Grass Valley TTV 1657D - Manuel (Page 113)

Chapter 1 - Main characteristics 113
THOMSON TTV 1657D
User manual
B1657D902C
Septembre 2000
Standards:
• 625/50 PAL, Components,
• 525/60 NTSC, Components.
Sensors:
• IT 4/3 750 Pts or IT 16/9 - 4/3 1000 Pts,
• FIT 16/9 - 4/3 1000 Pts or FIT 16/9 - 4/3 1250 Pts,
Optical system:
Prism separator, f/1.4, RGB, electronic color temperature fitted with:
Version 1
• One wheel with 4 manually controlled density filters (1=Clear, 2=1/2, 3=1/4, 4=1/16)
or
• Two motor-driven wheels: one with 4 density filters (1=Clear, 2=1/2, 3=1/4, 4=1/16).
One with 4 effect filters (A=Clear, B=Star 4 , C=Clear center, D=Fog).
Version 2
• One wheel with 4 manually controlled density filters (1=Clear, 2=1/4, 3=1/16, 4=1/64)
or
• Two motor-driven wheels: one with 4 density filters (1=Clear, 2=1/4, 3=1/16, 4=1/64).
One with 4 effect filters (A=Clear, B=Star 4 , C=Dense fog, D=Light fog).
Lens mount:
Standard bayonet mount.
Video processing:
Digital: 12bits.
Signal to Noise ratio (625 lines):
Lens closed, black level = 70 mV, HP 100 kHz and LP 5 MHz filters, γ=1,0 dB,
Contour OFF, Masking OFF eff S/N on luminance ≥ 60 dB.
Sensitivity:
• Test conditions: 0 dB, 90% white reflectance, 3200°K, lens aperture = f/8
• FIT or IT type CCD’s: 1600 lux.
Modulation depth for 400 line TV (5.1 MHz for 4/3 or 6.8 MHz for 16/9):
For luminance: >55% (Contour OFF) and 100% after correction (Contour ON).
Registration
(*)
:
Zone 1: 20 ns - Zone 2: 30 ns - Zone 3: 40 ns.
(*) depending on lens used.