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
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
110 GHz Frequency Extender
N5293AX01
Frequency Extender
The N5293AX01 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
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
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
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
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
Standard 3.74 (106.00) - 14.35 (407.00) High Frequency Probe
K-50L-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 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 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 0.79 (23.40) - 1.75 (49.60) High Frequency Probe
CSP-40G-021
High Frequency Probe
Your product description goes here.
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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
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
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
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
120 GHz Frequency Extender
N5295AX01
Frequency Extender
The N5295AX01 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
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 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
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
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
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
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 3.06 (86.70) - 4.00 (113.40) RF Probe For SMA Connectors
CSP-30ES-013
High Frequency Probe
Nominal Impedance (Ohms): 50Current Capacity (Amps) @ 20° C: 1.00Bandwidth @ -1dB (GHz): 35.00Return Loss @ -20dB (GHz): 22.00Test Center (mil): 328Test Center (mm): 8.33Recommended Travel (mil): 100Recommended Travel (mm): 2.54Full Travel (mil): 200Full Travel (mm): 5.08Overall Length (mil): 1,033Overall Length (mm): 26.24Rec. Mounting Hole Size (mil): 297Rec. Mounting Hole Size (mm): 7.54
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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
110 GHz Frequency Extender, Pulsed DC Bias
N5293AX52
Frequency Extender
The Keysight N5293AX52 is a broadband frequency extension module designed for use with Keysight’s new PNA / PNA-X-based millimeter-wave solutions. It is a compact, lightweight, and ruggedize frequency extender module with built-in bias tee for pulsed DC bias operation. It interfaces with the Keysight N5292A test set controller. The modules allow users to extend the frequency coverage of a base PNA / PNA-X Series network analyzers to a range of 10 MHz to 110 GHz. For more information about cable and accessories for use with network analyzers, please visit Network Analyzer Accessories.
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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
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
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
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
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
Counters
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Premier's microprocessor based counters are useful for many applications like pulse counter, batch, length, preset counter, event counter, time totalizer and rate indicator.





























