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Setting the Interfaces
Setting SDH THRU Mode
3. Payload/Channel Overwrite: In this mode you can overwrite the payload as
explained in the following text. Any Path B3 BIP errors are recalculated before
transmission. Use the HOW TO procedure to setup your instrument for THRU
Mode operation.
STM-0, STM-1 and STM-0 optical, STM-1 optical
You can substitute a new payload, Section Overhead (SOH) and Path Overhead
(POH) in the received STM-0/1 signal for testing.
STM-4, STM-16 and STM-4 optical, STM-16 optical
The overhead and payload may be overwritten for AU-4 and AU3. PAYLOAD
OVERWRITE is not available for AU-4-4c or AU-4-16c.
SOH overwrite is available for AU-4-4C and AU-4-16c.
HOW TO:
1 Make the required SIGNAL RATE choice on the SDH
"Setting SDH Transmit Interface " page 29.
2 Make the PAYLOAD OVERWRITE choice required
Hitless Mode: The Payload Overwrite enable/disable field (next to the
PAYLOAD OVERWRITE field) defaults to OFF.
If AU-4, AU-3, TU-3, TU-2 or TU-12 is chosen, the B1, B2 and B3 BIPs are
recalculated before transmission and the Mapping, Selected TU, TU Payload,
Pattern, Tributary Offset and Pattern in other TU's settings are displayed. To
choose the settings in these, See "Setting SDH Transmit Interface " page 29,
steps 4 through 10.
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display. See
TRANSMIT
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