Author Topic: Fluke 91 Series II?  (Read 178 times)

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Offline wd5jfr

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Fluke 91 Series II?
« on: January 18, 2023, 02:51:10 am »
Bought one at a hamfest and it should be useful.  Works well on all the functions I've been able to test (confirmed with my Fluke 189II)  but I'm curios why I  have to use a scope probe to measure voltages over 3 volts rather than the regular test leads or am I using it incorrectly?  It didn't have a probe so I'm using a Tektronix P6100 and it appears to be making  connection with the red non-metallic BNC input.  If using the recommended PM8918 probe is better I wonder if anyone has a surplus one for sale and also interested in a DEMO BOARD and protective  surround case.
Thanks
Hank
 

Offline bdunham7

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Re: Fluke 91 Series II?
« Reply #1 on: January 18, 2023, 03:28:46 am »
but I'm curios why I  have to use a scope probe to measure voltages over 3 volts rather than the regular test leads or am I using it incorrectly? 

The banana jacks are intended for ohms, diode, continuity, temp and external shunt functions.  All normal voltage functions are through the BNC connector with a suitable probe.

https://assets.fluke.com/manuals/scopemt2umeng0000.pdf
A 3.5 digit 4.5 digit 5 digit 5.5 digit 6.5 digit 7.5 digit DMM is good enough for most people.
 


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