Viavi MSAM Manual page 33

Setting
Sync Loss Criteria
Sync Loss Criteria
Pattern Mode
(User Defined
patterns only)
Reacquire Sync
The pattern is selected for your test.
January 2016
Sync
X
X
Data Communications and Diphase Testing Manual
21148872, Rev. 002
Chapter 2 Data Communications Testing
Async Value
– Low. Declares pattern sync loss
when 100 bit errors are counted in
less than 1000 bits.
– Medium. Declares pattern sync
loss when 250 bit errors are
counted in less than 1000 bits.
– High. Declares pattern sync loss
when 20,000 bit errors are
counted in less than 100,000 bits.
– Never. Never declares pattern
sync loss regardless of error rate.
X – Low. Declares pattern sync loss
when 30 character errors are
counted in less than 60 received
characters.
– High. Declares pattern sync loss
when 20,000 bit errors are
counted in less than 100,000 bits.
– Never. Never declares pattern
sync loss regardless of error rate.
X – Continuous. Sends the pattern
continuously after you start the
test.
– Single. Allows you to insert one
repetition of the pattern, followed
by a series of ones.
– ASAP. Reacquires synchroniza-
tion as soon as possible.
– Test Restart. Reacquires syn-
chronization the next time you
restart a test.
Selecting a BER pattern
Page 17