Procedure

In general, signal levels stronger than –80 dBm will provide reliable communication in the network. RSSI measurements and Wireless Packet Statistics are based on multiple samples over a period of sev- eral seconds. The average of these measurements is displayed by the RSSI screen.

In the steps below, the path to the Menu System item is shown in bold text.

1.Verify the Remote is associated with an Access Point unit by observing the LINK LED. It should be on or blinking.

2.View and record the Wireless Packets Dropped and Received Error rates. This information will be used later.

Main Menu>Performance Information>Packet Statistics

3. Read the RSSI level at the Remote.

Main Menu>Performance Information>Internal Radio Status

4.Optimize RSSI by slowly adjusting the direction of the antenna. Watch the RSSI indication for several seconds after making each adjustment so that the RSSI accurately reﬂects any change in the link signal strength. The less negative the number, the stronger the signal.

5.View the Wireless Packets Dropped and Received Error rates at the point of maximum RSSI level. They should be the same or lower than previously noted.

Main Menu>Performance Information>Packet Statistics

If the RSSI peak results in an increase in the Packets Dropped and Received Error numbers, the antenna may be aimed at an undes- ired signal. Try a different antenna heading.

NOTE: Access Points and Remote stations must use the same antenna polarity (vertical or horizontal) or signal strengths will be attenuated by 20 dB or more.

05-4558A01, Rev. C

MDS Mercury Series Startup Guide

MDS 05-4558A01 specifications

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