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4RF Aprisa XE Technical Paper

Radio clocking configuration
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Aprisa XE Technical Paper
Radio Clocking Configuration
February 2009 Version 1.2

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Summary of Contents for 4RF Aprisa XE

  • Page 1 Aprisa XE Technical Paper Radio Clocking Configuration February 2009 Version 1.2...

  • Page 2: Table Of Contents

    4.5. Branched Network - Mixed .......................... 12 4.6. Central Master Clock ........................... 13 4.7. External E1 master clock ..........................14 4.8. External HSS master clock .......................... 15 Aprisa XE Clocking Technical Paper 2 | 15 Issued by: 4RF Customer Services 13 February 2009...

  • Page 3: Radio Clocking

    Setting the Aprisa XE clocking correctly is one of the most important aspects of network configuration. Due to the versatility of the Aprisa XE it can be used in a number of different applications. This Technical Paper has been created so that these situations can be better understood and the Aprisa XE set up accordingly in your network.

  • Page 4: Clocking Setup

    To select internal as the radios clocking mode, select “Internal” from the Clock Source drop down box. Once selected, click on the “Apply” button. This will apply the clocking changes to the radio. Figure 2 : Internal Clocking Option Aprisa XE Clocking Technical Paper 4 | 15 Issued by: 4RF Customer Services 13 February 2009...

  • Page 5: Link

    To select link as the radios clocking mode, select “Link” from the Clock Source drop down box. Once selected, click on the “Apply” button. This will apply the clocking changes to the radio. Figure 3 : Link Clocking Option Aprisa XE Clocking Technical Paper 5 | 15 Issued by: 4RF Customer Services 9 December 2008...

  • Page 6: Network

    Figure 5 : Interface Summary menu Select the slot of the card which you want to make the network clock source. Click on “Configure Interfaces” button once selected. Aprisa XE Clocking Technical Paper 6 | 15 Issued by: 4RF Customer Services 15 January 2009...
  • Page 7 For HSS cards this step is not required as the HSS card only has a single port. Figure 7 : Interface port select Aprisa XE Clocking Technical Paper 7 | 15 Issued by: 4RF Customer Services 15 January 2009...

  • Page 8: Qjet Clocking Setup

    2.3.2. HSS clocking setup Figure 9 : HSS clock setting Repeat the above process to set up a secondary external clock source if needed. Aprisa XE Clocking Technical Paper 8 | 15 Issued by: 4RF Customer Services 15 January 2009...

  • Page 9: External Clock Failure

    If the nominated secondary clock source is not available, the terminal will clock from the internal clock source. When a nominated clock source becomes available (primary or secondary), the terminal will then clock from that clock source. Aprisa XE Clocking Technical Paper 9 | 15 Issued by: 4RF Customer Services 15 January 2009...

  • Page 10: Network Clocking Examples

    Unframed E1. As clocking information is carried across this E1 circuit the next radio pair can be set to Internal and its partner Link. Aprisa XE Clocking Technical Paper 10 | 15 Issued by: 4RF Customer Services 15 January 2009...

  • Page 11: Back To Back Links - Framed E1

    4 wire circuits an external audio bridge is used. As the traffic being transported is not digital, paired radios can be set to internal and link. Aprisa XE Clocking Technical Paper 11 | 15 Issued by: 4RF Customer Services 15 January 2009...

  • Page 12: Branched Network - Mixed

    Framed E1 is being carried. The radios linking between the Repeater site and Remote 2 have clocking set to Internal / Link as Framed E1 is being carried. Aprisa XE Clocking Technical Paper 12 | 15 Issued by: 4RF Customer Services 15 January 2009...

  • Page 13: Central Master Clock

    As in previous examples Framed E1 needs to have external clocking used. So each radio pair going to Remote 1 and Remote 2 have the clocking set to External and Link. Aprisa XE Clocking Technical Paper 13 | 15 Issued by: 4RF Customer Services 15 January 2009...

  • Page 14: External E1 Master Clock

    As clocking information is carried in the Unframed E1 the radios could also be set to Internal at the Local site and Link at the Remote site. Aprisa XE Clocking Technical Paper 14 | 15 Issued by: 4RF Customer Services 15 January 2009...

  • Page 15: External Hss Master Clock

    The HSS device at the remote site needs to be set to receive or external clocking (naming dependant on manufacturer). Aprisa XE Clocking Technical Paper 15 | 15 Issued by: 4RF Customer Services 15 January 2009...

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