NanoBTSInternals » History » Revision 9
Revision 8 (ahuemer, 02/19/2016 10:48 PM) → Revision 9/12 (ahuemer, 02/19/2016 10:48 PM)
*WARNING: '''WARNING: Opening or modifying your nanoBTS will render your warranty void and might affect regulatory approval! * h2. ''' == nanoBTS 1800 h2. == == PCB photographs == see attachments at the end of this page. h3. === Debug Port === There is a serial port for debugging. This port can be accessed via one of the two TIB RJ45 jacks, but only after a small hardware modification has been made. Please reference the following picture for details. After soldering those two connections, the pin-out of _TIB out_ ''TIB out'' is as follows: * Pin 7: PPC UART Tx (3.3V) * Pin 8: PPC UART Rx (3.3V) * Pin 10: Ground You can use any level shifter to get the signal up to true RS323 values, or directly connect something like a FT232. The port runs at 115200 bps, 8N1 There seems to be some kind of serial console on the device, we haven't yet figured out more details. h2. == nanoBTS 900 == FIXME h2. == nanoBTS 139 (1800 1st gen I guess) == see attachments for hi-res. [[Image(nanobts_139_top_small.jpg)]] [[Image(nanobts_139_bot_small.jpg)]] [[Image(nanobts_139_digital_small.jpg)]] h2. == nanoBTS 110A PCS 1900MHz == nanoBTS 110A PCS 1900MHz with 4 blown capacitors @ power supply [[Image(nanobts_110a_1900_front_blown_caps_small.jpg)]] nanoBTS 110A PCS 1900MHz after capacitor replacement [[Image(nanobts_110a_1900_front_replaced_caps_small.jpg)]] nanoBTS 110A PCS 1900MHz back [[Image(nanobts_110a_1900_back_small.jpg)]] nanoBTS 110A PCS 1900MHz back, detail view of area with through-hole components on PCB [[Image(nanobts_110a_1900_back_detail_small.jpg)]]
