EXFO FTB-8510B Guia Del Usuario página 872

SONET Tabs
Section OH TX/RX (SONET)
The following controls are available with SONET/SDH Intrusive through
mode only (optional):
The Overwrite check box when enabled, allows the generation of the
selected byte. The byte can be selected by clicking on its blue label.
The byte having its Overwrite check box selected will have its
hexadecimal value on a yellow background. A byte having its
hexadecimal value with a gray background cannot be overwritten.
The Overwrite LED indicates if there is any byte in any timeslot having
the Overwrite check box selected (LED is green) or not (LED is gray).
Disable All allows to clear the Overwrite check box for all bytes in all
timeslots.
The following section overhead byte values are displayed in hexadecimal
format. However, a common field allows to see the value of specific byte in
binary format. Click on the blue label of a byte and its binary value will be
displayed in the common field beside the Timeslot selection.
A1 and A2: Framing. The value should be hexadecimal F6 for A1 and
28 for A2.
J0/Z0
J0: Trace: STS-1 #1 of an electrical or OC-N signal. J0 is only available
when the Enable Trace check box from the Section TX (SONET) on
page 213 is cleared.
Z0: Growth: STS-1 #2 to STS-1 #N of a OC-N signal.
B1: BIP-8. This byte is not programmable from this tab
E1: Orderwire.
F1: User.
D1, D2, and D3: Data Communications Channel (DCC).
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FTB-8100 Series Transport Blazer