Siemens GSM-R Cab Radio » History » Version 19
laforge, 01/23/2023 09:05 PM
| 1 | 3 | laforge | {{>toc}} |
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| 2 | 1 | laforge | |
| 3 | 3 | laforge | h1. Siemens GSM-R CAB Radio |
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| 5 | Osmocom has been provided with two ancient Siemens GSM CAB Radio devices, i.e. the kind of MS installed fixed into a train engine. |
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| 7 | {{thumbnail(20230123_184656.jpg)}} |
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| 8 | {{thumbnail(20230123_184637.jpg)}} |
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| 11 | h2. Sub-Rack Hardware |
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| 13 | {{thumbnail(20230123_184513.jpg)}} |
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| 16 | h3. Backplane |
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| 18 | At the back of the sub-rack there's a custom back-plane to interconnect the various modules |
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| 20 | {{thumbnail(20230123_183101.jpg)}} |
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| 21 | {{thumbnail(20230123_182917.jpg)}} |
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| 23 | h3. High Voltage Power Supply Module |
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| 24 | |||
| 25 | This is a fully encapsulated, passive cooled, DC/DC converter with |
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| 26 | * Input voltage 65..150V |
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| 27 | * Two output voltage rails of 12V / 4A |
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| 29 | 4 | laforge | {{thumbnail(20230123_183623.jpg)}} |
| 30 | 3 | laforge | |
| 31 | 4 | laforge | |
| 32 | 3 | laforge | h3. 12V -> 5V DC/DC converter Module |
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| 34 | This is a circuit board that generates a 5V rail from 12V |
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| 36 | 4 | laforge | {{thumbnail(20230123_183545.jpg)}} |
| 37 | {{thumbnail(20230123_183508.jpg)}} |
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| 38 | 3 | laforge | |
| 39 | h3. GSM Modem Module |
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| 41 | This is a module implementing the actual GSM-R modem. It consts of two circuit boards: One digital and one analog/RF. |
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| 43 | 4 | laforge | {{thumbnail(20230123_184407.jpg)}} |
| 44 | {{thumbnail(20230123_184419.jpg)}} |
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| 45 | {{thumbnail(20230123_184432.jpg)}} |
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| 46 | {{thumbnail(20230123_184452.jpg)}} |
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| 48 | 3 | laforge | h4. Digital Board |
| 49 | 1 | laforge | |
| 50 | 5 | laforge | {{thumbnail(20230123_184241.jpg)}} |
| 51 | {{thumbnail(20230123_184021.jpg)}} |
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| 52 | {{thumbnail(20230123_184031.jpg)}} |
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| 53 | {{thumbnail(20230123_184051.jpg)}} |
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| 54 | {{thumbnail(20230123_184105.jpg)}} |
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| 55 | 3 | laforge | |
| 56 | h4. RF Board |
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| 57 | |||
| 58 | 6 | laforge | {{thumbnail(20230123_184153.jpg)}} |
| 59 | {{thumbnail(20230123_184143.jpg)}} |
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| 60 | {{thumbnail(20230123_184116.jpg)}} |
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| 61 | {{thumbnail(20230123_184003.jpg)}} |
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| 62 | {{thumbnail(20230123_183952.jpg)}} |
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| 63 | {{thumbnail(20230123_183940.jpg)}} |
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| 65 | 3 | laforge | h3. PC/104 embedded PC Module |
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| 67 | 1 | laforge | This is a carrier board hosting a PC/104 embedded x86 Mainboard. |
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| 69 | 7 | laforge | {{thumbnail(20230123_183800.jpg)}} |
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| 71 | 1 | laforge | h4. Carrier |
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| 73 | 7 | laforge | {{thumbnail(20230123_183641.jpg)}} |
| 74 | {{thumbnail(20230123_183815.jpg)}} |
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| 75 | |||
| 76 | 19 | laforge | We can see this carrier interfacing with |
| 77 | * the 8-bit lower portion of the ISA bus on the PC/104 connector |
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| 78 | * both of the UARTS of the SBC |
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| 81 | 1 | laforge | h4. PC/104 x86 SBC |
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| 83 | 7 | laforge | {{thumbnail(20230123_183714.jpg)}} |
| 84 | {{thumbnail(20230123_183728.jpg)}} |
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| 85 | {{thumbnail(20230123_183747.jpg)}} |
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| 86 | 3 | laforge | |
| 87 | h3. I/O board |
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| 88 | |||
| 89 | This is a board that brings signals from the backplane and frontplane and brings them to connectors towards the main connector panel. |
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| 90 | |||
| 91 | 8 | laforge | {{thumbnail(20230123_183235.jpg)}} |
| 92 | {{thumbnail(20230123_183213.jpg)}} |
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| 93 | {{thumbnail(20230123_183139.jpg)}} |
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| 94 | {{thumbnail(20230123_183123.jpg)}} |
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| 95 | 13 | laforge | {{thumbnail(20230123_183252.jpg)}} |
| 96 | {{thumbnail(20230123_161713.jpg)}} |
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| 97 | {{thumbnail(20230123_161719.jpg)}} |
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| 98 | 8 | laforge | |
| 99 | 18 | laforge | We can see a number of SRDA05-6 TVS diode arrays as ESD protection measure, as well as some Datatronic LM201-1 signal transformers. |
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| 101 | 9 | laforge | h3. Audio PA + Relay board |
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| 103 | This board appears to contain an audio Power Amplifier |
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| 104 | |||
| 105 | {{thumbnail(20230123_183434.jpg)}} |
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| 106 | {{thumbnail(20230123_183356.jpg)}} |
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| 107 | {{thumbnail(20230123_183327.jpg)}} |
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| 108 | {{thumbnail(20230123_183316.jpg)}} |
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| 109 | {{thumbnail(20230123_183303.jpg)}} |
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| 110 | 3 | laforge | |
| 111 | 10 | laforge | |
| 112 | h3. Frontplane |
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| 113 | |||
| 114 | There's a board on the front side of the unit which interconnects the I/O board and the Relay / Audio PA board. |
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| 115 | |||
| 116 | {{thumbnail(20230123_183451.jpg)}} |
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| 117 | {{thumbnail(20230123_161142.jpg)}} |
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| 119 | 3 | laforge | h2. Handset Hardware |
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| 121 | 15 | laforge | The specific handset unit here was used for demo purposes ourside an actual train cab. So the auto-radio-looking user interface unit plus the receiver were mounted together with a 230V AC -> 110V DC power supply in an enclosure that you can connect to the subrack via two cables. |
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| 123 | 14 | laforge | {{thumbnail(20230123_211512.jpg)}} |
| 124 | {{thumbnail(20230123_211445.jpg)}} |
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| 125 | {{thumbnail(20230123_211422.jpg)}} |
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| 126 | {{thumbnail(20230123_211413.jpg)}} |
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| 127 | {{thumbnail(20230123_211433.jpg)}} |
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| 128 | 15 | laforge | {{thumbnail(20230123_211501.jpg)}} |
| 129 | 14 | laforge | |
| 130 | 1 | laforge | h3. Internal Pictures |
| 131 | |||
| 132 | 14 | laforge | {{thumbnail(20230123_210832.jpg)}} |
| 133 | 15 | laforge | {{thumbnail(20230123_211353.jpg)}} |
| 134 | {{thumbnail(20230123_211321.jpg)}} |
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| 135 | {{thumbnail(20230123_211306.jpg)}} |
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| 136 | 3 | laforge | |
| 137 | 1 | laforge | h2. Connector pinout |
| 138 | 2 | laforge | |
| 139 | 12 | laforge | !20230123_184637.jpg! |
| 140 | |||
| 141 | 2 | laforge | h3. EXT RADIO (DB-15 female) |
| 142 | |||
| 143 | h3. SER I/O (DB-25 male) |
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| 144 | |||
| 145 | h3. HMI 1 (DB-25 female) |
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| 146 | |||
| 147 | 16 | laforge | This is the connector used to interconnect with the User Interface unit. HMI most likely means _Human Machine Interface_. |
| 148 | |||
| 149 | 2 | laforge | h3. HMI 2 (DB-25 female) |
| 150 | |||
| 151 | h3. MVB OUT (DB-9 female) |
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| 152 | |||
| 153 | 17 | laforge | This is internally wired 1:1 with the MVB IN connector. It likely contains an interface to the _Multifunction Vehicle Bus_ of the train. |
| 154 | |||
| 155 | See https://en.wikipedia.org/wiki/Train_communication_network for details on MVB. |
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| 156 | |||
| 157 | 2 | laforge | h3. MVB IN (DB-9 female) |
| 158 | |||
| 159 | h3. ANT (N) |
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| 160 | |||
| 161 | This a standdard 50-ohms N-type conector to connect to the GSM-R antenna. |
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| 163 | 1 | laforge | h3. PMU (DB-9 male) |
| 164 | 2 | laforge | |
| 165 | 3 | laforge | This connector is forwarded internally to the DB-9 connector on the front of the embedded PC. Probably serial console. |
| 166 | 2 | laforge | |
| 167 | h3. TRAIN POWER AND I/O (circular connector) |
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| 168 | 1 | laforge | |
| 169 | |_.Pin (ext)|_.Internal Connector|_.Internal Connector Pin|_.Wire color|_.Purpose| |
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| 170 | |H|PL6|1|rose|| |
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| 171 | |K|PL6|2|white|| |
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| 172 | |M|PL6|3|green|| |
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| 173 | |P|PL6|4|purple|| |
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| 174 | |S|PL6|5|blue|| |
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| 175 | |J|PL6|6|black|| |
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| 176 | |L|PL6|7|red|| |
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| 177 | |N|PL6|8|yellow|| |
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| 178 | |R|PL6|9|orange|| |
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| 179 | |B|PL6|10|green|| |
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| 180 | |T|PL7|1|white|| |
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| 181 | |d|PL7|2|green|| |
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| 182 | |F|PL7|4|blue|| |
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| 183 | |A|PL7|5|red|| |
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| 184 | |U|PL7|6|rose|| |
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| 185 | |e|PL7|7|blue|| |
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| 186 | |G|PL7|9|grey|| |
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| 187 | |C|PL7|10|yellow|| |
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| 188 | |V|PL8|1|white|| |
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| 189 | |D|PL8|3|purple|| |
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| 190 | |W|PL8|4|red|| |
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| 191 | |E|PL8|6|orange|| |
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| 192 | |c|PL9|1|orange|| |
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| 193 | |Z|PL9|2|rose|| |
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| 194 | |X|PL9|3|green|| |
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| 195 | |b|PL9|4|grey|| |
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| 196 | |a|PL9|5|red|| |
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| 197 | |Y|PL9|6|yellow|| |
