Author Topic: Keysight U5855A TrueIR thermal imager (Read 96994 times)

Fraser · « **Reply #350 on:** July 06, 2017, 01:16:25 pm »

Marshallh,

Many thanks for the excellent pictures. I have just returned from holiday and will be delving inside my faulty U5855A soon

Fraser

Fraser · « **Reply #351 on:** July 06, 2017, 01:22:41 pm »

Regarding the design of this camera.
The pictures from Marshallh show a well designed camera but also quite a low level of integration. This is the sort of thermal camera that I am used to seeing on my lab bench. They are far easier to work in than the latest platforms that are highly integrated and often harder to repair.

I believe the U5855A may be a product of the NEC AVIO G30 and that may explain the relatively 'old school' design. Nothing wrong with that though.

Fraser

eeviking · « **Reply #352 on:** July 14, 2017, 12:57:20 pm »

Quote from: eeviking on May 19, 2017, 01:22:50 pm

If it haven't been mentioned yet then Keysight is giving a free U1231A multimeter to each customer buying used equipment from the ebay store in may.

http://stores.ebay.com/keysight/Terms-and-Conditions.html

The U5855A listing should be eligible for this.

Unfortunately I ordered mine in April, so I just had to order one more

Did anyone receive the free U1231A ?
I have not heard anything from Keysight about it.

eeviking · « **Reply #353 on:** July 14, 2017, 01:41:27 pm »

Ok got a reply from Keysight that they will be shipping the U1231A soon...

adranp · « **Reply #354 on:** July 14, 2017, 04:01:28 pm »

:eeviking - When did you buy the U5855A? Is the promotion still active?

Thanks..

TheSteve · « **Reply #355 on:** July 14, 2017, 05:19:17 pm »

The Keysight promo was a free u1231a with any purchase from the eBay store during the month of May. I also missed out!

HighVoltage · « **Reply #356 on:** July 14, 2017, 06:36:25 pm »

Quote from: eeviking on July 14, 2017, 12:57:20 pm

Did anyone receive the free U1231A ?
I have not heard anything from Keysight about it.

I am suppose to get one as well, since I bought something in May from the Keysight store.
So far I have not heard anything but it was stated at the beginning that it would ship by the end of July

JanHenrik · « **Reply #357 on:** July 15, 2017, 07:38:16 pm »

Hi,

I got my U5855A a few days ago. I paid ~520€ for it with additional 100€ shipping and import fee, thats a great price I guess. Included was the camera and a new battery.
I am realy impressed by it, but I have a question. The Camera doesnt show the "Fine-Resolution" mode in the menue, but it is always on. How can that be?

Also, here are a few pictures, the last one is upscaled with waifu2x.

jpb · « **Reply #358 on:** July 15, 2017, 09:22:09 pm »

I guess that the fine resolution mode is intrinsic to the camera - it is essentially combining multiple images in each (slow) 9 fps image and I can't see any advantage to an option to turn it off. If the camera was tripod mounted then the multiple images wouldn't change so the effective resolution would be less (ironically).
It does allow you to select between 3MP and 1.3MP visible cameras.

Is there a reason that you'd like to turn off the fine resolution?

Fraser · « **Reply #359 on:** July 15, 2017, 09:39:57 pm »

Please read the user manual.

The fine resolution mode is default "on" but the user manual tells you how to switch it "off". I cannot remember the procedure at the moment. When it is "on" you see the orange icon at the top of the display.

Fraser

JanHenrik · « **Reply #360 on:** July 15, 2017, 10:09:00 pm »

Hi Fraser,

thats the problem, it doesnt tell how to turn it off or on. I would like to see how it looks with it turned off.

Fraser · « **Reply #361 on:** July 15, 2017, 10:10:53 pm »

OK, I will find it for you

Fraser

Fraser · « **Reply #362 on:** July 15, 2017, 10:17:32 pm »

Page 21 of the user manual

Relevant info attached

Are you saying this menu option is not present on your camera ?

Also note that the camera has a 320 x 240 pixel display so even with Fine Resolution switched off, interpolation will be used to upscale the image from 160 x 120 to 320 x 240 pixels. This is stated in the manual.

Fraser

JanHenrik · « **Reply #363 on:** July 15, 2017, 10:29:10 pm »

Thank you very much. On the new user manual, it is not described anymore (if you download it from keysight).

Also here is the place where it should be

Fraser · « **Reply #364 on:** July 15, 2017, 10:50:22 pm »

I see your problem !

I am still using the camera 'as supplied' and the firmware has not been upgraded. I saw no reason to do so at the moment.

I have been using issue 2 of the manual from here:

http://literature.cdn.keysight.com/litweb/pdf/U5855-90000.pdf

Annoying if they have now prevented disablement of the Fine Resolution mode. I do not like loss of control over when it is applied.

I shall fire up my cameras tomorrow and have a play with them. I have a partially faulty camera that is running the latest firmware so I can compare.

Fraser

TheSteve · « **Reply #365 on:** July 15, 2017, 10:53:09 pm »

I've never found a way to disable fine resolution mode with the newest firmware. I assume having it on is preferred but it still would be nice to compare with and without.

JanHenrik · « **Reply #366 on:** July 16, 2017, 12:48:38 am »

Ah, thanks then Fraser and TheSteve

JanHenrik · « **Reply #367 on:** July 16, 2017, 03:29:13 pm »

I realy start to like the camera

Fraser · « **Reply #368 on:** July 16, 2017, 05:25:56 pm »

Getting the focus right can be the challenge sometimes.

For really close-up work you can place a cheap ZnSe lens in front of the objective. Choose from 50, 64 or 100mm FL for around £10 delivered

The FLIR E4 related threads have more information about such Close-up lenses. They are cheap from China as they are used in CO2 laser applications.

Fraser

ixfd64 · « **Reply #369 on:** July 16, 2017, 06:39:27 pm »

Quote from: TheSteve on July 15, 2017, 10:53:09 pm

I've never found a way to disable fine resolution mode with the newest firmware. I assume having it on is preferred but it still would be nice to compare with and without.

Someone should contact Keysight and tell them to update the manual.

marshallh · « **Reply #370 on:** July 17, 2017, 02:41:54 am »

Fine Resolution only takes effect when you take a shot. This is why there is a small delay when pressing the trigger. On earlier NEC Avio platforms there is no such delay.

So the live preview will not have fine resolution, but when you take a snapshot it creates a fine resolution image snapshot.

Bruno28 · « **Reply #371 on:** July 17, 2017, 06:33:22 am »

So is this U5855A on one of the best low cost thermal cameras available? Best 'price for resolution' Thermal camera?

Im looking to get another one but didn't want to spend over $800 usd. Fraser, did you get yours for $450 usd or pounds?

simingx · « **Reply #372 on:** July 17, 2017, 07:59:52 am »

Just picked one up, after which they promptly listed another one with a broken strap holder for US$60 less...

Are the lenses on these things sensitive to moisture; i.e. should I keep it in the dry box when not in use?

Bruno28 · « **Reply #373 on:** July 17, 2017, 11:59:06 am »

What is the charger needed for these cameras? Can it be charged inside the device?
Voltage, current and socket size?

Answered from looking at other posts.
"12V 3A with a standard 2.1mm connector and positive in the center."
Ive got like 100 units of 12v 2Amps but not sure if the centre is 2.1mm I'll have to check. Using a 2amps should work, just will take longer to charge, correct?

Fraser · « **Reply #374 on:** July 17, 2017, 01:05:03 pm »

The charger uses a 2.5mm centre. The 2.1mm centre spec was in error.
A 2A rated power supply should work fine as the provided 3A unit is almost 100% overrated for the task. It is just a standard DVE unit Agilent decided to use.

Fraser


EEVblog Main Site	EEVblog on Youtube	EEVblog on Twitter	EEVblog on Facebook	EEVblog on Odysee

Author Topic: Keysight U5855A TrueIR thermal imager (Read 96994 times)

Share me