Keysight 34465A DMM Unboxing & My dummy loads verification

[thin bLue]

100% I paid this for myself.

POMONA Yeeees!

Ah... Really? At this price point?

Of course, I peeled off the thing. And now, I can precisely control the inside temperature of steaks. Steaks are umder control, stronger than ever.

Anyway Pomona is good.




One member claimed my loads are wrong before.

At that time I answered like this.

But to make sure, I will add some.



The loads I failed with heat at first place.

Those were heats up considerably fast. when I touch them, I could immediately feel the heating. So relatively easy to find cause of nonlinearity.



And Current updated loads

16 Ohms, Rated as 1kW each.
You can imagine the size and weight.
Finally got coooool and peace in many ways.


So is the new load NP?
I think, YES.

Under
Temp. 28.9 C ( +-1 C) = 84.02 F
Humidity 44 % (+- 5 %)

┌ 34465A ┐
+ - L o a d s - -
└ 0 0 4 0 ┘

*0040 filter was attached with unconnected XLR cable.

Ch1

Ch 2

For 2 Ohms I made them parallel. So you can imagine It's sure for 2 Ohms.
Now, I can provide exact temperature change of load surface. But I'll not. Because, nobody provides benefits to me for adding such a cumbersome, bothering and frustrating process.

Just those who trust in me trust, and those who do not do not.
How to use the data is fully depends on you.


Dummy Load provided by Marchaudio

Under
Temp. 29.0 C ( +-1 C) = 84.20 F
Humidity 44 % (+- 5 %)

┌ 34465A ┐
+ - L o a d - -

*Load was attached with unconnected XLR cable.

In fact I have more loads to test.

(Support from 높이날아라 @ DC inside Speaker gallery)


And I'm working hard on an reasonably-priced AMPs measurement review. Especially about AIYMA A07.

I also have some news about new fried device.

For, RX-A8A please wait. 3rd sample from Yamaha Korea is listed for measurement. (I haven't got paid any at this moment. So I'm still remaining as a 3rd party reviewer)

 

[amirm]

Congratulations on the new meter. On 2 ohm load, your wiring can cause it to change by 5 to 10%. And at any rate, I am not sure it matters if it is 1.9 or 2.1 ohm. No one knows their speaker impedance anyway.

 

[thin bLue]

Congratulations on the new meter. On 2 ohm load, your wiring can cause it to change by 5 to 10%. And at any rate, I am not sure it matters if it is 1.9 or 2.1 ohm. No one knows their speaker impedance anyway.

Thank you for your warm-hearted comments!

Anyway, thanks to advices form you and our members, I'm now getting much better results than before!

I'll post new measurements ASAP!

 

[flyhigh]

I hope that the ceramic resistors in the last picture also work well.

 

[thin bLue]

I hope that the ceramic resistors in the last picture also work well.

It is an honor to receive such great support! I will post a follow-up article as soon as it is ready.

 

[Sokel]

@restorer-john today told me about a similar DMM.
WANT!

Congratulations!

 

[thin bLue]

@restorer-john today told me about a similar DMM.
WANT!

Congratulations!

Oh really? What a coincidence!

Thank you!

 

[egellings]

Congratulations on the new meter. On 2 ohm load, your wiring can cause it to change by 5 to 10%. And at any rate, I am not sure it matters if it is 1.9 or 2.1 ohm. No one knows their speaker impedance anyway.

Kelvin (4-wire) connection should be used when measuring such low resistances. 34465A can do that.

 

[thin bLue]

Kelvin (4-wire) connection should be used when measuring such low resistances. 34465A can do that.

Waiting for wires now. ETA 9 weeks to get pomona's

 

[Doodski]

Veryyyy nice bench meter. My heart sang when I saw the image of it for the first time. OK onto the loads and the instrumentation wiring. The loads need to be very well connected or the connections will heat up and melt the wire insulation and then all sorts of really bad stuff can happen like electrocute you, cause a fire and cause the amp to be shorted and fried etc etc. So pleaseee use proper terminations and if possible solder direct connections on your final test configuration..

 

[thin bLue]

Veryyyy nice bench meter. My heart sang when I saw the image of it for the first time. OK onto the loads and the instrumentation wiring. The loads need to be very well connected or the connections will heat up and melt the wire insulation and then all sorts of really bad stuff can happen like electrocute you, cause a fire and cause the amp to be shorted and fried etc etc. So pleaseee use proper terminations and if possible solder direct connections on your final test configuration..

Thanks a lot! Yeeeees! I don't wanna fry any more xD.