22.0 DS1/3 Tools
The DS1/3 Tools can be found on the main menu. Tap the DS1/3 Tools icon to display the shortcut screen shown below.
E1 Jitter Measurement
E3 Jitter Measurement
DS1 Pulse Mask
DS1 Loop
Round Trip Delay
DS1 Rx Data
DS3 Pulse Mask
DS3 FEAC
DS1 VF
Jitter Measurement
22.1 DS1 Pulse Mask
This function captures and analyzes DS1 (1.544Mbits/s) pulse shape. The purpose of maintaining the correct pulse shape is to
reduce inter-symbol interference – if the logic 1s and 0s cannot be detected by the receiver correctly, bit and code errors will
result.
The pulse amplitude and overall shape are superimposed and compared with the Telcordia TR-TSY-000499 and ITU-T G.703
pulse conformance template. Telecommunications signals require specific load impedance for pulse mask compliance testing to
be accurate. When high frequency pulses are transmitted down a transmission line, a portion of the pulse will be reflected when
and wherever it encounters an impedance mismatch. The reflection is proportional to the impedance mismatch i.e. the greater the
mismatch, the greater the reflection of the pulse.
DS1 Positive Pulse Mask
DS1 Negative Pulse Mask
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