3-88
Performance Tests
STM-1 Transmitter Output Waveshape (Options US1, [US5], A1T, [A1U],
A3R [A3S], 120)
8. Adjust the Oscilloscope controls to display the waveform as shown in Figure 3-
37, STM-1 All Zeros Pattern Example.
9. Use the Oscilloscope PRINT function to obtain a printout of the STM-1
waveform on the external printer.
10. Ensure this printout fits the STM-1 Mask of Figure 3-38.
NOTE If a mylar mask is not available, the figure shown may be traced or photocopied onto
a transparency.
Figure 3-37 STM-1 All Zeros Pattern
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