Summary
High performance dot mask 20" CRT from Hitachi. The CM814 is the second-highest performing dot mask 20" Hitachi offered - it can scan up to 125kHz horizontal. It is preceded only by the CM815.
In the manual, the maximum resolution is listed as 1856x1392@71Hz with 270MHz of available video bandwidth - however on Hitachi's website it is quoted as 300MHz and a max res of 2048x1536@75Hz.
With the extremely high horizontal scan range and high video bandwidth provided, you should be able to reach 2048x1536@75Hz if desired.
It has been confirmed that the vertical refresh can go up to 200Hz on this model, despite the manual noting the max as 160Hz.
Manuals
Notes
It seems there is currently no way to adjust RGB bias, sub contrast and some other options without the factory calibration software, which is currently lost media. Thankfully, RGB gains are adjustable through the user-facing OSD.
There are barely any pictures of these online - I have never found one myself. If you own a working one please submit some pictures.
Gallery
| Specifications | |
|---|---|
| Brand: | Hitachi |
| Manufacturer: | Hitachi |
| Model: | CM814U |
| Series: | SuperScan |
| Viewable Size: | 20" |
| Inputs: | VGA |
| Sync: | HV Sync, CSYNC, Sync on Green |
| Native Resolutions: | VGA, SVGA, XGA, SXGA, UXGA, QXGA |
| Horizontal Scan Range: | 31 kHz, 125 kHz |
| Vertical Scan Range: | 50 Hz, 200 Hz |
| Aspect: | 4:3 |
| Adjustments: | Internal Potentiometers, OSD Customer Controls |
| Tube: | Hitachi |
| Deflection: | 90° |
| Mask: |
Shadow
|
| Pitch: | 0.26 mm, .26 mm |
| Tint: | Dark, Matte Anti-Glare |
| Removable Glare Film: | No |
| Speakers: | None |
| Weight: | 60.6 lbs (27.5 kg) |
| Application: | Computer Monitor |
| Cabinet Material: | Plastic |
| Country of Manufacture: | Japan |
| Mounting: | Desk Stand |
| Degaussing: | Automatic on Power-on, Manual |
| Tag: | Needs Service Manual, Needs Measurements, Hall of Fame, Needs Yoke Info, Needs Tube Info, Needs Pictures |
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