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
Universal Counter/Timer
PXIe-2461
Counter/Timer Module
The Astronics PXIe-2461 is a high-performance, 2-channel, universal 235 MHz frequency interval counter. Occupying a single PXI Express peripheral slot or hybrid slot, the frequency and time interval/counter (FTIC) offers 12 easy-to-use automatic measurement functions including:
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Product
Frequency Counter
FC-2500A
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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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Product
Power Limiters
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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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Product
8-Channel, 100 MHz Counter/Timer/Frequency Meter Function Card
ProDAQ 3808
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The ProDAQ 3808 function card, an enhanced version of the ProDAQ 3806 counter/timer function card, is designed to operate in one of three modes: pulse counter, frequency meter, or time interval counter. In the pulse counter and frequency measurement modes, users can process incoming signals of up to 25 MHz on each of the six channels. A time interval counter range is divided into six sub-ranges, covering times from 40 ns to 20000 s with a maximum resolution of 10 ns. For pulse-width measurements, the same ranges apply.
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Product
PMR Power Meter
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The 3030 RF Power Meter is a modern version of the traditional Antenna Watt and VSWR instrument. The instrument cover communication bands from 30MHz to 500MHz. The 3030 RF Power Meter will measure forward and reflected power in the range from milliWatts up to 100Watts. Built in frequency counter. The counter will show the transmit frequency and will call the calibration table for the actual frequency. Outside the range of the counter the instrument can be set into manual mode giving a wider dynamic range. The 3030 RF Power Meter will calculate VSWR or Return Loss, and features Peak and Hold mode. Accessory kit with soft or hard carrying bag, car charger and coax adapters for standard types are available
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Product
Digital Frequency Counter
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PGP Electronics Private Limited
PGP Electronics Digital Frequency Counter, model 3503 is a very useful instrument for the measurement of frequency. It employs state of the art micro controller technology to provide accurate measurement. It has a 6 digit auto range display. Further, for easy readability of the units of the measurement, the Hz, KHz and MHz are indicated by LEDs .
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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
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
110 GHz Frequency Extender
N5293AX53
Frequency Extender
The N5293AX53 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
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
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
40-72 GHz Doubler
1GC1-8048
Frequency Extender
The 1GC1-8048 is a balanced diode frequency doubler consisting of two Schottky diodes and a coplanar balun structure. The doubler provides 15 dB conversion loss and 17.5 dBc 1st and 3rd order feed-thru for input frequencies between 20 and 33.5 GHz. This IC is fabricated in HFTC's InGaP/GaAs heterojunction bipolar transistor (HBT) process that provides excellent uniformity, reliability and 1/f noise performance.
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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 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
DC - 12 GHz High Efficiency GaAs HBT MMIC Divide by 4 Prescaler
HMMC-3024
Frequency Divider
The HMMC-3024 is a DC - 12 GHz divide by four pre scaler designed for use in high frequency communications, microwave instrumentation, and EW radar systems where low phase-noise PLL control circuitry or broadband frequency translation is required.
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Product
NI-9326, 6-Channel, 150 V, 128 kHz C Series Frequency Input Module
786999-02
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
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
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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 3.74 (106.00) - 14.35 (407.00) High Frequency Probe
K-50B-QG-75R
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): 1,637Overall Length (mm): 41.58
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Product
Standard 0.79 (23.40) - 1.75 (49.60) High Frequency Probe
CSP-40A-024
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): 200Recommended Travel (mil): 133Recommended Travel Remark: Shield: 211 (5.36) including travel of probesOverall Length (mil): 1,231Overall Length (mm): 31.28Full Travel Remark: Shield: 225 (5.72) including travel of probes
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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
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
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
Standard 3.27 (93.00) - 8.13 (231.00) High Frequency Probe
K-50L
High Frequency Probe
Current Rating (Amps): 5Bandwidth @ -1dB (GHz): 4.00Return Loss @ -20dB (GHz): 1.90Nominal 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
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
Frequency Counter, 30MHz to 800MHz, 500MHz to 2.8GHz, 7 Digits
72-7390
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Rugged instrument is smaller than a deck of cards, yet provides frequency measurement of digital, on/off keying and analog signals from 30MHz to 2.8GHz. It is perfect for displaying the output of two–way radio equipment, analog and digital cell phones, RF remote controls and many other items. Internal vibrator alert also makes this an outstanding device for detecting transmitters in counter–surveillance applications
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Product
Active Differential Probe, 100 kHz to 12 GHz
U1818B
High Frequency Probe
The Keysight U1818B 100 kHz to 12 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 U1818B allows measurements to be made while taking full advantage of Keysight's RF analyzers dynamic range.
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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 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
NI-9361, 32-Bit, 8-Channel C Series Counter Input Module
783407-02
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.
