XRT75L03DIV 查看數據表（PDF） - Exar Corporation
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XRT75L03DIV Datasheet PDF : 134 Pages
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XRT75L03D
THREE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER REV. 1.0.0
FIGURE 9. TRANSMIT OUPUT PULSE TEMPLATE FOR DS3 AS PER BELLCORE GR-499
D S 3 P u ls e T e m p la te
1.2
1
0.8
0.6
Lower Curve
Upper Curve
0.4
0.2
0
-0.2
-1 -0.9 -0.8 -0.7 -0.6 -0.5 -0.4 -0.3 -0.2 -0.1
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9
Tim e, in UI
1 1.1 1.2 1.3 1.4
TABLE 6: DS3 PULSE MASK EQUATIONS
TIME IN UNIT INTERVALS
NORMALIZED AMPLITUDE
LOWER CURVE
-0.85 < T < -0.36
- 0.03
-0.36 < T < 0.36
·
0.5
1
+
sin
π2--
1
+
0----.T-1----8--
– 0.03
0.36 < T < 1.4
-0.85 < T < -0.68
-0.68 < T < 0.36
- 0.03
UPPER CURVE
0.03
·
0.5
1
+
sin
π2--
1
+
0----.T-3----4--
+ 0.03
0.36 < T < 1.4
0.08 + 0.407 x e-1.84[T-0.36]
38
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