13.0 DS3 Tools
The DS3 Tools can be found on the main menu. Tap the DS3 Tools icon to display the shortcut screen shown below.
13.1 DS3 Tools > DS3 Pulse Mask
This function captures and analyzes DS3 (44.736Mbits/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.
TX150 e-Manual D07-00-023 Rev A02
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