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Setting Pointers and Changing Timing
CTS 710 SONET Test Set User Manual
3–155
Table 3–13: Pointer Sequences Generated (Cont.)
Pointer
Sequence
Description
Periodic 26–1
With Cancel
Sequence pattern is 26 pointer movements followed by 1 missing pointer
movement with a cancelled pointer movement at the 26th pointer,
yielding a gap of 2.
Time between VT1.5 pointer movements has a range of 1 s to 10 s with
a resolution of 1 ms.
Time between cancelled pointers is equal to: (time between pointers
27 N) where N is selected to be the smallest integer that makes this
product
30 s.
Periodic 26–1
With Add
Sequence pattern is 26 pointer movements followed by 1 missing pointer
movement with an added pointer movement after the 13th pointer.
Time between normal pointer movements has a range of 1 s to 10 s with
a resolution of 1 ms; time between added pointer movement and
previous normal pointer movement is 2 ms.
Time between added pointers is equal to: (time between pointers
27
N) where N is selected to be the smallest integer that makes this
product
30 s.
Single
Alternating
Alternating single pointer movement. The time between pointer
movements is 30 s.
Double
Alternating
Alternating double pointer movement. The time between the double
pointer movements is 2 ms, and the time between each pair of pointer
movements is 30 s.
Table 3–14: Availability of Pointer Sequences
ie e e e
Mapping
Po
i
nt
e
r S
e
qu
e
nc
e
STS VT1.5
Single
✔ ✔
Burst
✔ ✔
Phase Transient
✔ ✔
Setting Pointers and Changing Timing
CTS 710 SONET Test Set User Manual
3–155
Table 3–13: Pointer Sequences Generated (Cont.)
Pointer
Sequence
Description
Periodic 26–1
With Cancel
Sequence pattern is 26 pointer movements followed by 1 missing pointer
movement with a cancelled pointer movement at the 26th pointer,
yielding a gap of 2.
Time between VT1.5 pointer movements has a range of 1 s to 10 s with
a resolution of 1 ms.
Time between cancelled pointers is equal to: (time between pointers
27 N) where N is selected to be the smallest integer that makes this
product
30 s.
Periodic 26–1
With Add
Sequence pattern is 26 pointer movements followed by 1 missing pointer
movement with an added pointer movement after the 13th pointer.
Time between normal pointer movements has a range of 1 s to 10 s with
a resolution of 1 ms; time between added pointer movement and
previous normal pointer movement is 2 ms.
Time between added pointers is equal to: (time between pointers
27
N) where N is selected to be the smallest integer that makes this
product
30 s.
Single
Alternating
Alternating single pointer movement. The time between pointer
movements is 30 s.
Double
Alternating
Alternating double pointer movement. The time between the double
pointer movements is 2 ms, and the time between each pair of pointer
movements is 30 s.
Table 3–14: Availability of Pointer Sequences
ie e e e
Mapping
Po
i
nt
e
r S
e
qu
e
nc
e
STS VT1.5
Single
✔ ✔
Burst
✔ ✔
Phase Transient
✔ ✔