VeEX VePAL TX300M, User Manual

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12.1 DS1 Pulse Mask
This function captures and analyzes DS1 (1.544Mbps) 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 Pulse Mask
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12.2 DS1 Loop
When in DS1 mode, users can tap the
DS1 Loop
icon on the right side of the screen to access the DS1 Loopback
TX300S_e-manual_D07-00-064P_RevA00