Articles
Nanovolt design challenge : Build your own open-source nanovolt-grade DCV meter…
Author: Illya Tsemenko
Published: 02 September 2021 Join the friendly contest challenge with your open-hardware nanovoltmeter project and a chance to get unique 10.00000 VDC xDevs.com QVR-A reference.

Guildline 6675A resistance bridge review and experiments
Author: Illya Tsemenko
Published: 16 August 2021 Review and experiments with ultra-precision direct-current comparator bridge.

HP/Agilent 66** series system DC power supplies
Author: Illya Tsemenko
Published: 29 March 2021 Overview and benchmarks of 66**A series precision linear DC power supplies from HP and Agilent.

Large DIY environmental chamber for DMM/T&M gear testing
Author: Illya Tsemenko
Published: 21 February 2021 Low-cost precision thermal/environmental chamber design and build worklog.

Tale 2 : eBay LTZ1000A reference modules and caveats
Author: Illya Tsemenko
Published: 23 December 2020 Recent experience with buying two LTZ1000A-based modules from eBay.

Modification for Fluke 8508A DMM, DIY Option 001
Author: Illya Tsemenko
Published: 23 December 2020 Adding rear 5-way terminals to 8½-digit Fluke 8508A DMM for ratiometric and scanner functionality.

Fluke 510A AC standard, or how to calibrate HP/Agilent 34401A for ACV ranges
Author: TEKTRON
Published: 13 December 2020 Experiments for calibrating HP/Agilent 34401A for AC Voltage and Fluke 510A standard review/mods.

Modification for guarded current output in Fluke 5720A
Author: Illya Tsemenko
Published: 27 September 2020 Modification for additional guarded output capability in Fluke 5700A/5720A front panel inteface.

Fluke 742A resistance standards
Author: Illya Tsemenko
Published: 15 September 2020 Benchmarks and test results of various Fluke 742A resistance standards.

ESI SR1010, SR1030 and SR1050 series resistance ratio transfer standards
Author: Illya Tsemenko
Published: 06 September 2020 Benchmarks, teardowns and performance of ESI SR1010, SR1030 and SR1050 hammon dividers.

Acopian AC-DC Linear power supply
Author: Illya Tsemenko
Published: 01 August 2020 Review and tests of Acopian Gold series A24MT350 +24V 3.5A linear DC power supply

EIP/PhaseMatrix 578B Locking microwave counter
Author: Illya Tsemenko
Published: 01 August 2020 Review and tests of EIP / PhaseMatrix 578B 10Hz - 110 GHz counter with locking capability

High-current resistance measurements
Author: Illya Tsemenko
Published: 08 July 2020 Comparison of various high-power resistance standards

Review and tests of Femto HVA low-noise amplifier
Author: Illya Tsemenko
Published: 21 April 2020 Testing Femto HVA DC-10MHz 40/60 dB low noise amplifier

Teardown : Fluke Y2022
Author: Illya Tsemenko
Published: 12 April 2020 Teardown and analysis of Fluke Y2022 10:1 / 10:100 divider

Teardown : Fluke 7405A-4207 divider module
Author: Illya Tsemenko
Published: 12 April 2020 Quick teardown of Fluke 7405A-4207 precision divider accessory.

Wavetek 4953 10A AC/DC precision shunt review
Author: Illya Tsemenko
Published: 13 February 2020 Tests and characterisation of Wavetek 4953 10A AC/DC shunt performance.

Setting up a SZA263/LTFLU voltage reference
Author: Dipl.-Ing. André Bülau
Published: 02 December 2019 Introduction to solid-state reference REFAMP design, using Motorola SZA263 or FLUKE/Linear LTFLU.

Calibration procedure and results for xDevs/Fluke 792X 10V DC Reference
Author: Illya Tsemenko
Published: 06 November 2019 Calibration methods and reports for xDevs.com's 10V DC reference, built into modified Fluke 792 Power Pack chassis.

Fluke 8505A Teardown and repair worklog
Author: Razvan C.
Published: 10 October 2019 Repair worklog of the Fluke 8505A, precision 6½-digit benchtop multimeter from year 1982.

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