User`s manual

63
Icon
Port Name
Function
USB2.0 port.
Connect to USB2.0 storage device , mouse,
burner and etc..
RS232（RS-422）
RS232 debug
COM.
It is for general COM debug to configure IP
address or transfer transparent COM data.
VGA
VGA video
output port
VGA video output port. Output analog video
signal. It can connect to the monitor to view
analog video.
2.2.15 NVR58 Series
The NVR58 series rear panel is shown as below. See Figure 2-38.
Figure 2-38
Please refer to the following sheet for detailed information.
Port Name
Function
Power button
/
Power on/off button.
Power input
port
/
Input AC 220V power.
MIC IN
Audio input
port
Bidirectional talk input port. It is to receive the
analog audio signal output from the devices
such as mike phone, pickup.
MIC OUT
Audio output
port
Audio output port. It is to output the analog
audio signal to the devices such as the sound
box.
1-16
Alarm input
port 1-16.
 There are four groups. The first group is
from port 1 to port 4, the second group is
from port 5 to port 8, the third group is
from 9 to 12, and the fourth group is from
13 to 16. They are to receive the signal
from the external alarm source. There
are two types; NO (normal open)/NC
(normal close).
 When your alarm input device is using
external power, please make sure the
device and the NVR have the same
ground.
Ground end
Alarm input ground end.