Fluke 7526A Precision Process Calibrator Teardown

[Echo88]

I had the opportunity to open up a Fluke 7526A Precision Process Calibrator, basically the bigger and more recent brother of the Fluke 525B.
The older 525B was designed by Martell Electronics (named M2001) and rebadged by Fluke, i assume they did the same with the 7526A (named M3001, although the 7526A-pcb only states "Fluke 2017").
I found xDevs has already done a 525B-teardown and after comparing the mainboard-pictures with the 7526A its evidently very similar with a few more precision resistors, better voltage reference (LM399H compared to VRE302) and added frontpanel-pcb.

Boggles the mind to see that they redesigned the pcb, but are still incapable of installing the correct RS232-connector, still using three wires and a ziptie...thats what you get for about 10k$ new.
Oh and the Voltage Output is not capable of producing a bipolar voltage with the 7526A "[1]All outputs are positive only, unless otherwise noted." 

So here follows a short teardown with pictures and a list of the used ICs/components.

Used parts:

1x National Instruments TNT4882 GPIB-Communication
1x LT1281 RS232 Communication
1x ATMega128 Controller
1x BPSX 2-08-00 BIAS 2 Watt Power Supply 

1x LM399H (with a LM317 next to it)

4x LTC1151CSW Zero Drift OP
1x AD8629 Dual Zero Drift RRIO OP
2x LTC2051HV Dual Zero Drift OP
2x MAX333ACWP Quad SPDT Analog Switch
1x DG408DY 8-Channel Analog Switch
1x LT1595A 16Bit Serial Multiplying DAC
1x LT1595B 16Bit Serial Multiplying DAC
1x CS5534-BSZ 24Bit-ADC with PGA
1x PS-2801-4 Quad Photocoupler
3x 74HC595 Shift Register
4x H11L1 Schmitt Trigger Optocoupler

Precision Resistors, each:
15k
18.2k
25k
10k
2.5k
25k
2.5k
each marked: AE YF

1x 10R Z201T

Resistor Networks blue, marked AE:
4Pins each
002B9K000
002B75k00
002B120K0

Transformer Secondary:
7.3V
18.2V
17.3V
96.6V

Relays: ea2-5tnu

Small Front PCB:

1x LT1373 DCDC-Switcher
1x LTC2410 24Bit ADC
1x LTC2051HV
1x Caddock Network
3x Precision Resistors
1x ADR421 Voltage Reference
3x Relay ea2-5tnu
3x H11L1 Schmitt Trigger Optocoupler

https://xdevs.com/fix/f525a/
https://eu.flukecal.com/products/obsolete-products/525b-temperature-pressure-calibrator?quicktabs_product_details=2
http://www.calibratordepot.com/browseproducts/Martel-M2001-Benchtop-Multifunction-Calibrator.html

https://eu.flukecal.com/products/electrical-calibration/electrical-calibrators/7526a-precision-process-calibrator
https://www.instrumentation2000.com/martel-3001.html

[Echo88]

More pictures due to post size restrictions.

[Echo88]

Done.