Transmits in-band and out-of-band DS1 loop
In-band
:CSU, NIU FAC1, NIU FAC2. Transmit: Select code transmitted for 5 seconds (nominal).
ESF DFL (Out-of-band)
: Line, Payload, Network.
Transmit: Selected code transmitted either continuously or a burst of n-messages (where n is selectable in the range 1 to 15).
22.3 Round Trip Delay
The Round Trip Delay (Propagation Delay) measurement works by sending a test pattern. Errors are transmitted in the pattern.
The time it takes for the error to reach the receiver is the propagation time through the network.
View the Round Trip Delay of a looped back signal.
Set check box on Setup Rx pattern to Out-of-Service
22.4 DS1 Rx Data
Tapping the DS1 Rx Data the DS1 Tools screen shows the DS1 Rx Data, which shows received data and captures the current
timeslots.
DS1 Rx Data
22.5 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.
DS3 Positive Pulse
DS3 Negative Pulse
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Summary of Contents for VePal TX130M+
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