ARM Electronics DVRCD120 - Manual (Page 39)

User’s Manual
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The first three items are used to select the data that you want be purged. The
items are described as follows. After select the data you want to purge, set the
forth item to and press ENTER to start the deleting
process.
Purge All Data
Select the item to delete all normal recorded video from database.
Purge All Event Data
Select the item to delete all event video from database.
Purge Event Before
The item is used to delete event video that recorded before a specific date.
4.6 Dome Control
Full-featured MPEG-4 DVR allows user to control a dome camera by the
front panel.
In Live mode, user can press CHANNEL key to display the desired dome
camera in full view. To enter Dome Control mode, press the DOME key and
press channel key 2 to display the hint screen; to exit the Dome Control mode
and back to live mode, press ESC or DOME. To configure the dome controls
settings, see the following sections.
4.6.1 Dome Connection
Follow the steps to install dome camera.
• See OSD Menu Setup Guide, Section Rear Panel Connections for RS-485
port pin definition.
• Refer to the following figure. Connect the R+, R- terminals on the dome
camera to the D+, D- terminals on the RS-485 port by RS-485 cable
respectively.