EXFO IQS-8100 Series Transport Blazer for IQS-600 - Manual (Page 157)

Port Tabs
SONET/SDH Application 143
Port RX (Electrical Interfaces)
Alarm Analysis
Possible alarms that can be detected are:
³
LOS (Loss Of Signal): The LOS alarm indicates absence of an input
signal or an all-zeros pattern was detected.
³
Frequency: The frequency alarm indicates if the received signal rate
meets the standard rate specifications (green) or not (red).
Interface Standard Rate Specification
DS1 1544000 ±57 bps (±36.6 ppm)
E1 2048000 ±112 bps (±54.6 ppm)
E2 8448000 ±293 bps (±34.6 ppm)
E3 34368000 ±846 bps (±24.6 ppm)
DS3 44736000 ±1101 bps (±24.6 ppm)
STS-1e/STM-0e 51840000 ±1276 bps (±24.6 ppm)
E4 139264000 ±2730 bps (±19.6 ppm)
STS-3e/STM-1e 155520000 ±3826 bps (±24.6 ppm)