Installation guide

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16. Audio Input and Output
Connect audio IN or OUT devices through RCA interface.
Audio Input
These RCA connectors accept audio signals supplied from external devices.
Audio Output
These connectors supply audio signals to external devices. Recorded audio will be supplied
from AUDIO OUT during playback.
17. Other Interface
The DVR have some application function for User. Please see the illustration as below:
USB Connector (Rear panel)
Connect the USB mouse to this connection.
USB Connector (Front panel)
Connect this port to USB 2.0 compatible storage device, such as USB 2.0 disk drive,
DVD+RW, , etc.
PTZ Device:
RS-485 Connector
Connect this connector to RS-485 compatible PTZ camera(s) or keyboard. Please set the
Selector Switch correctly.
If must join two pieces PTZ of the above,
Need to use the parallel way to join PTZ.
NOTE
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The Audio function cannot guarantee power issue. Please notice whether the microphone
spec can use or not.