Reference Transmitters
high quality optical transmitters for test and measurement.
See Also: References, Reference Standards, Reference Antennas, Reference Decoders, Reference Jumpers, Reference Sources, Reference Transformers, Acoustical References, Frequency References, Solar Reference Cells, Fiber Optic
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PAM4 Optical Reference Transmitters
ModBox-PAM4 series
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The ModBox-PAM4 serie is a 4-level Pulse Amplitude Modulation (PAM4) Optical Reference Transmitters that generate excellent quality PAM4 optical data streams up to 28 Gbaud, 56 GBaud. The ModBox-PAM4 integrates also: ER4 / LR4: CWDM or LAN-WDM 4 lasers sources, SR4: 850nm laser source, PON: 1310 nm and 1490 nm laser sources.
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High-Speed, Fiber-Optic Reference Transmitters
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Thorlabs' Reference Transmitters are designed for high-speed fiber optic test and measurement applications. They are fully-integrated and user-configurable solutions based on proven lithium niobate (LiNbO3) modulator technology driven by high-fidelity RF amplifiers.
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Reference Transmitter
81492A
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Keysight's 81492A Reference Transmitter is designed to offer excellent eye quality for NRZ and PAM4 signals at baud-rates up to 56 Gbaud and can serve as universal single-mode E/O converter. In addition to the internal lasers at 1310 & 1550 nm, an external optical input for usage with tunable laser sources is available. It is fully integrated into Keysight’s Optical Receiver Stress Test solutions to address test requirements of IEEE 802.3 10,40,100 and 400GBASE optical standards.
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Transmitters
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We offer reference transmitters for both digital and linear applications, calibrated electrical-to-optical converters for use with VNAs, and optical transmitters with phase modulators. These devices are based on proven lithium niobate (LiNbO3) modulator technology driven by high-fidelity RF amplifiers.
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Optical Receiver Stress Test Solution
N4917B
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The N4917B software provides an automated standard compliant stressed receiver sensitivity test according to 100GBASE-LR4, ER4 and SR4 test specification. In order to do this kind of test, several test instruments such as a bit error ratio tester, digital sampling oscilloscope, optical reference transmitter and tunable laser source are required to operate together to achieve a compliant, repeatable optical stressed eye. This stressed eye is then fed to the receiver under test, where bit error ratio is measured under the stress conditions as defined in the standard.
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Product
Reference Transmitter
81491A
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Keysight's 81491A Reference Transmitter is designed to offer excellent eye quality for NRZ and PAM4 signals at baud-rates up to 32Gbaud and can serve as universal E/O converter. It comes in Multimode (MM) and Single-Mode (SM) flavors and includes internal lasers at 850nm (MM) or 1310&1550nm (SM). External optical input for usage with tunable laser sources is available for SM option. It is fully integrated into Keysight’s Optical Receiver Stress Test solutions to address test requirements of IEEE 802.3 10,40,100 and 400GBASE optical standards.
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Coherent Modulation Transmitter
IQTX
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Generating and controlling phase modulated optical signals is easy with the IQTX. The IQTX is referred to as a ‘Golden’ reference optical signal source because of its high repeatability and reliability.Its high bandwidth of 40 GHz ensures high quality optical signal generation, making it the ideal optical signal source for coherent communications applications.
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E-Band Signal Analysis Reference Solution
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The E-band signal analysis reference solution provides an effective measurement solution for today’s wideband signals as well as emerging communications standards. With the M1971E waveguide harmonic mixer, which provides a 55 to 90 GHz input; Keysight oscilloscopes, which provide excellent signal integrity; and the powerful 89600 VSA software, you have a high-quality wideband measurement solution. A simple user interface also provides integrated mixer setup, correction and LO optimization, allowing for accurate measurements.
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Rubidium Reference Oscillator
LPFRS-01
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Rubidium reference generator LPFRS-01 is designed to generate a highly stable reference and clock frequency signal.
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Intelligent Time Reference
TM-4™and TM-4/OEM™
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The Intelligent Reference/TM-4™ and TM4/OEM™ are multi- purpose, GPS disciplined timing signal generators and frequency references in economical off-the-shelf and custom configurations. Intended for use in a wide variety of timing, synchronization and frequency reference applications, they are based on the most advanced architecture Spectrum has ever offered, and include the most popular features of Spectrum's core platform for current timing products.
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Reference Temperature Sensors
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AMETEK Sensors, Test & Calibration
Our reference sensors can be used as your daily working-reference sensors in laboratory or field calibration applications. A large selection of types are available, including; straight, 90 degree angle, 4 mm or 1/4”. The superior design and specifications combined with a long history of reliability and low drift have made the STS probes the working-standard in many EN/IEC 17025 accredited laboratories worldwide. The DLC sensors are a part of our patented Dynamic Load Compensation system.
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Reference Temperature Calibrator
JOFRA™ RTC-187
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AMETEK Sensors, Test & Calibration
RTC-187 provides high-quality temperature measurement from -45 to 180°C. The 180°C is a 25° expansion over the range of the RTC-157, and it’s now the hottest temperature available for a calibrator that also supplies cold temperatures.
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Product
Transmitter
5081
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The Model 5081 family of transmitters can be used to measure pH, ORP, conductivity (using either contacting or toroidal sensors), resistivity, oxygen (ppm and ppb level), free chlorine, total chlorine, and ozone in a variety of process liquids.
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Temperature Transmitter
T0410
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Temperature transmitter is built in a durable watertight case. Degrees Celsius and Fahrenheit are user selectable. Large dual line LCD is an advantage. Display is possible to switch off. Computerized design ensures maximum long term stability and fail indication.
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Reference Solutions
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As you seek solutions to evolving test challenges, Keysight Reference Solutions provide the right combination of hardware, software, and measurement expertise through programming examples highly optimized for specific applications. Reference Solutions show you how to get the most out of your test equipment, helping you achieve half the time to insight.
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AC Reference Generators
SR21
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Computer Conversions Corporation
The SR Series are miniature, low cost AC reference generators designed to supply 26 or 115 volt excitation to synchros or resolvers in military and industrial control applications. They accept +/-15V DC and provide up to 5VA of transformer isolated output power. These converters are packaged in PC card mounting modules 2.6”x3.1”x1”H.
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Conductivity Transmitter
DO9766T-R1
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output of a conductivity electrode with temperature compensation into a 4÷20 mA signal.
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Reference Thermapen®
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Until now you would have spent hundreds more to get this level of accuracy in a NIST-Traceable standards thermometer. Our Reference Thermapen takes lab accuracy into the field. Each unit is factory calibrated at 5 test points and includes a UKAS accredited calibration certificate with test data. A true "system calibration" is performed matching its Platinum RTD sensor and the built-in electronics so all errors are included in the spec.
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Transmitters
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Seismic transmitters provide a 4-20mA DC signal output proportional to the vibration amplitude, and are ideal for applications where a PLC, DCS, or other automation system will be used instead of a stand-alone vibration monitor. Metrix offers seismic transmitters with a wide variety operating temperatures, frequency responses, scale factors, case materials, connector types, mounting options, and hazardous area approvals.
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Solar Reference Cell
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The Solar Reference Cells consist of a 20 mm x 20 mm monocrystalline silicon Photovoltaic Cell encased in a 92 mm x 70 mm x 16 mm metal enclosure with a protective quartz window and a temperature sensor. Designed for calibrating the irradiance of solar simulators used for testing solar cells and modules.
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M2T Transmitter
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The M2T half-rack transmitter houses two stereo transmitters to provide two stereo audio channels, and for up to four mono audio channels in a single rack space. The audio inputs can be individually configured to be analog or Dante compatible. The analog input connectors are full-size XLR/TRS combo types for balanced line-level analog signals while the input preamp circuits use a special balanced amplifier with very high common mode rejection to minimize hum and noise. A Dante™ Ultimo™ interface via dual RJ45 connectors accepts Dante networked audio inputs and can daisy chain the digital stream to additional units via CAT6 cables. An additional RJ45 jack provides an Ethernet connection for programming and control via Wireless Designer™ software and a USB jack on the front panel allows for firmware updates. The transmitter features a full color, backlit LCD for high visibility in any environment, while the chassis is all-metal and can be racked singly or in pairs using included rack mount hardware.
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Reference Detect Switch
RDS Series 1.5” x 1.5” x 0.6”
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*Connectorized Package *Internal/External Reference Detect Switch *Standard Internal TCXO (±2.5 ppm) *Optional Internal OCXO (±90 ppb)
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Temperature Transmitter
H4431
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For external Pt1000 temperature probe. Three two-state inputs.
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Universal Transmitter
Model LXT-380
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Teledyne Analytical Instruments
The Model LXT380 transmitter is a single or dual channel, intelligent, multi-parameter designed for the online continuous measurement of pH, ORP, Specific Ion (pION), dissolved oxygen, free chlorine, total chlorine, conductivity and resistivity. The Model LXT380 Tramsitter digitally communicates with the SP3X digital sensor, automatically configuring the trasmitter's menues and display screens to the measured parameter. The LXT380 tramsitter can be Loop powered or 4-wired DC powered. The standard configuration has a 4-20 mA and a serial communication port with MODBUS RTU output. Alarm relays option is only available on 4-wired DC powered transmitters. LXT380 Transmitter loop is available in FM, ATEX and IECEx certifications.
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WSPR_TX_LP1 Transmitter
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The WSPR-TX LP1 works on any Ham band from 136kHz to 70MHz and is powered from 5V.Once you have set up your call-sign it will operate independently indoors or outdoors with minimal requirement of interaction from the user.There is no need to have it connected to a computer, no need to set the time or to interact with it in any way. The WSPR-RX_LP1 takes care of everything needed automatically for you.
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Reference Magnets
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Reference Magnets provide a stable and convenient method to verify the accuracy and calibration of Hall Effect Gaussmeters, Teslameters, and Probes.
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Nonferrous Metal Reference Materials
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NCS Testing Technology Co., Ltd.
Nonferrous Metal Standards
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Pressure Transmitters
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Ultra-compact pressure transmitter with recessed diaphragm. *Pressure ranges up to 600bar / 8700psi*Reference accuracy +/- 0.25%*Superior temperature stability*Two-wire 4...20mA
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Wind Transmitters
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Comptus wind speed and direction transmitters convert the sensor signals into electrical outputs suitable for connection to displays, computers, dataloggers, wireless transmitters, or other controls. Output options include: 0-1 mA, 0-1 V, 0--5 V or 4-20 mA. Power options include: 24 VAC, 120VAC, 230VAC, 12-24 VDC. Comptus transmitters come standard in a track mount for installation in existing enclosures. They are also available in NEMA rated enclosures. Please contact us for enclosure options.





























