Hi Shahriar
I had an initial rummage through my dev parts box at work and couldn't find very many of these parts.
I did manage to find 1 new unused SHF0189(Z) with the H1Z marking (this is the lead free part) and I can remove a working one from an old dev board that is the SHF0189 with the H1 marking.
So I can send you two parts for the cost of postage if you still need them. I assume it will be cheapest if I send them in a slim jiffy bag by Royal Mail. This will probably be just a few dollars postage with about a 7 day delivery time. I'm not bothered if they get lost in the post so no need to pay for tracking unless you would prefer this? I'm guessing it will be about $12 with tracking for about a 7 day delivery.
Yes, I'm not sure the GALI 84 is the right device to use because it has about 25dB gain down at 250MHz.
Hi Shahriar,
Great video and very timely for me.
I just picked up a 4432B ESG-D with opts 100,1E5,H99,UND for $700AU
It has the same fault indicator. I'm just about to embark on a fault finding mission to see if its the same device that failed.
FYI you can buy SIRENZA new parts from UTsource here...
http://www.utsource.net/ic-datasheet/SHF-0189-1906844.html
regards
Tim
Also, was that an SMA interface used to connect to the probes fed by PCB soldered RG316?
I'd look in the block diagram where the burst modulation is coming from. A DMM with instant continuity is handy because you can swipe the probe along the pins quickly.
I got an E4422B unit with the UNLEVELED error and no output. I followed different repair tips from this and other threads. I tried the 20K resistor bypass fix and I got -30 dBm signal, but unit still showed the UNLEVELED error. I also tried reflowing the area near the BURST MOD at the same time. After I removed the 20K resistor, I got consistent -60 dBm signal with the UNLEVELED error still on the display, so the "no output" error was fixed, but signal did not go higher than -60 dBm... it goes down when I set levels lower than 0 dBm, but it does not go higher than -60 dBm even when I set any level higher than 0 dBm. The output amp is OK, if I remove it and bypass the input to the output, the output level drops by 30-40dBm. Then I tried to test the level before and after the BURST MOD section by soldering 2 pieces of jumper wires, one before the first diode, one after the last diode (this BURST MOD section is just before the output amplifier section). I set the output frequency to 50MHz, level to 0 dBm and connected the scope probe (10X)... magically the generator outputs the correct level... it even goes up to near 20 dBm and no more UNLEVELED error!!! After 2.5 GHz starts to give the UNLEVELED error again... Then I decided to remove the 2 wires, thinking the generator was almost fixed, but I get the same -60 dBm signal and UNLEVELED error... I solder the wires, no error... remove them, error... solder the wires, fixed...
It is the most bizarre "repair" I have experienced... The wires are not even connected, they are not twisted... they are just hanging in the air... Only 1 wire doesn't fix the problem, I need to have both wires soldered