Teledyne LeCroy - Transmission Line Probes
Transmission line probes are a special type of passive probe designed for use at very high frequencies. They replace the high impedance probe cable found in a traditional passive probe with a precision transmission line, with a characteristic impedance that matches the oscilloscope input (50 Ohm). This greatly reduces the input capacitance to a fraction of a picofarad, minimizing the loading of high frequency signals. A matching network at the tip increases the DC input resistance. While they have lower DC input resistance than a traditional passive probe (usually 500 Ohm) to 1kOhm), the input impedance of these probes remains nearly constant over their entire frequency range. A traditional /10 passive probe will have a 10 MOhm) input impedance at DC, however this impedance drops rapidly with frequency, passing below the input impedance of a transmission line probe at less than 100 MHz.
Transmission line probes are a special type of passive probe designed for use at very high frequencies. They replace the high impedance probe cable found in a traditional passive probe with a precision transmission line, with a characteristic impedance that matches the oscilloscope input (50 Ω). This greatly reduces the input capacitance to a fraction of a picofarad, minimizing the loading of high frequency signals. A matching network at the tip increases the DC input resistance. While they have lower DC input resistance than a traditional passive probe (usually 500 Ω to 1kΩ), the input impedance of these probes remains nearly constant over their entire frequency range. A traditional ÷10 passive probe will have a 10 MW input impedance at DC, however this impedance drops rapidly with frequency, passing below the input impedance of a transmission line probe at less than 100 MHz.
In some applications, transmission line probes offer advantages over active probes. In addition to being less expensive, their passive design is more robust to over voltage and ESD exposure. They are useful in applications producing fast rising, narrow pulses with amplitudes which exceed the dynamic range of active probes. They also tend to have less parasitic effects on frequency response. A high BW transmission line probe driving a sampling oscilloscope can be used as a "golden standard" in situations when the response of an active probe measurement is questioned.
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Electrical Characteristics |
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|---|---|
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Bandwidth |
DC to 7.5 GHz |
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Risetime |
< 47 ps |
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Input C |
< 0.25 pF |
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Input R |
500 Ω (÷10 cartridge) 1000 Ω (÷20 cartridge) |
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Maximum Voltage |
15 V rms |
|
Cable Length |
1 m |
More Product Information
- Allows TekProbe interface level II probes to work with any ProBus-equipped Teledyne LeCroy oscilloscope
- Automatic probe detection
- Provides all necessary power and offset control to the attached probe
- Supports probes up to 4 GHz
- Easy firmware updates
- Wide variety of probes supported including: Preamplifiers, Current Probes, Single-Ended Active Probes and Differential Active Probes
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Fully isolated experiment space for true 4K temperatures during probing
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Cryogenic positioners to provide large travel ranges without warming up the device
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Flexible thermal jumpers to ensure high thermal conductance and low mechanical transmission
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A soft vacuum bellows provides a compliant mounting interface for the cryocooler
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Quick release vacuum feedthroughs for easy configurability
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A large rectangular port for high signal capacity
See more Key Features in Specifications & Details tab
- Up to 4 GHz Bandwidth
- ±60 V Offset Capability
- ±800 mV Dynamic Range
- 50 kΩ DC Input Impedance
- 1.2x Attenuation for low additive noise
- MCX terminated cable with wide variety of connections:
- Solder-in (4 GHz)
- Coaxial Cable to U.FL receptacle (3 GHz)
- MCX PCB Mount (4 GHz)
- Browser (500 MHz)
- ProBus Interface
An impedance tuner is an apparatus, which generates controllable reflection factor (Impedance) over a certain frequency range. Focus uses two basic technologies:
a) For frequencies from 100MHz to 110GHz (and above) we use the slide screw technique (models Multi Harmonic MPT, wideband (fundamental) CCMT, harmonic rejection PHT), in which a reflective probe (slug) is inserted into the slot of a low loss slotted transmission line (slabline or waveguide).
b) For frequencies from below 10MHz to 170MHz we use a lumped element technology (models LFT), whereby variable capacitors are connected with optimized lengths of coaxial cable.
- Four operating modes: – CC, CV, CR, CP
- Static, Dynamic and Sequence mode support
- Built in Application Functions - Short Circuit Test, Battery Test Mode, CR-LED Mode, OCP and OPP Test
- Provides a load of up to 300 Watts
- Programmable and analog external control
- Highest resolution – 12 bits all the time
- More capability – integrates multiple instruments into one
- Comprehensive probe support – supports over 30 probes in 9 categories
- MAUI with OneTouch user interface for intuitive and efficient operation
- DigRF v4 Decodes
- Low-speed (26 Mb/s)
- Medium-speed (1248 Mb/s)
- High-speed (1456 Mb/s)
- DigRF v3 Decodes
- Low-speed (6.5 Mb/s)
- Medium-speed (26 Mb/s)
- High-speed (312 Mb/s)
- Convert DigRF 3G and v4 I and Q digital data to corresponding analog waveforms
- Correlate analog waveforms with protocol decode on one screen
- View decoded data in hexadecimal format
- Decode information expands as the time base is adjusted or zoomed
- Convenient table display with quick “Zoom to byte” capability
- Quick search capability for specific message packets
- Up to 20 GHz bandwidth and 80 GS/s sample rate
- The most advanced oscilloscope user interface
- The industry’s only true hardware 14.1 Gb/s serial trigger
- Low Jitter Measurement Floor and exceptional timebase stability
- Comprehensive set of serial data analysis, debug, validation and compliance tools
- Integrated 50 Ω and 1 MΩ inputs for true connection and probing flexibility
- Integrated standard and custom measurements and math functions for unrivaled analysis capability
- Multi-lane serial data eye, jitter and crosstalk analysis
- Real-time de-embedding, emulation, and equalization
Fully Integrated: With the ProBus™ interface, the AP033 becomes an integral part of the oscilloscope. The probe sensitivity and offset can be controlled from the oscilloscope front panel, the probe front panel, or by using remote control commands (GPIB or RS-232). Sensitivity, offset, input capacitance, and common mode voltage range are displayed on the oscilloscope screen. When used with a LeCroy digital oscilloscope, no external power supply is required.
Teledyne LeCroy
Teledyne LeCroy is a leading provider of oscilloscopes, protocol analyzers and related test and measurement solutions that enable companies across a wide range of industries to design and test electronic devices of all types. Since our founding in 1964, we have focused on creating products that improve productivity by helping engineers resolve design issues faster and more effectively.
Oscilloscopes are tools used by designers and engineers to measure and analyze complex electronic signals in order to develop high-performance systems and to validate electronic designs in order to improve time to market. Protocol analyzers are tools used by designers and engineers to generate and monitor traffic over high speed serial data interfaces, including DDR, PCI Express, Fibre Channel, Serial ATA, SAS, USB and others. Both products are critical in the development of a wide variety of demanding design applications.
We utilize both of these important product areas in combination to tackle the most demanding serial data test applications, offering tailored solutions to help our customers perfect their chips, interfaces, subsystems and products which utilize these important communications standards. With the explosion in the use of serial data communications technologies in semiconductors, between devices on circuit boards and between computers and peripherals, we are aimed at a growing and important market.
Our oscilloscopes offer a powerful combination of large and informative displays combined with advanced waveshape analysis capabilities typically tailored to enhance the productivity of engineers in specific applications areas such as serial data test, disk drive test and automotive bus analysis.
Headquartered in Chestnut Ridge, New York, LeCroy has sales, service and development subsidiaries in the US and throughout Europe and Asia. LeCroy products are employed across a wide variety of industries, including semiconductor, computer, consumer electronics, military/aerospace, automotive/industrial, and telecommunications.
Contact Details
Headquarters Teledyne LeCroy
700 Chestnut Ridge Road, Chestnut Ridge, NY 10977-6499, USA
Phone: 800-553-2769 or 845-425-2000
Phone Support: 1-800-553-2769
Fax Sales: 845-578-5985
Email Sales: contact.corp@teledynelecroy.com
Email Support: support@teledynelecroy.com (Oscilloscopes, Waveform Generators, Signal Integrity)
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