T Y P E

ttx420

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

channel 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-T / ISDB-T

modulation

pr.

QPSK/QAM16/QAM64 (DVB-T),
QPSK/DQPSK/QAM16/QAM64 (ISDB-T)

frequency range

pr.

100 - 858 MHz, by step 100 kHz

channel allocation

adjacent

level/impedance

90 ± 2 dBµV/75Ω

spurious level

< - 60 dB

MER

≥ 38 dB (100-780 MHz); ≥ 35 dB (780-860 MHz)

channel bandwidth

pr.

7/8 MHz

guard interval

pr.

1/4, 1/8, 1/16, 1/32

code rate

pr.

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

transmission mode

2K

total output level adjustment

pr.

0 ÷ -15.0 dB by 1 dB step

loop through frequency range/loss

47-862 MHz / ≤ 2.5 dB

Transport stream
parameters

max. bit rate

output 31670 kbps

max. PID filter count

unlimited

Management port

standard IEE802.3 10/100 Base T

Supply voltage

12 V ± 1 V

Current consumption without external load

650 mA

Current consumption with maximum external load

0.8 A

Operating temperature range

0°C ÷ +50°C

Dimensions/Weight (packed)

48.5x198x112 mm/0.9 kg