Hi all,
?
I am ?fighting¡°
with a similar problem.
I already
did order from a Chinese supplier a spare YIG for 799$.
I got it
did mount it but it did not work inside my 8753B.
A test
directly at the output of the YIG did show no rf power at all.
In the
meantime I got a testcircuit f¨¹r such YIG¡¯s.
I should get the money back after return.
The YIG did show a seal from Agilent that it is OK. The date was not clear to see.
It seems to be something like 1995???
With these
instructions:
Connect +/-15V, +5V.
?
Connect power supply via 20-50 ohms resistor to the Coil.
No need to connect the FM coil.
?
Monitor the power supply current, and the YTO output on spectrum
analyzer.
?
?
Output power should be 10dbm min, +15dbm typ
I do not see a pin 9.
The trimpot may adjust the heating but I have no instruction about it.
Probably somebody has a schematic(s) of the different variations of the PCB of the YIG.
Many different part numbers should work:
5086-7718
5086-7934
5086-7906
5086-7473 Thats to official one for the 8753B
(inside my 8753B is mounted a 5086-7718! wihich has power drop problem at lower frequencies)
I hope these informations help you.
Best Regards
Armin
HB9MFL
Armin Roesch