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Bar Test Chart(IEC 61146)
The
Bar Test Chart(IEC 61146) is disigned and used to checking
the transmission characteristics of TV cameras at intermediate and deep
frequencies.In the upper part of the picture 4 black horizontal bars of
different length are arranged in a white surrounding.
In
the upper part of the picture 4 black horizontal bars of different
length are arranged in a white surrounding. The lower part is a mirror
image to the upper one; however white bars are arranged in a black
surrounding. A narrow vertical strip of black and white each are
located in the center of the picture. These strips resp. bars generate
puls signals of approx. 2 µs, 5 µs, 12 µs
and 32
µs.
Inadequate
transmission characteristics at intermediate and deep frequencies
generate streaking effects in scanning line direction. Streaking may
also be caused by defective clamping circuits. Long streaking (high
error-time-constancy) are clearly visible at the monitor. Short
streaking (low error-time-constancy) can be better observed in the
oscillogram. For this purpose an oscilloscope with a line selector has
to be used and the different bars may be observed one after the other.
Also the adjustment of streaking (e.g. compensation of afterglow of
flying spot scanners) should be effected with the aid of picture
monitor and oscilloscope.
The
narrow vertical strips in the center of the picture show echo
disturbances, as may occur e.g. with defective delay lines in circuits
for aperture corrections. The large black and white areas in both parts
of the picture are designed to asses shadings, background structure and
other errors. For this purpose the test chart may also be used upside
down.
Color Rendition Chart (X-Rite ColorChecker)
Scan Reference Chart
Universal
Test Target
Critical
Flesh Tones Test Chart
Bar Test Chart(IEC 61146)
White Balacing Test Chart
ISO 12233:2014 Edge SFR(eSFR)Test chart
Color Spilled Coins (Dead Leaves) Test Chart
Gray Scale Test Chart(11 steps)
Streaking Measurement Test Chart
Color Bar Test Chart
Gray scale chart
Grid Test Chart
ISO 12233 Enhanced digital camera resolution chart
Standard SFRplus Chart
SFRplus Chart on Photographic Paper QI-SFR10-P-RM
ITE Grayscale Chart II(Gamma = 1)
Black & White Spilled Coins (Dead Leaves) Test Chart
OECF Test Chart (ISO 14524)
ISO 12233: 2014 (eSFR)Photographic chart
ISO-14524 digital camera contrast chart
ISO-15739 digital camera noise test chart
ISO 12233 Digital still-camera resolution chart
Automotive Test Chart
SFRplus Chart: Inkjet on Paper - 4:1 Contrast Ratio
SFRplus Chart: Inkjet on Paper - 10:1 & 2:1 Contrast Ratio
Distortion Grid Test Chart
HDTV Gray Scale Test Chart
ITE Grayscale Chart I(Gamma = 0.45)
EIA RESOLUTION CHART 1956
Sector Star Test Chart (72 cycles)
Sector Star Test Chart (36 cycles)
HDTV Universal Test Chart
DTV Color Rendition Test Chart
36-Patch Dynamic Range Test Chart
Spectrometer
OHSP-350
OHSP350A Light
Spectrometer
HPL-200
Flicker illuminometer
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