Axis Communications user manual Rear Panel, Axis 2120 User’s Manual Physical Description

AXIS 2120 User’s Manual Physical Description 9

The Rear Panel

RS-232 Serial

Connector

The serial connector provides the RS-232 interface for con- necting a modem, or the con- nection for the AXIS 2191 Audio Module. For pinout information, see Appendix D - The Unit Connectors.

I/O Connector

Provides the physical interface to a digital output, and a single digital photo-cou- pled input that is used for connecting a variety of external alarm devices to the AXIS 2120 including, IR-sensors, switches and alarm relays. In combination with the con- figurable alarm facilities, you can quickly develop a variety of security applications that are triggered on time - or alarm based - events. The connector can also be uti- lized as an alternative connection point for DC power to the unit. For pinout infor- mation, refer to Appendix D - The Unit Connectors.

Power Supply

Connector

A single Jack socket (PS-D) for connection of the AXIS 2120 power supply. The ter- minal block connector provides an auxiliary connection point for AC or DC power to the unit.

Power Indicator

Normally lit when power is applied. If it is not lit, or it flashes, there is a problem with the AXIS 2120 external power supply.

DC-Iris Connector

With the DC-Iris cable con- nected to the lens upon delivery, this socket pro- vides the power and elec- tronic signalling to the lens of the AXIS 2120.

For instructions on how to change the DC Iris settings, refer to Adjusting the DC-Iris Settings, on page

Network Connector

The AXIS 2120 is designed for 10 Mbps Ethernet and 100 Mbps Fast Ethernet networks and connects to the network via a twisted pair category 5 cable (10baseT and 100baseTX), terminated using a standard RJ-45 connector. Supporting NWAY, the AXIS 2120 detects the speed of the local network segment and varies the speed of data com- munication accordingly (between 10 Mbps and 100 Mbps)..

Network Indicator

After completion of the startup and self test routines, this multi-colored indicator flashes independently, as follows:

•yellow - activity on a 10Mbps network

•green - activity on a 100Mbps network

•red - no physical connection to the network

Note: The power supply for your AXIS 2120 is country specific. Please check that you are using the cor- rect type. See page 10.