40
following points:
To defer aging, do not allow the pc monitor to run for a long time.
Regular demagnetization will keep device maintain proper status.
Keep it away from strong electromagnetic interference devices.
Using TV as video output device is not a reliable substitution method. You also need to
reduce the working hour and control the interference from power supply and other
devices. The low quality TV may result in device damage.
3.6
Connecting Audio Input & Output, Bidirectional Audio
3.6.1 Audio Input
These series products audio input port adopt BNC port.
Due to high impedance of audio input, please 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.
3.6.2 Audio Output
The audio output signal parameter i
s 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 to reduce happening of the squeaking.
3.7
Alarm Input and Output Connection
Please read the followings before connecting.
1.
Alarm input
a. Please make sure alarm input mode is grounding alarm input.
b. Grounding signal is needed for alarm input.
c.
Alarm input needs the low level voltage signal.
d. Alarm input mode can be either NC (normal Open) or NO (Normal Close)
e. When you are connecting two DVRs or you are connecting one DVR and one other
device, please use a relay to separate them,
2.
Alarm output
The alarm output port should not be connected to high power load directly (It shall be less
than 1A) to avoid high current which may result in relay damage. Please use the co
contactor to realize the connection between the alarm output port and the load.
Содержание HCVR8204A-S3
Страница 1: ...Dahua HDCVI Standalone DVR User s Manual Dahua HDCVI Standalone DVR User s Manual V1 3 1 ...
Страница 30: ...20 Name Parameters XVR8808S XVR8816S Installation Mode Desktop rack installation ...
Страница 54: ...44 Figure 3 3 3 10Other Interfaces There are still other interfaces on the DVR such as USB port 485 Port ...
Страница 77: ...67 Figure 4 24 Figure 4 25 ...
Страница 171: ...161 Figure 4 133 Step 2 Click Add user button in Figure 4 133 The interface is shown as in Figure 4 134 Figure 4 134 ...
Страница 184: ...174 Figure 4 147 Figure 4 148 ...
Страница 185: ...175 Figure 4 149 Figure 4 150 ...
Страница 194: ...184 Figure 4 159 Step 2 Draw tripwire 1 Click Draw button to draw the tripwire See Figure 4 160 Figure 4 160 ...
Страница 198: ...188 Figure 4 163 Step 2 Draw the zone 1 Click draw button to draw the zone See Figure 4 164 Figure 4 164 ...
Страница 200: ...190 Figure 4 165 Step 2 Draw the zone 1 Click draw button to draw the zone See Figure 4 166 Figure 4 166 ...
Страница 202: ...192 Figure 4 167 Step 2 Draw the zone 1 Click Draw button to draw a zone See Figure 4 168 Figure 4 168 ...
Страница 213: ...203 Figure 4 177 Figure 4 178 ...
Страница 220: ...210 Figure 4 186 Figure 4 187 ...
Страница 221: ...211 Figure 4 188 Figure 4 189 ...
Страница 227: ...217 Figure 4 194 Figure 4 195 ...
Страница 240: ...230 Figure 4 208 Figure 4 209 4 16 2 Channel Name ...
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Страница 324: ...314 Figure 5 73 Figure 5 74 ...
Страница 387: ...377 Figure 5 155 Note For admin you can change the email information See Figure 5 156 ...
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Страница 446: ...436 Email overseas dahuatech com Website www dahuasecurity com ...