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I
Test Descriptions
Color Test Descriptions Delay Inequality, Differential Gain, Differential Phase)
Delay
Inequality Test
Description
N O T E
The analyzer internal frequency calibration routine should be done at the temperature the test will be
performed for best accuracy
Non-standard timing between the 2T and pulses will return values that
are offset by up to 25 ns. The in NTSC systems is 125 ns. A 2T pulse
has a half amplitude duration of 250 ns for NTSC; pulse has a half
amplitude duration of 1.5625
The delay inequality test measures the time delay between the
low frequency luminance component and the high frequency chrominance
component of the modulated pulse in the composite test signal. Refer
to Figure 8-14.
MAR 86. 1995
CHRNNEL
REF 26.46 AT
P A C K
E
T
OIF GAIN PHASE
LIN
REF
-1.30
DIFFERENTIAL GAIN
DIFFERENTIAL PHASE
__ packet: NO)
300 3 MHz
MENU
Figure g-14. Chrominance-to-Luminance Delay
8-35