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Wavetek ANT-20 Operating Manual

Advanced network tester
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ANT-20, ANT-20E
Advanced Network Tester
Extended Overhead Analysis
BN 3035 /90.15
Software Version 7.20
Operating Manual

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Summary of Contents for Wavetek ANT-20

  • Page 1 ANT-20, ANT-20E Advanced Network Tester Extended Overhead Analysis BN 3035 /90.15 Software Version 7.20 Operating Manual...
  • Page 2 Please direct all enquiries to your local Wavetek Wandel Goltermann sales company. The addresses are given at the end of this handbook. Copyrights This product or parts of it are based upon Recommendations and/or Standards of the Standardization Sector of the International...

  • Page 3: Table Of Contents

    ANT-20/ANT-20E Extended Overhead Analysis Contents Introduction Functions ..........I-1 Operation Recording selected bytes (Overhead Capture) .
  • Page 4 Extended Overhead Analysis ANT-20/ANT-20E Notes:...

  • Page 5: Introduction

    Extended Overhead Analysis Introduction Functions The “Extended Overhead Analysis” option provides further useful functions for your ANT-20: • Recording of selected Section Overhead (SDH) or Transport Overhead (SONET) bytes. • Recording of selected Low or High Path Overhead (POH) bytes.
  • Page 6 Extended Overhead Analysis ANT-20/ANT-20E Notes: Introduction...

  • Page 7: Operation

    ANT-20/ANT-20E Extended Overhead Analysis Operation Recording selected bytes (Overhead Capture) Function The “Capture” function is opened from the “Overhead Analyzer” window. After the byte has been selected using the cursor, the “Capture” dialog is opened using the Capture menu command.

  • Page 8: The "Byte Capture" Dialog

    Extended Overhead Analysis ANT-20/ANT-20E The “Byte Capture” dialog Selected byte Selected structure (“Interpreter” dialog) Trigger source (see table) “Compare” and “Compare not” trigger condition Result list (byte, APS code) Control recording Export, print results Fig. O-2 “Byte Capture” dialog of the “Overhead Analyzer” window 1.2.1...

  • Page 9: Recording Results

    ANT-20/ANT-20E Extended Overhead Analysis Recording results 1.3.1 Recording K1, K2 bytes, APS channel ⇒ Click the “START” button to prepare to start the recording. The record starts as soon as the pre-set trigger condition occurs. The changes in the selected byte are recorded frame by frame with timestamp.

  • Page 10: Recording Tcm Frames

    Extended Overhead Analysis ANT-20/ANT-20E 1.3.2 Recording TCM frames ⇒ Click the “START” button to prepare for recording. Recording starts as soon as the TCM FAS word is detected. Complete TCM frames are captured and displayed. The first eight bytes, which contain the TCM FAS word, are also output.

  • Page 11: Recording Further Soh/Toh Or Poh Bytes

    ANT-20/ANT-20E Extended Overhead Analysis 1.3.3 Recording further SOH/TOH or POH bytes ⇒ Click the “START” button to prepare to start the recording. The record starts as soon as the pre-set trigger condition occurs. The changes in the selected byte are recorded frame by frame with timestamp.

  • Page 12: Measuring The Aps Switching Or Dead Time

    The switching time must meet certain criteria. The ANT-20 checks these criteria by measuring the length of time that a certain event persists (e.g. AIS or loss of test pattern) after APS is triggered. The measured time is compared with a pre-set threshold value.

  • Page 13: Setting The Switch Event

    ANT-20/ANT-20E Extended Overhead Analysis 2.2.1 Setting the switch event The event to be used to trigger switching and to be measured is set from the “Sensor” list box. • MS-AIS measures the duration of a Multiplex Section Alarm. • TSE measures the duration of loss of test pattern (PRBS).

  • Page 14: Performing An Aps Measurement

    Extended Overhead Analysis ANT-20/ANT-20E Performing an APS measurement Test setup and description Fig. O-11 APS measurement setup Interfaces • Electrical balanced Rx : [12] Tx : [13] • Electrical unbalanced Rx : [14] Tx : [15] • Optical 52, 155, 622 Mbit/s...
  • Page 15 ANT-20/ANT-20E Extended Overhead Analysis Measurement Settings 1. Click on the APS icon in the toolbar of the “Signal Structure” VI. The “APS Time Measurement” dialog opens. Fig. O-13 “APS Time Measurement” dialog 2. Select an event for triggering the switch operation from the “Sensor” list box.
  • Page 16 Extended Overhead Analysis ANT-20/ANT-20E Notes: O-10 Operation...

  • Page 17: Specifications

    Triggering ..........recording starts manually or when trigger condition occurs 1 STM-16, OC-48: ANT-20/ANT-20E Trigger events Alarms .

  • Page 18: Aps Switching Time Measurement

    Extended Overhead Analysis ANT-20/ANT-20E APS switching time measurement Sensor selection ........MS-AIS, AU-AIS, TU-AIS, TSE, AIS-L, AIS-P, AIS-V Resolution .

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Ant-20e

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