11Viewing images across the network using a web browserIt is possible to use Microsoft Internet Explorer (version 5.X and above) andNetscape Navigator (version 4.7X) to view images from a BX2. Follow the previousinstructions to display the BX2 web page, but click on the ‘Web viewer’ iconinstead of the ‘PC viewer application’ icon. It will be necessary to enter ausername and password at this point, the default username and password isuser and password.Note: The web viewer does not have all the features of the Network ViewingSoftware, but it is useful if it is not possible to download the software, or if youwant to view the images from an offsite location i.e. via the web.Viewing images across the network using an Apple Mac or LinuxThere is support for viewing images using an Apple Mac or Linux based operatingsystem using Netscape Navigator 4.7X web browser.Connecting 485-bus devicesBX2 uses the 485-bus networking system to allow multiple BX2s, remotekeyboards, alarm modules, video switchers, and other accessories to be connectedtogether. The total length of the 485-bus network can be up to 1500m (4900ft).Connecting alarms and relaysBX2 has on-board alarm connections, labelled ‘AUX ALARMS’ on the rear of theunit. Each alarm input can be assigned to any camera in the ‘Alarms and Presets’menu page. Pins 1-20 are used as alarm contacts, Pins 21 to 25 are used asground connections.Note: By default, pin 17 is used as a global alarm input, this can be changed inthe ‘Alarm Setup’ menu page.Alternatively, an optional alarm module (DM/CI01) can be used to connect alarmsto the BX2. The advantage of using alarm modules is that the alarm connectorsdo not have to be routed back to the BX2. Multiple alarm modules can be usedon the 485-bus with alarms connected to each module.BX2 has on-board relay connections, labelled ‘AUX RELAYS’ on the rear of theunit. Each relay output is assigned to the corresponding camera input, i.e.The connection between pins 1 and 20 is assigned to camera 1, pins 2 and 21is camera 2 etc. Any activity on the camera will close the corresponding relay.Alternatively, an optional relay module (DM/CI02/16) can be used.