Short photo-notes of August 15, 2018 lab works on calibrator and 8.5-digit Fluke DMM.
Short photo-notes of August 14, 2018 lab works.
Fresh acquisition of 16pcs custom VPG 1.000 Ohm resistors in TO-3 hermetic package.
xDevs.com attempts to restore complete Fluke 5720A calibrator.
xDevs.com builds some PTFE-insulated kelvin-type cables for precision resistance measurement and tests Caddock 5ppm/K spec resistors.
Addition to resistor test database.
Photos of components received in January’18 for xDevs.com projects.
Overall summary of xDevs.com progress in 2017.
Progress update on our projects and ideas
Free ppm-level DCV calibration program for owners of xDevs.com KX voltage reference module.
Detailed guide how to configure and use HP_Agilent_Keysight 82357A and 82357B GPIB adapter with Raspberry Pi is now released.
Addition to Datron 4800 information collection, PCB photographs from site reader
Decision was made to revert public site engine for English-only content.
User contribution: Advantest R3131
xDevs.com builds pair of triaxial low-noise cables on video. Start to finish.
New publication and teardown of big Agilent SMU mainframe.
After temporary connection outage March.8-March.12 side is back online now.
Possible for site connection issues, due to ISP system update and DNS changes.
TI ADS1262 EVM review article for Element14’s Roadtest program is now online.
Summary and our progress during year 2015, and some future plans. Happy New 2016!
Perhaps you wonder how Xmas looking for volt-nuts? Well, happy X-mas here, got some happy aged LTZ1000, LM399 and resistors to play with. Read in.
Article about our own ultra-stable LTZ1000/LM399 voltage reference is published. Check it out.
HP3245A Article added, with detailed repair procedure, boards overview and benchmarking.
Detailed article from TEKTRON is ready. Enjoy repair and modifications progress.
Digital domain and DC PCBA are fixed. Was working and passed selftest, but failed after a day of use.
Tomorrow will be first assembly with replaced parts and power on analog side. Full worklog
Cleaning rusty steel chassis frame of precision DMM HP 3458A. Article draft available here
Added new nano-voltmeter Keithley Model 182-M review and teardown. Useful tool for low-voltage measurements and noise analysis.
New step-by-step guide added, covering National Instruments GPIB-USB-HS interfacing on RaspberryPi.
Added simple online interactive calculator to convert noise density figure to specific frequency band AC RMS noise voltage.
Keithley SW-468 switch for Model 2000 repair project received.
Added feedback comment system to articles for user input and comments. Now you can follow us on Disqus
Server migrate to much bigger storage and faster system during this week. Sorry for possible downtime, we will be back online soon. Maintenance finish estimate at 25 May.
Published article about repairing Keithley 2001 7.5 digit multimeter
Added firmware binaries for Keithley Model 2001 (Ver.B06) and Model 2400. Thanks for contributors.
xDevs.com looking for Django + Python developer to work on website development. Those who interested, please contact skype:tin_topmods
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