User Manual

MDR5800 User Manual
862-01881 Issue 6 Page 58
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.