Specifications
S-5
ANT-20/ANT-20E
PDH MUX/DEMUX
2.3
Offset measurements
All offsets in the hierarchy stages in the measurement path are measured simultaneously and
displayed.
Display in ppm
2.4
Error measurements (anomalies)
The error measurements are described in the “Specifications” for the mainframe instrument.
The frame alignment signals in all hierarchy stages of the selected path are checked
simultaneously.
2.5
Alarm detection (defects)
The detected alarms are described in the “Specifications” for the mainframe instrument. The
RDI alarms in all hierarchy stages of the selected path are checked simultaneously.
2.6
Evaluation of test signals for bit error measurements
2.6.1
Internal evaluation
Evaluation:
•
in all timeslots (framed pattern to ITU-T O.150/O.151)
•
in the selected timeslot
2.6.2
External signal (with option 3035/90.20 only)
Output of a signal with bit rate 34 368 kbit/s (coaxial), 8 448 kbit/s (coaxial) or 2 048 kbit/s
(coaxial or balanced) for external evaluation is alternative or simultaneous with internal
evaluation (see Sec. 2.6.1).
The interfaces for this are described in the “Specifications” for the “STM-1 mapping” options.
