Davicom Cortex 320, Справочное руководство

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Ground screw terminal – This terminal is used to connect the unit to the site’s electrical ground. It is of utmost importance
to provide an excellent ground to the unit in order to avoid or limit damage caused by lightning strikes or electrical problems.
Telephone line (requires a Davicom modem installed inside the unit) - Connects the unit to a phone line for remote access
by computer or by using DTMF tones. It also allows the unit to send alarm calls by modem or voice.
Power Fail (P.F.)
- Monitors the presence of the main AC utility power through the use a small external AC adapter. When
the voltage derived from the main AC utility power falls below a specific level, this input will change level from normal to
active. It can be set to trigger alarms and advise users that a power outage occurs at the site. THIS IS NOT THE UNIT’S
POWER SUPPLY INPUT.
Protection fuse - 3-amp fuse protection on power supply inputs.
DC input power jacks – Redundant 4-pin XLR connectors provide power to the unit. Any one of the two inputs can be used
at any time to power the unit, or both at the same time. These two power inputs allow for power redundancy. The power
rating is either 12 VDC @ 3 Amps, OR 24 VDC @ 1.5 Amps, but any voltage between 10 and 30 VDC can be used. VERY
IMPORTANT
: Do not mix different power supplies on these inputs (for example, do not use 12 volt and 24 volt power
supplies at the same time). Only use power supplies having the same output voltage.
1.3.3.
Front panel (CORTEX 320)
CORTEX-320 front panel
POWER LED - Indicates status of the unit’s power. It is on when the unit is under rated power.
ALARM LED - Shows the Alarm status. If there is one or many alarms, the LED will be on.
COMMUNICATIONS - Shows the unit’s call-out status. It will turn on every time the unit makes an outside call (telephone,
email, SNMP Trap, etc.)
USER ONLINE - Indicates if one or more users are connected to the unit.