impedance (Ohms): 50Test Center (mil): 600Test Center (mm): 15.24Full Travel (mil): 100Full Travel (mm): 2.54Recommended Travel (mil): 90Recommended Travel (mm): 2.29Overall Length (mil): 1,205Overall Length (mm): 30.61
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Product
Standard 4.47 (127.00) - 12.00 (340.00) High Frequency Probe
K-50B-S
High Frequency Probe
Current Rating (Amps): 6Bandwidth @ -1dB (GHz): 4.00Return Loss @ -20dB (GHz): 2.50Nominal Impedance (Ohms): 50Test Center (mil): 600Test Center (mm): 15.24Full Travel (mil): 100Full Travel (mm): 2.54Recommended Travel (mil): 90Recommended Travel (mm): 2.29Overall Length (mil): 1,205Overall Length (mm): 30.61
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Product
RF High Frequency Probes
High Frequency Probe
*Low impedance*High bandwidth up to 20 GHz*Repeatable measurements*Coaxial design*Interchangeable center conductor
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Product
Active Differential Probe, 100 kHz to 7 GHz
U1818A
High Frequency Probe
The Keysight U1818A 100 kHz to 7 GHz active differential probe makes it easy to perform high frequency in-circuit measurements using network, spectrum and signal source analyzers. With flat frequency response, low noise floor, and direct power from instrument connection, the U1818A allows measurements to be made while taking full advantage of Keysight's RF analyzers dynamic range.
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Product
Standard 3.74 (106.00) - 14.35 (407.00) High Frequency Probe
K-50B-QG-75
High Frequency Probe
Nominal Impedance (Ohms): 50Bandwidth @ -1dB (GHz): 12.00Return Loss @ -20dB (GHz): 3.00Test Center (mil): 550Test Center (mm): 13.97Full Travel (mil): 100Full Travel (mm): 2.54Recommended Travel (mil): 67Recommended Travel (mm): 1.70Overall Length (mil): 1,575Overall Length (mm): 40.00
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Product
350 MHz Universal Frequency Counter/Timer, 12 digits/s, 20 ps
53230A
Frequency Counter
The Keysight 53230A universal frequency counter/timer serves all your frequency and time interval measurement needs. In addition to the typical frequency and time interval measurements, continuous/gap-free measurements are available for basic modulation domain analysis. Optional burst measurement software is available. An optional microwave channel can be added to measure 6 or 15 GHz.
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Product
NI-9361, 32-Bit, 8-Channel C Series Counter Input Module
783407-01
Counter Input Module
32-Bit, 8-Channel C Series Counter Input Module - The NI‑9361 is a differential or single-ended input module. With this module, you can expand beyond the four counters in CompactDAQ to reach up to 64 counters per 8‑slot chassis. You can configure each channel to read a single pulse train or combine them to read up to four incremental encoders. You can also directly connect sensors with open-collector or push-pull outputs by using an internal switchable 1 kΩ pull‑up resistor. The NI‑9361 counters can perform encoder position and velocity measurements. You can synchronize the counters with other analog, digital, and counter measurements in your chassis.
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Product
NI-9326, 6-Channel, 150 V, 128 kHz C Series Frequency Input Module
786999-01
Frequency Input Module
6-Channel, 150 V, 128 kHz C Series Frequency Input Module - The NI-9326 is a channel-to-channel isolated frequency input module for CompactDAQ and CompactRIO systems. This module includes six differential input channels with a 0 Vrms to 150 Vrms input range. The NI-9326 also features configurable thresholds for connection to a variety of variable reluctance sensors, single channel encoders, and hall-effect sensors. You can use the included embedded counters to perform frequency measurements or edge-counting for tracking total counts on a periodic signal. Additionally, the NI-9326 supports configurable Butterworth filters to help you perform low-noise frequency measurements.
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Product
In-Circuit Testing and Test Engineering
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5184 Test NodesHPUX or Windows60 Mhz ASRU Frequency Counter, Timer10 Mhz Clock, 6 Mhz data ratesVector Test for VLSI, PLCC & ASICSTestjet and VTEP Vectorless TestingAdvanced Boundary ScanSilicon Nails AvailableSeries V upgradeable
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Product
Standard 1.90 (53.90) - 8.00 (226.80) High Frequency Probe
CSP-40B-012
High Frequency Probe
Nominal Impedance (Ohms): 50Dielectric VTE Rating (k VAC): 1Bandwidth @ -1dB (GHz): 6.00Return Loss @ -20dB (GHz): 2.30Test Center (mil): 250Test Center (mm): 6.35Full Travel (mil): 200Full Travel (mm): 5.08Full Travel Remark: Shield: 275 (6.99) including travel of probesRecommended Travel (mil): 133Recommended Travel (mm): 3.38Recommended Travel Remark: Shield: 211 (5.36) including travel of probesOverall Length (mil): 1,151Overall Length (mm): 29.24
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Product
110 GHz Frequency Extender
N5293AX03
Frequency Extender
The N5293AX03 modules are compact lightweight modules designed to interface to the N5292A test set controller that is driven with a PNA/PNA-X B model vector network analyzer.
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Product
Time Interval Counter Card
GC2200 Series
Interval Counter
The GC22x0 family of PCI 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 (GC2220 and GC2230 only), period, ratio, single period, test clock, time interval, time interval delay, totalize, totalize gated, totalize gated once, and pulse width.
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Product
Standard 0.80 (22.00) - 4.00 (114.00) High Frequency Probe
CSP-03B-006
High Frequency Probe
Current Rating (Amps): 6Bandwidth @ -1dB (GHz): 3.70Return Loss @ -20dB (GHz): 1.80Dielectric VTE Rating (k VAC): 1Nominal Impedance (Ohms): 50Test Center (mil): 300Test Center (mm): 7.62Full Travel (mil): 250Full Travel (mm): 6.35Recommended Travel (mil): 167Recommended Travel (mm): 4.24Overall Length (mil): 1,090Overall Length (mm): 27.76
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Product
120 GHz Frequency Extender
N5295AX53
Frequency Extender
The N5295AX53 modules are compact lightweight modules designed to interface to the N5292A test set controller that is driven with a PNA/PNA-X B model vector network analyzer.
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Product
Standard 3.27 (93.00) - 8.13 (231.00) High Frequency Probe
K-50L-QG
High Frequency Probe
Bandwidth @ -1dB (GHz): 4.00Return Loss @ -20dB (GHz): 0.80Nominal Impedance (Ohms): 50Test Center (mil): 550Test Center (mm): 13.97Full Travel (mil): 250Full Travel (mm): 6.35Recommended Travel (mil): 225Recommended Travel (mm): 5.72Overall Length (mil): 1,830Overall Length (mm): 46.48
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Product
120 GHz Frequency Extender
N5295AX03
Frequency Extender
The N5295AX03 modules are compact lightweight modules designed to interface to the N5292A test set controller that is driven with a PNA/PNA-X B model vector network analyzer.
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Product
120 GHz Frequency Extender
N5295AX51
Frequency Extender
The N5295AX51 modules are compact lightweight modules designed to interface to the N5292A test set controller that is driven with a PNA/PNA-X B model vector network analyzer.
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Product
Standard 0.80 (22.00) - 4.00 (114.00) High Frequency Probe
CSP-03G-003
High Frequency Probe
Current Rating (Amps): 6Bandwidth @ -1dB (GHz): 3.70Return Loss @ -20dB (GHz): 1.80Nominal Impedance (Ohms): 50Dielectric VTE Rating (k VAC): 1Test Center (mil): 300Test Center (mm): 7.62Full Travel (mil): 250Full Travel (mm): 6.35Recommended Travel (mil): 167Recommended Travel (mm): 4.24Overall Length (mil): 1,090Overall Length (mm): 27.76
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Product
Standard 1.90 (53.90) - 8.00 (226.80) High Frequency Probe
CSP-40L-013
High Frequency Probe
Nominal Impedance (Ohms): 50Dielectric VTE Rating (k VAC): 1Bandwidth @ -1dB (GHz): 6.00Return Loss @ -20dB (GHz): 2.30Test Center (mil): 250Test Center (mm): 6.35Full Travel (mil): 200Full Travel (mm): 5.08Full Travel Remark: Shield: 275 (6.99) including travel of probesRecommended Travel (mil): 133Recommended Travel (mm): 3.38Recommended Travel Remark: Shield: 211 (5.36) including travel of probesOverall Length (mil): 1,151Overall Length (mm): 29.24
