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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Preamplifiers
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A.H. Systems'' Preamplifier line is an excellent choice with a rugged design, no hassles with soldering your own power leads and they improve overall system sensitivity by at least 20 dB. All of A.H. Systems'' Preamplifiers come with a 12-volt (or 15-volt) DC regulated power source. A low voltage indicator confidently allows you to power the amplifier with your own external 12-volt DC battery. This makes it a convenient choice for field measurements. See table below for amplifier specifications.
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Modern Prepolarized Precision Condenser Microphones & Preamplifiers
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Modern prepolarized microphones are designed with newer technology than traditional externally polarized microphones. Prepolarized microphones have many advantages over the externally polarized models. They use ICP® power circuitry invented for sensors by PCB®. By applying a polymer coating to the top of the backplate and embedding a charge on it, expensive 200V power supplies can be eliminated and 2-20 mA constant current supplies or signal conditioners can be used as the power source.
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Preamplifiers
AH-series
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A broad mix of in-line preamplifiers and accessories are offered to enhance hydrophone measurements by increasing the gain, preserving the flatness response, extending the dynamic range, and minimizing reflections.
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Preamplifiers
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The primary function of a preamplifier is to extract the signal from the detector without significantly degrading the intrinsic signal-to noise ratio. Three basic types of preamplifiers are available: the current-sensitive preamplifier, the parasitic-capacitance preamplifier, and the charge-sensitive preamplifier. ORTEC manufactures a preamplifier to fit your detector, your application, and your budget.
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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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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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Preamplifiers
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Is an electronic amplifier that converts a weak electrical signal into an output signal strong enough to be noise-tolerant and strong enough for further processing, or for sending to a power amplifier and a loudspeaker.
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Electronic Instruments
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The ORTEC range of modular electronics includes instruments in NIM formats as well as other modular instruments, such as photomultiplier bases, preamplifiers and other accessories. ORTEC also offers modular instruments for pulse height spectroscopy, fast timing, counting, high voltage power supplies and other special functions.
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ELT STALKER Vector-finder
VF-121
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The Vector-Finder Types VF-121 and VF 121A are unique in the Vector-finder series of direction finding antennas. They incorporate a proven design, electro statically shielded loop sensing element with modern solid state low noise analog and digital technology to allow detection and location of aircraft band signals. Both the VF-121 and the VF 121A incorporate a unique digital modulator which allows the user to more easily home-in on unmodulated carriers. Such cases occur at airports when transmitter may be accidentally keyed on during aircraft overnight layovers. The VF-121 is specifically designed to be used on airport premises where signal strengths are high. To compensate for very strong signals, an integral attenuator is also incorporated to allow the user to operate the unit close-in to aircraft. The VF-121A differs in that a high gain, low-noise preamplifier is utilized with the sensing element in order to hunt signals that may be weak or at a distance. The unit is ideally suited for the location of ELT transmitters in the field. Both units are tunable over the 118 MHz to 130 MHz aircraft frequencies and interface directly to the user’s aircraft band receiver or transceiver via the antenna jack. With the antenna system connected to the receiver, the user will hear the desired signal. If the signal is unmodulated, the digital modulator will generate a tone on the carrier. When the handheld unit is rotated about, an audible null on the received signal or the generated tone will be heard. This null aligns with the axis of the equipment case and represents the direction of the received signal. This direction may be read from the black dial compass mounted on the top of the enclosure. As the response is bi-directional, triangulation may be used to determine the true bearing when the true direction is not known.
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Microwave Wideband High-power input type PIN Receivers
MR30 (30KHz~100GHz)
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Hangzhou Huatai Optic Tech. Co., Ltd.
MR30 series microwave wideband optical receiver, adopts waveguide intergrated PIN photodetector. Within 40KHz~100GHz bandwidth, they are featured with excellent linearity, high responsibility and superior flatness of the RF response in both, power and phase. They provide an outstanding linearity fiber optical communication for analogue and digital wideband microwave application. MR30 series PIN photodetector products have unsurpassed high-power handing capability. In system application, they can pre-amplify the received optical power by EDFA, favorable responsibility, with high voltage out, avoiding the need for electrical amplification. They are suitable for testing and application in microwave opto-electronics and high speed lightwave area as well as 40Gb/s (OC-768, STM-256) high-speed communication system.
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Low-Noise Voltage Preamplifier
SR560
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Stanford Research Systems, Inc.
The SR560 is a high-performance, low-noise preamplifier that is ideal for a wide variety of applications including low-temperature measurements, optical detection, and audio engineering
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(70×90×12mm) Single Channel Gain Block MSA Compact Pre-Amplifier EDFA Module
SPA4300-GM02
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Hangzhou Huatai Optic Tech. Co., Ltd.
SPA4300-GM02 is a gain block optical Pre-amplifier EDFA module, adopts 70×90×12mm MSA compact package. It is featured with high reliability, superior optical performance and compact reasonable configuration by Industrial standard, creating the most 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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Power Probes
RkP-400 Series
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The RkP-400 Series probes consist of a compact head containing the detector 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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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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PXIe-5668, Up to 26.5 GHz PXI Vector Signal Analyzer
783124-02
Signal Module
Up to 26.5 GHz PXI Vector Signal Analyzer - The PXIe‑5668 offers wide bandwidth with high-performance measurement performance and speed. It meets the challenging requirements of applications such as wireless communications, radio frequency integrated circuit characterization, RADAR … test, and spectrum monitoring and signal intelligence. With its implementation as a PXI instrument, the PXIe‑5668 also features the fast measurement speed required for high-volume manufacturing test, and multi-instrument synchronization capabilities for phase-coherent MIMO test. You can use the optionally included PXIe-5698 preamplifier to improve dynamic range and sensitivity near the instrument noise floor.
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Preamplifier, 100 MHz to 18 GHz
87405C
Amplifier
Exceptional gain (25 dB) and flatness (1.5 dB) combined with a probe-power bias connection which eliminates the need for an additional DC power supply, makes these preamplifiers the ideal choice for spectrum analyzer or stand alone applications.
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FieldFox Handheld Microwave Signal Analyzer, 44 GHz
N9961B
Signal Analyzer
A lightweight, durable, software-enabled, microwave signal analyzer, interference analyzer, distance-tracking generator, preamplifier, power meter, and more.
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JFET Voltage Preamplifier
SIM910
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Stanford Research Systems, Inc.
The SIM910 and SIM911 are low-noise, programmable preamplifiers which are ideal for a wide range of small signal applications. The primary differences between the two models are their input impedance and input noise.
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Hydrophone
TC4047
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The TC4047 miniature hydrophone offers a useable frequency range from 1kHz to 170kHz. The hydrophone incorporates a high quality 20dB low-noise pre-amplifi er which provides optimal conditions for signal transmission. The high sensitivity provides excellent signal to noise ratio and immunity against induced cable noise. The hydrophone is omnidirectional up-to 100kHz and has uniform receiving characteristic from 1kHz to 100kHz. An insert calibration circuit enables remote testing of the hydrophone condition. The hydrophone comes with a SEACON connector. The sensor element is permanently encapsulated in Special formulated NBR to ensure long term reliability. The rubber has been specially compounded to ensure acoustic impedance close to that of water. The strainrelief and outer jacket of the cable is made of high density polyurethane. TC4047 can be used in sea or fresh water.
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2-Ch Sensor Amplifier
SR-2210
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The SR-2210 sensor amplifier accepts constant-current line drive sensors and connects the signal to analyzers and recorders that would not otherwise be compatible with constant-current sensors.The units connects directly with BNC connectors to ONO's model MI-3111 microphone preamplifiers and NP-3000 series of accelerometers.With compact, light-weight, battery operation, it can save for preparation of measurement.
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ICP Microphone System
378C10
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This model includes a 1/4" microphone cartridge, a mated preamplifier with TEDS, and system calibration.
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PXIe-5668, Up to 26.5 GHz PXI Vector Signal Analyzer
783156-02
Signal Module
Up to 26.5 GHz PXI Vector Signal Analyzer - The PXIe‑5668 offers wide bandwidth with high-performance measurement performance and speed. It meets the challenging requirements of applications such as wireless communications, radio frequency integrated circuit characterization, RADAR test, and spectrum monitoring and signal intelligence. With its implementation as a PXI instrument, the PXIe‑5668 also features the fast measurement speed required for high-volume manufacturing test, and multi-instrument synchronization capabilities for phase-coherent MIMO test. You can use the optionally included PXIe-5698 preamplifier to improve dynamic range and sensitivity near the instrument noise floor.
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Active broadband antenna up to 6GHz
Series HyperLOG ® 70 X
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Compatible with any Spectrum Analyzer or Oscilloscope. Incl. High-End Preamplifier. Ultra high gain (44dBi). The HyperLOG X LogPer antenna series can be used to locate extremely weak signals, thanks to the integrated preamplifier. The antenna offers excellent directional characteristics which can be optimized using theoptional Laser and Compass.
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C-Band DWDM Pre-Amplifier EDFA (WPA-C)
HWA4300 (With SNMP)
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Hangzhou Huatai Optic Tech. Co., Ltd.
Huatai HWA4300 series, is designed for C-Band 44 waves or 88 waves DWDM system design Pre-Amplifier gain flatness. Products using the most excellent optical performance, the most advanced electronic control technology and comprehensive software features, has a wide operating wavelength range, Low noise, excellent gain flatness characteristics and transient characteristics.
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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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FieldFox Handheld Microwave Spectrum Analyzer
N9936B
Spectrum Analyzer
A lightweight, durable, microwave spectrum analyzer, interference analyzer, distance-tracking generator, preamplifier, power meter, and more
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Transformer Preamplifier
SR554
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Stanford Research Systems, Inc.
The SR554 is a low-noise, transformer-coupled preamplifier optimized for source impedances between 0.05 Ω and 1 kΩ. With an input noise of only 0.1 nV/√Hz, the SR554 can be used in a wide range of low-noise applications.
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Acoustic Emission Preamplifier
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The Acoustic Emission Preamplifier is a instrument designed specifically for use with acoustic emission sensors, which is used to boost the signals and filter out any noise or interference. With its advanced technical features and robust design, the QingCheng Acoustic Emission Preamplifier is the perfect choice for professionals seeking a high-performance acoustic testing solution.
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Breakout Module
PXI-PDM
Breakout Module
The PXI Preamplifier Power and Trigger Breakout Module (PXI PDM) is an accessory for the Pixie-4 system.
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(70×90×15mm) Full Function Single Channel MSA Compact Pre-Amplifier EDFA Module
SPA4300-FM02
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Hangzhou Huatai Optic Tech. Co., Ltd.
SPA4300-FM02 is a full-function optical Pre-Amplifier with digital control electronics, adopts 70×90×15mm MSA compact package. It is featured with high reliability, superior optical performance and compact reasonable configuration by Industrial standard, creating the most 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.
