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Aeroflex IFR3413 IFR3414 IFR3416 Signal generator
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Mkpirulo:
Hi,

From my experience those guys seem to be ok with IFR 3410 series talk, these units are close enough should be no issue.

Do you have a source for the RF mmics?

Thanks,
Michael
G0HZU:

--- Quote from: Mkpirulo on July 18, 2024, 02:29:08 pm ---Hi,

Looks good. Could you provide us the LED PN that you used. Also include a link to the China units.

Thanks,
Michael

--- End quote ---
See below for an image of the display used in the IFR3414. This shows the part number on a sticker.

The last time I looked these were available from several sources but it looks like many are now sold as the sources have vanished. I posted this info on another forum a while back so maybe some service/repair people have bought them all.

For the backlight I just used two 3mm ultra bright white LEDs and used resistors to bias them at about 10mA from a 5V supply. It is just possible to cram these diodes in the space vacated by the failed CFL tube in the original display.

Note that the display is a touch screen display but the touch part of it is embedded in the front panel glass with its own touch screen interface. The actual LCD module is just a basic LCD that sits behind the 'touch' glass.


G0HZU:
The SHF-0189 MMICs are long obsolete but there are various vendors online. I suspect many of the parts available now will be clones made in China. I don't know how well they will function compared to the original.

I did a lot of design work with the SHF-0189 and the 289 and 589 many years ago so I have quite a few genuine parts kept safe here. I'm probably going to need all of them as the SHF-0189 is also used in some of my Agilent sig gens and four SHF-0189 MMICs have already failed over the years in these sig gens. I think I've got less than twenty genuine SHF-0189 parts left now.
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