Author Topic: question from Rigol DM3068 owners and purchase advice  (Read 457 times)

0 Members and 1 Guest are viewing this topic.

Offline analogRF

  • Regular Contributor
  • *
  • Posts: 139
  • Country: ca
question from Rigol DM3068 owners and purchase advice
« on: September 07, 2018, 04:19:57 am »
In my long search for a bench multimeter to replace my (sold) 34401A after grudgingly holding back from DMM6500 and 34465A (only because of the price that I cannot afford)  |O I am stuck between Rigol DM3068 and a used Fluke 8846A which I can get for about $675+shipping and tax.

Aside from higher reliability of the Fluke, Rigol has all the features that I want except perhaps one thing that I was hoping someone could give me a definitive answer: in dual display mode, can it measure voltage and current together at the same time? I know it is not good for the relay and should not be used for long periods of time but it's really handy in many occasions.

The Fluke can do it and most other meters including Rigol's own DM3058 are capable of doing this measurement but so far nobody has given me a definitive answer as to whether DM3068 is able to do this or not. It's funny that even the Rigol tech support guy was not quite sure...

If you Rigol owners can comment on the display size and readability and also the responsiveness of the instrument it's much appreciated...or any other pros and cons....
 

Offline TurboTom

  • Frequent Contributor
  • **
  • Posts: 382
  • Country: de
Re: question from Rigol DM3068 owners and purchase advice
« Reply #1 on: September 07, 2018, 04:40:56 am »
No the DM3068 won't read current and voltage as first/second function simultaneously. Unfortunately!
 

Offline analogRF

  • Regular Contributor
  • *
  • Posts: 139
  • Country: ca
Re: question from Rigol DM3068 owners and purchase advice
« Reply #2 on: September 07, 2018, 05:01:18 am »
No the DM3068 won't read current and voltage as first/second function simultaneously. Unfortunately!

Thanks! finally someone could clear that up. That's why eevblog rocks
but it's now more dilemma for me  :-\

any other comments about the Rigol? That used 8846A is also tempting but i don't know the history of it except that the VFD display seems ok
 

Offline Wolfgang

  • Frequent Contributor
  • **
  • Posts: 459
  • Country: de
  • Its great if it finally works !
    • Electronic Projects for Fun
Re: question from Rigol DM3068 owners and purchase advice
« Reply #3 on: September 07, 2018, 05:05:02 am »
I had one for test and I found out that it had SCPI connectivity problems, breaking a connection without any obvious reason.
The RIGOL is very old, and will probably be replaced soon.

I can only recommend the 34465A. I have never tested the cheaper new Keysight models, but maybe they do what you want and fit into your price range ?
 

Offline TheSteve

  • Supporter
  • ****
  • Posts: 2502
  • Country: ca
  • GHz or bust
Re: question from Rigol DM3068 owners and purchase advice
« Reply #4 on: September 07, 2018, 05:12:50 am »
Why even give the Rigol a second thought if you can get a 8846A for the same money.
VE7FM
 

Offline Wolfgang

  • Frequent Contributor
  • **
  • Posts: 459
  • Country: de
  • Its great if it finally works !
    • Electronic Projects for Fun
Re: question from Rigol DM3068 owners and purchase advice
« Reply #5 on: September 07, 2018, 05:20:07 am »
I agree. The Fluke wins hands down.
 

Offline analogRF

  • Regular Contributor
  • *
  • Posts: 139
  • Country: ca
Re: question from Rigol DM3068 owners and purchase advice
« Reply #6 on: September 07, 2018, 05:25:54 am »
Why even give the Rigol a second thought if you can get a 8846A for the same money.

there are several factors: first is the VFD display which I am not a fan of and although in pictures it looks bright I don't know when I receive it, it will actually be evenly bright or worn out. The rigol has some features like the probe hold (auto hold) which I am very used to and the Fluke doesn't have it. Besides I wouldn't know if the Fluke is still in calibration or needs immediate calibration which would cost me a bunch more.

Still there are smaller things like the responsiveness (such as auto-ranging speed) which Rigol seems to be much faster although I have only watched some videos and I cannot definitely say it's true. But the Fluke can measure voltage while measuring current simultaneously (only DC though)
 

Offline Dwaine

  • Regular Contributor
  • *
  • Posts: 235
  • Country: ca
Re: question from Rigol DM3068 owners and purchase advice
« Reply #7 on: September 07, 2018, 09:07:47 am »
I've had my Rigol DM3068 for about 2 years now.   I really like the meter.  The display is very bright and easy to see.  I have also used the meter with the LAN connection with python plotting scripts.  No problem with connectivity for measurements of weeks.  The histogram display is not at the same league as other meters.  But it is functional.   I really also like the stats displays.

Whatever you do, don't get the 3058 unit.

I know the Rigol 3058 does not get any love on here.  But its my main go to meter when I working on a project.   
 

Offline analogRF

  • Regular Contributor
  • *
  • Posts: 139
  • Country: ca
Re: question from Rigol DM3068 owners and purchase advice
« Reply #8 on: September 07, 2018, 12:44:53 pm »
No the DM3068 won't read current and voltage as first/second function simultaneously. Unfortunately!

Can it at least measure AC component riding on DC when you measure DCV/DCI and vice versa, showing DC value of an AC signal?
That's the most basic job of second display
 

Offline 2N3055

  • Super Contributor
  • ***
  • Posts: 1150
  • Country: hr
Re: question from Rigol DM3068 owners and purchase advice
« Reply #9 on: September 07, 2018, 04:26:50 pm »
FLuke is used from unknown source. Benchtop meters are not as robust as good handheld.. They are easy to damage so they are 4.5 digits not 6.5 digits anymore..
If that is price for used Fluke with calibration yes...

Rigol will works as specified. Fluke might be better or broken...

 

Offline TurboTom

  • Frequent Contributor
  • **
  • Posts: 382
  • Country: de
Re: question from Rigol DM3068 owners and purchase advice
« Reply #10 on: September 07, 2018, 06:57:02 pm »

Can it at least measure AC component riding on DC when you measure DCV/DCI and vice versa, showing DC value of an AC signal?
That's the most basic job of second display

Unfortunately not. I just checked it. You've got to switch between DCV and ACV and do two consecutive measurements (but it's really only a press of a button, once the probes are connected to the DUT). ACV appears to be really "hardware" AC coupled internally since a superimposed DC offset doesn't affect the measurement at all, even at high DC levels/low level AC (typical ripple measurement on a DC rail). Vice versa, DCV is insensitive to AC components as long as the integration time is configured to be multiples of (or long compared to) the period of the AC component.

A few goodies are the freely configurable sensor interface and the DC high-impedance mode (>10GOhm) that can be selected up to 20V.

When I got mine, there weren't many options in its price range and I wanted to buy a new instrument (for warranty and tax reasons), and for me it does the job well. If I would buy it again with the availability of today's choices is another question though...
« Last Edit: September 07, 2018, 09:40:20 pm by TurboTom »
 

Offline nctnico

  • Super Contributor
  • ***
  • Posts: 14779
  • Country: nl
    • NCT Developments
Re: question from Rigol DM3068 owners and purchase advice
« Reply #11 on: September 07, 2018, 07:44:36 pm »
Why not buy the Keysight 34461A if the 34465A is out of budget?
There are small lies, big lies and then there is what is on the screen of your oscilloscope.
 

Offline analogRF

  • Regular Contributor
  • *
  • Posts: 139
  • Country: ca
Re: question from Rigol DM3068 owners and purchase advice
« Reply #12 on: September 16, 2018, 05:01:49 am »
Why not buy the Keysight 34461A if the 34465A is out of budget?

mainly because of (1) more accurate low resistance measurement available on 8846A (both Keysight instruments only start at 100 ohm range)
(2) 10V diode test voltage and current settable to 100uA  (keysight is not flexible and only to 2V or maybe 5V ) (3) large electrolytic capacitance measurement where my LCR meter fails to measure (keysight goes up to 100uF only)
 


Share me

Digg  Facebook  SlashDot  Delicious  Technorati  Twitter  Google  Yahoo
Smf