Schaffner Interference Simulator: Posting Spikes on Mains

I got this Schaffner NSG 200E Interference Simulator mainframe with an NSG 223A module a while back to test a device featured in a previous video. That was quite a while ago, but I finally got around to taking a look at it.

Close-up pictures of the module and the logic board: https://s.co.tt/2025/05/24/schaffner-...

In this video we'll check out the device's internals and power it on for the first time in years. Then test some USB power supplies for interference (spike) pass-through.

The USB PSUs were the cheapest I could find for fast delivery from Amazon, at about 4 bucks each. I wanted them to be of questionable quality, but they seemed surprisingly well-made. Though I'm not an expert, I am a fan of ‪@DiodeGoneWild‬ and would love to send these over to him for a more thorough analysis if he'd be interested. (Pre-opened and pre-abused, of course.)

00:00:00 Intro
00:01:00 Uncrating
00:02:51 Front Panel
00:04:47 Rear Panel
00:06:26 Module Internals
00:16:15 Mainframe Internals
00:27:04 Included Cables
00:30:26 Initial Power-on Setup
00:32:20 Initial Power-on
00:41:30 Ground Leakage
00:44:58 USB PSU Intro
00:49:45 USB PSU Test Setup
00:52:50 USB PSU Testing
01:03:15 Revisiting the W-3900 Filter
01:06:48 USB PSU Investigation
01:12:06 Outro