ttq420

Twin digital transmodulator
DVB-T/T2/C to DVB-C/J.83B



Ordering number 03854F
Specifications

T Y P E

ttq420

Ordering number

03854F

Number of channels

2

RF input

frequency range

pr.

47-862 MHz

LNB powering/control

pr.

12 V  100 mA

level/impedance

40-80 dBµV / 75 Ω

loop through gain

0 ± 1 dB

standard

pr.

DVB-T

DVB-T2

DVB-C

modulation

QPSK, QAM16,
QAM64

QPSK, QAM16,
QAM64, QAM256

QAM16, QAM32,
QAM64, QAM128,
QAM256

bandwidth

pr.

7 MHz/8 MHz

7 MHz/8 MHz

-

symbol rate

pr.

-

-

1 ÷ 7.2 Ms/s

code rate

1/2, 2/3, 3/4,
5/6, 7/8

1/2, 3/5, 2/3, 3/4
4/5, 5/6

-

roll off

-

-

15 %

RF output

standard

pr.

DVB-C / J.83B

modulation

pr.

QAM16/QAM32/QAM64/QAM128/QAM256 (DVB-C),
QAM64/QAM256 (J.83B)

frequency range

pr.

100 - 858 MHz, by step 100 kHz

channel allocation

adjacent

level/impedence

90 ± 2 dBµV/75 Ω

return loss

≥ 14 dB at 47 MHz; -1.5 dB/oct., but not less 10 dB

spurious level

< - 60 dB

MER

≥ 40 dB

channel bandwidth / symbol rate

pr.

4...8.3 MHz / 3.5 ÷ 7.2 MS/s

roll off

15 %

signal processing

EN 300 429, J.83 A (Annex A)

total output level adjustment

pr.

0 ÷ -15.0 dB by 1 dB step

loop through frequency range/loss

47-2150 MHz  / ≤ 2.5 dB

Transport stream
parameters

max. bit rate

output 53 Mbps

max. PID filter count

unlimited

Management port

standard IEE802.3 10/100 Base T

Current consumption***

12 V  650 mA

Operating temperature range

0°C ÷ +50°C

Dimensions/Weight (packed)

48.5x198x112 mm/0.9 kg

pr. - software control

*** without external DC feeding and CAM, with two CAM’s ≈0.85 A (for tdq420C), ≈0.95 A (for ttq420C)