Author Topic: Bench 6.5 digit - most bang for the buck?  (Read 20474 times)

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Offline alank2Topic starter

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Re: Bench 6.5 digit - most bang for the buck?
« Reply #50 on: December 03, 2015, 10:56:25 pm »
The second 8845A arrived today - curiously between the last one and this one, they changed the box!  The first one came in an odd contraption where the meter was pressed between two plastic sheets held in the center of the box.  The new one is a smaller box and uses a traditional type of foams on each end of the meter.  No plastic bag.

This one does seem to have a better display than the first one.  The test screen does not show burn in of any kind yet and it seems a little bit brighter even on low.

I've attached a spreadsheet that compares both of the calibration reports for anyone who wants to see the calibration info.

It does make the same 1 Hz ticking noise the first one did.  More experimenting shows that it happens in certain modes like the frequency/period/ACV modes.

BTW, one nice thing I noticed with both units is that they include the RS232 to USB cable - something Fluke says is $150.  Most of the Fluke documentation says this won't be included, but their website shows that it is included.
 

Online tautech

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Re: Bench 6.5 digit - most bang for the buck?
« Reply #51 on: December 03, 2015, 11:44:29 pm »
It does make the same 1 Hz ticking noise the first one did.  More experimenting shows that it happens in certain modes like the frequency/period/ACV modes.
Wouldn't that be a relay switching in dual measurement mode?
Surely you can turn that off and have it only in single measurement mode or can you?

I know with the SDM3055 Siglent dual measurements are not available for all measurement types and in single measure mode it only switches for range changes.
In dual it switches at ~1Hz.
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Offline eas

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Re: Bench 6.5 digit - most bang for the buck?
« Reply #52 on: December 04, 2015, 12:03:34 am »
The second 8845A arrived today - curiously between the last one and this one, they changed the box!  The first one came in an odd contraption where the meter was pressed between two plastic sheets held in the center of the box.

Sounds like they reused a box designed for equipment repair returns. Those things can be shipped flat to the customer, who then assembles them and returns them with the equipment to be serviced.
 

Offline alank2Topic starter

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Re: Bench 6.5 digit - most bang for the buck?
« Reply #53 on: December 04, 2015, 12:15:46 am »
Wouldn't that be a relay switching in dual measurement mode?
Surely you can turn that off and have it only in single measurement mode or can you?

It isn't a relay firing, more of a buzz buzz buzz.  Just in regular AC/frequency/period mode.  Perhaps someone else with an 8845 or 8845 can see if theirs does it.  Both of the ones I've seen do so I'm not going to worry about it.
 

Online georges80

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Re: Bench 6.5 digit - most bang for the buck?
« Reply #54 on: December 04, 2015, 02:05:40 am »
Yeah, on frequency I can here a quick buzz, buzz, buzz... if I tilt my head/ear to it from a few inches away and have to listen for it to even notice it in a quiet room - at least with my aging ears. If it had even a quiet fan you would never know.

cheers,
george.
 

Offline alank2Topic starter

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Re: Bench 6.5 digit - most bang for the buck?
« Reply #55 on: December 04, 2015, 02:47:01 am »
Yeah, on frequency I can here a quick buzz, buzz, buzz... if I tilt my head/ear to it from a few inches away and have to listen for it to even notice it in a quiet room - at least with my aging ears. If it had even a quiet fan you would never know.

Yep, that is it all right.
 
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Offline Deathwish

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Re: Bench 6.5 digit - most bang for the buck?
« Reply #56 on: December 04, 2015, 03:10:35 am »
Wouldn't that be a relay switching in dual measurement mode?
Surely you can turn that off and have it only in single measurement mode or can you?

It isn't a relay firing, more of a buzz buzz buzz.  Just in regular AC/frequency/period mode.  Perhaps someone else with an 8845 or 8845 can see if theirs does it.  Both of the ones I've seen do so I'm not going to worry about it.
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