Televes T.0X 565301, User Manual

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HDTV TRANSMODULATOR - Dual ATSC/QAM to QAM
8
4.0 Block diagram
Up-converter
A
Up-converter
B
QAM Modulator
A
Demodulator
A
Input
A
QAM Modulator
B
Demodulator
B
Proccesing/
Multiplexing
Input
B
Input
Stage
Output
Stage
RF
INPUT
RF
OUTPUT
QAM
Output
( )
4.1 DUAL ATSC/QAM to QAM transmodulator
4. Technical Specifications
Table 1 . Technical specifications
Input
Input impedance Ohm 75 Loop-through losses dB <1.5
In/Out connectors type “F” female
ATSC input
Input modulation 8-VSB Input Level dBmV -26 to +35
Input frequency MHz 57 ... 803 Frequency steps MHz 1
QAM input
Input modulation QAM 64, 256 (annex B)
Input Level dBmV
-23 to +35 (64QAM)
Input frequency MHz 42 ... 1002 -18 to +35 (256QAM)
Frequency steps MHz 1
QAM
Modulator
Annex B
Output modulation QAM 64, 256 j83B Symbol rate dB
5.056 (64QAM)
5.360 (256QAM)
QAM
Modulator
Annex A
Modulation format QAM 16, 32, 64, 128, 256, 512, 1024
Symbol rate (max) Mbaud 7.2
Roll-off factor % 15 (12 for 1024 QAM)
RF Output
Frequency range (agile) MHz 12 ... 1002 Loop-through losses dB < 1.5
Frequency steps MHz 1 MER dB > 40
Output level dBmV 43 (Loop ON) / 55 Loop OFF In/Out connectors type “F” female.
Adjustable level (min.) dB 20 Out Impedance ohm 75
General
Powering voltage Vdc 24 Consumption 24V mA 620
Protection index IP 20 Working temperat. ºF
<113
(use forced ventilation at higher temp)