HP/Agilent 66** series system DC power supplies
Created: 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
Created: 21 February 2021
Low-cost precision thermal/environmental chamber design and build worklog.
Low noise switch-mode DC-DC power supply
Created: 18 January 2021
Design and performance benchmarking of very low noise DC-DC power supply, based on Linear LT1683 IC.
Tale 2 : eBay LTZ1000A reference modules and caveats
Created: 23 December 2020
Recent experience with buying two LTZ1000A-based modules from eBay.
Modification for Fluke 8508A DMM, DIY Option 001
Created: 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
Created: 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
Created: 27 September 2020
Modification for additional guarded output capability in Fluke 5700A/5720A front panel inteface.
Fluke 742A resistance standards repairs, stability and performance review
Created: 15 September 2020
Benchmarks and test results of various Fluke 742A resistance standards.
IET & ESI SR1010, SR1030 and SR1050 series resistance ratio transfer standards
Created: 06 September 2020
Benchmarks, teardowns and performance of ESI SR1010, SR1030 and SR1050 hammon dividers.
Acopian AC-DC Linear power supply
Created: 01 August 2020
Review and tests of Acopian Gold series A24MT350 +24V 3.5A linear DC power supply
EIP/PhaseMatrix 578B Locking microwave counter
Created: 01 August 2020
Review and tests of EIP / PhaseMatrix 578B 10Hz - 110 GHz counter with locking capability
High-current resistance and shunt measurements log
Created: 08 July 2020
Comparison of various high-power resistance standards
Review and tests of Femto HVA low-noise amplifier
Created: 21 April 2020
Testing Femto HVA DC-10MHz 40/60 dB low noise amplifier
Teardown : Fluke Y2022
Created: 12 April 2020
Teardown and analysis of Fluke Y2022 10:1 / 10:100 divider
Teardown : Fluke 7405A-4207 divider module
Created: 12 April 2020
Quick teardown of Fluke 7405A-4207 precision divider accessory.
Wavetek 4953 10A AC/DC precision shunt review
Created: 13 February 2020
Tests and characterisation of Wavetek 4953 10A AC/DC shunt performance.
Setting up a SZA263/LTFLU voltage reference
Created: 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
Created: 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
Created: 10 October 2019
Repair worklog of the Fluke 8505A, precision 6½-digit benchtop multimeter from year 1982.
xDevs.com QVR - Ultra-low noise DC Voltage reference
Created: 20 September 2019
Design and benchmarks QVR - multi-cell quad LTZ1000A/ADR1000 DC voltage reference module.
Repair, testing and experiments with Ballantine 1605B
Created: 17 September 2019
Maintenance and experiments with Ballantine AC/DC Autobalance Transfer Standard
Ian Johnston's PDVS2mini prototype review and testing
Created: 09 September 2019
Benchmarking LM399AH-based compact PDVS2 mini Precision DC source from Ian Johnston.
Leo Bodnar's fast pulser (2.92mm version) review
Created: 30 July 2019
Review of Leo Bodnar's 30ps fast pulse 10 MHz generator.
Arroyo TECpak temperature controller unit review and usage
Created: 23 June 2019
Test of Arroyo TECpak 585-04-08 temperature controller module.
Updated 2019 SI units transfers and tour of ITRI CMS NMI Labs @xDevs
Created: 24 May 2019
SI 2019 Update and practical example for unit of Volt and Ohm transfers
Review and modifications for Agilent 16441A R-Box
Created: 25 March 2019
Experiments with Agilent 16441A
Review and testing of various precision 1 Ohm resistors
Created: 18 March 2019
Stability and performance tests on VHP-4, JRL and IET 1 Ohm resistors.
Building air-bath thermal Peltier chamber
Created: 07 March 2019
Low-cost take on benchtop thermal chamber with airflow mixing, using Peltier element and PID controller.
Review and calibration of Advantest R6452A 5.5-digit DMM
Created: 02 March 2019
Teardown and calibration testing of 5.5-digit benchtop Advantest DMM
Keithley 6430/4200 preamplifier teardown and stand-alone use options
Created: 14 January 2019
Attempt of reusing Keithley 4200 PreAmplifier module for regular SMU.