5260 and 5280 Adjustments | Video - 29 | |
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R500
Sub-Brightness
Control
20Adjust the Sub- Brightness control (R500) to decrease the brightness until the screen luminance measures one of the following:
•20 ±3 on the bottom scale of light meter Model R77
•20 ±3 foot candles on the red scale of light meter Model 246
•25 fl (foot lamberts) on a photometer
•Between 9 and 10 on light meter Model L- 248
