3-15
Performance Tests
PDH Transmitter Output (UKK, [USB], UKJ, [USA]
NOTE If your oscilloscope does not have the Mask feature, obtain a printout of the displayed
pulse. Place the mask, shown in Figure 3-6, over the pulse and ensure that the pulse
falls within the mask. (A transparent copy of the mask should be used).
Figure 3-5 8 Mb/s Pulse Mask
Figure 3-6 8 Mb/s Isolated Positive Pulse