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SONET_Usr.bk Page 92 Wednesday, December 13, 2000 11:11 AM
Selecting Test Features - SONET Operation
Adding Pointer Adjustments
Pointer Sequence
T1.105 A5 PERIODIC
CANCEL (Continuous
Pattern)
GR-253 5-34(d)
GR-253 5-32(d)
PERIODIC CANCEL
(26-1 pattern)
NOT E
For SPE pointers the sequence interval is selectable from 7.5 ms, 10, 20, 30, 34 ms;
40 to 100 ms in 10 ms steps, 100 to 1000 ms in 100 ms steps, 1, 2, 5, 10 seconds.
For VT pointers the sequence interval is selectable from: 200 ms, 500 ms, 1, 2, 5 and
10 seconds.
For SPE pointers the minimum spacing between adjustments is 500 us.
For VT pointers the minimum spacing between adjustments is 2 ms.
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Periodic Single adjustments, with selectable polarity and cancelled adjustment
(1 less). The time interval between pointer adjustments can be set (see Note 1).
Cancelled adjustments occur every 30 seconds or every repeat of the 87-3
pattern, whichever is longer.
This selection is only available if you have selected VT1.5 mapping. The
sequence pattern is 26 pointer movements followed by 1 missing pointer
movement. The cancelled adjustment is the 26th pointer adjustment, that is the
one before the regular gap of 1. Pointer polarity is selectable and the time
interval between pointer adjustments programmable to 200 ms, 500 ms, 1 s, 2
s, 5 s or 10s. Cancelled adjustments occur every 30 seconds or every repeat of
the 26-1 pattern, whichever is longer.
Pointer Sequences Available with Selected Mapping
POINTER SEQUENCE
A1 SINGLE
A2 BURST OF 3
A3 PHASE TRANSIENT
A4 PERIODIC NORMAL(87-3)
A4 PERIODIC NORMAL
(Continuous)
PERIODIC NORMAL (26-1)
Description
MAPPING
SPE
VT6, VT2
√
√
√
√
√
√
√
√
√
VT1.5
√
√
√
√
√
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