EXFO IQS-8100 Series Transport Blazer for IQS-600 - Manual (Page 358)

SDH Tabs
344 IQS-8100 Series Transport Blazer
HOP OH TX/RX (SDH)
HOP OH TX/RX (SDH)
The HOP OH TX allows changing the high order path transport overhead
information to be transmitted while the HOP OH RX allows verification of
the high order path transport overhead information received.
Press TEST, HOP, and OH (under HOP TX/RX).
Path Overhead
The following controls are available with SONET/SDH Intrusive through
mode only (optional):
³
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 on a gray background cannot be overwritten.
³
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).
³
Disable All allows to clear the Overwrite check box for all OH bytes in
the HOP.