RadioBanter - View Single Post

January 9th 05, 10:32 PM

On 8 Jan 2005 12:37:22 -0800 (George)
wrote:

Just picked up ( actually it too heavy to just pick up)
one of these old boat anchors. The cost was less tnan
a large coffee so I guess the fellow Ham wanted to move
it out of his basement!!
It makes a nice squiggly line when plugged in but without
a manual, I may have to turn it into a back doorstep.

It's one of the very early 3 series Tek vertical amp plugins for the
560 series of scopes. You mentioned that your scope is a 568, but
which time base plugin does it have?

I like the 560 scopes, but the max bandwidth is only 10 MHz. For the
3A72, the bandwidth is only 650 kHz. The 3A1 and 3A6 will give you the
full 10 MHz bandwidth, and there are lots of specialty plugins which
are available out there for fairly cheap.

The 568 was made to work with a special digital unit which I believe
was supposed to readout times and voltages in digital form. I'm not
actually sure of what it was supposed to do, but it's mentioned in
Stan Griffith's Tek book. I've never worked with one.

Personally, I am most fond of the 564B, which is a later solid state
storage scope mainframe, but still limited to 10 MHz.

I'm always amazed at how often 10 MHz is plenty.

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Jim Adney
Madison, WI 53711 USA
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