Spectrum | Inspection Behind The Scenes


Hello, hello, community!

I’ve been tasked with writing a new topic regarding a behind-the-scenes look at the Spectrum Stand and Spectrum testing. We’ll take a closer look at Spectrum Stand sample analysis, as well as some of the testing conducted on the mass-produced monitors prior to shipping. So, kick back, relax, and stay a while, as we take a look at some inspection footage!

Spectrum Stand inspection

Thanks to footage from our community manager Grant, we can take a look at some of the quality assurance checks performed on the Spectrum Stand.

Inspection of a golden and edge pilot samples. The necks were secured to the bases to verify fit and tolerances. Note - golden samples are units that have been deemed representative of what the final product should look, feel, and perform like. It is the centerline for any query when inspecting subsequent production runs. In contrast, edge pilot samples set tolerance limits that cannot be exceeded for mass-produced units.

In deep conversation with regards to the stand tolerances.

Close-up shot comparing an unpolished stand pulled straight out of its mold (right) and a completed stand unit (left). The completed stand obtains its smooth surface through multiple rounds of machining and manual polishing, as well as a four-step painting process.

A handy diagram on transparent film for appearance defect measurements.

Finally, take a look at this video footage of the stand inspection process by our team.

Spectrum inspection and testing

Now that we’ve had a good look at the stand inspection process, let’s switch gears to the inspection process for the mass-produced monitors.

When testing the Spectrums, there are several procedures that need to be adhered to strictly.

  1. Ambient temperature:25±5°C

  2. The Lighting environment must be sufficient lit for the purpose of inspection. Screen test environment should be conducted between 250~800 Lux while appearance test environment should be conducted in environment in excess of >1000Lux

  3. When conducting visual checks, the product should be kept at distance from eyes of between 30~40cm. While the observation angle should be kept at a horizontal orientation of 45°±15°

  4. During the inspection, visually scan the entire product surface at the distance and angle required for 10s ±5s, first check the appearance followed by function. The appearance inspection should be performed in the order from top to bottom and from left to right.

  5. Inspection personnel should possess normal vision or corrected vision of 1.0 or greater, with no colour vision deficiency or colour blindness

In addition, per our limited warranty, we have the following criteria for the inspection team to be mindful of:

  1. Bright spot: a single pixel or a set of pixels illuminated on a dark screen regardless if the
    image is red, green and/or blue. This pixel defect is considered as a bright spot

  2. Dark spot: a single pixel or a set of pixels unable to illuminate on a full white screen
    regardless if the image is red, green and/or blue. This pixel defect is considered as a dark spot

So, with that in mind, here is a small selection of the tests that are conducted on the Spectrums.

Test Items Test conditions Issue for judgment
Device power on/off Turn on / Turn off monitor in quick succession (1 sec interval) Total of 3 repetitions
Energy saving mode From any mode Enter energy saving mode (in time)
Screen Brightness Full white display screen Meets specs (450 nits typical)
Instrument for displaying color
Brightness uniformity Multiple Meets specs (Lmin/Lmax)*100≥80%
Brightness ratio of 4 corners to center
OSD HDMI/DP/USB-C (video) Check navigation: increase / decrease values smoothly
Automatically display status changes
Brightness adjustment check Full white screen
Audio check HDMI/DP/USB-C (video) to PC, play audio
Compatibility check Multiple devices

Other tests include verifying the USB ports, ground resistance, dielectric strength, and current leakage, as well as DDC data detection.

Now, on to the footage.

Our 3rd-party QC team taking pictures of the backside of our in-box stickers. They captured each and every surface of elements included in the whole Spectrum package, including the box itself.

Display appearance inspection.

Tweaking Chroma – a machine that generates a wide variety of video source patterns – to obtain the optimal image for quality check.

One of the compatibility tests with a laptop, involving testing all video input and USB ports.

And, last but not least, here is some video footage of the Spectrum inspection process.

That’s it! Thanks for taking this stroll down the inspection lines with me. Have a great weekend!