Low Pass Filters
Refine signal, allowing the transmission of signal below a specific corner frequency, while attenuating the frequencies above.
See Also: Filters, Filter / Amplifiers, EMI Filters, Programmable Filters
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Low-Pass Filters
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Low-Pass Filters from Analog Devices are specifically designed to reject higher frequency noise and unwanted signals while allowing desired signals to pass through. Analog Devices offers an extensive line of continuous time and clock tunable (switched capacitor) devices preconfigured for low-pass filtering. These integrated low pass filters feature a wide range of cutoff frequencies and response characteristics.
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Programmable, 2-Channel Low-Pass Filter Module
AAF-3F
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Programmable, 2-Channel Low-Pass Filter Module. The AAF-3F is designed for use with the AAF-3M and AAF-3PCI filter boards.
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ACDC
ES Series
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The ES Series of line operated power supplies features near constant efficiency over theentire rated input voltage range. These electrically identical families employ a highly efficient, closed loop ripple regulation circuit, which contains a low pass filter. Each stage, transformer, filter and regulator is engineered for maximum efficiency.
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Multi-channel low-pass filter board
AAF-2
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The AAF-2 is a multi-channel low-pass filter board designed for use in front of A/D converters with resolution up to 16-bits. It is ideal for filtering applications in sound and vibration testing, ultrasonics, acoustics, structural analysis, industrial, test, scientific and laboratory data collection and applied mechanical applications in electronics, aerospace, field research, automotive, and process control industries.
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Precision Low-Loss Multiplexers
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Maury’s line of diplexers (DP-series) and triplexers (TP-series) are designed for applications which require combining/ splitting signals at or around harmonic frequencies (nFo) and are connectorized for design-in and test and measurement applications.DP-series diplexers are designed using low-pass and high-pass filters and pass bias between the low-frequency (or Fo) port and the common (or DUT) port.TP-series triplexers are designed using low-pass, bandpass and high-pass filters and pass bias between the low-frequency (or Fo) port and the common (or DUT) port.Power handling is rated at 100W CW (average) and typical insertion loss is better than 0.5dB between the low-pass (Fo) and common ports.DP- and TP-series multiplexers are ideal accessories for passive, active and hybrid-active multi-harmonic load pull systems.
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Low Power Analog to Digital
7430
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Smart A/D for thermocouples, thermistors, RTD's, strain and pressure gauges8-channels of 16-bit A/D resolutionEliminates trimpot adjustments by using software calibrationPerforms concurrent 32-bit floating point operations to minimize host computer loadingEach channel is software programmable for sensor type, gain, low-pass filtering, scan rate
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Smart Analog to Digital
618/619
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Supports thermocouples, RTD's, strain gauges, voltage in, 4-20mA, thermistors, and resistorsUp to 16 differential input channels plus sensor excitationEach channel is software programmable for sensor type, gain, low-pass filtering, scan rateAuto-calibration eliminates trimpotsLow power consumption
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Frequency Counters
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-Frequency Range : 0.2Hz to 5.5GHz Built-in CMOS Gate Array Fast, High-Resolution, 10 Digits Green LED Display Microprocessor Controlled Reciprocal Technique for Low Frequency Resolution Self Diagnosis Routine Total, RPM Function, Period Low Pass Filter(100KHz, -3dB) Rs-232c Interface(Option)
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Single Channel USB Programmable Band-Pass Filter
USBPBP-S1
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The USBPBP-S1 stand alone USB controllable module provides a single channel of high and low-pass filtering and high-quality instrumentation amplifier for front-end signal conditioning compatible with all popular A/D converter devices. The USBPBP-S1 is powered with 9 to 12VDC so it can be connected to a battery voltage source or the supplied 115-220VAC adapter may be used for operation with wall power anywhere in the world. When programmed from the USB port, the USBPBP-S1 will remember all of the programmed properties between power cycles. Program once and operate as a stand- alone signal conditioner without having to reprogram for every use. This is perfect for turn-key applications. It's easy to connect the USBPBP-S1 into the data collection system. Input and output signals can be routed through BNC connection or using the detachable screw terminal connectors. Optional SMA type adapters are also available.
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0.1Hz-3.7GHz Frequency Counter
FC-3000
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Features:*Frequency measuring range: 0.1Hz to 100MHz in A input, 80 MHz to 3.0GHz in C input.*Period,Total and RPM measurement for input A*9 Digit display with 0.01mHz resolution in 1 Sec (By Ext.Reference signal).*RS-232C serial interface function for communication with computer.*High sensitivity Extemal reference input function(>=1.5Vrms).*Peciprocal technique for high resolution at low counting frequencies .*Self check function executed to perform a automatic self diagnosis of various counter function.*Push-scanning for selecting Function and Gate time.*Low-pass filter(100KHz,-3dB)installed for removing noise signsl in low frequency measuring.*AC/DC coupling function(Selectable AC/CD Coupling)*10:1 Input Attenuation(Selectable×1/×10 Attenuator)*Data hold function
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Handheld Digital Multimeter, 4.5 digit, up to 800 hours battery life
U1282A
Digital Multimeter
60,000 counts resolution on dual display0.025% basic DC voltage accuracy Longer battery life up to 800 hours Certified to IP 67 for dust and water protection Tested to withstand a 3-meter (10-ft) drop Programmable via USB (Download Programming Guide here)CAT III 1000 V/ CAT IV 600 V overvoltage protection Vsense for non-contact voltage detection Square wave output for generating pulse width modulation (PWM) signal Frequency counter Low pass filter
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Low Voltage DC / Battery Powered HV Amplifiers
WMA-01 And WMA-01LF
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The Falco Systems WMA-01 is a high voltage amplifier that runs from an 24 - 30V DC power supply and can be battery powered if required, e.g. for use in a Faraday cage. Its internal high voltage generator is inductor-free and hence does not spread magnetic interference in sensitive experimental setups. The output noise is impressively low at 3mVrms. For extremely low noise applications where bandwidth is not an issue, a dedicated WMA-01LF version is available that contains an output low pass filter capacitor which reduces the bandwidth to 50Hz, but makes the noise drop to below 0.1mVrms. This bandwidth-limited amplifier is ideal for MEMS or piezo positioning with manual voltage adjustment.
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Precision Dual-Channel Compact Filter/Amplifier System
PFA-2
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he PFA-2 is a compact, rugged, and versatile dual-channel precision filter/amplifier. The low-noise, high common-mode rejection balanced differential input with programmable AC/DC input coupling is ideal for conditioning static or dynamic signal inputs. Sharp, programmable 6-pole low-pass precision filters support two response characteristics which are optimized for making time-domain or frequency-domain measurements.
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High Speed Data Acquisition Board
MS 1800
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*Bus Interface:- 64 Bit PCI Bus with PMC Interface*Virtex-4 FPGA based design*32 channel digital I/O signal*RS232 & RS485 Interface*32MB Flash*2MB Static RAM for data storage*Analog Inputs:- 2 Channel*Input Resolution:- 14 Bits*Sampling rate up to 80MSPS*Filter:- Low Pass Filter for all channels*Two Analog Outputs*14 bit Resolution*Driver interface for Windows2000/XP/VISTA and LINUX OS*Self Test future
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Industrial Clamp Meters
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*Measures AC+DC current*AC and AC+DC voltage measurements with digital low pass filter for accurate readings on variable frequency drives*Also measures DC voltage, resistance, capacitance and frequency*Tests continuity and diodes*Flashlight inside clamp jaw for easier work in dark locations*Backlight & relative mode for added versatility*Peak-RMS measures motor inrush current*AmpTip™ increases accuracy on small wires and low current*Two voltage detection modes - non-contact or using a single test lead*Data hold*Recording of Maximum, Minimum, and Average readings*Crest (peak hold) feature captures current or voltage peaks as short as 5 milliseconds
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Low Pass and Bandpass SMA Coaxial Filters
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Fairview Microwave’s bandpass filters were developed for use in various applications including GPS, ISM, RFID and Wi-Fi systems and operate in several bands, some as low as 824 MHz and some as high as 5.875 GHz. Fairview’s low pass filters allow for tailoring of a test setup for a specific application and support upper band edges of 100, 225, 400, 1000, 2000 and 3000 MHz. All of these bandpass filters and low pass filters feature female SMA connectors.
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4 Channels of Strain Gauge Inputs for the SCS-800 Signal Conditioning System
SCS-817
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The SCS-816 and SCS-817 amplifier/filter module provides eight 8-pole low-pass filters that can be individually configured for a cutoff-frequency from 0.5Hz to 70kHz(SCS-816) and 0.5Hz to 60kHz(SCS-817). Each of the SCS-816/SCS-817's eight channels features an instrumentation amplifier with software-selectable gains of 1 to 1000 in 1-2-5 steps.
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Loggers/PQA
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Kyoritsu Electrical Instruments Works, Ltd.
Large capacity for storing 60,000 data points Lowpass Filter will filter out the harmonics LED flickers when the preset current/voltage value is exceeded CALL:Confirmation of recorded data Selection of One-time mode or Endless mode Non Volatile Memory Battery power indicator The userfriendly PC software "KEW LOG Soft 2" is supplied Continuous measuring time:Approx. 10 days (Alkaline Battery)
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Analog to Digital Converter
7418/7419
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Supports thermocouples, RTD's, strain gauges, voltage in, 4-20 mA, thermistors, and resistorsUp to 16 differential input channels plus sensor excitationEach channel is software programmable for sensor type, gain, low-pass filtering, scan rateAuto-calibration eliminates trimpotsLow power consumption
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Dual Filter
Trig-TekTM 550D
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Two channels with variable high pass and low pass filters in a module 7" high x 2.6" wide
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12V based Power supply for PC104 and PC104p stacks
PC104pPWR12
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The PC104pPWR12 power supply provides for the +5, +3.3, +12, minus 12 and minus 5 from a 12V wall mount transformer supply, battery etc. Each rail is fuse protected. The supply uses switching technology to provide high efficiency coupled with low pass filtering to provide low noise and fast response to transient loads
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1.3GHz Frequency Counter
Model 1122 / 1122X
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- Wide Frequency Range 0.2Hz to 1.3GHz- 2 Separate Channels, for LOW & HIGH Frequencies- High Sensitivity- 8 Digit Green LED Display- Microcontroller based Advance Technology- Optional RS232 Interface- Reciprocal Counting Technique for High Resolution at Low Frequency- Period Measurement- Low Pass Filter for Noisy Low Frequency (<100KHz)- 4 Selectable Gates (10ms, 100ms, 1sec, 10sec)
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ACDC
EA Series
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The EA Series of line operated power supplies features near constant efficiency over theentire rated input voltage range. These electrically identical families employ a highly efficient, closed loop ripple regulation circuit, which contains a low pass filter. Each stage, transformer, filter and regulator is engineered for maximum efficiency.
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Filtered Analog Input Expansion Board
MSXB 048
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The MSXB 048 Filtered Analog Input Expansion Board has a four-pole low-pass Butterworth filter on each of its 16 single-ended channels. For DAP applications that require analog filters to take out all above-Nyquist frequencies before signal conversion, it simply replaces the MSXB 037 Analog Input Expansion board. Signal inputs normally connect to the MSXB 048 through a panel-mount DB-37 connector.
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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.
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Amplifier/Filter Module
SCS-818
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The SCS-818 and SCS-819 amplifier/filter module provides eight 4-pole low-pass filters that can be individually configured for a cutoff-frequency from 0.5Hz to 70kHz(SCS-818) and 0.5Hz to 70kHz(SCS-819). Each of the SCS-818/SCS-819's eight channels features an instrumentation amplifier with software-selectable gains of 1 to 1000 in 1-2-5 steps.
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PCI Daughter Boards
DB-1825/1/DIN (with DIN rail mounting kit)
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Screw terminal board using 37 pin cable I/O ports for PCI-1202/1602/1802/822/826 series , (32 channel single-ended ,16 channel differential)Blank pads for break detection, Low-pass filter , current shut and voltage divider (manual soldering)Dimensions :170 mm x 114 mm
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Dual Channel Multi-Band FM Tracking/Data Receiver In Modular Style Housing
LS-27-B
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The Lumistar LS-27-B Modular Dual Channel Tri-Band Tracking and Data Receiver is Lumistar’s third generation of modular high performance FM Receivers. This wideband designs supports one or two independent channels of PCM with data rates up to 20Mbps. The unit includes both an optional FM demodulated output for PCM data, and standard programmable AM/linear AGC outputs for auto-tracking receivers. The design offers 8 IF Bandwidths and 8 Video Filters per channel for each receiver.AC coupling with a low pass filter is employed to ensure a high quality data link with long strings of NRZ-L ones or zeroes. The unit provides a software selectable 10 MHz reference I/O port forlocking local oscillators to a high precision external source or to arrange multiple units in a master/slave arrangement. The receiver’s control and status is achieved via Ethernet, USB or auto-switched RS-232 (or “4-wire” RS-485 in place of 232). When utilizing the RS-422 interface, multi-drop configurations can be accommodated.
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PXIe-4300, 16-Bit, 8-Channel, 250 kS/s, 300 V, Ch-Ch Isolated PXI Analog Input Module
781337-01
Analog Input Module
16-Bit, 8-Channel, 250 kS/s, 300 V, Ch-Ch Isolated PXI Analog Input Module—The PXIe‑4300 provides integrated data acquisition and signal conditioning for high-voltage measurements. It provides increased accuracy, simultaneous sampling, and synchronization features for scalable measurement systems. The PXIe‑4300 includes 300 Vrms channel‑to‑channel CAT II isolation and 3,300 Vrms channel‑to‑earth 5 second withstand isolation to protect users and equipment from hazardous voltages. This module offers programmable lowpass filtering, DC input coupling, and two PFI lines for digital input triggering. The included NI‑DAQmx driver simplifies hardware and configuration and measurement.
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Bandwidth-Tunable Filters
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Through cascading a low-pass tunable edge filter with a long-pass tunable edge filter, one can achieve a new type of bandwidth-tunable filter whose passband width is variable while its center wavelength is still tunable. With such a device, you can
