Basic Test Procedures
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CTS850 SDH/PDH Test Set User Manual
The CTS850 applies progressively increasing jitter to the input until
the Current BER reaches the threshold you set. At that time, the test
stops automatically and the results are displayed.
Testing Clock-to-Line Jitter Transfer
This test measures the transfer function for jitter in the output of a
network element relative to jitter in its clock. The CTS850 generates
a 2 MHz G.703 clock signal containing jitter that is connected to the
network element. The CTS850 also generates a jitter-free test pattern
connected to the input of the network element. Then, the CTS850
receives the output from the network element and analyzes its
performance.
You can specify several parameters for the test:
H
Mask type for jitter analysis
H
Start frequency
H
End frequency
H
Number of frequency samples
The results are displayed in numerical and graphical form.
1. Connect the CTS850 to the network element as shown in
Figure 3–10.
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