Wavetek ANT-20 Operating Manual - page 8
S-2
Specifications
M13 MUX/DEMUX
ANT-20/ANT-20E
1.3
Justification as per T1.107 or T1.107a
The bit rates in the upper and subordinate systems are in a fixed relationship to each other.
Justification is at a nominal rate (offset of upper and subordinate systems is identical).
Exception: Insertion of external signals.
M13
C parity
1.3.1
PDH tributary offset
Static offset for the PDH tributary bit rates during insertion into the SONET-SPE container.
The offset is an average value. The actual offset at any given time may be above or below this
value.
1.4
Error insertion (anomalies)
The error types are described in the “Specifications” for the mainframe instrument.
1.5
Alarm generation (defects)
The alarm types are described in the “Specifications” for the mainframe instrument.
The insertion of alarms (defects) or errors (anomalies) are mutually exclusive. The action
selected first is active.
Upper system
Justification ratio
Justification rate in kbit/s
DS2
0.335
1.8
DS3
0.39
3.544
Table S-2
M13 justification
Upper system
Justification ratio
Justification rate in kbit/s
DS2
0.073
0.393
DS3
1
9.398
Table S-3
C parity justification
Offset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
±
100 ppm
for all bit rates, relative to SONET-SPE container
Step width . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 ppm