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8753B Source module question

Question asked by 8510fan on Sep 21, 2011
Latest reply on Sep 23, 2011 by Dr_joel
I have a old 8753B as well as a C which both have a issue with the source module ( i bought the B as a parts mule for the C ) , as far as i can tell there is probably a issue with the output amplifier itself or the bias of this stage , unfortunatly there is no documentation on this !

Therefore my questions :

1.) What should be the typical gain for the output amp ? P1dB ?
2.) What are the bias levels i should be able to measure on the pins coming from the bias board ?
3.) what active parts were used in this amp ? are there any old design files/schematics/ADS layout files ?
4.) is there a schematic for the bias board anywhere ? i have the CLIPS for the A model but this part does not seem to be documented !

I have acess to bonding equipment so changing out the active devices if needed would not be a issue !  

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