Milestone XProtect Express 2014 - Manual (Page 57)

Milestone XProtect ® Express 2014 Administrator's Manual
www.milestonesys.com 57 Advanced configuration
database’s records is used for storing audio. If you use very high frame rates, which
means less time between each JPEG, a smaller portion of the database is used for storing
audio records, and consequently a larger portion is available for storing video. The result is
that the database runs full sooner, and automatic archiving takes place more often than if
you were only recording video.
The above examples are simplified. The exact available video storage capacity also depends on
GOP/JPEG and audio kilobyte size.
About dedicated input/output devices
You can add a number of dedicated input/output (I/O) hardware devices to your system. For
information about which I/O hardware devices your system supports, see the release notes.
When you add I/O hardware devices, input on them can be used for generating events in your system
and events in your system can be used for activating output on the I/O hardware devices. This means
that you can use I/O hardware devices in your events-based system setup in the same way as a
camera.
With certain I/O hardware devices, the surveillance system must regularly check the state of the
hardware devices' input ports to detect whether input has been received. Such state checking at
regular intervals is called polling. The interval between state checks, called a polling frequency, is
specified as part of the general ports and polling properties (see "Ports and polling" on page 110). For
such I/O hardware devices, the polling frequency should be set to the lowest possible value (one tenth
of a second between state checks). For information about which I/O hardware devices require polling,
see the release notes.
Show or hide microphones or speakers
If you have added more microphones or speakers to your system than you need, you can hide the
ones you do not need by right-clicking the relevant microphone or speaker and select Hide. If you
need the hidden microphone/speaker again, you can right-click the overall microphone or speaker icon
and select Show Hidden Items.
Configure hardware devices
Once you have added hardware devices, you can specify/edit device-specific properties, such as the
IP address, which video channels to use, which COM ports to use for controlling attached PTZ (pan-
tilt-zoom) cameras, whether to use 360° lens technology, etc.
1. Expand Advanced Configuration, expand Hardware Devices, right-click the relevant
hardware device, and select Properties.
2. Specify Name and video channels, Network, device type and license (see "Network, device
type, and license" on page 61), PTZ device (see "PTZ device (properties)" on page 62), and
360° lens (see "Fisheye" on page 98) properties as required.
3. Save your configuration changes by clicking Save in the yellow notification bar in the upper-
right corner of the Management Application.