Not sure what leaked cleaning solutions are being inhaled
but the AC bandwidth specs in the Fluke user and calibration manuals for 87-1, 87V and 28-11 -specifically- state
20khz max,
depending on the range/s.
If it's typo error and should be
200khz, then we all have dud meters randomly performing from 14 to 101 khz
and better jump on that Fluke Warranty asap before they get pushed out of business
by Brymen and Uni-T or flog the used ones back to the unwary pawn dealers and Negative Feedback fearing Ebay sellers.
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My verifications were simple as simple can be:
A linear/straight line performance (or whatever correct term floats boats) audio signal generator 10hz to 30khz hooked up directly to the 87 meter,
with similar results using either general purpose hook up leads/spaghetti or shielded audio cable.
Then the sig gen hooked up to to a brand new out of the box customers power amp (Crown 2400? heavy mofo) and amp outputs to 87 meter
And yes an oscilloscope was in on the action too to ensure the sig gen and amp were doing their thing
and a Tabor 8020 function generator with sine and all the other wave/pulse goodies, HP distortion meter,
as well as variable 0 to 32 ohm dummy load and halogen lamps for thrashing real audio gear to their limits
Come on gents, these are kiddie tests, the Fluke 87X will perform as specified by Fluke from 0 to 40 volts AC +-2.0%
with high frequency response rolling off a lot sooner once you hit on 400 to 1000 volts AC
For the fastidious: All contact points cleaned beforehand with isopropyl alcohol,
then after the tests lubed with WD40
(as recommended by Fluke) and some mule spit
to protect from tarnishing and crustiness during storage
i.e. I have a frozen pack of humble pie in the fridge, and state there is no way anyone will pull anything past 20khz on their stock 87x
at any level above 400mV AC, in actual real world average user conditions that Fluke caters for.
I rest my case Your Honor