Operation Manual Part 3

Digital Liquid Cooled UHF
TV Equipment
Description / Test points / Location of units
9946 V1
45321648.01 104 A E
preliminary
89 / 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.
removable handle (ref. 91 568 218) which can be inserted into the upper part of the heat sink. A
marine type enclosure including custom-built wrapping is used to house the amplifiers in complete
safety during long journeys.
3.10.12. Environmental Conditions
Liquid temperature for guaranteed specifications : 0 to 55 °C.
Liquid temperature for guaranteed operation : -10 to 60°C.
Storage temperature (ampli empty) : .-30 to 60 °C.
Maximum altitude in operation : 3000 m.
Relative humidity : 95 % without condensation.
Cooling : Water + glycol (50% diluted) + corrosion inhibitor
3.10.13. Electrical Characteristics
The electrical characteristics below are given for above environmental conditions, 50 V mains supply
and nominal liquid flow of 6l/min.
Input max. level without destruction: 20 dBm max.
Output power (2 dB compression on VSWR ≤ 1.2 and 650 ≤ F ≤ 750 MHz):
2100 W min.
Continuous power in CW sinusoidal mode : 960 W max.
Instantaneous bandwidth : 650 to 750 MHz.
Gain at 719 MHz for Ps=570 W CW :
63 ± 0.2 dB.
Gain linear distortions (650 to 750 MHz for Ps=960 W CW):
±0.75 dB max. ±1.5 dB
Reference electrical length at 720 MHz :
27.64 ns. ± 5 ns
Gain flatness between amplifiers (with selective under band switch) :
± 0.3 dB max.
Phase flatness between amplifiers :
± 10 ° max.
Gain tilt in bandwidth : 0.1 dB/MHz max.
Phase tilt in bandwidth : 1 °/MHz max.
Max. consumed current at 1000 W r.m.s : 115 A.
Minimum efficiency at 570 W r.m.s : 23 %.
Input matching in bandwidth : 17 dB min.
Output matching in bandwidth: 14 dB min.
Harmonic level for Ps=1600 W peak on 50 Ohms load : H2......26 dB min.
Front face coupling sample :
49 dB ± 1 dB.
Shoulder level without correction on multi carrier signal, (8 MHz band, 1600 W PEP): 25 dB.
Thermal protection (Temperature measured on slab) :
80 ± 5 °C.
Guaranteed max. pressure (airtight-Ness) : 7 bars.
Shoulders for Ps = 570 W r.m.s (with MODAP) : -36 dBc max.
MER for Ps= 570 W r.m.s (with MODAP) : 33 dB min.
Transistor junction temperature (liquid temperature = 60°C for 960 W CW) : < 170°C max.
Min. liquid flow : 5l/min.
3.10.14. Physical characteristics
Measurements with handle (L x H x P) : 70x600x720 mm.
Weight : 19 kg max.