HIK VISION DS7208HVI-ST/SE User manual

Product Maintenance Manual

（HIK/DS7208HVI-ST/SE）

Functional Characteristics：

VGA video output resolution topped 1024 * 768；

The first channel support 4 CIF real-time coding, the others channel

support CIF real-time coding；Support preview images and playback image of

electronic amplification；

VGA, VIDEO OUT can be simultaneously screen preview, of which the main

output can output menu operation；

Support four channel synchronous playback;

Support one SATA interface;

Support NTP (network school), SADP (automatic search IP address)

agreement.

1. DS7208HVI-ST/SE Equipment Physical Interface

2. DS7208HVI-ST/SE Equipment Internal Structure

3. DS80054 Mainboard Hardware Principle Diagram

4. DS80054 Mainboard Hardware Modules Diagram

5. DS80054 Mainboard Hardware Module Introduction

5.1. Audio Video A/D Module

5.2. VGA Output Module (Local Preview Image Output Module)

5.3 VOUT Output Module (Local Preview Image Output Module)

5.4 Network Module

5.5 SATA Module

5.6. RS485 Module

5.7. Clock Module

5.8. Voice Talkback Module

5.9. Power Supply Module

6. DS80054 Mainboard Failure Analysis

6.1. First Meet VGA Display

6.2. First Meet VOUT Monitor

6.3 Fault Analysis

①. No VGA Output

②. No VOUT Output

③. Image Problem

④. Voice Problems

⑤.RS485 Failure

⑥. Internet Links

⑦.SATA Hard Dish Fault

⑧. Clock Fault

⑨.VGA Output Color Devation

⑩.USB Fault

Schedule: 1 Crystal Effect

Schedule:2 Voltage Effect

1. DS7208HVI-ST/SE Equipment Physical Interface

Note: DS7208HVI-ST/SE equipment some no RS485 interface

2. DS7208HVI-ST/SE Equipment Internal Structure

SATA power interface

Front-panel

12V power interfac

SATA interface

Panel line interface

Panel line

USB line

USB interface

3. DS80054 Mainboard Hardware Principle Diagram

DSP

Network

（RTL8201）

TW2866

（US1）

FLASHDDR∏

SP491

SGM9111

UTP

Interface

USB

VGA

Interface

VOUT

Interface

SATA

interface

LVC07A＋6303

RS232

interface

RS485

interface

Audio in

Video in

Audio out

AOUTinterface

Diagram1.1 DS80054 Hardware Principle Diagram

Note：

TW2866 (US1) support 1 road audio and 4 road video input, voice talkback Line In input

and AOUT output

VGA signal output directly from KY2010 chip, the external circuit by LVC07A + 6303

control VGA output amplification

VOUT signal directly from KY2010 chip output, the external circuit control by SGM9111

VOUT signal amplifier output

no alarm input/out of modules

4. DS80054 Mainboard Hardware Modules Diagram

Diagram 1.2 DS80054 Mainboard Hardware Modules Diagram

5. DS80054 Mainboard Hardware Module Introduction

5.1. Audio Video A/D Module

Video A/D Module Main Control Chip：TW2866 Audio

1) TW2866（US1）PIN 6 control first audio input（input matching resistance

100 (RU9) and capacitance (CS18)）

2) TW2866（US1）PIN 13/17/21/25 control 1-4 road vedio input（BNC input

matching 4 HK-5 production tube（TVS2/4/6/8 ）； 4 75Ωresistance

（RV2/4/6/8 ）； 4 100Ωresistance （RU1/2/3/4 ）； 4 capacitance

（CS12/8/13/11））

3) TW2866（US2）PIN 13/17/21/25 control 5-8 road vedio input（BNC input

matching 4 HK-5 production tube（TVS1/3/5/7 ）； 4 75Ωresistance

VGAmodule

RS485module

USB interface

Network module

VOUT module

SATA

power

module

A/D module

Power module

SATA interface

Clock module

RS232 interface

Network module

Front-panel interface

（RV1/3/5/7 ）； 4 100Ωresistance （RU5/6/7/8 ）； 4 capacitance

（CS42/48/29/33））

27 M (Y4) : TW2866 work clock, PIN 82 input 27 M

Audio video A/D module component：

Ω（

RV1-8

）

HK-5

（

TVS1-8

）

5.2. VGA Output Module (Local Preview Image Output Module)

VGA main chip module：LVC07A, 6303; LVC07A PIN 2 output single(VS)

and 1 K resistance (RL50) connect 5V voltage, PIN 4 output signal (HS) and

1 K (RL51) resistance connect 5V voltage

BAV99: control VGA output amplification, if BAV99 (Q9) 3 feet low level

(voltage 0 V), it means the system to detect VGA display; If you meet VGA

display, system and output signal and system menu VGA; If behind the VGA

display, the system only output VGA signal; If the high level (close to 3.3 V),

it means the system does not detect the display

VGA signal output basic schemes:

27M

（

）

100

Ω（

RU1-4

）

（

CS12/8/13/11

）

100

Ω（

RU9

）

TW2866

（

US1

）

（

CS18

）

100

Ω（

RU5-8

）

（

CS42/48/29/33

）

TW2866

（

US2

）

①: PIN 10 output “R” signal ;

②: PIN 11 output “B” signal ;

③: PIN 12 output “G” signal ;

④: PIN 4 output “HS” signal ;

⑤: PIN 2 output “VS” signal ;

VGAmaster chip : 74LV07 and 6303

Description:

74LV07

PIN4

PIN2

RL50

1KΩ

RL51

1KΩ

VS(Interlacing signal)

HS(Line signal)

BAV99 :

If the PIN 3 of BAV99(Q9) is Low-level ( 0V ), Said system detects VGA

monitor;

If the PIN 3 of BAV99(Q9) is high-level (nearly 3.3V),said system doesn’t detect

VGA monitor;

VGA module components：

6303

74LV07

75Ω(RG6)

75Ω(RG5)

75Ω(RG4)

BAV99(Q3)

BAV99(Q8)

BAV99(Q7)

②

①

③

④

⑤



5.3 .VOUT Output Module (Local Preview Image Output Module)

VOUT main control chip: SGM9111, PIN 3 pull-down 75Ωresistance

(RS188) grounding and input CVBS-OUT signal, PIN 4 through the

75Ωresistance (RS117) output VOUT signal, working voltage through a

WCX(FBS48) for 5V power supply

VOUT interface TVS protection tube: VOUT interface connect HK-5 (TVS9)

VOUT signal output basic schemes:

LVC07A

BAV99

（

Q3/7/8/9

）

6303

Ω（

RG4/5/6

）

（

RL50/51

）

Ω（

RG30/31

）

SGM9111

CVBS-VOUT

Pin3 input

75Ω

（RS188）

Pin4 output

75Ω（RS117）

VOUT

FBS48

DSP

Pin5

VOUT Module components：



5.4. Network Module

Network module components：

SGM9111

Ω（

RS117

）

WCX

（

FBS48

）

Ω（

RS188

）

HK-5

（

TVS9

）

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