NanoBTSInternals » History » Version 8
ahuemer, 02/19/2016 10:48 PM
pictures of nanoBTS 110A PCS1900 added
| 1 | 6 | laforge | '''WARNING: Opening or modifying your nanoBTS will render your warranty void and might affect regulatory approval! ''' |
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| 2 | 1 | laforge | |
| 3 | 2 | laforge | == nanoBTS 1800 == |
| 4 | |||
| 5 | 1 | laforge | == PCB photographs == |
| 6 | |||
| 7 | 2 | laforge | see attachments at the end of this page. |
| 8 | 1 | laforge | |
| 9 | 2 | laforge | === Debug Port === |
| 10 | 1 | laforge | |
| 11 | There is a serial port for debugging. This port can be accessed via one of the two TIB RJ45 jacks, but only after |
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| 12 | a small hardware modification has been made. Please reference the following picture for details. |
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| 13 | |||
| 14 | After soldering those two connections, the pin-out of ''TIB out'' is as follows: |
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| 15 | |||
| 16 | * Pin 7: PPC UART Tx (3.3V) |
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| 17 | 3 | laforge | * Pin 8: PPC UART Rx (3.3V) |
| 18 | 1 | laforge | * Pin 10: Ground |
| 19 | |||
| 20 | You can use any level shifter to get the signal up to true RS323 values, or directly connect something like a FT232. |
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| 21 | |||
| 22 | 2 | laforge | The port runs at 115200 bps, 8N1 |
| 23 | |||
| 24 | 1 | laforge | There seems to be some kind of serial console on the device, we haven't yet figured out more details. |
| 25 | |||
| 26 | 2 | laforge | == nanoBTS 900 == |
| 27 | 1 | laforge | |
| 28 | FIXME |
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| 29 | 4 | tnt | |
| 30 | 5 | laforge | == nanoBTS 139 (1800 1st gen I guess) == |
| 31 | 4 | tnt | |
| 32 | see attachments for hi-res. |
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| 33 | |||
| 34 | [[Image(nanobts_139_top_small.jpg)]] |
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| 35 | [[Image(nanobts_139_bot_small.jpg)]] |
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| 36 | [[Image(nanobts_139_digital_small.jpg)]] |
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| 37 | 8 | ahuemer | |
| 38 | == nanoBTS 110A PCS 1900MHz == |
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| 39 | |||
| 40 | nanoBTS 110A PCS 1900MHz with 4 blown capacitors @ power supply |
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| 41 | |||
| 42 | [[Image(nanobts_110a_1900_front_blown_caps_small.jpg)]] |
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| 43 | |||
| 44 | nanoBTS 110A PCS 1900MHz after capacitor replacement |
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| 45 | |||
| 46 | [[Image(nanobts_110a_1900_front_replaced_caps_small.jpg)]] |
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| 47 | |||
| 48 | nanoBTS 110A PCS 1900MHz back |
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| 49 | |||
| 50 | [[Image(nanobts_110a_1900_back_small.jpg)]] |
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| 51 | |||
| 52 | nanoBTS 110A PCS 1900MHz back, detail view of area with through-hole components on PCB |
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| 53 | |||
| 54 | [[Image(nanobts_110a_1900_back_detail_small.jpg)]] |
