Dahua Technology DH-XVR1B04H User Manual

User’s Manual
51
Due to high impedance of audio input, use active sound pick-up.
Audio transmission is similar to video transmission. Try to avoid interference, dry joint, loose contact
and it shall be away from high tension current.
4.2.4 Audio Output
The audio output signal parameter is usually over 200mv 1KΩ (BNC or RCA). It can directly connect to
low impedance earphone, active sound box or amplifier-drive audio output device.
If the sound box and the pick-up cannot be separated spatially, it is easy to arouse squeaking. In this
case you can adopt the following measures:
 Use better sound pick-up with better directing property.
 Reduce the volume of the sound box.
 Using more sound-absorbing materials in decoration can reduce voice echo and improve
acoustics environment.
 Adjust the layout of speaker and pickup to reduce squeaking.
Connecting to Alarm Input and Output
Read the followings before connecting.
Alarm input
 Make sure alarm input mode is grounding alarm input.
 Grounding signal is needed for alarm input.
 Alarm input needs the low level voltage signal.
 Alarm input mode can be either NC (Normally Closed) or NO (Normally Open).
 When you are connecting two DVRs or you are connecting one DVR and one other device, use a
relay to separate them.
Alarm output
The alarm output port should not be connected to high power load directly (It shall be less than 1 A)
to avoid high current which might result in relay damage. Use the contactor to realize the connection
between the alarm output port and the load.
How to connect PTZ decoder
 Ensure the decoder has the same grounding with DVR; otherwise the PTZ might not be controlled.
Shielded twisted wire is recommended and the shielded layer is used to connect to the grounding.
 Avoid high voltage. Ensure proper wiring and some thunder protection measures.
 For too long signal wires, 120 Ω should be parallel connected between A, B lines on the far end to
reduce reflection and guarantee the signal quality.
 “485 A, B” of DVR cannot parallel connect with“485 port” of other device.
 The voltage between of A, B lines of the decoder should be less than 5 V.
Making sure the front-end device has soundly earthed
Improper grounding might result in chip damage.

Dahua Technology DH-XVR1B04H Specifications

General

Aspect ratio	16:9
Certification	FCC: Part 15 Subpart B CE: CE-LVD: EN 60950-1/IEC 60950-1 CE-EMC: EN 61000-3-2, EN 61000-3-3, EN 55032, EN 50130, EN 55024 UL: UL 60950-1
Product color	Black
Rack capacity	1U
Playback modes	Fast, Next, Pause, Play, Previous, Repeat, Shuffle, Slow, Stop, Zoom
Backup function	Yes
Channels quantity	8 channels
Multi-display modes	4, 8
Video capturing speed	60 fps
Maximum recording time	1 h
Audio formats supported	AAC, G.711, PCM
Network connection type	RJ-45
Maximum video resolution	1920 x 1080 pixels
Video compression formats	H.264, H.264+, H.265, H.265+
Analog signal format system	NTSC, PAL
Video capturing speed (PAL)	30 fps
Playback resolutions supported	1920×1080, 1280×1024, 1280×720
BNC input ports	8
BNC output ports	1
USB 2.0 ports quantity	2
HDD interface	Serial ATA
Maximum HDD capacity	6000 GB
DC voltage	12 V
Power supply type	DC
Power consumption (typical)	10 W
Package weight	1000 g
Storage temperature (T-T)	-20 - 70 °C
Operating temperature (T-T)	-10 - 45 °C
Storage relative humidity (H-H)	0 - 90 %
Operating relative humidity (H-H)	10 - 90 %
Number of users	128 user(s)
Ethernet interface type	Fast Ethernet
Supported network protocols	HTTP, HTTPS, TCP/IP, IPv4/IPv6, UPnP, RTSP, UDP, SMTP, NTP, DHCP, DNS, IP Filter , DDNS, FTP, Alarm Server, P2P, IP Search

Weight and Dimensions

Depth	192 mm
Width	197 mm
Height	41 mm
Weight	540 g