Fluke 8505A doing ohms

[m k]

It's a bit off.
(13R6)
Voltage change is not noise.

Reboot
(120K)
Both machines have isolators but only older version is showing it.

Pressing Filter.
(Filter)
Both have mode F.
Only current mode F is ticking differently.

Bypass mode.
(Store 1 Filter)
Steady lower current.

Very slow combined mode F2.
(Store 2 Filter)
Only current mode F2 is again ticking differently.

Mode F3.
(Store 3 Filter)

Back to mode F.
(Store Filter)
Current filter led fails.
Combined mode F but no led.
If current is not mode F its value is ticking differently.

Upper machine has Active Filter changed.
Some combinations may have had differences but generally there are no effect.

E,
didn't understand the ending.

E2,
Dang, can't stand that ütub, it shrinked them files even more, so they continue here then.

[m k]

So how was it exactly.
Can't say how it is with currents but voltages were filter steady.
Earlier differences when upper and lower machine had different filters are verified, current reading is ticking differently but reason is not known yet.
Ohms then are clearly switching between filter and bypass.

v502 ohms filters ticking
F = 2x(filtered, bypass) then 2x(+V filtered, bypass) and repeat.
F0 = 7x(filtered, bypass) then 7x(+V filtered, bypass) and repeat.
F1 = 3x(2x(+V bypass, bypass), 4xbypass) then 3x(3x(+V bypass, bypass), 6xbypass) and repeat.
F2 = F
F3 = F0

4x and 6x can be more or less.
7x +V can be repeated less than 10 times and then maybe one or two 6x.

[m k]

All variations are not checked but all software versions(2,3,4,6) seems to be the same.
Currents are also filter steady.

Current changes when measuring other machine Ohms
v504 filter
F = F0
F0 blink fast if Ohms F
F0 blink slow if Ohms F0
F1 steady
F2 slow tick, fast change if Ohms F
F2 slow tick, slow change if Ohms F0
F3 semi tick, fast change if Ohms F
F3 F & F0 blink fast if Ohms F0

When measuring HP ohms there are no current changes.

This is also the only Ohms Controller available, same with Current Shunts, so no idea what happens when it is repaired.
And matching sample led and those current and voltage readings is a bit difficult but link there obviously is.

To see those Active filter selections I did a sniffer, small clips, LEDs and LS244.
TTL floating as high will ease testing it, just connect power and all LEDs should lit.