Tag Archive for Analog

Keysight Keysight UXR 110GHz BW, 256GS/s, 10-bit, 4-Channel Real-Time Oscilloscope Teardown & Experiments

In this episode Shahriar takes a look at one of the most advanced electrical test and measurement instruments ever created. The Keysight UXR-Series Real-Time Oscilloscope brings 110GHz of analog bandwidth and 256GS/s real-time sampling at 4-channels simultaneously. To make it even more impressive, the entire data-conversion architecture is in 10-bits. This implies that the instruments captures, processes, stores and displays over 10Tb/s of information.

Various architectures of state-of-the art oscilloscopes from Keysight, LeCroy and Tektronix are examined and compared against the new real-time architecture of the UXR-Series oscilloscope. The teardown of the front-end 110GHz module along with the data acquisition board is presented and analyzed in detail. The instrument showcases a wide range of Keysight technologies implemented in various technologies such as InP, SiGe BiCMOS, 65nm CMOS and 28nm CMOS nodes. In combination with Hyper-Cube memory module, data can be captured at 256GS/S from all 4-channels at the same time. Several variants of the UXR-Series oscilloscope will be available from 13GHz to 110GHz bandwidths.

A new calibration probe is also introduced based on the Keysight InP process capable of producing signal edges with sub-3.5ps of rise/fall times with NIST traceable calibration data. This enables users to perform NIST alignment and bandwidth calibration on site without needing to send the instrument back to Keysight.

Several measurements with the scope demonstrates its extraordinarily low noise floor, jitter as well as the capability of the new probe module for instrument calibration. The 110GHz 4-channel variant of the UXR-Series oscilloscope has an MSRP of $1.3 Million US dollars.

Teardown, Repair and Analysis of an Agilent 4338B (10uΩ – 100kΩ) Milliohmmeter

In this episode Shahriar repairs an Agilent 4338B milliohmmeter. This instrument is capable of measuring extremely small resistances down to 10uΩ while maintaining a DUT voltage of less than 20mV. The instrument powers on with the message ADC Failure. Investigation reveals that the instrument uses an obsolete ADC which must be removed from the board in order to reverse engineer its operation. While the ADC turns out to be functional, a PAL device which controls the ADC timing is faulty. A new device is salvaged from a donor board to complete the repair. The instrument is then used to measure several small known resistances.

Teardown, Repair and Experiments with an Agilent E4981A High-Speed Capacitance Meter

In this episode Shahriar investigates an Agilent E4981A high-speed capacitance meter which fails self-test during startup. The instrument reports a series of errors associated with the CPU board. The teardown reveals a multi-board construction where the main analog assembly employs an FPGA for control and interface to the main CPU board. The unit has a disconnected ribbon cable between the analog board and the main CPU assembly. After correcting the problem the instrument completes self-test without errors.

After the repair the unit is used to measure several known capacitors for functionality verification. Finally the instrument is used to measure a hand-made parallel plate capacitor. The capacitor can accept various types of dielectric material whose impact is studied.

Five Interesting Things! July 2018

In this episode Shahriar presents 5 interesting things from around the lab! The topics range from optics to microwave components. The video is organized at follows:

00:38 – Pasternak 12GHz-14GHz continuously tuneable 20dB attenuator. How does it work?
11:02 – Ultra-high efficiency triple jacket glass distillation dewar.
14:59 – AWG PLC 8-way WDM splitter on 50GHz channels.
24:15 – PCB embedded D-Band waveguide with Vivaldi launch end-points.
28:45 – Hidden security features of the Canadian currency.

International Microwave Symposium 2018 – Industry Trade Show Overview

In this episode Shahriar presents an overview of a small portion of the vendors present on the exhibition floor at the International Microwave Symposium 2018.

The IEEE MTT International Microwave Symposium (IMS) is the premier annual international meeting for technologists involved in all aspects of microwave theory and practice. It consists of a full week of events, including technical paper presentations, workshops, and tutorials, as well as numerous social events and networking opportunities. The symposium also hosts a large commercial exhibition. Co-located with IMS are the IEEE RFIC, IMBioC and ARFTG conferences.


The video is organized as follows:

00:00:08 – Introductions
00:02:21 – Keysight Technologies (www.Keysight.com)
00:12:25 – Rohde & Schwarz (www.rohde-schwarz.com)
00:21:12 – X-Microwave (www.xmicrowave.com)
00:26:49 – MPI-Corporation (www.mpi-corporation.com)
00:33:34 – Siglent Technologies (www.siglentamerica.com)
00:36:56 – Signal Hound (www.signalhound.com)
00:40:34 – Mini-Circuits (www.minicircuits.com)
00:44:39 – Pico Technology (www.picotech.com)
00:48:11 – Virginia Diodes Inc. (www.vadiodes.com)
00:50:21 – SAF Tehnika (www.saftehnika.com)
00:52:28 – LPFK (www.lpkf.com)
00:55:45 – Teledyne Technologies (www.teledyne.com)
00:56:55 – Maury-Microwave (www.maurymw.com)
00:58:20 – Noisecom & Boonton (www.noisecom.com)
01:00:00 – Guzik Technical Enterprises (www.guzik.com)
01:03:00 – Connectronics Inc. (www.connectronicsinc.com)
01:03:43 – A.J. Tuck Company (ajtuckco.dyndns.org)
01:04:51 – HyperLabs Inc. (www.hyperlabsinc.com)
01:07:15 – Holzworth Instruments (www.holzworth.com)

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