EXFO IQS-8100 Series Transport Blazer for IQS-600 - Manual (Page 539)

System Tab
SONET/SDH Application 525
Clock Synchronization
³
Frequency: The Frequency alarm indicates if the received signal rate
meets (green) or not (red) the following rate specifications.
Frequency Analysis
³
Frequency (bps) displays the received signal rate in bps for DS1 and
E1 interfaces and in Hz for 2 MHz interface.
³
Frequency Offset displays the positive or negative frequency offset
between the standard rate specification and the rate from the received
signal. Frequency unit can be set to bps, or ppm for DS1/E1 and is set
to Hz for 2 MHz. The default setting is bps for DS1/E1 and Hz for 2 MHz.
Signal Rate specification
DS1 1544000 ±15 bps (±9.2 ppm)
E1 2048000 ±19 bps (±9.2 ppm)
2MHz 2048000 ±19 Hz (±9.2 ppm)