References
A source of comparison.
See Also: Reference Standards, Reference Antennas, Reference Decoders, Reference Jumpers, Reference Sources, Reference Transformers, Reference Transmitters, Acoustical References, Frequency References, Solar Reference Cells
-
Product
Microwave Wideband Externally Modulated Transmitters (without RF Amp)
MT80 (30KHz~40GHz)
-
Hangzhou Huatai Optic Tech. Co., Ltd.
MT80 series microwave optical transmitter, adopts external modulation technique, are able to transmit 40GHz microwave RF signal with long distance, wide bandwidth, and flat responsibility. They provide an outstanding linearity fiber optical communication for analogue and digital wideband microwave application. Due to avoidance of using expensive coaxial cable or wave guide, there will be no limitation in transmission distance, which improves the signal quality and reliability of the microwave communication. They can be widely applied in microwave communication system such as remote wireless; timing and reference signal distribution, telemetry, measurement and delay line etc as well as 10Gb/s and 40Gb/s high speed communication system. MT80 adopts low noise, narrow linewidth CW DFB laser as light source; LiNbO3 external modulator as signal modulation, no laser chirp, low dispersion distortion, high extinction ratio, Full-transparency operation mode. It can be applied in long distance and extra-long distance transmission after EDFA.
-
Product
Color Wheel Test Kits
-
The color discs use a visual comparison method (color matching) to determine concentration. Simply add reagents to the sample and turn the wheel until the sample matches the reference color. The concentration is displayed in a window.
-
Product
Programmable Multifrequency Clock Synthesizer - PMC
Model 7191
-
- Simultaneous synthesis of up to up to 5 different clocks- Eight SMC clock outputs- Ideal for A/D and D/A converter clock sources- Typical phase noise: -105 dBc/Hz @ 1 kHz offset- All clocks are phase-locked to input reference signal- Input reference frequency of 5 or 100 MHz- Four programmable VCXOs with 32-bit tuning resolution- Output clocks of 1, 2, 4, 8, or 16 submultiples of VCXO base frequencies- Output clock frequencies between 50 and 700 MHz- Control and status via PCI bus interface
-
-
Product
3207a GPS/GNS Frequency and Time Reference
GlobalTyme2
-
Precise Time and Frequency, Inc.
The ptf 3207A GlobalTyme2 GNS Receiver introduces a new level of advanced capability from a second generation, based on the highly successful ptf 3203A and ptf 3204A GlobalTyme receivers.The unit is both a frequency standard and a time standard and has been used as a precision frequency reference with low phase noise, in satellite communications applications around the world.
-
Product
Phase Noise Analyzer
NXA-50
-
This new NXA-50 is a sea-change in Phase Noise Test Systems. Making both residual and absolute noise measurements out to 50 GHz, this self-contained instrument uses either internal or external references with cross correlation for maximum dynamic range.
-
Product
Multifunctional Safety Tests
-
Manufacturers of electrical or electronic products are required by law to carry out an electrical safety test before placing them on the market. This final test takes place at the end of the manufacturing process and is therefore also referred to as an EOL test (end-of-line). Depending on the prescribed standard and directive, the following parameters are tested:- Leakage current and discharge current- Insulation resistance or the insulation strenth- Dielectric strength or electric strength- Correct installation of the protective conductor (ground continuity and ground bond test)- Faultless functioning of the product under the conditions defined for intended use (function or run test
-
Product
PH Meters
-
Shenzhen Graigar Technology Co.,Ltd.
A pH Meter is a device used for potentiometrically measuring the pH, which is either the concentration or the activity of hydrogen ions, of an aqueous solution. It usually has a glass electrode plus a calomel reference electrode, or a combination electrode.
-
Product
Bus Analyzer
FireSpy430b(T)/830b(T)
-
The FireSpy430b(T) and FireSpy830(bT) bus analyzers are the single bus models in the 4th generation of IEEE-1394 analyzers from DapTechnology. Based on the industry leading FireSpy810 the all new and enhanced architecture of the FireSpy430b(T)/830b(T) have again defined a new reference in IEEE-1394 test equipment! They comprise a significantly more powerful on-board processor, more memory and improved connectivity to the host.
-
Product
Precision High Voltage Meter
4700
-
The Vitrek 4700 Precision High Voltage Meter offers the highest level of measurement accuracy when it comes to high-voltage measurement equipment. Its color touch screen is surprisingly easy to use for set up and display of testing results. Vitrek leverages DSP technology to provide outstanding AC &DC high voltage measurement accuracy, stability, repeatability and resolution. The 4700 High Voltage Meter offers performance that rivals traditional high voltage reference dividers – yet unlike the tedious divider, the 4700 provides instant, direct, high voltage measurements in a highly portable, compact and rugged bench top enclosure.
-
Product
Accelerometers - Special Purpose
-
Analog Devices accelerometers and iSensor® MEMS accelerometer subsystems provide accurate detection while measuring acceleration, tilt, shock, and vibration in performance driven application. Our portfolio leads the industry in power, noise, bandwidth, and temperature specifications, and offers a range of MEMS sensor and signal conditioning integration on chip. Our MEMS-based Circuits from the Lab® reference designs have been built and tested by ADI experts to help you jumpstart your next system design.
-
Product
90-Degree Optical Hybrid
-
Six-port hybrid devices have been used for microwave and millimeter-wave detection systems since the mid-1990s and are a key component for coherent receivers. In principle, the six-port device consists of linear dividers and combiners interconnected in such a way that four different vectorial additions of a reference signal (LO) and the signal to be detected are obtained. The levels of the four output signals are detected by balanced receivers. By applying suitable baseband signal processing algorithms, the amplitude and phase of the unknown signal can be determined.
-
Product
3-Slot Data Acquisition Mainframe With GPIB And Three 20-Channel Multiplexer Modules
DAQ973MB
Mainframe
The DAQ973MB Better Multiplexer Bundle offer includes a DAQ973A three-slot data acquisition mainframe and three 20-channel DAQM901A multiplexer modules. This bundle provides the following:3-slot mainframe with USB, LAN, and GPIB6.5-digit (22-bit) internal DMM60 channels of multiplexer switches6 channels of dedicated current measurements2- and 4-wire scanning300 V switching80 channels/s scanningbuilt-in thermocouple reference junctionbuilt-in signal conditioning to measure thermocouples, RTDs and thermistors, AC / DC volts and current; resistance, frequency / period, diode test, and capacitance
-
Product
8-Channel ADC Module
FMC107
-
Sundance Multiprocessor Technology Ltd.
The FMC107 is an eight-channel ADC FMC (FPGA Mezzanine Card) which is fully compliant with the VITA 57.1-2010 standard. The FMC107 card provides eight 12-bit 65 MSPS A/D channels which can be sampled by an internal clock source (optionally locked to an external reference) or an externally supplied sample clock. A trigger input for customized sampling control is also available. The FMC107 has the LPC (Low-Pin Count) 160-Pin connector, front panel I/O, and is conduction cooled compliant. The board is also available with Mil-I-46058c compliant Conformal Coating.
-
Product
Thermocouple Kit
34307A
-
The Keysight 34307A is compatible with the Keysight 34970A Data Acquistion/Switch Unit. The 34307A can also be used with the Keysight 34401A, 34460A or 34461A, however, an external program is required to convert the voltage measurements to temperature and an ice bath or electronic reference junction must be used.
-
Product
Ultra-Low Noise, Precision Voltage Reference
ISL21090
-
The ISL21090 is an ultra-low noise, high DC accuracy precision voltage reference with a wide input voltage range. The ISL21090 uses Renesas' advanced bipolar technology to achieve sub 1.0µVP-P (1.25V option) 0.1Hz to 10Hz noise with an initial voltage accuracy of 0.02% (2.5V option).
-
Product
Optical Chopper
SR540
-
Stanford Research Systems, Inc.
The SR540 chopper will handle all your optical chopping requirements?from simple measurements to dual-beam and intermodulation experiments. The SR540 has a 4-digit frequency display, front-panel frequency control, analog voltage frequency control and two reference outputs with selectable operating modes.
-
Product
4 Digit API Panel Mounted
TA-902
-
This is our latest API model and it comes packaged in a one-eight DIN size extruded aluminum enclosure. This size allows for direct replacement of other panel mounted API's for a more compact panel mount option. This unit has same features as our TA-900 unit and can be modified to work with non-standard square wave references as in theS-TEC 6443.
-
Product
Electrometer
MAX4000
-
Reference grade instrument for use in a wide range of radiation therapy applications, including external beam, low dose, high dose, intravascular brachytherapy, diagnostic x-ray, and mammographic x-ray.
-
Product
Screen-Printed Carbon Electrode With Ag/AgCl Reference (RE)
SPE01
-
A screen-printed silver (Ag) reference electrode designed for electrochemical sensing, biosensor development, environmental monitoring, and laboratory research with excellent reproducibility and customizable electrode configurations.
-
Product
Low Cost Microwave Wideband APD Preamp Receivers
MR11 (40KHz~18GHz)
-
Hangzhou Huatai Optic Tech. Co., Ltd.
MR11 series microwave wideband optical receiver, adopts high Sensitivity APD diode and Low Noise Preamplifier IC, within bandwidth of 40KHz~18GHz, 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 wideband microwave application. Due to avoidance of using expensive coaxial cable or wave-guide, there will be no limitation in transmission distance, which improves the signal quality and reliability of the microwave communication. They can be widely applied in microwave communication system such as remote wireless, timing and reference signal distribution, telemetry, measurement and delay line etc as well as 10Gb/s high speed communication system.
-
Product
Shunt Voltage References
-
Analog Devices offers a broad line of shunt precision voltage references that combine excellent accuracy and temperature stability with low noise and small packages. These devices operate in a manner that is functionally equivalent to a Zener diode. The bias current must be set higher than the sum of the maximum quiescent current of the voltage reference and the maximum expected load current. Since shunt voltage references are typically biased with a resistor, the voltage reference can operate on a wide range of input voltages.
-
Product
16-Channel 250 MHz A/D with Multiband DDC, Kintex UltraScale FPGA - 6U VPX
Model 58132
-
- Jade Xilinx Kintex UltraScale FPGA Products and Navigator Design Suite Software Video- Jade Xilinx Kintex UltraScale FPGA Family Brochure- Complete radar and software radio interface solution- Supports Xilinx Kintex UltraScale FPGAs- 16 250 MHz 16-bit A/Ds- 16 wideband DDCs (digital downconverters)- 128 multiband DDCs- 10 GB of DDR4 SDRAM- Sample clock synchronization to an external system reference- LVPECL clock/sync bus for multiboard synchronization- PCI Express (Gen. 1, 2, &3) interface up to x8- Optional LVDS and gigabit serial connections to the FPGA for custom I/O- Ruggedized and conduction-cooled versions available
-
Product
Adjustable High Frequency Reference Ballast
HCS-109A
-
HCS-109A Adjustable High Frequency Reference Ballast also called High Frequency Current Source. Comparing to IEC Test Method, HCS-109A is an Equivalent Test Method which is economic solution. HCS-109A equipped with Spectrophotometer & Integrating Sphere Test System. It can also measure the photo, color and electricity parameters for high frequency fluorescent lamp.Specifications: • Input voltage: 200V~240V, 50/60Hz • Input Power: 80 W max • Output Current: 130mA~400mA (Adjustable), accuracy: +/- 1% • Output Frequency: 25kHz< +/-2.0% (Adjustable), accuracy: +/- 0.3kHz • Output current total harmonic wave distortion: THD<2.5% (HF current wave)
-
Product
Imaging Photometer & Colorimeter
LumiTop 4000 / 2700
-
Instrument Systems Optische Messtechnik GmbH
The patented optical design permits simultaneous measurement of all three sensors in one shot. The accurate spectral measurement is used as a live reference and transferred to the complete display area of the camera. This makes for extremely short measurement times and all relevant optical tests are conducted in a single test station.
-
Product
Multi-Channel Clock Generator
XCLK1
-
Curtiss-Wright Defense Solutions
High-speed analog IO acquisition systems need a high quality master reference sample clock.Accurate synchronization in the 100MHz and up frequency domains is not easy and it’s a critical performance limiting factor if not done well. The XCLK1 multi-channel clock generator solves these problems.
-
Product
Humidity calibration with humidity calibrator
HUMOR 20
-
The role of humidity calibrations that are accurate, reproducible, and documentable is becoming more and more important. The humidity calibrator HUMOR 20 developed by E+E is the ideal reference instrument for these requirements and is traceable to international standards. The HUMOR 20 can be used in the humidity range of 10-95% RH both for monitoring cylindrical sensors and also for monitoring instruments with cubic dimensions.
-
Product
Gas Filter Correlation CO2 Analyzer
Model N360
-
Teledyne Advanced Pollution Instrumentation
The Model N360 measures carbon dioxide (CO2) by comparing infrared energy absorbed by a sample to that absorbed by a reference according to the Beer-Lambert law.The N360 uses Gas Filter Correlation (GFC) to overcome the interfering effects of various other gases (such as water vapor) that also absorb IR. The analyzer passes the IR beam through a spinning wheel made up of two separate chambers: one containing a high concentration of CO2 known as the reference, and the other containing a neutral gas known as the measure. The concentration of CO2 in the sample chamber is computed by taking the ratio of the instantaneous measure and reference values and then compensating the ratio for sample temperature and pressure. A nitrogen purge system is provided for the GFC wheel assembly to eliminate the effects of ambient CO2, if necessary.
-
Product
Source / Measure Units
-
A Source/Measure Unit, or SMU, is a source and measurement resource for test applications requiring high accuracy, high resolution and measurement flexibility. SMUs are sometimes also referred to as source monitor units. An SMU can precisely force voltage or current and simultaneously measure voltage and/or current.
-
Product
Firmware
-
Field-Programmable Gate Arrays (FPGAs) are an ideal fit for data acquisition systems as they offer unparalleled real-time signal processing power. Moving functionality from the host PC to the on-board FPGAs helps offload the PCs central processing unit (CPU) and relaxes data transfer rate requirements. This capability is key in achieving the performance levels needed in many of today's leading-edge applications.All our data acquisition and generation modules host Xilinx FPGAs and are delivered with pre-installed general data acquisition firmware (for ADQ7 and ADQ14 we refer to this firmware as "FWDAQ"). In addition to the standard/default firmware, we also offer optional firmware development kits (available for all models) and application-specific firmware packages (available for ADQ7 and ADQ14 only). More information about these below.
