Tag: keysight

Fake National Instruments GPIB-USB-HS converter (and NI not caring about it) (WHL #87)

Niche hardware again for today, a USB to GPIB/IEEE-488 converter from National Instruments. Or at least what the Chinese have deemed necessary for a functional copy…but first things first.

This adapter was bought at work for connecting an ancient beast of a scope (a LeCroy LC334 – 4 channel, 500MHz/2GSa/s, 400W, 20kg spread across 50 liters of chassis volume, 9″ 640×480 color CRT) to a modern computer. While that sounds crazy (well, it is), that old hulk was purchased with a current probe, which is actually very useful for a current (ha!) […]


Post #100 HP 6644A refurbishment (#P14)

Not that anybody cares, but this is actually post number 100 already. I prepared something else that failed (to be reported!), so this one has to do instead ;)

My “lab” power supply situation is ageing and often no longer up to the task, think of LEDs north of 35V or anything that takes more than one amp at voltages that cannot be provided with common computer supplies (3.3V, 5V, 12V, 19/20V) easily. So this is part one of the refresh.

I bought a HP 6644A power supply around six weeks ago off eBay, at 245€ including shipping and rack mounts via best offer. […]