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Aprisa XE Clocking Technical Paper

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Issued by: 4RF Customer Services 15 January 2009

Using the “Clock Source” drop down box, select the clock source type, primary or secondary. Then click
on the “Apply” button to make changes.

2.3.1.

QJET clocking setup

Figure 8 : QJET port clock setting

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.

Содержание Aprisa XE

Страница 1: ...February 2009 Version 1 2 Radio Clocking Configuration Aprisa XE Technical Paper...

Страница 2: ...2 Link 5 2 3 Network 6 2 3 1 QJET clocking setup 8 2 3 2 HSS clocking setup 8 3 External Clock Failure 9 4 Network Clocking Examples 10 4 1 Single Link 10 4 2 Back to back links Unframed E1 10 4 3 Bac...

Страница 3: ...prisa 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 netwo...

Страница 4: ...13 February 2009 2 Clocking Setup 2 1 Internal 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 app...

Страница 5: ...Customer Services 9 December 2008 2 2 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 clocki...

Страница 6: ...The next step involves selecting the external interface that the radio is to clock from be it an E1 T1 or HSS port Before setting up network clocks the cross connect application must be started and a...

Страница 7: ...rvices 15 January 2009 Figure 6 Card select Select the port of the card which you want to make the network clock source Click on Edit button once selected For HSS cards this step is not required as th...

Страница 8: ...urce drop down box select the clock source type primary or secondary Then click on the Apply button to make changes 2 3 1 QJET clocking setup Figure 8 QJET port clock setting 2 3 2 HSS clocking setup...

Страница 9: ...source if that clock source is available If the nominated primary clock source is not available the terminal will clock from the nominated secondary clock source if that clock source is available If...

Страница 10: ...ternal will generate an internal clock for timing The radio set to Link will use the clock extracted from data stream passed over the RF link 4 2 Back to back links Unframed E1 Figure 11 Back to back...

Страница 11: ...ing information is not passed over a framed E1 the second radio link needs to clock from the first radio link in order to maintain synchronisation across the network The radio at the repeater site is...

Страница 12: ...n this case a mix of Framed E1 and Unframed E1 is used As in previous examples Framed E1 needs to have external clocking used Unframed E1 can have Internal clocking used The radios linking between the...

Страница 13: ...Clock The above network uses a repeater site to pass Framed E1 to two sites One radio at the repeater site is set to Internal and is the clock source for the entire network As in previous examples Fr...

Страница 14: ...the Local site will provide the clocking for the entire network The first radio clocks off the Unframed E1 coming from the Master Mux with its clocking source set to External The radio at the far end...

Страница 15: ...5 etc The Master device at the local site will provide the clocking for the entire network The first radio clocks off the HSS coming from the Master HSS device with its clocking source set to External...