The Digital VRC21-Hx monitor is a 21" multiscan monitor, and was supplied with most AlphaStation 455-type workstations. It has onboard digital tuning, but was before the era of the on-screen display.Consequently, you need the manual to figure out how to tune the thing. Of course, these go missing after several changes of owner, and I couldn't find one on the web anywhere.
I recently moved office, and in the cleanup, found a pristine copy of the original DEC manual for this model. The book includes text in several languages, however I have only scanned those pages that are in English. The pages are 100dpi, greyscale scans in JPEG format, roughly 130k per page.
You can either view them one by one: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, and 15, or download a compressed archive of the collection in ZIP or gzipped tar format.
A quick summary of the tuning information (most likely the bit you need) is:
|LED 1 (left)||LED 2||LED 3||LED 4||LED 5 (right)|
|Colour 1 (9300 deg Kelvin)||blink||off||off||off||on|
|Colour 2 (6500 deg Kelvin)||off||blink||off||off||on|
|Colour 3 (Green gain)||on||on||off||off||on|
|Colour 3 (Blue gain)||off||on||on||off||on|
|Colour 3 (Red gain)||off||off||on||on||on|
|PCC Amp Fine||on||on||off||off||off|
For all except the Colour 1 and Colour 2 settings, use the arrow keys to change between setting and the +/- keys to set the value. With the white balance colours, +/- shift between colour 1, colour 2 and the custom settings for colour 3 (to return to colour 2 from 3 use the arrows?).
PCC Amp Fine adjusts the bowing at the centre of the image only, PCC Amp adjusts the bowing of the entire image. PCC Phase adjusts the relative size of the top vs. bottom of the screen.
Key balance adjusts the slant and pin balance moves the centre of the image left or right.
#From: email@example.com (Jay Estabrook) #Date: 21 May 1997, 22:00:00 AEST Section "Monitor" Identifier "DEC VRC21-Hx" VendorName "DEC" ModelName "VRC21-Hx" HorizSync 30-85 VertRefresh 50-152 EndSection