Anritsu MP1777A Uživatelský manuál stáhnout pdf (Strana 11)

Enhanced Error/Alarm Simulation

The MP1570A can generate normal and abnormal frames alter-

nately to test the frame synchronization function of terminal

equipment. (This is an SDH FAS error addition function.)

Normal frame word (N) Abnormal frame word (M)

Alternative

N=1 to 15

Example of FAS error

M=0 to 15

Easily operated pointer sequence test

(combined jitter measurement)

Able to generate the justification pattern conforming to ITU-T

G.783 from the transmission equipment side, and simultane-

ously make the tributary signal offset variable. This makes the

combined jitter test possible.

MP1570A

Jitter data

1.5M

34M

45M

139M

PDH

STM-N

Pointer sequence +

payload offset

Combined jitter measurement

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 38 39

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Anritsu MP1777A Uživatelský manuál Strana 11