User Manual

SPEEDCOM SC5800 User Manual
54
6.7 RF Link Error Status Monitoring
Selected by right-clicking the relevant antenna and choosing the Diagnostics/Error
option.
6.7.1 RF Link Status
Link Unavailable The RF Link is considered not available (see Link Availability definition on
next page).
Frame Unlock RF link only. It looks at data received from the link. If the link is quality is
poor ( i.e., high PER at the RF level, ‘Frame Unlock’ is the result). AIS is
sent from the transceiver (from link direction) as long as ‘Frame Unlock’ is
true and no reliable data is available.
Packet Error Rate
Fault
The PER Monitoring has been enabled and the Instantaneous PER has
exceeded the configured PER Fault Threshold for the RF link.
ESR Exceeded RF Errored Second Ratio has been exceeded due to Packet errors on the
RF link.
SESR Exceeded RF Seriously Errored Second Ratio has been exceeded due to Packet
errors on the RF link.
BBER Exceeded RF Background Block/Packet Errors Ratio has been exceeded due to
block errors on the RF link.
Default RF
Parameters
Activated
The Operational RF parameters were programmed into the Outdoor Unit by
the local and remote Indoor Units. Communication between the two Indoor
Units has not reactivated within 5 seconds. To recover communication the
Indoor Unit has selected the ‘Default’ RF parameters and programmed the
Outdoor Unit with them.
6.7.2 Packet Error Rate Thresholds
Packet error rate (PER) is calculated as the ratio of the number of uncorrectable
blocks over the number of blocks transmitted per second. Three PER thresholds
are provided for each monitored link, these are:
• Minor PER Threshold – this threshold defaults to 0.0002 and triggers an alarm
if the calculated PER exceeds this value.
• Major PER Threshold – this threshold defaults to 0.02 and triggers an alarm if
the calculated PER exceeds this value.
• Fault PER Threshold – this threshold defaults to 2.0 and triggers an alarm if the
calculated PER exceeds this value.