Preamplifiers
Detect and strengthen a signal prior to greater amplification.
See Also: Amplifiers, RF Amplifiers, Current Amplifiers, Audio Amplifiers, Voltage Amplifiers, Transconductance Amplifiers, Op Amps, Klystron, Instrumentation Amplifiers, Distribution Amplifiers
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Product
Signal Processor Board
MS 1532
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- Frequency coverage from 5 kHz to 30 MHz in 1-Hz steps- High dynamic range: +30 dBm 3rd-order intercept typical- Digital filtering provides 58 IFBWs from 56 Hz to 8.0 kHz with exceptional shape factors- AM, Synchronous AM, FM, CW, USB, LSB & ISB detection modes standard- Tunable notch filter- Fast, flexible scanning with 100 memory channels- Large readable LED displays & user-friendly controls- Noise blanking & pass band tuning- Internal switchable preamplifier & attenuator- Operator-selectable RS-232, RS-485, or- RS-422 remote control- Viretx 5 FPGA based design (Two virtex for image processing)- LPC2468 ARM 7 Processor based design- MIL1553B and RS485 Interface- Two High speed 14 bit ADC (125MSPS) for I & Q Sampling- Direct sampling 2-30MHz- Audio CODEC- Conduction Cooled Board
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Product
Microphone Calibration Workstation
9350C
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The Precision Acoustic Calibration Workstation Model 9350C is an accurate, turnkey, automated PC-based system that features cost-effective calibration of ¼", ½" and 1" microphone cartridges (open-circuit sensitivity), microphone cartridges with preamplifiers (closed-circuit sensitivity) and microphone Frequency Response Function.
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Product
OEM Pulse Energy and Power Measuring Instrument
LEM 2510
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This OEM-Meter is assembled in a standard cassette for the industrial 19? system. It has a width of 21TE. A touch panel and function keys make this device comfortable and easy to handle. The preamplifiers integrated into the device and the choice of sensor sensitivity, allow to use a wide range of sensor heads.?
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Product
DC to 350 MHz Preamplifier
SR240A
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Stanford Research Systems, Inc.
The model SR240A 350 MHz Preamplifier is a 4-channel, DC-coupled instrument with a gain of 5 per channel. The amplifiers can be used independently or cascaded to provide gains of 5, 25, 125 or 625.
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Product
Microphone Preamplifier
426B31
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Performance:Nominal Microphone Diameter:1/4" Frequency Response:3.98 to 126000 Hz3.98 to 126000 10.0 to 126000 Hz10.0 to 126000 HzElectrical Noise (A-weight)3.8 TEDS CompliantYes
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Product
Preamplifier, 10 MHz to 4 GHz
87405B
Amplifier
Preamplifiers and System Noise Figure Application Note This note discusses noise figure basics including applications and characteristics of Keysight simplifier technology. Highlighted are Keysight's 87405C portable preamplifiers that provide an exceptional gain of 25 dB up to 18 GHz and a probe-power bias connection which eliminates the need for an additional DC power supply. Read the Preamplifiers and System Noise Figure Application Note now!
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Product
High-Sensitivity Tri-Axial Accelerometer with Built-In Preamplifier
NP-7310
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NP-7310 is the accelerometer with built-in preamplifier, and capable of tri–axial directions simultaneous measurement. It is suitable for the low frequency vibration measurement such as ground vibration or floor vibration while operating the machine. NP-7310 can be used with the sensor amplifier unit such as AU-2100, AU-2300 or PS-1300. Also, it is possible to input directly to the analyzer or recorder which the constant current amplifier is built-in such as the FFT Analyzer of DS-2000 series, DS-3000 series, CF-7200A, CF-9000 series or CF-3650/3850 series.
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Product
Accelerometer (Charge Output Type)
NP-2000 Series
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This sensor converts mechanical vibrations into electric signals in proportion of vibration acceleration.You can choose the one that is ideal for your purpose,conditions,applications etc. from wide variety of selection.Charge amplifier is necessary because it is a charge output type,however, compared to pre-amplifier built-in type, it can be used at higher temperature in general.
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Product
Bias Tees for Radio Amateurs
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Bias Tee for remote power supply of preamplifiers and converters via the coaxial cable.
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Product
Accelerometer with Built-In Preamplifier
NP-3000 series
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This sensor converts mechanical vibrations into electric signals in proportion of vibration acceleration."The NP-3000 series offers ultra-small masses of 0.4g, tri-axial type which can obtain vibration directions of XYZ at once, waterproof, high sensitive type, and so on. You can choose the most suitable detector according to the purpose of use, operation conditions, and applications. Since the preamplifier is built in the detector main body of the NP-3000 series, sensor signal input part can be made relatively inexpensively and it can be directly connected to analysis equipment such as our FFT analyzer."
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Product
(40×70×12mm) Full Function Single Channel Small Form Factor Pre-Amplifier EDFA Module
SPA4300-FM01
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Hangzhou Huatai Optic Tech. Co., Ltd.
SPA4300-FM01 is a full-function single channel Pre-Amplifier EDFA module with digital control electronics, adopts subminiature 40×70×12mm compact package, combined with artistic package and best optic performance, creating the best flexible and variable low-cost amplifier in the market. This module is suitable for multiple network application, especially the application that requires 40GB/S transmission speed.
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Product
FieldFox Handheld Microwave Signal Analyzer, 54 GHz
N9963B
Signal Analyzer
A lightweight, durable, software-enabled, microwave signal analyzer, interference analyzer, distance-tracking generator, preamplifier, power meter, and more.
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Product
Perseus SDR HF Receiver
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PERSEUS is a VLF-LF-HF receiver made by Microtelecom is based on a outstanding direct sampling digital architecture. It features a 14 bit 80 Ms/s analog-to-digital converter with an exceptional 76 dB SNR (BW = 40 MHz), an high-performance configurable FPGA digital down-converter with an up to 1 MS/s output sampling rate and a 480 MBit/s, high-speed USB 2.0 PC interface. Unlike in lower class direct sampling receivers, the PERSEUS RF analog front-end has been carefully designed for the most demanding users and includes a 0-30 dB, 10 dB steps attenuator, a low-loss 10 bands pass-band RF preselector filters bank, and an high dynamic preamplifier with a top-class input third-order Intercept Point of more than 30 dBm. The resulting third-order dynamic range is 103 dB for SSB signals (2.4 KHz BW) and 107 dB for CW signals (500 Hz BW).
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Product
FieldFox Handheld Microwave Spectrum Analyzer, 18 GHz
N9937B
Spectrum Analyzer
A lightweight, durable, microwave spectrum analyzer, interference analyzer, distance-tracking generator, preamplifier, power meter, and more.
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Product
Active Input Module for Teledyne RESON TC4014 and TC4032, Hydrophones with Built-In Preamplifiers
EC6076
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The EC6076 Active Input module is for the Teledyne RESON TC4014 and TC4032 hydrophones with built-in pre-amplifiers.EC6076 provides an easy interface to the hydrophones, it al-lows use of the differential output from the hydrophones ei-ther via direct feedthrough of the signal on an XLR output con-nector or via the built-in differential amplifier that converts the differential hydrophone signal into a single-ended +6dB signal on a BNC/coax out. EC6076 has a built-in rechargeable battery that provides power for the EC6076 differential amplifier and the TC4000 hydrophone.
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Product
Emissions Test System
PC-114
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Perform Radiated & Conducted EMI pre-compliance testing at your facility up to 1 GHz. Com-Power PC-114 EMI emissions test system is a ideal solution performing pre-compliance EMC testing from 9 kHz - 1 GHz.. It has essential equipment needed for radiated and conducted EMI emissions measurements. The system includes a spectrum analyzer, antennas, near field probes, a preamplifier, LISN and a non conductive antenna tripod. Pre-compliance testing in EMC is a commonly used term not easy to define. In general, it implies testing done prior to formal testing for legal compliance. Formal legal compliance is performed at a facility designed and equipped with test instrumentation that is fully compliant with the applicable EMC standards. Such facility and instrumentation is capital intensive and can be expensive even to rent and not easily available. Compliance testing is performed per exacting requirements of the Standards and other reference documents adhering to the test methods and last detail. In addition, the test facility may require to be accredited by an accreditation body such as NVLAP, A2LA. Often it is desirable to know prior to compliance testing at such facility, whether a product is close to compliance and also how close. Pre-compliance testing is specially useful for specifications such as FCC, Part 15, EN 55022 or EN 55011 (CISPR 22 or CISPR11). Pre-compliance testing usually means using the full compliance methods but making a few educated compromises in use of site or equipment to reduce costs and testing time. Here are some benefits of pre-compliance testing.
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Product
Probes For Non-Contact Ultrasonic Testing
SONOSCAN CFC / CF
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Due to the strong damping properties of air, low frequencies in the kHz range are used in air-coupled ultrasonic testing. It is therefore all the more important that the ultrasonic transducers offer a particularly high sensitivity in order to ensure high penetration and improved resolution. We achieve this, among other things, by installing preamplifiers in the receiver probe as well as by using our own Piezocomposite Technology, which enables a flexible use of the matching materials in our CFC and CF probes.
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Product
Low Noise Differential Preamplifiers
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Provide a high gain amplification to 1MHz with an AC output derived from a very low noise FET instrumentation amplifier. Each model has fixed gain settings of x1 (0dB), x10 (20dB), x100 (40dB) and x1000 (60dB) over a selectable bandwidths of 100Hz, 1kHz (HP), 3kHz, 30kHz, 100kHz and 1MHz (7000 model only). Noise referred to input is 7nV√Hz and common mode rejection is >100dB at 1kHz. Momentary pushbutton switches are provided that control coupling, bandwidth, gain and channel on/off selections. BNC connectors are provided for single-ended and differential input, ac output, and dc output (optional) connections.
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Product
Microphone Preamplifier
426E01
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Nominal Microphone Diameter: 1/2 Gain -0.05 dBFrequency Response (0.1 dB) (re 1 kHz)6.3 to 125000 HzFrequency Response (-3 dB) (re1 kHz) Phase Linearity (<1 )32 to 20000 Electrical Noise (A-weight)<2.8 V<2.8 V[1] Output Slew Rate 2 V/S[2]
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Product
Shield Level / Pathloss Equipment
SG1000B/PR1000A
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The SG1000 Signal Generator and PR1000A Preamplifier have been designed to simplify the measurement of shielding integrity in a shielded enclosure. When coupled with a high stability spectrum analyzer and an appropriate selection of test antennas, the SG1000/PR1000A combination can measure shielding effectiveness at all of the NSA 94-106 (supersedes NSA 65-6) defined test frequencies from 1 kHz to 10 GHz.The PR1000A amplifies the received signal from the test antenna and overcomes the high noise figure of the companion test receiver or spectrum analyzer. The PR1000A will ensure that the system noise figure will be less than 4.5 dB at all test frequencies from 1 kHz to 10 GHz. When used with a spectrum analyzer measurement bandwidth of 100 Hz, the system exhibits a sensitivity of -150 dBm at the test antenna output.To overcome high cable loss between the test antenna and the PR1000A assembly at 10 GHz, a remote low noise pre-amplifier (Praxsym PN 310-010091-001) is mounted directly onto the 10 GHz antenna.
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Product
USB Preamplifier, 100 MHz to 26.5 GHz
U7227C
Amplifier
The U7227C, 100 MHz to 26.5 GHz USB preamplifier is designed to bring reliable gain and low noise figure to measurement systems improving the overall system performance and reduce systematic errors; a total solution to the X-Series signal analyzers to perform noise figure measurement
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Product
Microphones/Preamplifiers
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To apply gain to (amplify) the signal without changing how the signal sounds.
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Product
Current Preamplifier
1211
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The model 1211 Current Preamplifier was designed to provide all of the features required of a modern laboratory preamplifier. It measures cur rents with full scale sensitivity ranging from 10 to 10 amperes.
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Product
Energy Probes
RjP-400 Series
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The RkP-400 Series probes consist of a compact detector assembly, or head, and a preamplifier housed in a separate enclosure. The external dimensions of all the 400 Series Probes are the same, with identical detector planes, allowing for easy interchange of probes in an experiment. The heads have both ¼-20 and M6 tapped holes, a built-in 1" (25mm) filter holder, and a side-mounted BNC connector. Probe specific data, including spectral response curves and calibration dates, is stored in the preamplifier for access by the instruments.
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Product
Microphone Preamplifier
HT426E01
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Nominal Microphone Diameter1/2Frequency Response Electrical Noise(at 22 C) (Flat 20 Hz to 20 kHz)Distortion (3 V rms input at 1 kHz)<-70 dB<-70 dB[1] EnvironmentalTemperature Range (Operating)-40 to +248 FExcitation Voltage 20 to 32 Constant Current Excitation 2 to 10 mA
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Product
Externally Polarized Precision Condenser Microphones & Preamplifiers
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Externally polarized microphones set the initial standard for all acoustic test and measurement applications. They rely on a dedicated 200V power supply and specialized cables with 7-pin LEMO® connectors. Their straightforward design supports a wide product range. Often chosen as replacements for existing models or when prepolarized alternatives are unavailable.
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Product
High Impedance Preamplifier
1671
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The Model 1671 is a single ended low noise field effect transistor
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Product
Instrumentation
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Unholtz-Dickie designs and manufactures a variety of transducer signal conditioners, accelerometers, remote charge preamplifiers, vibration monitors & limiters, transducer testers, buffer amplifiers and other special purpose instrumentation accessories for vibration testing.
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Product
Power modules
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G.R.A.S. Sound & Vibration A/S
It provides polarization voltage for the transducer, ensuring that the microphone gets the charging voltage it needs.It provides supply voltage for the microphone preamplifier. The preamplifier acts as a unity gain impedance converter. It provides a certain amount of line drive capability by providing a low output impedance and output current, making it possible to transmit the signal from the transducer to the Power Module without significant degradation.A power module can provide amplification or attenuation to the signal, thus making it possible to fine tune the measurement chain to the signals being measured and the hardware being used.Selectable filters make it possible to exclude unwanted noise from the measurement, e.g. wind induced noise from outdoor measurements.Overload detection makes it possible to validate the measurements and is a useful tool in monitoring setups.When a Power Module with gain is used, you can use longer cables because of the power module's ability to deliver current.A Power module introduces electrical isolation
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Product
1 MHz Bandwidth Voltage Preamplifier with Bandpass Filter
EC6081 mk2 - preamplifier
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The EC6081 mk2 (VP2000) is a 1MHz bandwidth voltage preamplifier with bandpass filter that is designed for uses in conjunction with piezoelectric hydrophones. VP2000 offers excellent low-noise performance over the entire frequency range; and adjustable gain selection. A range of 12 high-pass and 12 low-pass filters are available, these allow ideal band pass filter settings.





























