Agilent Technologies OmniBER 718 SDH User Manual page 90

Selecting Test Features
Adding Pointer Adjustments
Pointer
Type
AU
AU
TU
TU
G.783 - Provides pointer movements according to ITU-T G.783:
Choose the G.783 ADJUSTMENT TYPE.
Choose the POLARITY, INTERVAL and PATTERN (where applicable) for the
selected sequence.
Choose POINTER SEQUENCES
sequence and
G.783 Pointer Sequences Explained
In addition to the BURST, NEW POINTER and OFFSET pointer movements
described, the OmniBER 718 can also generate pointer sequences (pointer
movements) according to ITU-T G.783, T1.105.03 and GR-253. Note that T.105.03/
GR-253 sequences are explained in the SONET version of this User's Guide.
Before running a pointer sequence you can elect to run an initialization sequence,
followed by a cool down period, and then run the chosen sequence. This is selected
using the
pointer sequences are made up of three periods: the Initialization Period, the Cool
Down Period, and the Sequence (Measurement) Period, illustrated in the following
figure:
Non Periodic Sequence
Periodic Sequence
Note: SINGLE (e), BURST (f) and PHASE TRANSIENT are Non Periodic
Sequences.
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AU Payload (VC)
Line Rate Rate
Constant
Offset Constant
Constant Constant
Offset Tracks Line Rate
START INIT
to stop the pointer sequences.
STOP INIT
key shown in the display on the previous page. Initialized
START INIT
Initialization Sequence
Initialization
TU Payload (TU)
Rate
Offset Tracks AU Payload
Constant
Offset
Constant
to generate the selected G.783
Sequence
No Pointer Activity
Continuous Sequence
Cool Down Measurement
Period
Time
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