GL Announced Enhanced T1 E1 Jitter and Pulse Mask Measurement Solutions

21st June 2011
ES Admin
GL Communications Inc., has announced its enhanced T1 E1 Jitter and Pulse Mask Measurement Solutions. Addressing a press conference, Mr. Jagdish Vadalia Senior Manager of Product Development said, Jitter, Wander, and Frequency Drift are major impairments of clocks in synchronous systems. Jitter is the time discrepancy between the time of arrival of a clock pulse and its theoretical arrival time. Jitter arises from a number of sources, including aging of clock circuits, thermal and loading effects, Doppler shifts, and de-multiplexing from higher bit rate data streams. GL's Jitter Measurement module allows evaluation of jitter on either a tick-by-tick or a cumulative basis.
He added, “Now, the Jitter measurement can be performed through commands with the Windows Client-Server application as well. The jitter ranges can be monitored on a specified port using simple commands by a client application.”
Mr. Vadalia further added, “It is quite common for T1 E1 signals, within a central office environment or an enterprise telecom room, to NOT meet pulse mask requirements due to interference, too long or short cable lengths, improper impedances, or simply poor transmitter design. In such cases, pulse mask compliance is very useful in diagnosing problems.
GL’s tProbe™ T1/E1 Analyzer and Universal T1 E1 Cards have pulse shape measurement capability. Software has been developed to determine if the pulse shape fits within a “pulse mask” as specified by standards ITU G.703 and ANSI T1.102-1993. The software is available in both visual and tabular formats.”
“WCS Pulse Mask-The Pulse Mask Client-Server application in Universal boards is used for detection, monitoring, and plotting of transmitted pulses. Some of the commands supported are CheckPulseMask, validate pulse, stop pulse mask validation, and others. Pulse Mask will also return all error and warning message to WCS client as task error or warning message.”
Important Jitter Measurement Features
Easy, accurate, visual pulse shape and jitter measurement for T1/E1 signals (only available with Universal T1/E1 cards and tProbe™ T1/E1 analyzer)
Provides an option to select T1 or E1 port for monitoring and the frequency range of interest
Supports One-Shot capture and Repeated Capture options for jitter measurement
Jitter generation (coming soon)
Important Pulse Mask Compliance Features
Plots the pulse measured within a predefined template
Compares the incoming T1/E1 pulses against the pulse mask display
For T1 pulses, the x-axis measures time in unit intervals (UI), while for E1 pulse, the x-axis measures time in nanoseconds (ns),
The y-axis measures the normalized amplitude in volts

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