User's Manual

10 Eye configuration 27
7signal Ltd, Panuntie 6, FI-00620 HELSINKI, FINLAND, [phone], [e-mail], www.7signal.com
7signal Sapphire Carat Carat User Guide Release 3.1
2. At the bottom right, under “Manage Eye software version in Carat,” select “Import”
3. Browse to the desired monitoring station software version in the Carat server file
system and select “Open”; the software is displayed in the “Eye Software Versions
Available in Carat” list
4. Click on the software version you want to install
5. At the top right, under “Manage Eye,” check the “Install” checkbox
6. Select “Execute”
10.2 Initial network scan
When the Eye has been installed or needs to be reconfigured, you must run a network scan.
There are various preconfigured scanning durations. When an Eye has been installed for the
first time, it is recommended that you run the longest scan, titled “Initial scan.” The purpose of
the initial scan is to scan the monitoring station’s radio frequency environment very
thoroughly and to detect the access points suitable for monitoring.
Network scan type
Description
Estimated duration (all antennas and
channels) for channels 1-11 excl. 5 GHz
Initial
First deployment
15–20 min
Slow
Thorough
7–9 min
Regular
Normal
3–4 min
Fast
Quick
less than 1 min
The scan results are presented in a table. An initial scan should be run whenever substantial
physical changes have been made in the environment being monitored (for example, new or
removed walls), or if the Eye’s location has been changed.
The table contains the following information about the WLAN access points detected:
• Network name (ESSID)
• Encryption methods supported by the access point
• MAC address of the access point
• Channel
• Management status (if not known, denoted as “Unknown”)
• Antenna that hears the access point best
• Access point signal strength
• Noise level
The access points in the service area must have a management status. Setting a management
status means that the access point’s existence is acknowledged. Unacknowledged access
points prompt issuing of an alarm if such an alarm has been configured. The management
statuses are as follows:
• Managed: Monitored by this monitoring station
o The recommendation for signal strength is >-65 dBm
• Own: Own access point managed by another monitoring station
• Known: An access point that is an accepted part of the radio frequency environment
(for example, a neighboring network)
o If possible, ensure the access point operates properly and can be accepted
• Unknown: An access point without a monitoring status
o In practice, this status should exist only during network scans in new service
areas; it should not exist in normal use