ClearView SD4250 User Manual

SD4250

USER MANUAL

All-in-one encoder and modulator for dual SD source. Allows 4 sets of Audio/Video source to be extended

throughout a traditional coaxial by encoding the SD service to MPEG2 and distributing this service using the DVB-T

standard used in Europe, Australia and New Zealand.

Features

 Support 4 component video inputs
 Support MPEG2 video encoding
 Support MPEG1 Layer 2audio encoding
 Support 480i/576i video format
 DVB-T RF output
 Support LCD / keyboard operating, and network management (web)

SD ENCODER AND
MODULATOR YPbPr &
CVBS TO DVB-T

DIGITAL RF

PRODUCT INTRODUCTION

1. RJ45 port for remote upgrade or setup.

2. LCD Window

3. Indicators

4. Control Buttons

5. RF Signal test port

6. Grounding: to connect the earth cable

7. AC 110-240V: power input

8. RF out: to distribute modulated signal

9. RF in: to combine input RF signal

10. Component video input supporting PAL and NTSC

Technical Specifications

Encoding Section - Video

Encoding

MPEG2 MP@ML

Interface

YPbPr*4

Resolution

720×576_50i (PAL); 720×480_60i (NTSC)

Bit rate

4.000-12.000 Mbps

Encoding Section – Audio

Encoding

MPEG 1 Layer ll

Interface

Stereo *4

Bit Rate

128, 256, 384 kbps

Modulator Section

Standard

DVB-T COFDM

Bandwidth

6M, 7M, 8M

Constellation

QPSK, 16QAM, 64QAM

Code rate

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

Guard interval

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

Transmission mode

2K, 8K

MER

>38 dB

RF frequency

50~860MHz

RF output level

75~90dBuV

Technical Specifications

System

Management

Local control: LCD + control buttons/ Remote:RJ-45 web setting

Language

English

LCN Insertion

Yes

Upgrade

RJ-45 web setting

General

Power

AC110-220

Dimensions

440*280*44mm

Weight

< 2.5 kg

Operation temperature

0~45 ℃

SAFETY INSTRUCTION

Safety Technical Specifications

WARNING: Hot plug is not allowed since it may cause system failure.
To prevent fire or electrical shock. Do not expose the device to rain or moisture.

The encoder modulator is powered with a voltage of 110 V to 220 V AC.

The power supply voltage must not exceed the recommended voltage, which otherwise may cause irreparable
damage to the device and the invalidation of the warranty.

Therefore:

• Do not replace power supply with a voltage greater than 110 V to 220 V AC

• Do not connect the device to the power if the power cord is damaged.

• Do not plug the device into mains supply until all cables have been connected correctly.

• Do not cut the cord.

Avoid placing the device next to central heating components and in areas of high humidity.

Do not cover the device with elements that obstruct the ventilation slots. If the encoder modulator has been kept in
cold conditions for a long time, keep it in a warm room minimum 2 hours before plugging into the mains. Mount the
device in vertical position with the connectors located on the top side. When replacement parts are required, be sure
the service technician has used replacement parts specified by the manufacturer or have the same characteristics as
the original part. Unauthorized substitutes may result in fire, electric shock or other hazards.
Safety check- Upon completion of any service or repairs to this device, ask the service technician to perform safety
checks to determine that the device is in proper condition.

Installations

RISK OF damage to the unit

Mechanically handling the unit may result in damage.

Do not connect the unit to the power supply before or during assembly.

Connect the unit as below instructed.

NO HOT PLUG!

1. Connect cables to audio/video source. The signal source can be from a surveillance monitor, DVD, set-top box,

CCTV and etc.

2. Optionally, connect the loop-through RF input coaxial cable.

3. Connect cable to RF output to STB/TV.

4. Power supply connection:

a) Connect the power plug to the unit mains connector;

b) Connect the power plug to the mains socket.

5. Connect the earth cable.