Hi,
I have here a HP 8341A signal generator which has a bad YTO. A55, the YO Driver, is also faulty, but I have found a spare part and ordered it. The YTO in question is a 5086-7323, which works from 2.3 to 7 GHz. I wonder whether it is possible
a) to repair this YIG,
b) or to test it somehow outside the instrument,
c) or if there is any spare part or a similar replacement?
It would be great if I could, somehow, bring the signal generator back to life.
Many thanks for any hints,
best
Tobias
Hello Tobias,
Even though the HP 8341A is an obsolete instrument Keysight still provides some level of support through Extended Service.
If you go to Keysight and search for 8341A you can click on the View Service Options link and you will be take to a page providing what extended service options are available for your product and for your local region.
You can also use the "Contact an Expert" link to get a direct phone number to contact Keysight to ask specific questions regarding extended support available for your HP 8341A.
Thanks,
Lukas
Some US companies repair yigs but the cost is prohibitive. Test of the yig alone is very easy as the pinout of the yig card is decribed in the Service manual : you need a positive and a negative supply (must be on at the same time, the negative supply is for the FET) and a current source (rule of thumb for many yigs, 100mA/Ghz) and, of course, a SA.
Hello Tobias,
Even though the HP 8341A is an obsolete instrument Keysight still provides some level of support through Extended Service.
If you go to Keysight and search for 8341A you can click on the View Service Options link and you will be take to a page providing what extended service options are available for your product and for your local region.
You can also use the "Contact an Expert" link to get a direct phone number to contact Keysight to ask specific questions regarding extended support available for your HP 8341A.
Thanks,
Lukas