E4/STM-1/OC-3 ATM TRANSCEIVER
Figure 7. Mask of a pulse corresponding to a binary 0 Compliant to G.703
S3031B
T=
7.18 ns for E4
6.43 ns for 155 CMI
Figure 8. Mask of a pulse corresponding to a binary 1 Compliant to G.703
t=
1.35 ns for E4
1.20 ns for 155 CMI
T=
7.18 ns for E4
6.43 ns for 155 CMI
Notes:
1. The maximum “steady state” amplitude should not exceed the 0.55V limit. Overshoots and other transients are permitted to
fall into the dotted area, bounded by the amplitude levels 0.55V and 0.6V, provided that they do not exceed the steady state
level by more than 0.05V. The possibility of relaxing the amount by which the overshoot may exceed the steady state level
is under study.
2. For the purpose of these masks, the rise time and decay time should be measured between -0.4V and 0.4V, and should not
exceed 2 ns.
3. The inverse pulse in Figure 8 will have the same characteristics, noting that the timing tolerances at the zero level of the
negative and positive transitions are
±0.1
ns and
±0.5
ns respectively.
August 19, 1999 / Revision D
5
AMCC [ APPLIED MICRO CIRCUITS CORPORATION ]
