Motorola Horizon macro » History » Version 5
laforge, 02/19/2016 10:47 PM
pictures
| 1 | 1 | laforge | [[PageOutline]] |
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| 2 | 2 | laforge | = Motorola Horizon macro BTS = |
| 3 | 1 | laforge | |
| 4 | The Motorola Horizon macro BTS is a BTS model manufactured by Motorola in the late 1990ies. |
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| 5 | |||
| 6 | It can support up to 6 TRX, typically in a configuration of 3 sectors. |
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| 7 | |||
| 8 | There is currently no support for it in OpenBSC, but we are working on it. |
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| 9 | |||
| 10 | == Hardware == |
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| 11 | |||
| 12 | 3 | laforge | [[Image(horizonmacro_cabinet_door_open.jpg, 50%)]] |
| 13 | 1 | laforge | === CTU === |
| 14 | |||
| 15 | The up to 6 CTU modules are the individual transceivers. They plug into the SURF RF backplane and have a front-accessible |
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| 16 | DB9 serial port, as well as a SMA connector for the TX PA output. |
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| 17 | |||
| 18 | This TX PA output is normally wired using a ~10cm semi-rigid SMA cable to the TX input port of a combiner. |
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| 19 | |||
| 20 | === Combiner === |
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| 21 | |||
| 22 | The combiner / duplexer combines the TX signal of two CTU and duplexes it with the Rx path in order to be able to have two TRX attached to one antenna |
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| 23 | |||
| 24 | === MCUF === |
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| 25 | |||
| 26 | The MCUF is a full-size digital board and contains the BTS controller |
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| 27 | |||
| 28 | 4 | laforge | [[Image(horizonmacro_mcuf_pcb_top.jpg, 33%)]] |
| 29 | [[Image(horizonmacro_mcuf_front.jpg, 33%)]] |
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| 30 | 1 | laforge | === NIU === |
| 31 | |||
| 32 | The NIU is a E1 interface card for up to two E1 lines. Multiple NIU boards can be plugged into the rack |
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| 33 | |||
| 34 | 5 | laforge | [[Image(horizonmacro_niu_pcb.jpg, 50%)]] |
| 35 | |||
| 36 | 1 | laforge | === BPSM === |
| 37 | |||
| 38 | The BPSM is a small power supply for the NIU, MCUF and other digital boards |
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| 39 | |||
| 40 | 5 | laforge | [[Image(horizonmacro_bpsm_pcb.jpg, 50%)]] |
| 41 | |||
| 42 | === ALARMS === |
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| 43 | |||
| 44 | The ALARMS board is monitoring FAN and other alarms in the cabinet. |
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| 45 | |||
| 46 | [[Image(horizonmacro_alarms_pcb.jpg, 50%)]] |
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| 47 | 1 | laforge | === A-bis interface === |
| 48 | |||
| 49 | The A-bis interface is via classic E1 lines. The Horizon indoor cabinet supports up to 6 E1 ports. |
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| 50 | |||
| 51 | Each NIU module serves 1 or 2 E1 ports. |
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| 52 | |||
| 53 | The E1 ports are physically routed to the BIB (Balanced Interface Board) module on top of the cabinet. |
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| 54 | |||
| 55 | The pinout of the 37pin D-Sub connector on top of the BIB board has been reversed as: |
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| 56 | ||Pin ||Transformer|| |
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| 57 | ||1 ||T1.1 || |
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| 58 | ||2 ||T2.1 || |
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| 59 | ||3 ||GND || |
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| 60 | ||4 ||T4.1 || |
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| 61 | ||5 ||T5.1 || |
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| 62 | ||6 ||GND || |
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| 63 | ||7 ||T7.1 || |
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| 64 | ||8 ||T8.1 || |
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| 65 | ||9 ||GND || |
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| 66 | ||10 ||T10.1 || |
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| 67 | ||11 ||T11.1 || |
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| 68 | ||12 ||GND || |
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| 69 | ||13 ||T13.1 || |
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| 70 | ||14 ||T14.1 || |
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| 71 | ||15 ||GND || |
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| 72 | ||16 ||T16.1 || |
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| 73 | ||17 ||T17.1 || |
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| 74 | ||18 ||GND || |
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| 75 | ||19 ||GND || |
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| 76 | ||20 ||T1.8 || |
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| 77 | ||21 ||T2.8 || |
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| 78 | ||22 || || |
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| 79 | ||23 ||T4.8 || |
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| 80 | ||24 ||T5.8 || |
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| 81 | ||25 || || |
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| 82 | ||27 ||T7.8 || |
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| 83 | ||28 ||T8.8 || |
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| 84 | ||29 ||T10.8 || |
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| 85 | ||30 ||T11.8 || |
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| 86 | ||31 || || |
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| 87 | ||32 ||T13.8 || |
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| 88 | ||33 ||T14.8 || |
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| 89 | ||34 || || |
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| 90 | ||35 ||T16.8 || |
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| 91 | ||36 ||T17.8 || |
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| 92 | |||
| 93 | == Software == |
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| 94 | |||
| 95 | === MCUF === |
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| 96 | There is a 20MByte Intel Series2 Flash PCMCIA card inside the MCUF. IT contains software + configuration for the BTS. |
