Fluke model 840a/b or 841a/b galvanometer

[Tj138waterboy]

Does anyone have one of these units or schematics. Interested to know how it would compare to hp419/fluke845

[doktor pyta]

I'm not 100% sure but ranges suggest this could be Fluke 540B galvo section sold as a separate instrument.
If so, it has LOW input resistance (magnetic modulator) so completely opposite of hp419 and F845.

Update: '840A' sequence appears in the F540B manual in galvo related parts.

[Tj138waterboy]

I have found one picture in a sales manual that appears to have this unit sitting inside a bigger backpack unit. From what I can find while waiting for my unit to arrive with missing power cord is that in picrures it was a non grounded plug with a box to modify from 110v to 220v just a few inches after the wall plug. The old picture background is the backpack unit.