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Hitachi CM828 21 inch CRT Monitor Review

Hitachi CM828 21 inch CRT Monitor Review - PCSTATS
Abstract: The CM828 is higher-end display that sports an even nicer display tube than the very economical CM810.
 86% Rating:   
Filed under: Monitors Published:  Author: 
External Mfg. Website: Hitachi Aug 01 2001   Max Page  
Home > Reviews > Monitors > Hitachi CM828

spec sheet and display evaluation criteria

Hitachi CM180 Specs
Picture Tube 21" picture tube, 0.21mm horizontal dot pitch, 0.20mm horizontal mask pitch. Invar shadow mask, black matrix, short persistence phosphors, anti-reflection coat.
Synchronization Horizontal: 31-115kHz, Vertical: 50-160 Hz
Resolution 2048x1536 pixels (we were only able to get 1600x1200 to display within the screen)
Signal Cable Dual 15-pin
Video Clock 230MHz typically
Viewable image size 406mm x 305mm (20" diagonally)
Colour Temperature 9300K, 6500K, 5000K, user defined
Warm-up time 30 minutes
Power Consumption 115W, 15W standby
Power 100-240VAC
Weight 27.5kg
Dimensions 488mm x 482mm x 470mm

Pcstats CRT Display Evaluation Criteria:

To aid our evaluation of Cathode Ray Tube based displays we work with a program called Nokia Monitor Test. The software has been designed specifically to help with the proper configuration of any display, but also has the added benefit of illustrating deficiencies in the quality of image being presented.

While glaringly obvious problems would be immediately obvious to anyone looking at a simple page of text, the monitor test program stresses the display to the 'limit'. By doing this we can see exactly where the strengths and weaknesses of a particular display lie.

The program consists of twelve multi-screen tests, each designed to test one particular facet of a displays' qualities. An example from each of the test-screen is shown below.

Geometry Brightness/Contrast
High Voltage Colour
Convergence Focus
Resolution Moire
Readability Jitter

Note: We let the monitor warm up for at least 30 minutes before attempting to perform our visual tests on the quality of the picture display. This gives the CRT time to reach optimal operating conditions.

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Contents of Article: Hitachi CM828
 Pg 1.  Hitachi CM828 21 inch CRT Monitor Review
 Pg 2.  — spec sheet and display evaluation criteria
 Pg 3.  Review Notes: Quality of the Hitachi display
 Pg 4.  the on screen display menu:
 Pg 5.  Conclusions on the CM828 display

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