Technical Specifications - Televes HDTV TRANSMODULATOR - Dual 8PSK to QAM User Manual

HDTV TRANSMODULATOR - Dual 8PSK to QAM

4. Technical Specifications

4.0 Block diagram
PORT 1
Input
Stage
PORT 2
4.1 8PSK to QAM transmodulator
Table 1 . Technical specifications
Input selection options
Input frequency (agile)
Frequency steps
Satellite
Input modulation
input
Input level
PORT1-PORT2 isolation
Loop-through losses
QAM
Modulation format
Modulator
Frequency range (agile)
Frequency steps
RF Output
Output level
Adjustable level (min.)
Powering voltage
General
Protection index
(1) When using dual inputs, input signals should be correctly balanced to avoid undesired results.
QAM Modulator
Demodulator
A
Demodulator
QAM Modulator
B
SEE TABLE 2
MHz 950 - 2150
MHz 1
QPSK Legacy (EN300421)
Turbo 8PSK - Turbo QPSK
dBm -70 to -20
dB > 25
(1)
dB < 1.5
QAM 16, 32, 64, 128, 256, 512, 1024
MHz 57 ··· 999 (EIA Ch 2 to 158)
MHz 1
dBmV 38 ± 2
dB 20
Vdc 24
IP 20
Up-converter A
A
Up-converter B
B
Symbol rate Mbaud
QPSK Legacy
FEC
8PSK
Transmission filter
Roll-off Factor
In/Out connectors
Input impedance
Symbol rate (max) Mbaud
Roll-off factor
Loop-through losses
MER
In/Out connectors
Out Impedance
Consumption 24V
Working temperat.
Output
QAM
Stage
Output
10-30
Viterbi 1/2, 2/3, 3/4, 5/6, 7/8
Reed Solomon (204, 188)
Interactive Turbo Error Correction
Reed Solomon (204, 188)
Square Root Raised Cosine
QPSK legacy
%
8PSK-TC
QPSK-TC
type "F" female
ohm 75
6.9
% 15 (12 for 1024 QAM)
dB < 1.5
dB > 40
type "F" female.
ohm 75
mA 600
ºF <113 (use forced ventilation at higher temp)
8
35
20