Advice on Repair of Hatfield 2100 Attenuator - Page 2 - UK Vintage Radio Repair and Restoration Discussion Forum

Wendymott · 10th Feb 2017, 11:46 am

Please do NOT forget the series resistance of the meter leads......at low resistance this can be a quite large percentage... my leads measure 0.4 ohms....... I also have a LCR meter but that has 2X leads for each input..this provides the drive voltage on one pair and the reading on the other.... AND these leads are only 10CM. So if you are measuring high tol low value resistors subtract the lead resistance.

Anthony · 1st Mar 2017, 12:39 pm

Just to round up. Attenuator now fixed as above. The faulty 20 dB section is now fixed. Thank you to all who advised. Thread may be closed

10th Feb 2017, 11:46 am	#21
Wendymott Octode Join Date: Jun 2013 Location: Huddersfield, West Yorkshire, UK. Posts: 1,795	Re: Advice on Repair of Hatfield 2100 Attenuator Please do NOT forget the series resistance of the meter leads......at low resistance this can be a quite large percentage... my leads measure 0.4 ohms....... I also have a LCR meter but that has 2X leads for each input..this provides the drive voltage on one pair and the reading on the other.... AND these leads are only 10CM. So if you are measuring high tol low value resistors subtract the lead resistance. __________________ Should get out more. Regards Wendy G8BZY

1st Mar 2017, 12:39 pm	#22
Anthony Hexode Join Date: Sep 2006 Location: Hertford, Herts. UK. Posts: 338	Re: Advice on Repair of Hatfield 2100 Attenuator Just to round up. Attenuator now fixed as above. The faulty 20 dB section is now fixed. Thank you to all who advised. Thread may be closed