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Wavetek ANT-20 Operating Manual

Advanced network tester
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Download this manual See also: Operating Manual
ANT-20, ANT-20E
Advanced Network Tester
M13 MUX/DEMUX
BN 3035/90.32
Drop & Insert
BN 3035/90.20
in combination with
M13 MUX/DEMUX
5
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 M13 MUX/DEMUX BN 3035/90.32 Drop & Insert BN 3035/90.20 in combination with M13 MUX/DEMUX 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 M13 MUX/DEMUX Contents Introduction Multiplex and demultiplex functions ......I-1 Testing switch and sensor functions ......I-2 In-service monitoring of tributary channels .
  • Page 4 M13 MUX/DEMUX ANT-20/ANT-20E Drop&Insert / Through Mode / Block&Replace ....S-6 Functions ........S-6 3.1.1...

  • Page 5: Introduction

    Option BN 3035/90.32 Multiplex and demultiplex functions When equipped with Option BN 3035/90.32, “M13 MUX/DEMUX”, the ANT-20 can generate and analyze DS3 signals containing 28 DS1 signals. These DS3 signals can also be mapped into OC-N signals or STM-N and STS-N signals. This allows tests on add/drop multiplexers equipped with built-in M13 multiplexs or on M13 signals.

  • Page 6: Testing Switch And Sensor Functions

    The linking of the M13 multiplex function to the SONET mapping functions in the ANT-20 makes the instrument ideal for testing complex switching functions.Tests can be performed between two SONET ports, two DSn ports or between a SONET and a DSn port.

  • Page 7: Specifications

    The DS2 level cannot be manipulated. CRC checksum (DS1 ESF) The ANT-20 calculates the CRC-6 checksum for the measured channel and the filler channels as per standard T1.107 and inserts the result bits at the appropriate position in the Extended Super Frame.

  • Page 8: Justification As Per T1.107 Or T1.107A

    M13 MUX/DEMUX ANT-20/ANT-20E Justification as per T1.107 or T1.107a The bit rates in the upper and subordinate systems are in a fixed relationship to each other. Justification is at a nominal rate (offset of upper and subordinate systems is identical).

  • Page 9: Test Signals For Bit Error Rate Measurements

    ANT-20/ANT-20E M13 MUX/DEMUX Test signals for bit error rate measurements 1.6.1 Internal test signals Bit patterns as in the mainframe instrument: • Transmitted in all timeslots (framed pattern) • Transmitted in a selected timeslot 1.6.2 External signal (with option 3035/90.20 only) An external signal with bit rate 1544 kbit/s (coaxial or balanced) can be inserted into the selected timeslot instead of the bit pattern (see Sec.

  • Page 10: Receiver Section

    M13 MUX/DEMUX ANT-20/ANT-20E Receiver section Frame systems Frames which can be evaluated by the M13 MUX/DEMUX chain (Option BN 3035/90.32): Level Bit rate in kbit/s Frames conforming to Notes 1544 T1.107 SF (D4) 1544 T1.107 ESF (T1.107) 6312 T1.107 44736 T1.107...

  • Page 11: Evaluation Of Test Signals For Bit Error Measurements

    ANT-20/ANT-20E M13 MUX/DEMUX Evaluation of test signals for bit error measurements 2.5.1 Internal evaluation Evaluation: • in all timeslots (framed pattern) • in the selected timeslot 2.5.2 External signal (with option BN 3035/90.20 only) Output of a signal with bit rate 1544 kbit/s (coaxial or balanced) for external evaluation is alternative to internal evaluation as described before (see Sec.

  • Page 12: Drop&Insert / Through Mode / Block&Replace

    Through Mode The received signal is looped through the ANT-20 and re-transmitted by the generator. The ANT-20 operates in Through Mode as a signal monitor without affecting the signal content. Fig. S-2 Through Mode: Generator and receiver coupled The looped-through signal can also be jittered using the Jitter Generator options (Jitter Generator up to 155 or 622 Mbit/s, BN 3035/90.60 to 61).

  • Page 13: Clock Generator

    ANT-20/ANT-20E M13 MUX/DEMUX Fig. S-3 Through Mode: Adding jitter to the looped-through signal Block&Replace In PDH mode not possible. 3.1.1 Clock generator Drop&Insert As specified in the “Specifications” of the mainframe instrument. Through Mode In Through Mode, clock generation is always derived from the receive signal clock.

  • Page 14: Measurements

    M13 MUX/DEMUX ANT-20/ANT-20E 3.1.4 Measurements There are no restrictions on measurements (see Sec. 2, Page S-4). Signal outputs 3.2.1 AUXILIARY signal output [11], electrical Connector ..........unbalanced, (coaxial) Socket type .

  • Page 15: Signal Inputs

    ANT-20/ANT-20E M13 MUX/DEMUX Interface Bit rate (Mbit/s) Line code Output voltage ± 3.0 V 2.048 HDB3 1.544 B8ZS DSX-1 compatible The bit rates depend on the mapping options fitted. Table S-6 Specifications of the LINE/AUXILIARY signal output [13], electrical The balanced output is used as a LINE or as an AUXILIARY output.

  • Page 16: Line/Auxiliary Signal Input [12], Electrical

    M13 MUX/DEMUX ANT-20/ANT-20E 3.3.2 LINE/AUXILIARY signal input [12], electrical Connector ............balanced Socket type .

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Ant-20e

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