1253 B&K Precision, 1253 Datasheet - Page 18
![GENERATOR HANDHELD HDTV PATTERN](/photos/39/32/393292/1253_sml.jpg)
1253
Manufacturer Part Number
1253
Description
GENERATOR HANDHELD HDTV PATTERN
Manufacturer
B&K Precision
Type
NTSC Handheldr
Specifications of 1253
Patterns
ANSI, Bar, Checker, Crosshatch, Focus, Multiburst, Needle, PLUGE, Raster, Staircase, Window
Connection Method
BNC, S-Video
Power Source
9V Battery
Equipment Type
NTSC Color Generator
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
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10: Staircase
Description:
11 equal-width vertical bars step from black at 0 IRE (7.5 IRE for NTSC) on the left, to 100
IRE (white) on the right.
Pattern Usage:
Useful for visually checking gray-scale tracking performance of a display. Poor
performance is seen as a primary color tint (red, green, or blue), especially at the bright or dark end of the
pattern. Also useful for adjusting gray-scale tracking by eye, when a color analyzer is not available.
Each step of the Grey Bars should appear as a distinctive brightness level. Adjust the display cutoff/bias
controls for a neutral dark gray tone at the dark end of the pattern. Adjust the display drive/gain controls
for a neutral bright gray tone at the bright end of the pattern. This pattern is also good as a reference input
signal when troubleshooting and signal tracing luminance or color amplifier problems within a display
device.
Examples of Uncalibrated Displays:
The following images indicate a TV with the Brightness and/or
Contrast levels are not set properly.
Too Dark
Too Bright
Blacks blend together
Not Black