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Setting the Interfaces
Setting DSn THRU Mode (option 012)
Setting DSn THRU Mode (option 012)
Description
THRU mode is used to non-intrusively monitor DSn lines where no protected
monitor points are available.
Note that since THRU mode locks some user settings, you must set SIGNAL RATE
(DS1 or DS3), before selecting THRU mode.
Two modes of operation are possible:
Monitor Mode: This is when the Entire Frame Error Rate field is set to OFF. In this
mode the received signal is passed through or transmitted unchanged, and the
instrument monitors errors and alarms as normal DS1 operation.
Full Frame Overwrite Mode: In this mode any bit in the entire frame can be
errorred at a user defined rate. The bit that is errored can be any bit in the frame,
including the frame bit (hence the title of "Full Frame Overwrite"). The error rates
available are:
Data error rates: 1.0E-3, 1.0E-4, 1.0E-5, 1.0E-6, 1.0-E-7 and user programmable
in 0.1 steps from 1.1E-3 to 1.0E-9.
1 Make the required SIGNAL RATE choice on the PDH/DSn
HOW TO:
2 Select THRU MODE as shown in the figure above.
3 Select an entire frame error rate from the choices given or use the USER softkey
to program an error rate.
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displays.
RECEIVE
and
TRANSMIT
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