Alarm Function - Sony SNC-Z20N Specifications

Versatile Interfaces
AC 24V/DC 12V/Power-over-Ethernet
Operation
The SNC-Z20 offers a choice of three different power
supplies. AC 24 V or DC 12 V can be supplied
through the standard power terminal. Power can also
be supplied via an Ethernet CAT5 cable from an IEEE
802.3af-compliant power supply system
DC 12 V, or PoE (Power-over-Ethernet) is automatically
selected according to the power supplied.
* Network equipment capable of supplying IEEE 802.3af-
compliant power is required. Please contact a local Sony
office or authorized dealer for recommended network
equipment.
PC Card Slot* Fig. 3
A built-in PC card slot on the front panel of the
SNC-Z20 enables the user to increase the SNC-Z20
storage capacity for post-alarm recording by adding
either a flash ATA memory card or an ATA hard disk
drive (HDD) card. IC recording media such as a
"Memory Stick TM " media card with a Memory Stick/PC
card adaptor can also be used. In addition, the
SNC-Z20 is compatible with certain IEEE 802.11b-
compliant wireless PC cards, allowing for wireless
network operation.
* Please contact a local Sony office or authorized dealer for
compatible PC and wireless cards for use with the SNC-Z20.
Fig. 3 PC Card Slot
Fig. 4 Rear Panel
RS-232C Interface
(Transparency Function or VISCA
The SNC-Z20 has a transparency function available via
the RS-232C interface. This allows external equipment
connected to the RS-232C port of the SNC-Z20 to be
controlled from a PC over the network. Also, the
SNC-Z20 can be controlled with the VISCA protocol
from an external control device, allowing local control
of zoom and camera settings.
*
. AC 24 V,
Analog Composite Video Output
The SNC-Z20 can output an analog composite video
signal from a BNC connector located on its rear panel
(see Fig.
directly recorded or monitored by connecting video
equipment such as time-lapse recorders, hard disk
recorders, multiplexers, and monitors.

Alarm Function

Activity Detection/Alarm Trigger
The SNC-Z20 is equipped with a built-in activity
detection sensor that can be set to trigger an alarm or
a switch through alarm-output ports. If a change in
luminance level is detected in the field of view, an
alarm is automatically triggered. In addition, the
SNC-Z20 comes with an alarm-input port to receive a
trigger from an external sensor.
Pre-/Post-Alarm Image Storage
With the internal 8 MB buffer or a memory card
installed in the PC card slot, the SNC-Z20 can store
hundreds of pre-alarm and post-alarm still images at
an alarm trigger received either from the activity
detection sensor or the alarm input.
Image Transfer using FTP/SMTP
The pre-/post-alarm images stored at the time of an
alarm event can be transferred to an FTP server, and
the still image can also be sent to a specified e-mail
address as a JPEG attachment, enabling the user to
see what happened when an alarm occurred.
4). This allows the camera images to be
Protocol)
TM