DVB-T Modulator

NO

Item

Technical Specifications

1

Channel Coding

Modulation

Hierarchical parameters

Alpha-1,2,4

Modulation Level

2K,4K,8K

Guard Interval

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

Encoding Rate

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

Modulation Mapping Constellation

QPSK,16QAM,64QAM

Network mode

Single frequency network, multi-frequency network

Bandwidth

8MHz,7MHz,6MHz

Supports all DVB-T and DVB-H mode

2

Data input

Stream input

2 Way DVB ASI input

BNC type connector

Impedance 75 Ω

Support level and non-hierarchical modulation

Source treatment

Under the multi-frequency network PCR correction, rate adaptive processing

In the single frequency network under a static buffer delay

Clock Reference

Frequency

10MHz   BNC 50 ohm

Frequency stability

>0.05ppm(Internal),>0.5ppb(External)

Electrical level

100mV-3Vpp

Time reference

Frequency

1PPS    BNC 50 ohm

Frequency stability

<16us

Electrical level

TTL

3

IF  utput

Output Impedance

50Ω

Output Frequency Range

32-42Mhz (Adjustable )

Output Level

105dBuv

Gain stability

±0.2dB

Frequency shoulder

<-46dBc(2K),<-56dBc(8K)

MER

<-42dBc

4

RF Output

Connector

N ,50Ω

Frequency

45-862MHz  Step 1Hz

Frequency stability

≤80Hz(10MHz internal reference)

≤1Hz(10MHz external reference)

Level

0 ~ 20dBm,Step 0.5dB

RF Monitoring

-20 ~ 0dBm

Electrical level stability

±0.3dB

Stop Rejection

< -50dBc

MER

< -40dBc

Fluctuation band

±0.5dB(Center frequency ±3.8MHz)

Group delay

±10ns(Center frequency ±3.8MHz)

Phase Noise

100Hz    < -80dBc/Hz

1KHz  < -83dBc/Hz

10KHz  < -100dBc/Hz

100KHz  < -105dBc/Hz

1MHz   < -120dBc/Hz

5

Non-linear pre-distortion

Phase correction

-6 - +20 degrees

Amplitude correction

Maximum 12dB

Calibration point

16 points, defined by the user

Linear pre-correction

Amplitude correction

±10dB

Range resolution

0.1dB

Group delay

±2000ns

Group delay resolution

10ns

6

Test mode

Single-Tone Mode

PN sequence output

7

Control Interface

10/100Mbps Ethernet, WEB-based network management

192x32 LCD display

6 Keys

3 alarm indicator lamps

8

Environment

Power Supply  AC 90-240V  50/60Hz

Power consumption  40W

Operating temperature -10~50°C

Storage temperature -10~70°C

Dimensions L 318mm W 483mm H 44mm

Weight 5kg