Tektronix CTS 850, Руководство пользователя

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Setting Jitter/Wander Parameters
CTS850 SDH/PDH Test Set User Manual
3–177
Selecting the Jitter Range
The jitter range determines the maximum measureable jitter and the
resolution of the measurement. To select the range:
Press Menu
Button Select Menu
Page Highlight
Parameter
Select Choice
RECEIVE JITTER &
WANDER Jitter Range Normal
Extended
H
Select Normal to measure jitter up to 6 UI
p-p
with a resolution of
0.005 UI (frequency dependent). Refer to RX Range Mask in
Specifictions section (in Appendix).
H
Select Extended to extend the jitter measurement range up to
200 UI
p-p
(frequency dependent) with a resolution of 0.01 UI.
Selecting the Jitter Input Filter
You can choose from three types of jitter measurement high–pass
filters defined by ITU-T standards: wideband, highband, and
fullband. The passbands for the filters, shown in Figure 3–80, are
dependent on the signal or clock rate settings; the –3 dB frequencies
are described in the Specifications located in the Appendices at the
back of this book.
The ITU–T standard that applies to jitter input filters is contained in
G.823, Table 1, Measurement Filter Bandwidth.