Difference between revisions of "OpenBTS: Kalibrasi"
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cd /usr/local/src/kal-v0.4.1/src/ | cd /usr/local/src/kal-v0.4.1/src/ | ||
| − | ./kal -s 900 -F 52000000 -b GSM900 | + | ./kal -s 900 -F 52000000 -b GSM900 -vv |
Hasil | Hasil | ||
| + | FPGA clock : 52000000 | ||
| + | Decimation : 192 | ||
| + | Sample rate: 270833.343750 | ||
kal: Scanning for GSM-900 base stations. | kal: Scanning for GSM-900 base stations. | ||
| + | channel detect threshold: 9458.928125 | ||
GSM-900: | GSM-900: | ||
| − | chan: 36 (942.2MHz + | + | chan: 36 (942.2MHz + 423Hz) power: 194131.34 |
| − | chan: 37 (942.4MHz + | + | chan: 37 (942.4MHz + 428Hz) power: 50474.90 |
| − | chan: 38 (942.6MHz + | + | chan: 38 (942.6MHz + 412Hz) power: 50189.51 |
| − | chan: 39 (942.8MHz + | + | chan: 39 (942.8MHz + 397Hz) power: 14175.00 |
| − | chan: 40 (943.0MHz + | + | chan: 40 (943.0MHz + 483Hz) power: 38742.63 |
| − | chan: 41 (943.2MHz + | + | chan: 41 (943.2MHz + 510Hz) power: 50648.68 |
| − | + | chan: 61 (947.2MHz + 503Hz) power: 73085.29 | |
| − | chan: 61 (947.2MHz + | + | chan: 62 (947.4MHz + 490Hz) power: 18121.82 |
| − | chan: 62 (947.4MHz + | + | chan: 66 (948.2MHz + 512Hz) power: 16138.32 |
| − | chan: 66 (948.2MHz + | + | chan: 68 (948.6MHz + 491Hz) power: 18167.35 |
| − | chan: 68 (948.6MHz + | + | chan: 113 (957.6MHz + 548Hz) power: 24349.49 |
| − | chan: | + | chan: 114 (957.8MHz + 493Hz) power: 11841.20 |
| − | chan: | + | chan: 115 (958.0MHz + 520Hz) power: 20344.80 |
| − | chan: 115 (958.0MHz + | + | chan: 119 (958.8MHz + 505Hz) power: 31772.62 |
| − | chan: 119 (958.8MHz + | + | chan: 120 (959.0MHz + 535Hz) power: 10510.76 |
| − | chan: 120 (959.0MHz + | + | chan: 123 (959.6MHz + 565Hz) power: 18004.66 |
| − | chan: 123 (959.6MHz + | ||
===Scanning 850=== | ===Scanning 850=== | ||
| Line 149: | Line 152: | ||
Misalnya kita menggunakan BTS pada channel 47 untuk kalibrasi | Misalnya kita menggunakan BTS pada channel 47 untuk kalibrasi | ||
| − | ./kal -c 47 | + | ./kal -F 52000000 -c 47 |
Hasil | Hasil | ||
| Line 159: | Line 162: | ||
overruns: 0 | overruns: 0 | ||
not found: 0 | not found: 0 | ||
| + | |||
| + | |||
| + | Misalnya kita menggunakan BTS pada channel 61 untuk kalibrasi | ||
| + | |||
| + | ./kal -F 52000000 -c 61 | ||
| + | |||
| + | Hasil | ||
| + | |||
| + | kal: Calculating clock frequency offset. | ||
| + | Using GSM-900 channel 61 (947.2MHz) | ||
| + | average [min, max] (range, stddev) | ||
| + | + 494Hz [481, 504] (23, 6.454695) | ||
| + | overruns: 0 | ||
| + | not found: 0 | ||
| + | |||
| + | |||
| + | ==Proses Kalibrasi== | ||
| + | |||
| + | ===Ukur=== | ||
| + | |||
| + | Gunakan Kalibrate untuk mengukur offset frekuensi, misalnya pada channel 52 | ||
| + | |||
| + | ./kal -f 945400000 | ||
| + | |||
| + | Misalnya hasilnya adalah | ||
| + | |||
| + | kal: Calculating clock frequency offset. | ||
| + | Using GSM-900 channel 52 (945.4MHz) | ||
| + | average [min, max] (range, stddev) | ||
| + | + 498Hz [429, 555] (126, 32.384548) | ||
| + | overruns: 0 | ||
| + | not found: 165 | ||
| + | |||
| + | ===Hitung Offset=== | ||
| + | |||
| + | Hitung dengan asumsi | ||
| + | |||
| + | * Frekuensi Clock 20MHz | ||
| + | * Kanal 52 atau frekuensi 945.4MHz | ||
| + | * Offset hasil pengukuran + 500Hz | ||
| + | |||
| + | Maka clock 20MHz harus di offset sebesar | ||
| + | |||
| + | -500Hz/945.4MHz*20MHz=-10.6 Hz | ||
| + | |||
| + | Tepatnya menjadi | ||
| + | |||
| + | 19,999,990 Hz | ||
| + | |||
| + | ===Set Ulang ClockTamer=== | ||
| + | |||
| + | Set ulang OSC pada ClockTamer menggunakan | ||
| + | |||
| + | sudo screen /dev/ttyACM0 115200,cs8,-ixon,-ixoff | ||
| + | |||
| + | Beberapa pilihan setting | ||
| + | |||
| + | SET,,OSC,19999991 | ||
| + | SET,,OSC,19999990 | ||
| + | SET,,OSC,19999989 | ||
| + | STE | ||
| + | |||
| + | ===Scan Ulang Frekuensi=== | ||
| + | |||
| + | Hasilnya harus lebih baik | ||
| + | |||
| + | cd /usr/local/src/kal-v0.4.1/src | ||
| + | ./kal -s 900 -F 52000000 -b GSM900 -vv | ||
| + | |||
| + | Semoga hasilnya memperoleh offset yang lebih baik, seperti | ||
| + | |||
| + | FPGA clock : 52000000 | ||
| + | Decimation : 192 | ||
| + | Sample rate: 270833.343750 | ||
| + | kal: Scanning for GSM-900 base stations. | ||
| + | channel detect threshold: 6922.106769 | ||
| + | GSM-900: | ||
| + | chan: 36 (942.2MHz - 34Hz) power: 192896.03 | ||
| + | chan: 37 (942.4MHz - 30Hz) power: 48710.69 | ||
| + | chan: 38 (942.6MHz - 13Hz) power: 31109.57 | ||
| + | chan: 64 (947.8MHz + 68Hz) power: 15319.56 | ||
| + | chan: 66 (948.2MHz + 65Hz) power: 14363.92 | ||
| + | chan: 109 (956.8MHz + 2Hz) power: 12547.61 | ||
| + | chan: 112 (957.4MHz - 88Hz) power: 10748.52 | ||
| + | chan: 113 (957.6MHz + 42Hz) power: 22609.95 | ||
| + | chan: 114 (957.8MHz + 36Hz) power: 18037.21 | ||
| + | chan: 115 (958.0MHz + 61Hz) power: 15508.45 | ||
| + | chan: 116 (958.2MHz + 80Hz) power: 10971.88 | ||
| + | chan: 119 (958.8MHz + 65Hz) power: 24555.23 | ||
| + | chan: 123 (959.6MHz + 25Hz) power: 16705.38 | ||
==Referensi== | ==Referensi== | ||
| Line 172: | Line 265: | ||
* [[OpenBTS]] | * [[OpenBTS]] | ||
| + | * [[OpenBTS: Arsitektur secara umum]] | ||
===Persiapan=== | ===Persiapan=== | ||
| Line 181: | Line 275: | ||
* [[USRP: Instalasi Board]] | * [[USRP: Instalasi Board]] | ||
* [[OpenBTS: GIT Source Code]] | * [[OpenBTS: GIT Source Code]] | ||
| + | * [[USRP: Rangkaian Board USRP]] | ||
| + | * [[OpenBTS: Tethr untuk Bencana Alam]] | ||
===OpenBTS 2.6=== | ===OpenBTS 2.6=== | ||
| Line 186: | Line 282: | ||
* [[GNURadio]] | * [[GNURadio]] | ||
* [[GNURadio: Ubuntu Install]] | * [[GNURadio: Ubuntu Install]] | ||
| − | * [[GNURadio: Ubuntu Install GNURadio 3.4.2]] '''*RECOMMENDED | + | * [[GNURadio: Menggunakan UHD]] |
| + | * [[GNURadio: Ubuntu Install GNURadio 3.4.2]] '''RECOMMENDED''' | ||
| + | * [[GNURadio: Ubuntu Install GNURadio 3.4.2 Clock 52MHz]] '''RECOMMENDED''' | ||
* [[GNURadio: Contoh Aplikasi]] | * [[GNURadio: Contoh Aplikasi]] | ||
* [[GNURadio: Spectrum Analizer GSM]] | * [[GNURadio: Spectrum Analizer GSM]] | ||
* [[GNURadio: Mengubah board RFX1800 menjadi RFX900]] | * [[GNURadio: Mengubah board RFX1800 menjadi RFX900]] | ||
* [[GNURadio: Programming Untuk Pemula]] | * [[GNURadio: Programming Untuk Pemula]] | ||
| − | * [[OpenBTS: Ubuntu Install]] | + | * [[OpenBTS: Ubuntu Install]] '''RECOMMENDED''' |
| − | * [[OpenBTS: Konfigurasi]] | + | * [[OpenBTS: Ubuntu Install OpenBTS 2.6 Clock 52MHz]] '''RECOMMENDED''' |
| + | * [[OpenBTS: Konfigurasi]] '''RECOMMENDED''' | ||
* [[OpenBTS: Kalibrasi]] | * [[OpenBTS: Kalibrasi]] | ||
| − | * [[OpenBTS: Konfigurasi Asterisk untuk OpenBTS]] | + | * [[OpenBTS: Konfigurasi Asterisk untuk OpenBTS]] '''RECOMMENDED''' |
* [[OpenBTS: Menjalankan smqueue]] | * [[OpenBTS: Menjalankan smqueue]] | ||
| − | * [[OpenBTS: Mengoperasikan BTS]] | + | * [[OpenBTS: Mengoperasikan BTS]] '''RECOMMENDED''' |
* [[OpenBTS: Tampilan di Nokia saat pakai OpenBTS]] | * [[OpenBTS: Tampilan di Nokia saat pakai OpenBTS]] | ||
* [[OpenBTS: Operasi 1800 MHz]] | * [[OpenBTS: Operasi 1800 MHz]] | ||
| Line 207: | Line 306: | ||
===OpenBTS 2.8=== | ===OpenBTS 2.8=== | ||
| − | * [[GNURadio: Ubuntu 11.10 Install]] '' | + | * [[GNURadio: Ubuntu 11.10 Install]] ''NOT RECOMMENED'' |
| − | * [[GNURadio: Ubuntu 11.10 instalasi menggunakan Repo]] | + | * [[GNURadio: Ubuntu 11.10 instalasi menggunakan Repo]] ''NOT RECOMMENDED'' |
| + | * [[GNURadio: Download GNURadio]] | ||
| + | * [[GNURadio: Install UHD]] | ||
* [[GNURadio: Ubuntu 11.10 Instal GNURadio 3.3.0]] | * [[GNURadio: Ubuntu 11.10 Instal GNURadio 3.3.0]] | ||
| − | * [[GNURadio: Ubuntu 11.10 Instal GNURadio 3.4.2]] | + | * [[GNURadio: Ubuntu 11.10 Instal GNURadio 3.4.2]] '''RECOMMENDED''' |
| − | * [[GNURadio: Ubuntu 11.10 Install dari GIT GNURadio]] | + | * [[GNURadio: Ubuntu 12.04 Instal GNURadio 3.4.2]] '''RECOMMENDED''' |
| + | * [[GNURadio: Ubuntu 11.10 Instal GNURadio 3.5.0]] ''NOT RECOMMENDED'' | ||
| + | * [[GNURadio: Ubuntu 11.10 Instal GNURadio 3.5.3.2]] ''NOT RECOMMENDED'' | ||
| + | * [[GNURadio: Ubuntu 11.10 Instal GNURadio 3.6.0]] ''NOT RECOMMENDED'' | ||
| + | * [[GNURadio: Ubuntu 11.10 Install dari GIT GNURadio]] ''NOT RECOMMENDED'' | ||
* [[GNURadio: Ubuntu 11.10 cek USRP Daughter Board]] | * [[GNURadio: Ubuntu 11.10 cek USRP Daughter Board]] | ||
| + | * [[GNURadio: UHD]] ''NOT RECOMMENDED'' | ||
| + | * [[GNURadio: UHD Image]] ''NOT RECOMMENDED'' | ||
| + | * [[GNURadio: UHD burn EEPROM RFX Board di USRP1]] ''NOT RECOMMENDED'' | ||
| + | * [[GNURadio: UHD Identifikasi Device]] | ||
* [[OpenBTS: Ubuntu 11.10 Install]] | * [[OpenBTS: Ubuntu 11.10 Install]] | ||
| − | * [[OpenBTS: 2.8 dari SVN Install]] '''RECOMMENDED''' | + | * [[OpenBTS: dari GIT ttsou]] |
| − | * [[OpenBTS: 2.8 Instalasi Real Time Asterisk]] | + | * [[OpenBTS: 2.8 dari SVN Install]] |
| + | * [[OpenBTS: 2.8 dari SVN Install Clock 52MHz]] '''RECOMMENDED''' | ||
| + | * [[OpenBTS: 2.8 dari SVN Install Clock 52MHz dengan UHD tanpa GNURadio]] ''NOT RECOMMENDED'' | ||
| + | * [[OpenBTS: 2.8 Edit User di sqlite3.db]] '''RECOMMEND''' | ||
| + | * [[OpenBTS: Yate Softswitch]] '''RECOMMENDED''' | ||
| + | * [[OpenBTS: Yate Config Test]] | ||
| + | * [[OpenBTS: 2.8 Instalasi Real Time Asterisk]] '''RECOMMENDED''' | ||
| + | * [[OpenBTS: 2.8 Menjalankan]] '''RECOMMENDED''' | ||
* [[OpenBTS: 2.8 Konfigurasi]] | * [[OpenBTS: 2.8 Konfigurasi]] | ||
| + | * [[OpenBTS: 2.8 Konfigurasi Subscriber Registery]] | ||
* [[OpenBTS: Database SQLite]] | * [[OpenBTS: Database SQLite]] | ||
| + | |||
| + | ===Multi OpenBTS 2.8=== | ||
| + | |||
| + | * [[OpenBTS: Pola Multi OpenBTS]] '''RECOMMENDED''' | ||
| + | * [[Multi OpenBTS: Catatan Konfigurasi]] '''RECOMMENDED''' | ||
===Ettus E110=== | ===Ettus E110=== | ||
* [[OpenBTS: E110 Cara Login]] | * [[OpenBTS: E110 Cara Login]] | ||
| − | * [[OpenBTS: E110 Install Image di MicroSD]] | + | * [[OpenBTS: E110 Install Image di MicroSD]] '''*RECOMMENDED*''' |
* [[OpenBTS: E110 Cek Daughter Board]] | * [[OpenBTS: E110 Cek Daughter Board]] | ||
* [[OpenBTS: E110 Mengubah Master Clock]] | * [[OpenBTS: E110 Mengubah Master Clock]] | ||
| Line 228: | Line 350: | ||
* [[OpenBTS: E110 Bekerja dengan opkg]] | * [[OpenBTS: E110 Bekerja dengan opkg]] | ||
* [[OpenBTS: E110 GNURadio]] | * [[OpenBTS: E110 GNURadio]] | ||
| − | * [[OpenBTS: E110 Install UHD Image]] | + | * [[OpenBTS: E110 Compile UHD]] '''*RECOMMENDED*''' |
| + | * [[OpenBTS: E110 UHD burn EEPROM RFX Board]] '''*RECOMMENDED*''' | ||
| + | * [[OpenBTS: E110 Install UHD Image]] '''*RECOMMENDED*''' | ||
* [[OpenBTS: E110 Instalasi OpenBTS]] | * [[OpenBTS: E110 Instalasi OpenBTS]] | ||
| − | * [[OpenBTS: E110 Instalasi OpenBTS 2.6]] '''* | + | * [[OpenBTS: E110 Instalasi OpenBTS 2.6]] ''NOT RECOMMENDED'' |
| + | * [[OpenBTS: E110 Instalasi OpenBTS 2.8 untuk MultiBTS]] '''*RECOMMENDED*''' | ||
| + | |||
| + | ===GPRS=== | ||
| + | |||
| + | * [[OpenBTS: GPRS]] | ||
| + | |||
| + | ===Power Amplifier=== | ||
| + | |||
| + | * [[Driver 900MHz]] | ||
| + | * [[Power Amplifier 900MHz]] | ||
| + | * [[Duplexer]] | ||
===Lain Lain=== | ===Lain Lain=== | ||
| Line 252: | Line 387: | ||
* [[Siapa Bilang OpenBTS Ilegal?]] | * [[Siapa Bilang OpenBTS Ilegal?]] | ||
* [[OpenBTS: Catatan MNC dan MCC Indonesia]] | * [[OpenBTS: Catatan MNC dan MCC Indonesia]] | ||
| + | * [[OpenBTS: Catatan MNC dan MCC COOL]] | ||
* [[OpenBTS : Alokasi Frekuensi Operator GSM Indonesia]] | * [[OpenBTS : Alokasi Frekuensi Operator GSM Indonesia]] | ||
| + | * [[GSM: Daftar Channel Frekuensi]] | ||
===Catatan Sejarah=== | ===Catatan Sejarah=== | ||
| Line 259: | Line 396: | ||
* [[OpenBTS: Daftar Workshop atau Seminar yang pernah dilakukan]] | * [[OpenBTS: Daftar Workshop atau Seminar yang pernah dilakukan]] | ||
* [[OpenBTS: Daftar Artikel di Media]] | * [[OpenBTS: Daftar Artikel di Media]] | ||
| + | |||
| + | ===Dokumentasi Video=== | ||
| + | |||
| + | * http://youtu.be/8ogOcUSpINU (1/6) | ||
| + | * http://youtu.be/F5d7HGuhppk (2/6) | ||
| + | * http://youtu.be/90Jgq6bOgrQ (3/6) | ||
| + | * http://youtu.be/cNkx_qNqdfc (4/6) | ||
| + | * http://youtu.be/6LCuoeI57ak (5/6) | ||
| + | * http://youtu.be/-dEqcHoIlYk (6/6) | ||
[[Category: Wireless]] | [[Category: Wireless]] | ||
[[Category: Selular]] | [[Category: Selular]] | ||
Latest revision as of 07:23, 14 August 2012
Sumber: http://gnuradio.org/redmine/wiki/1/OpenBTSClockCalibration
Jika kita tidak mempunyai peralatan lab yang baik dan kita ingin mengetahui akurasi clock USRP, kita dapat menggunakan aplikasi Kalibrator (Copyright (c) 2009 Joshua Lackey, Alexander Chemeris). Tentunya kita tidak mungkin memperoleh hasil yang baik seperti hi-tech lab, tapi cukup lah untuk mengetahui error kalibrasi clock yang ada.
Download
Download dari
http://thre.at/kalibrate/kal-v0.4.1.tar.bz2 git clone https://github.com/ttsou/kalibrate-uhd kalibrate-uhd
Compile
cp kal-v0.4.1.tar.bz2 /usr/local/src/ cd /usr/local/src tar jxvf kal-v0.4.1.tar.bz2 cd /usr/local/src/kal-v0.4.1 ./bootstrap && CXXFLAGS='-W -Wall -O3' ./configure && make
Menjalankan
cd /usr/local/src/kal-v0.4.1/src/ ./kal -h
Hasil
kalibrate v0.4.1, Copyright (c) 2010, Joshua Lackey Usage: GSM Base Station Scan: kal <-s band indicator> [options] Clock Offset Calculation: kal <-f frequency | -c channel> [options] Where options are: -s band to scan (GSM850, GSM900, EGSM, DCS, PCS) -f frequency of nearby GSM base station -c channel of nearby GSM base station -b band indicator (GSM850, GSM900, EGSM, DCS, PCS) -R side A (0) or B (1), defaults to B -A antenna TX/RX (0) or RX2 (1), defaults to RX2 -g gain as % of range, defaults to 45% -F FPGA master clock frequency, defaults to 52MHz -v verbose -D enable debug messages -h help
Scanning 1800
Menjalankan
cd /usr/local/src/kal-v0.4.1/src/ ./kal -s 1800 -F 64000000 -b DCS
Hasil
kal: Scanning for DCS-1800 base stations. DCS-1800: chan: 513 (1805.4MHz + 14.952kHz) power: 5336.89 chan: 514 (1805.6MHz + 14.954kHz) power: 1927.35 chan: 517 (1806.2MHz + 14.952kHz) power: 3715.71 chan: 518 (1806.4MHz + 14.983kHz) power: 1717.65 chan: 519 (1806.6MHz + 14.969kHz) power: 5159.38 chan: 520 (1806.8MHz + 14.951kHz) power: 2017.03 chan: 542 (1811.2MHz + 15.092kHz) power: 4554.77 chan: 544 (1811.6MHz + 15.084kHz) power: 3730.97 chan: 569 (1816.6MHz + 15.181kHz) power: 6196.37 chan: 570 (1816.8MHz + 15.172kHz) power: 1924.81 chan: 613 (1825.4MHz + 15.237kHz) power: 15746.19 chan: 614 (1825.6MHz + 15.242kHz) power: 6683.53 chan: 616 (1826.0MHz + 15.260kHz) power: 12953.63 chan: 617 (1826.2MHz + 15.248kHz) power: 4816.39 chan: 620 (1826.8MHz + 15.224kHz) power: 4274.58 chan: 625 (1827.8MHz + 15.268kHz) power: 3613.13 chan: 626 (1828.0MHz + 15.313kHz) power: 1926.56 chan: 627 (1828.2MHz + 15.274kHz) power: 3536.15 chan: 628 (1828.4MHz + 15.267kHz) power: 2346.39 chan: 629 (1828.6MHz + 15.288kHz) power: 7923.44 chan: 632 (1829.2MHz + 15.316kHz) power: 5417.85 chan: 633 (1829.4MHz + 15.312kHz) power: 2652.96 chan: 689 (1840.6MHz + 15.602kHz) power: 3734.25 chan: 692 (1841.2MHz + 15.587kHz) power: 11674.51 chan: 693 (1841.4MHz + 15.586kHz) power: 5294.69
Scanning 900
Untuk Clock 64MHz Menjalankan
cd /usr/local/src/kal-v0.4.1/src/ ./kal -s 900 -F 64000000 -b GSM900
Untuk Clock 52MHz Menjalankan
cd /usr/local/src/kal-v0.4.1/src/ ./kal -s 900 -F 52000000 -b GSM900 -vv
Hasil
FPGA clock : 52000000 Decimation : 192 Sample rate: 270833.343750 kal: Scanning for GSM-900 base stations. channel detect threshold: 9458.928125 GSM-900: chan: 36 (942.2MHz + 423Hz) power: 194131.34 chan: 37 (942.4MHz + 428Hz) power: 50474.90 chan: 38 (942.6MHz + 412Hz) power: 50189.51 chan: 39 (942.8MHz + 397Hz) power: 14175.00 chan: 40 (943.0MHz + 483Hz) power: 38742.63 chan: 41 (943.2MHz + 510Hz) power: 50648.68 chan: 61 (947.2MHz + 503Hz) power: 73085.29 chan: 62 (947.4MHz + 490Hz) power: 18121.82 chan: 66 (948.2MHz + 512Hz) power: 16138.32 chan: 68 (948.6MHz + 491Hz) power: 18167.35 chan: 113 (957.6MHz + 548Hz) power: 24349.49 chan: 114 (957.8MHz + 493Hz) power: 11841.20 chan: 115 (958.0MHz + 520Hz) power: 20344.80 chan: 119 (958.8MHz + 505Hz) power: 31772.62 chan: 120 (959.0MHz + 535Hz) power: 10510.76 chan: 123 (959.6MHz + 565Hz) power: 18004.66
Scanning 850
Menjalankan
cd /usr/local/src/kal-v0.4.1/src/ ./kal -s 850 -F 64000000
Hasil
Scanning Channel
Menjalankan
cd /usr/local/src/kal-v0.4.1/src/ ./kal -c 513 -F 64000000 -b DCS
Hasil
kal: Calculating clock frequency offset. Using DCS-1800 channel 513 (1805.4MHz) average [min, max] (range, stddev) + 17.109kHz [17087, 17136] (50, 14.080007) overruns: 0 not found: 0
Kalkulasi Kalibrasi
Misalnya kita menggunakan BTS pada channel 47 untuk kalibrasi
./kal -F 52000000 -c 47
Hasil
kal: Calculating clock frequency offset. Using GSM-900 channel 47 (944.4MHz) average [min, max] (range, stddev) + 501Hz [479, 524] (45, 13.227342) overruns: 0 not found: 0
Misalnya kita menggunakan BTS pada channel 61 untuk kalibrasi
./kal -F 52000000 -c 61
Hasil
kal: Calculating clock frequency offset. Using GSM-900 channel 61 (947.2MHz) average [min, max] (range, stddev) + 494Hz [481, 504] (23, 6.454695) overruns: 0 not found: 0
Proses Kalibrasi
Ukur
Gunakan Kalibrate untuk mengukur offset frekuensi, misalnya pada channel 52
./kal -f 945400000
Misalnya hasilnya adalah
kal: Calculating clock frequency offset. Using GSM-900 channel 52 (945.4MHz) average [min, max] (range, stddev) + 498Hz [429, 555] (126, 32.384548) overruns: 0 not found: 165
Hitung Offset
Hitung dengan asumsi
- Frekuensi Clock 20MHz
- Kanal 52 atau frekuensi 945.4MHz
- Offset hasil pengukuran + 500Hz
Maka clock 20MHz harus di offset sebesar
-500Hz/945.4MHz*20MHz=-10.6 Hz
Tepatnya menjadi
19,999,990 Hz
Set Ulang ClockTamer
Set ulang OSC pada ClockTamer menggunakan
sudo screen /dev/ttyACM0 115200,cs8,-ixon,-ixoff
Beberapa pilihan setting
SET,,OSC,19999991 SET,,OSC,19999990 SET,,OSC,19999989 STE
Scan Ulang Frekuensi
Hasilnya harus lebih baik
cd /usr/local/src/kal-v0.4.1/src ./kal -s 900 -F 52000000 -b GSM900 -vv
Semoga hasilnya memperoleh offset yang lebih baik, seperti
FPGA clock : 52000000 Decimation : 192 Sample rate: 270833.343750 kal: Scanning for GSM-900 base stations. channel detect threshold: 6922.106769 GSM-900: chan: 36 (942.2MHz - 34Hz) power: 192896.03 chan: 37 (942.4MHz - 30Hz) power: 48710.69 chan: 38 (942.6MHz - 13Hz) power: 31109.57 chan: 64 (947.8MHz + 68Hz) power: 15319.56 chan: 66 (948.2MHz + 65Hz) power: 14363.92 chan: 109 (956.8MHz + 2Hz) power: 12547.61 chan: 112 (957.4MHz - 88Hz) power: 10748.52 chan: 113 (957.6MHz + 42Hz) power: 22609.95 chan: 114 (957.8MHz + 36Hz) power: 18037.21 chan: 115 (958.0MHz + 61Hz) power: 15508.45 chan: 116 (958.2MHz + 80Hz) power: 10971.88 chan: 119 (958.8MHz + 65Hz) power: 24555.23 chan: 123 (959.6MHz + 25Hz) power: 16705.38
Referensi
- http://gnuradio.org/redmine/wiki/1/OpenBTSClockCalibration
- http://sourceforge.net/mailarchive/attachment.php?list_name=openbts-discuss&message_id=3d032e5d0911101431o5bb31844mdfe80ae4fc9789ea@mail.gmail.com&counter=1
- http://thre.at/kalibrate/
- http://thre.at/kalibrate/#install
- http://ttsou.github.com/kalibrate-uhd/
- https://github.com/ttsou/kalibrate-uhd
Pranala Menarik
Persiapan
- USRP: High Precision Clock
- USRP: Menyambungkan ClockTamer ke USRP1
- USRP: Kalibrasi ClockTamer
- USRP: ClockTamer Control Protocol
- USRP: Instalasi Board
- OpenBTS: GIT Source Code
- USRP: Rangkaian Board USRP
- OpenBTS: Tethr untuk Bencana Alam
OpenBTS 2.6
- GNURadio
- GNURadio: Ubuntu Install
- GNURadio: Menggunakan UHD
- GNURadio: Ubuntu Install GNURadio 3.4.2 RECOMMENDED
- GNURadio: Ubuntu Install GNURadio 3.4.2 Clock 52MHz RECOMMENDED
- GNURadio: Contoh Aplikasi
- GNURadio: Spectrum Analizer GSM
- GNURadio: Mengubah board RFX1800 menjadi RFX900
- GNURadio: Programming Untuk Pemula
- OpenBTS: Ubuntu Install RECOMMENDED
- OpenBTS: Ubuntu Install OpenBTS 2.6 Clock 52MHz RECOMMENDED
- OpenBTS: Konfigurasi RECOMMENDED
- OpenBTS: Kalibrasi
- OpenBTS: Konfigurasi Asterisk untuk OpenBTS RECOMMENDED
- OpenBTS: Menjalankan smqueue
- OpenBTS: Mengoperasikan BTS RECOMMENDED
- OpenBTS: Tampilan di Nokia saat pakai OpenBTS
- OpenBTS: Operasi 1800 MHz
- OpenBTS: Beberapa Tips
- OpenBTS: USRP2
- OpenBTS: Amplifier
- OpenBTS: SMS
- AirProbe
OpenBTS 2.8
- GNURadio: Ubuntu 11.10 Install NOT RECOMMENED
- GNURadio: Ubuntu 11.10 instalasi menggunakan Repo NOT RECOMMENDED
- GNURadio: Download GNURadio
- GNURadio: Install UHD
- GNURadio: Ubuntu 11.10 Instal GNURadio 3.3.0
- GNURadio: Ubuntu 11.10 Instal GNURadio 3.4.2 RECOMMENDED
- GNURadio: Ubuntu 12.04 Instal GNURadio 3.4.2 RECOMMENDED
- GNURadio: Ubuntu 11.10 Instal GNURadio 3.5.0 NOT RECOMMENDED
- GNURadio: Ubuntu 11.10 Instal GNURadio 3.5.3.2 NOT RECOMMENDED
- GNURadio: Ubuntu 11.10 Instal GNURadio 3.6.0 NOT RECOMMENDED
- GNURadio: Ubuntu 11.10 Install dari GIT GNURadio NOT RECOMMENDED
- GNURadio: Ubuntu 11.10 cek USRP Daughter Board
- GNURadio: UHD NOT RECOMMENDED
- GNURadio: UHD Image NOT RECOMMENDED
- GNURadio: UHD burn EEPROM RFX Board di USRP1 NOT RECOMMENDED
- GNURadio: UHD Identifikasi Device
- OpenBTS: Ubuntu 11.10 Install
- OpenBTS: dari GIT ttsou
- OpenBTS: 2.8 dari SVN Install
- OpenBTS: 2.8 dari SVN Install Clock 52MHz RECOMMENDED
- OpenBTS: 2.8 dari SVN Install Clock 52MHz dengan UHD tanpa GNURadio NOT RECOMMENDED
- OpenBTS: 2.8 Edit User di sqlite3.db RECOMMEND
- OpenBTS: Yate Softswitch RECOMMENDED
- OpenBTS: Yate Config Test
- OpenBTS: 2.8 Instalasi Real Time Asterisk RECOMMENDED
- OpenBTS: 2.8 Menjalankan RECOMMENDED
- OpenBTS: 2.8 Konfigurasi
- OpenBTS: 2.8 Konfigurasi Subscriber Registery
- OpenBTS: Database SQLite
Multi OpenBTS 2.8
- OpenBTS: Pola Multi OpenBTS RECOMMENDED
- Multi OpenBTS: Catatan Konfigurasi RECOMMENDED
Ettus E110
- OpenBTS: E110 Cara Login
- OpenBTS: E110 Install Image di MicroSD *RECOMMENDED*
- OpenBTS: E110 Cek Daughter Board
- OpenBTS: E110 Mengubah Master Clock
- OpenBTS: E110 Kalibrasi Clock
- OpenBTS: E110 Bekerja dengan opkg
- OpenBTS: E110 GNURadio
- OpenBTS: E110 Compile UHD *RECOMMENDED*
- OpenBTS: E110 UHD burn EEPROM RFX Board *RECOMMENDED*
- OpenBTS: E110 Install UHD Image *RECOMMENDED*
- OpenBTS: E110 Instalasi OpenBTS
- OpenBTS: E110 Instalasi OpenBTS 2.6 NOT RECOMMENDED
- OpenBTS: E110 Instalasi OpenBTS 2.8 untuk MultiBTS *RECOMMENDED*
GPRS
Power Amplifier
Lain Lain
- OpenBTS: Materi Magang di ICTWATCH
- OpenBTS: Seminar Outline
- OpenBTS: Workshop Outline
- Membuat Base Station GSM Open Source
- Teknologi Selular
- GSM: Daftar Channel Frekuensi
- Wireless Internet
- OpenBSC
- AirProbe
- Base station subsystem
- GSM
- Asterisk
- Mobile phone
Catatan Legal dan Pendukung
- Siapa Bilang OpenBTS Ilegal?
- OpenBTS: Catatan MNC dan MCC Indonesia
- OpenBTS: Catatan MNC dan MCC COOL
- OpenBTS : Alokasi Frekuensi Operator GSM Indonesia
- GSM: Daftar Channel Frekuensi
Catatan Sejarah
- 2011/04/30 - Workshop OpenBTS Pertama di Indonesia dilakukan di Univ Gajah Putih Takengon Aceh Tengah
- OpenBTS: Daftar Workshop atau Seminar yang pernah dilakukan
- OpenBTS: Daftar Artikel di Media
Dokumentasi Video
- http://youtu.be/8ogOcUSpINU (1/6)
- http://youtu.be/F5d7HGuhppk (2/6)
- http://youtu.be/90Jgq6bOgrQ (3/6)
- http://youtu.be/cNkx_qNqdfc (4/6)
- http://youtu.be/6LCuoeI57ak (5/6)
- http://youtu.be/-dEqcHoIlYk (6/6)