Hi,
I own an old Hp 4145a semiconductor analyzer. The display unit has x-y-z analog outputs (1V p-p) that can be used to connect x-y displays like an oscilloscope. Is there any way (at reasonable cost & effort) to convert these signals so I can connect an old video monitor, either b/w video signal or a cheap old color monitor ?
Is anyone out there doing this ?
Thanks
Jk

On 09/29/2018 04:43 PM, kleinwaechterj via Groups.Io wrote:

I own an old Hp 4145a semiconductor analyzer. The display unit has x-y-z
analog outputs (1V p-p) that can be used to connect x-y displays like an
oscilloscope. Is there any way (at reasonable cost & effort) to convert
these signals so I can connect an old video monitor, either b/w video
signal or a cheap old color monitor ?
Is anyone out there doing this ?

None that I've heard of. You'd basically need a vector-to-raster
converter, which would digitize and draw the vectors into a framebuffer
which is simultaneously read out to a raster display, cheap or
otherwise. This is not a trivial conversion.

The 4145 is a highly capable and versatile instrument; the display it
uses is also used in many other instruments, and is well-documented.
You might be able to repair the display or find a donor instrument to
take a display from, assuming you're looking to do this due to a display
failure.

-Dave

--
Dave McGuire, AK4HZ
New Kensington, PA

开云体育

The easyist way to do this is to use a PC based 'scope. Most will run X-Y mode. A cheap USB one from ebay or even just a soundcard input and software

A Raspberry Pi will do it too


More informtion than you will ever need


Robert G8RPI.

Thanks for the input, l think this helped me to get on the right track. looks like the cheapest way might be to get an old vector scope off eBay and operate it in x-y mode. Small display though. Are there any old ones that have a larger display than 5"? Thanks, Robert, for those references. Love the LCD version but given I got the 4541a for $150 it blows the budget. Or i get a parts unit with working display but so far no luck for reasonable price.

Thanks?

If you have a bad display on the 4145A, you have a few options. There are Tektronik xyz displays available that have scalable inputs, they are available in BW and color.? I have one here that I am selling for a friend.? I don't recall if the 4145A has xyz crt display or the dot raster, without doing a little research.? Probably the B or C version has the dot raster, the C version may also be color.