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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)

Files (18)
nanobts1800-front.jpg View nanobts1800-front.jpg 529 KB laforge, 06/26/2009 07:17 PM
nanobts1800-back.jpg View nanobts1800-back.jpg 541 KB laforge, 06/26/2009 07:18 PM
nanobts1800-baseband.jpg View nanobts1800-baseband.jpg 594 KB laforge, 06/26/2009 07:18 PM
nanobts1800-debug_port.jpg View nanobts1800-debug_port.jpg 222 KB laforge, 06/26/2009 07:18 PM
nanobts_139_top_big.jpg View nanobts_139_top_big.jpg 444 KB nanoBTS 139 - PCB top [big] tnt, 09/30/2009 09:04 PM
nanobts_139_top_small.jpg View nanobts_139_top_small.jpg 100 KB nanoBTS 139 - PCB top [small] tnt, 09/30/2009 09:05 PM
nanobts_139_bot_big.jpg View nanobts_139_bot_big.jpg 383 KB nanoBTS 139 - PCB bottom [big] tnt, 09/30/2009 09:06 PM
nanobts_139_bot_small.jpg View nanobts_139_bot_small.jpg 88.6 KB nanoBTS 139 - PCB bottom [small] tnt, 09/30/2009 09:06 PM
nanobts_139_digital_big.jpg View nanobts_139_digital_big.jpg 1.02 MB nanoBTS 139 - PCB closeup and digital baseband [big] tnt, 09/30/2009 09:11 PM
nanobts_139_digital_small.jpg View nanobts_139_digital_small.jpg 101 KB nanoBTS 139 - PCB closeup and digital baseband [small] tnt, 09/30/2009 09:11 PM
nanobts_110a_1900_back_big.jpg View nanobts_110a_1900_back_big.jpg 2.77 MB nanoBTS 110A 1900 - PCB back [big] ahuemer, 11/29/2011 09:09 PM
nanobts_110a_1900_back_detail_big.jpg View nanobts_110a_1900_back_detail_big.jpg 3.86 MB nanoBTS 110A 1900 - PCB back detail [big] ahuemer, 11/29/2011 09:11 PM
nanobts_110a_1900_back_detail_small.jpg View nanobts_110a_1900_back_detail_small.jpg 227 KB nanoBTS 110A 1900 - PCB back detail [small] ahuemer, 11/29/2011 09:11 PM
nanobts_110a_1900_back_small.jpg View nanobts_110a_1900_back_small.jpg 206 KB nanoBTS 110A 1900 - PCB back [small] ahuemer, 11/29/2011 09:12 PM
nanobts_110a_1900_front_blown_caps_big.jpg View nanobts_110a_1900_front_blown_caps_big.jpg 2.52 MB nanoBTS 110A 1900 - PCB front - blown caps [big] ahuemer, 11/29/2011 09:13 PM
nanobts_110a_1900_front_blown_caps_small.jpg View nanobts_110a_1900_front_blown_caps_small.jpg 204 KB nanoBTS 110A 1900 - PCB front - blown caps [small] ahuemer, 11/29/2011 09:14 PM
nanobts_110a_1900_front_replaced_caps_big.jpg View nanobts_110a_1900_front_replaced_caps_big.jpg 3.13 MB nanoBTS 110A 1900 - PCB front - replaced caps [big] ahuemer, 11/29/2011 09:16 PM
nanobts_110a_1900_front_replaced_caps_small.jpg View nanobts_110a_1900_front_replaced_caps_small.jpg 211 KB nanoBTS 110A 1900 - PCB front - replaced caps [small] ahuemer, 11/29/2011 09:16 PM

Updated by tnt about 8 years ago · 4 revisions

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