Operation Manual Part 2

Digital Liquid Cooled UHF
TV Equipment
Description / Test points / Location of units
9946 V1
45321648.01 104 A E
preliminary
55 / 131
Numéro / Number Doc. Rev. Lan
g
u.
16/06/2006
Pa
g
e
Information contained is this document is confidential, is THOMSON property and cannot be disclosed in whatever form without prior written authorization of THOMSON.
3.2.11. General characteristics
3.2.11.1. Pre-correction
The pre-corrector option supports non-linear pre-correction (gain and phases vs power level) and
linear pre-correction (level and group delay response vs. frequency). The pre-corrector allows further
control of the peak power clip level (range + 17dB to +7dB peak power relative to average RMS
level).
Non-linear correction:
♦
Gain correction: Max 12dB, subject to available headroom
♦ Phase correction: -6 to +30 degrees, subject to available headroom
Linear correction:
♦
Correction points: 64
♦ Point spacing: 1/20 of nominal spectrum BW
♦ Amplitude correction: ±10dB
♦ Amplitude resolution: 0.01dB
♦ Group delay correction: ±2000ns
♦ Group delay resolution: 1ns
3.2.11.2. General Electrical Mechanical and Cooling Characteristics
Rack : 19” 1U desired, 2U max, depth 600 <mm
Main Consumption : < 200 VA
Cooling : Internal fan, air input on the front panel
Finish : THALES standard