NanoBTSInternals » History » Version 11
laforge, 02/21/2016 10:41 AM
| 1 | 10 | 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 | |||
| 4 | 9 | ahuemer | h2. nanoBTS 1800 |
| 5 | 1 | laforge | |
| 6 | 9 | ahuemer | |
| 7 | h2. PCB photographs |
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| 8 | |||
| 9 | 11 | laforge | {{thumbnail(nanobts1800-front.jpg)}} |
| 10 | {{thumbnail(nanobts1800-back.jpg)}} |
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| 11 | {{thumbnail(nanobts1800-baseband.jpg)}} |
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| 12 | 1 | laforge | |
| 13 | |||
| 14 | 9 | ahuemer | h3. Debug Port |
| 15 | |||
| 16 | |||
| 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 | 11 | laforge | |
| 20 | !{width=33%}nanobts1800-debug_port.jpg! |
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| 21 | 1 | laforge | |
| 22 | 9 | ahuemer | After soldering those two connections, the pin-out of _TIB out_ is as follows: |
| 23 | 1 | laforge | |
| 24 | 9 | ahuemer | * Pin 7: PPC UART Tx (3.3V) |
| 25 | * Pin 8: PPC UART Rx (3.3V) |
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| 26 | * Pin 10: Ground |
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| 27 | 1 | laforge | |
| 28 | 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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| 29 | |||
| 30 | 2 | laforge | The port runs at 115200 bps, 8N1 |
| 31 | 1 | laforge | |
| 32 | There seems to be some kind of serial console on the device, we haven't yet figured out more details. |
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| 33 | |||
| 34 | |||
| 35 | 9 | ahuemer | h2. nanoBTS 900 |
| 36 | |||
| 37 | |||
| 38 | 1 | laforge | FIXME |
| 39 | |||
| 40 | |||
| 41 | 9 | ahuemer | h2. nanoBTS 139 (1800 1st gen I guess) |
| 42 | |||
| 43 | |||
| 44 | 1 | laforge | see attachments for hi-res. |
| 45 | 4 | tnt | |
| 46 | 10 | laforge | !nanobts_139_top_small.jpg! |
| 47 | !nanobts_139_bot_small.jpg! |
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| 48 | !nanobts_139_digital_small.jpg! |
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| 49 | 4 | tnt | |
| 50 | 9 | ahuemer | |
| 51 | 1 | laforge | h2. nanoBTS 110A PCS 1900MHz |
| 52 | 9 | ahuemer | |
| 53 | 8 | ahuemer | |
| 54 | 1 | laforge | nanoBTS 110A PCS 1900MHz with 4 blown capacitors @ power supply |
| 55 | 8 | ahuemer | |
| 56 | 10 | laforge | !nanobts_110a_1900_front_blown_caps_small.jpg! |
| 57 | 1 | laforge | |
| 58 | 8 | ahuemer | nanoBTS 110A PCS 1900MHz after capacitor replacement |
| 59 | |||
| 60 | 10 | laforge | !nanobts_110a_1900_front_replaced_caps_small.jpg! |
| 61 | 8 | ahuemer | |
| 62 | nanoBTS 110A PCS 1900MHz back |
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| 63 | |||
| 64 | 10 | laforge | !nanobts_110a_1900_back_small.jpg! |
| 65 | 8 | ahuemer | |
| 66 | nanoBTS 110A PCS 1900MHz back, detail view of area with through-hole components on PCB |
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| 67 | |||
| 68 | 10 | laforge | !nanobts_110a_1900_back_detail_small.jpg! |
