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Newsletter: GL Announces Datacom Analyzer/Emulator

Welcome to another January 2013 issue of GL Communications' Newsletter providing information on our latest tProbe™ Datacom Analyzer/Emulator, a tool that is designed for test and verification of data communications circuits and equipment. 


GL's Datacom Analyzer/Emulator is an optional board available with GL's tProbe™ T1 E1 Analyzer or as a standalone unit. It is designed for test and verification of  data communications equipment and circuits - specifically serial interfaces that provide clock, data, and control signals. These are commonly encountered in military links, satellite circuits, WAN, and data modem interfaces. Software selectable modes are provided to emulate DTE, DCE and non-intrusive monitoring for both synchronous (sync), and asynchronous (async) modes.  Interface standards X.21, V.24, V.35, RS-449, RS-485, EIA-530 and EIA-530A are supported. Also supported are line codings such as Manchester. Various cables are provided for these interfaces to make testing convenient.

Software Applications

  • Protocol Analyzers 
    Datacom analyzer supports analyzing HDLC, Frame Relay, and PPP protocols. The HDLC protocol Analyzer is depicted below. The user can also view Frame Relay  and PPP  protocols.

  • Monitoring of Control Signals and Frequency 
    Displays the signal activity on the Datacom DCE and DTE interfaces along with the frequency measurements for each port.

  • Monitoring Multiframe
    This application permits viewing unframed data on a Datacom port. Approximately 2 seconds of data is captured for viewing.

  • Record/Playback Applications
    This application permits record/playback to/from file across DTE/DCE interfaces. The three application provided are: Playback from FileAutomated Record Playback , Automated Continuous Capture.

  • Error Insertion
    The Error Insertion application permits inserting single, fixed, automatic, random, and burst error into the incoming or outgoing bit stream.

  • Precision Delay Measurement
    Precision Delay Measurement measures the Round Trip Delay of a system. Sending a BER pattern with the insertion of an error bit and timing the reception of the error bit do the Round Trip Delay measurement. Measurement is precise and accurate to the microsecond level. 

  • Rx to Tx Loopback
    This application is used in conjunction with a Bit Error Rate Test to verify the operation of the datacom analyzer.

  • Bit Error Rate Test
    The Bit Error Rate Test (BERT) application generates/detects Pseudo Random Bit Sequences (PRBS) for testing performance of data communication circuits.

Summary of Main Features:

  • Supported Line interfaces  - V.24, V.35, X.21, RS-449, RS-485, EIA-530 and EIA-530A
  • Sync BER from 300 b/s to 16.384Mbps
  • Async BER from 300 b/s to 115.2Kbps
  • DTE or DCE emulation mode
  • SYNC clock source and sense selection
  • Frequency measurement
  • Handshaking signals control and monitoring

Typical Application:

  • Bi-directional monitoring with Y-adapter cable
  • Monitor control leads, frequency
  • DTE/DCE emulation for end-to-end testing of data networks, bi-directional monitoring for a greater level of troubleshooting for data networks
For comprehensive information on the application, please visit tProbe™  Datacom Analyzer application web page. 


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