Aviat Networks ECLIPSE EDGE, User Manual

Page: 152 / 274

106 Aviat Networks
Chapter 4. Eclipse Edge Configuration and Diagnostics
Link Menu Operation
Locks
Lock options are provided to force a condition or to change the online status of the
protected pairing.
• For protected ODUs:
• The primary-designated ODU is default online transmitting.
• Both ODUs are receiving, with hitless automatic selection on a block-by-block
basis of which ODU Rx stream is sent to the line/customer.
• The online Tx function can be changed using the locks to first force a change from
Auto to Secondary (or Primary), and then back to Auto.
• The Rx source can be locked to one ODU, or the other.
To change primary or secondary Tx online status:
1. Click the required Lock button.
2. Select
any timer option from the Safety Timer and click OK. Refer to Safety Timer
Operation.
3. To commit the selection click Send, and check that the change in online status is
confirmed.
4. Click Off (Auto), then click Send to return to normal protection operation, but with
the online status now confirming the new selection.
Alternatively, at step 2, a timer option can be selected (not less than 2 seconds) and
left to time out, whereupon the new online status is automatically committed.
Tx Mute and Loopback Selection
A Tx Mute applied on the online Tx of a hot standby or space diversity protected pair
will be interpreted by the remote receiver as a signal/path failure and result in a
‘silent transmitter’ switch action (the remote terminal signals the local terminal to
switch transmitter). If such a switch is not intended, first lock the Tx selection (Tx
Lock On).
A digital loopback selection removes all payload traffic over the link (local traffic to
the selected link is looped back to the line/customer interface).
For dual ODU protection the digital loopback selection applies to both ODUs of a
protected pair.
Safety Timer Operation
Figure 4-38
illustrates the operation of the safety timer function. To start a selection
or to manually terminate a selection, the Send button must be clicked to enable the
selection.
The operation illustrated assumes that: