This from Duncan Intellegence:
ARINCDirect
4-letter test station IDs: ARDC and ARDD
Tech support: ADFANS@arinc.com
Phone: 410 266-2990
Satcom Direct
4-letter test station ID: WIFS. (Use WIFS1 as the flight ID or call sign)
Tech support: support@satcomdirect.com
Phone: 321 777-3236
Link to complete article by Mike Meyer. Hi Mike!
Here is a fluke meter + voltage source to test Gigohms with simple math
GAN diode LED p/n C503B-GAS-CB0F0791, Datasheet
Resistance
high value test resistor,
1 gig resistor pn SM104FE-1000M-ND
10 gig
Capacitor
capacitance
Microcurrent

wire esw 1202-022-006. NEXANS company.
Red and white fire zone


https://surfaceliner.com/
#1 position ONLY, with new HG2001GD40 gives a fault AFTER ” ON BATT”.
OLD HG2001GC02 will run fine.
IMT on the GD40 IN #1position is “DATA INVALID”.

Other 2 units are disgustingly normal.
https://youtube.com/shorts/pxopz7Y77Fs?feature=share
#1 parity pin 4c set to ground. All good now
https://youtube.com/shorts/2Hezva5NJ3I?feature=share
Little difference between units.


Just a little vacuum to keep the mat smooth.
This is the pinout from the lower disconnect to the TRFSCU. REMEMBER There is a dissconnct 12 oclock high above the #2 enginge

Is missing the fresh water connection fitting.
Not in SIPC.



Blog to hold some troubleshooting information