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NanoBTSInternals » History » Revision 4

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tnt, 02/19/2016 10:48 PM


'''WARNING: Opening or modifying your nanoBTS will render your warranty void and might affect regulatory approval!'''

nanoBTS 1800 PCB photographs

see attachments at the end of this page.

=== 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'' 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.

nanoBTS 900

FIXME

== 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)

Updated by tnt over 8 years ago · 4 revisions

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