Mitsubishi C-3919: Difference between revisions
Correcting TVL from 600 to 576 (768 pixels × 3/4 aspect ratio conversion for proper TVL measurement) (via update-page on MediaWiki MCP Server) |
Adding TVL derivation section explaining calculation methodology (via update-page on MediaWiki MCP Server) |
||
| Line 54: | Line 54: | ||
* '''Linearity:''' Better than ±7% | * '''Linearity:''' Better than ±7% | ||
* '''Raster distortion:''' Less than 2% of raster height | * '''Raster distortion:''' Less than 2% of raster height | ||
== TVL derivation == | |||
The 576 TVL figure is derived from the maximum horizontal resolution supported by the AED 512/767 graphics terminals that drove these monitors. Per the AED users manual, the highest resolution raster mode is 768×575 pixels. | |||
Since TVL (TV lines) measures horizontal resolution across picture height, the horizontal pixel count must be adjusted for aspect ratio. For a 4:3 display: | |||
: 768 pixels × (3 ÷ 4) = '''576 TVL''' (addressable) | |||
This represents the theoretical addressable resolution. Effective resolution with real-world content would be lower depending on the Kell factor applied (typically 0.7 for interlaced content, ~0.85 for progressive/static graphics). | |||
Note that the monitor's 20 MHz video bandwidth (±3dB) could theoretically support significantly higher resolution — the raster addressing of the AED terminal is the limiting factor, not the monitor's analog circuitry. | |||
{{CRT voltage range | {{CRT voltage range | ||
