User Manual

AS8100 Sitespan
Release Description
DLP 001
605-0000-449
Issue 1.1 Date 28/10/98
Page 5 of 2
5. Performance Monitoring
Performance measurements recorded at the Shelf and Subscriber Terminal can be
viewed. Performance alarms received from the equipment are logged and can be
selected for output to log files.
The modem view provides up link and down link BER for “Current” and “Previous”
reports. The “Current” field is the display of the BER status measured after the last
poll cycle and the “Previous” field shows the last reported BER value. If the link is not
established or not activated, “NO DATA” will be shown in the “Current” field.
Sitespan supports Radio Link monitoring of the ST transmit power, receiver levels and
code phase. This feature is only available when the radio link is fully operational.
Previous data will be shown when the link is not established.
ST AGC indicates the ST Automatic Gain Control used. A high AGC value means that
the ST receiver is set to low sensitivity. A typical setting will be between 1.0 and 1.5V
for a deployed ST. A low value means that the ST has high gain and is very sensitive.
ST PC indicates the current ST transmit power requested by the Central Terminal/ A
high value here indicates that the ST is transmitting at high power. The value for
maximum output is 3.0V.
St Code Phase indicates the time difference between the transmit and receive clock
synchronisation pulses. This figure could be used to calculate the approximate distance
between the ST and the CT.
6. Transaction Logging
As each Sitespan Server receives alarms/event notifications and polls for changes in
status, it updates its object model state accordingly and stores the state changes in a
log. When Sitespan Clients request Alarm views for example, an object class filter is
applied to the log in order to present the required information. Please refer to the
appropriate documentation for further information.