VeEX MPA User Manual page 278

MPA_e_manual_D07-00-129P_RevA00
STS-<#> Added
VT Added
Background STS-
<#> Pattern
Selects foreground STS# of the mapped signal.
When available, select the STS-<#> Added button to enter
the number of the specific STS channel to set as the
foreground (source) channel. The default setting is 1. The
source channel can be used to transmit alarms, errors, or
patterns.
For example, this setting selects which of the four STS-
48c channels in an OC-192 signal is the foreground channel,
the channel not selected are considered background
channels.
Select ALL to replicate the transmitted foreground test
channel over all background channels.
When All Path mapping is selected, this setting is
renamed to SPE Added.
Selects foreground VT# of the mapped signal.
When available, select the VT Added button to enter the
number of the specific VT channel to set as the foreground
(source) channel. The default setting is 1. The source
channel can be used to transmit alarms, errors, or patterns.
This option appears when VT mapping is selected.
Allows the user to select the type of pattern to be inserted
into the remaining background channels for the SONET
signal.
Select one of the following patterns:
PRBS 9, PRBS 9 Inv,
PRBS 15 Inv, PRBS 20,
23 Inv, PRBS 31, PRBS 31
value).
This setting is disabled when the STS-<#> Added setting
is set to All.
PRBS 11, PRBS 11 Inv,
PRBS 20 Inv, PRBS
Inv, or a User Defined
SONET Tab
PRBS 15,
23, PRBS
(32-bit
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