Tektronix 1910 - Page 18

Specification-1910 Operators
Table 1-4 (cont)
I P rf Ck
t I
S
P rf
e ormance
upp emen a
e.
Characteristics
Requirements
Information Step. No.
Phase
33° ±10
Luminance Amplitude
50 IRE ±O.S IRE
Group Delay
Equal
to or less than 10 ns
Baseline Perturbations
0.5 IRE or less
Line Timing
See Fig. 1-4D.
INVERTED PULSE
& BAR
I
Reference Bar
I
Amplitude
100 IRE
±0.7 IRE
Rise Time 250 ns ±25 ns
Pulse-to-Bar Ratio
1:1 ±1%
2T Pulse HAD
250
ns ±25 ns
Baseline Perturbations
0.5 IRE or less
Timing See Fig. 1-4E.
VIRS (Vertical Interval
Reference Signal)
Chrominance
Reference
Amplitude
40 IRE ±OA IRE
Phase
Same as burst ± 0.3 0
Envelope Rise Time 1 !J.s ± 100 ns
I
Time (Sine-squared
shaped)
Average Level of
70 IRE ±0.7 IRE
Chromlnance Signal
Luminance Reference
50 IRE Level
50 IRE ±O.S IRE
Black Reference
7.5 IRE
± 0.5 IRE
Line Timing
See Fig. 1-4F.
1-16