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Agilent L4411A Multimeter teardown

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coromonadalix:
here's some  high res

you do see a familiar number there 

coromonadalix:
here's some  high res

coromonadalix:
here's some  high res

the fan is well hidden  ...  have cleaned it up,  but  it's kinda noisy to hear it   case opened

coromonadalix:
here's some  high res


Yo do see some holes on the sub front panel frame   

The rears plugs and fuse socket could be moved to the front ??  maybe  design a new overlay for this ??


strange the photo show rotated ???

Some ghost photo  loll   
There are 3 layers of stuff,  the overlay,  you have the front panel plate, and the frame chassis,   for the down right hole, only the frame chassis hole is punched ??

coromonadalix:
Shield plate removed

U302  Agilent  !ng4-0001   ASIC ?

A very high placed  crystal,  you sdont see it well  but it's lifted  5 mm  over the pcb  surface,  strain relief ??

A beautiful  LM399  reference

Some smt resistors, precision ??  R300 and R500

U700  an Xilinx Spartan  XC3S200

U505  AD9200A   10 bit 20mps AD converter 
https://www.analog.com/media/en/technical-documentation/data-sheets/AD9200.pdf

U506  AD9283   8-Bit, 50 MSPS/80 MSPS/100 MSPS
https://www.analog.com/media/en/technical-documentation/data-sheets/ad9283.pdf

U503  AD829   
https://www.analog.com/media/en/technical-documentation/data-sheets/ad829.pdf

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