HDTV

NuVision NVU65FX5 65" LCD Flat-Panel HDTV

On The Bench

Equipment used: EyeOne Pro spectrophotometer, CalMAN Professional 3.3 analysis software, Accupel HDG-3000 signal generator, Spears and Munsil Benchmark Blu-ray disc.

Since the Custom mode is the only one that allows calibration, I measured and calibrated that mode. The other picture modes simply change the presets for the various functions like brightness, contrast, color temp and the like. There are four color temp memories which can be individually calibrated. I used Normal as the basis for my calibration. I performed a factory reset before taking the baseline measurements. All pre-calibration graphs below reflect out-of-the-box settings.

The color space for HDMI inputs is pretty close to the HD standard, Rec 709. Only green is a bit off but the Delta E is only 4.5, a barely visible error. Luminances are fair with deviations of between 1 and 5 foot-Lamberts; again a barely visible error.

I used the Normal color temp memory as the basis for my calibration. At the default settings it measures only slightly cool. Though it is not accurate in this state, the image is still perfectly watchable.

After calibration, the secondaries are much closer to the targets. The Ideal Secondaries chart shows the correct positions relative to the primaries actual measurements rather than the Rec 709 targets. This is very good performance. Only yellow has a barely visible error of 4.1 Delta E.

Achieving flat grayscale tracking is more difficult on LCD panels than other display types. The NVU65 showed excellent results here. With an average Delta E of 1.2 and very flat gamma tracking, this TV delivers excellent grayscale performance.

Contrast performance was excellent in comparison to other LCD panels. After calibration the minimum black level was .0106fL and the peak white level was 37.95fL for an on/off contrast ratio of 3580:1. ANSI contrast measured 1277.6:1. These numbers were achieved with the backlight set at 20 percent. At the factory default of 80 percent, peak white measured 94.5fL.

The NVU65 uses NuVision’s proprietary video processing solution which they call NiDO IV. I ran tests covering the most commonly used de-interlacing and upscaling parameters. The only test not passed was 2:2 video mode de-interlacing. The bleachers in the Super Speedway test showed moiré during the entire clip. All other cadences passed this test locking on in less than one second. The film mode tests looked very good with near-instant lock-on.

24p signals from Blu-ray disc are handled correctly with a 5:5 pulldown to the TV’s native 120Hz refresh rate. The FFM frame interpolation feature worked perfectly with no observed artifacts. Though it is not my personal taste, some people do like the smooth motion this feature creates. The NVU65 has the best frame interpolation I have seen to date.

Overscan was zero in the 1:1 pixel mode with no pixels cropped. In the 16:9 mode there was approximately 1.5 percent overscan.

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