NanoBTSInternals » History » Version 9
ahuemer, 02/19/2016 10:48 PM
pictures of nanoBTS 110A PCS1900 added
| 1 | 9 | ahuemer | *WARNING: Opening or modifying your nanoBTS will render your warranty void and might affect regulatory approval! * |
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| 2 | 1 | laforge | |
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| 4 | 9 | ahuemer | h2. nanoBTS 1800 |
| 5 | 1 | laforge | |
| 6 | 9 | ahuemer | |
| 7 | |||
| 8 | h2. PCB photographs |
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| 9 | |||
| 10 | |||
| 11 | 1 | laforge | see attachments at the end of this page. |
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| 14 | 9 | ahuemer | h3. Debug Port |
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| 17 | 1 | laforge | There is a serial port for debugging. This port can be accessed via one of the two TIB RJ45 jacks, but only after |
| 18 | a small hardware modification has been made. Please reference the following picture for details. |
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| 19 | |||
| 20 | 9 | ahuemer | After soldering those two connections, the pin-out of _TIB out_ is as follows: |
| 21 | 1 | laforge | |
| 22 | 9 | ahuemer | * Pin 7: PPC UART Tx (3.3V) |
| 23 | * Pin 8: PPC UART Rx (3.3V) |
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| 24 | * Pin 10: Ground |
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| 25 | 1 | laforge | |
| 26 | 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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| 27 | |||
| 28 | 2 | laforge | The port runs at 115200 bps, 8N1 |
| 29 | 1 | laforge | |
| 30 | There seems to be some kind of serial console on the device, we haven't yet figured out more details. |
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| 32 | |||
| 33 | 9 | ahuemer | h2. nanoBTS 900 |
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| 35 | |||
| 36 | 1 | laforge | FIXME |
| 37 | |||
| 38 | |||
| 39 | 9 | ahuemer | h2. nanoBTS 139 (1800 1st gen I guess) |
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| 41 | |||
| 42 | 4 | tnt | see attachments for hi-res. |
| 43 | |||
| 44 | [[Image(nanobts_139_top_small.jpg)]] |
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| 45 | [[Image(nanobts_139_bot_small.jpg)]] |
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| 46 | [[Image(nanobts_139_digital_small.jpg)]] |
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| 47 | |||
| 48 | 9 | ahuemer | |
| 49 | h2. nanoBTS 110A PCS 1900MHz |
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| 50 | |||
| 51 | 8 | ahuemer | |
| 52 | nanoBTS 110A PCS 1900MHz with 4 blown capacitors @ power supply |
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| 53 | |||
| 54 | [[Image(nanobts_110a_1900_front_blown_caps_small.jpg)]] |
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| 55 | |||
| 56 | nanoBTS 110A PCS 1900MHz after capacitor replacement |
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| 57 | |||
| 58 | [[Image(nanobts_110a_1900_front_replaced_caps_small.jpg)]] |
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| 59 | |||
| 60 | nanoBTS 110A PCS 1900MHz back |
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| 61 | |||
| 62 | [[Image(nanobts_110a_1900_back_small.jpg)]] |
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| 63 | |||
| 64 | nanoBTS 110A PCS 1900MHz back, detail view of area with through-hole components on PCB |
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| 65 | |||
| 66 | 1 | laforge | [[Image(nanobts_110a_1900_back_detail_small.jpg)]] |
