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VDH-DXN836 Hardware Manual

 

 

Pay attention to the following when you select a PC display instead of a 
monitor. 
1.

 

Do not remain switched on for a long time to extend the life of the 
equipment; 

2.

 

Regular degaussing will help to maintain the normal operation of the 
monitor. 

3.

 

Keep away from equipment with strong electromagnetic interference. 
 

Using TV as video output device is an unreliable alternative. It is also 
required to minimize the time of use and strictly control the power, the 
interference caused by neighboring devices. Leakage risks of low quality TVs 
may result in damage to other equipments. 
 

 

Audio Inputs 
Voice input impedance is high, so the microphone must be a microphone 
connected to the power supply. 
Like video input, voice transmission cables should avoid interference, fake, 
poor contact, and special attention to prevent the current of the 
high-voltage. 

 

Audio Output 
The audio output parameters of DVR are generally greater than 200mv 1KΩ 
(BNC), you can directly connect to the low impedance headphones, powered 
speakers or other sound devices through a power amplifier.   
When the external speakers and microphones can not achieve spatial 
segregation, it is prone to the phenomenon of whistling.   
You may adopt the following actions, 
1.

 

Using better directional microphones 

2.

 

Adjust the speaker volume to make it lower than the value of the 
generated howling. 

3.

 

Using sound-absorbing materials for decoration to reduce sound 
reflections and improve the acoustic environment; 

4.

 

Adjusting the layout of the microphone and speakers can reduce the 
whistling. 

 

 

RS-485 connection 
1.

 

Connect RS-485 cable of the speed dome to the RS-485 interface of DVR, 
pay attention to the positive and negative signals. 
 

2.

 

Connect the video output cable of the speed dome to the DVR video 
input 

Summary of Contents for VDH-DXN836

Page 1: ...Hardware Manual VDH DXN836 2017 MAR V1 0...

Page 2: ...cessories 3 2 Unpacking 3 D Installation 3 E Product appearance 4 1 Front Panel 4 2 Rear Panel 4 3 Installation Illustration 5 Video input 5 Connections for video outputs 5 Audio Inputs 6 Audio Output...

Page 3: ...age If this equipment connects to outdoor cameras or other external alarm devices ground this equipment to prevent it from electrical surges This DVR supports remote video monitoring via Internet Free...

Page 4: ...ks telecommunications power stations justice transport intelligence communities factories warehouses resources water conservancy facilities and other categories 2 Main functions Pentaplex Operation wh...

Page 5: ...nel data cable power cord power supply motherboard to see if they are connected firmly Front Rare panels The key functions of the front panel and the interfaces of the rear panel are described in deta...

Page 6: ...r POWER Indicator REC Indicator DVR REC Indicator LAN Indicator LAN Indicator 2 Rear Panel 1 16 channel Video Input 2 Audio Output 3 VGA output 4 HD Digital Output 5 LAN port 6 USB Mouse Port 7 2 chan...

Page 7: ...order to ensure the normal operation of the cameras Make sure the transmission cables are stable and reliable Adopt high quality well shielded coaxial cables and choose the right model based on the t...

Page 8: ...ke poor contact and special attention to prevent the current of the high voltage Audio Output The audio output parameters of DVR are generally greater than 200mv 1K BNC you can directly connect to the...

Page 9: ...r 4 Front video signal not stable 5 High temperature too much dust and the machine runs in a bad condition 6 DVR hardware error Q 3 HDD not found after power on A The possible causes 1 No power for th...

Page 10: ...playback A The possible causes 1 Low recording quality 2 Once data error when reading or small bit rate or fuzzy when playback please reboot machine 3 Wrong data cable or jumper error in the harddisk...

Page 11: ...software or Web browsers A The possible causes 1 Operating system is Win98 or Win Me and the client software can not be installed or displayed normally Upgrade the operating system to Win2000sp4 or ab...

Page 12: ...ong control address 2 Long distance or poor angle 3 Battery run out 4 Controller or DVR front panel is out of order Q 19 Short recording time A The possible causes 1 Bigger data rate from poor camera...

Page 13: ...l grounded so images audio signal will not be disturbed At the same time we can protect the DVR from static or inductive voltage damage Do not remove audio video cables and RS 484 when the DVR is powe...

Page 14: ...CIF Frame 16CH 1080P 12FPS CH NTSC 16CH 1080P 12FPS CH PAL Recoding Quality Lowest Low Normal Good High Highest Recording Mode Continuous Schedule Motion Manual Motion Detection Zones 192 16 12 grid P...

Page 15: ...Remote Setup Upgrade Features Daylight Saving Time DST Yes Internal Buzzer Motion Video Loss HDD Error Multi Language Yes more than 20 languages Firmware Update USB Network Remote Upgrade Network Time...

Page 16: ...Manufacturer FUHO TECHOLOGY CO LTD No 30 Lane 726 Sec 3 Jinma Rd Changhua City Phone 886 4 751 2881 Fax 886 4 751 6631...

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