Tektronix 011-0099-00 5W 50ohm Termination

[RaymondMack]

Does anyone have a datasheet or manual for the Tektronix 011-0099-00 5W 50ohm termination? I tried looking but couldn't find anything. I was curious about the bandwidth and pulse power capability.

Also, has anyone attempted to replace the BNC connectors? The female connector on one of my terminators looks like it should be replaced. The connector on the left has a pretty loose center contact when compared to the one on the right.



I assume, that to put this together, the termination resistor is soldered directly to the female connector with some sort of leaf spring assembly used to touch the inner shell, then the male pin is soldered onto the other end and it just free spins as the female end is threaded into the housing. I guess Tektronix could have used a coaxial resistor. Most just use SMD parts soldered between the center pin and a leaf spring touching the shell.

Any thoughts on this? Maybe the expanded female contacts aren't as big a deal as I'm making them out to be?

[jdragoset]

No solder, the assembly is entirely mechanical threaded connections.

[David Hess]

Those were actually made by someone else; Probe Master sold the same terminator.

The only data I have seen on them is in the Tektronix catalogs, 5 watts, SWR < 1.1 from DC to 100 MHz, but I see identical results compared to higher frequency attenuators up to at least 300 MHz.

[RaymondMack]

No solder, the assembly is entirely mechanical threaded connections.

Have you pulled one apart before? Would I be okay to unthread the female connector and not damage the load resistor?

[jdragoset]

When I got mine it was intermittent, both through the BNC connectors and 50 ohms to ground.
Figured what to loose and unscrewed the male BNC end (flat open end wrench).
The male pin comes out and is screwed onto a rod.
the resistor is a flat carbon disc with a center and outer metallized ring.
The outer ring is held with a threaded ring like the lens of a microscope.
The inner ring is held with threaded extensions from the BNC connectors pin and socket
I was able to tighten all the threads and get reliable continuity through as well as 50 ohms to ground.
Did look for a breakdown diagram online but did not find anything.