Saung Mang Ebe

Kings of Convenience - Misread

2012-10-12T08:03:00.004+07:00

Title : Misread
Artist : Kings of Convenience
Album : Riot On an Empty Street

If you wanna be my friend
You want us to get along
Please do not expect me to
Wrap it up and keep it there
The observation I am doing could
Easily be understood
As cynical demeanour
But one of us misread...
And what do you know
It happened again

A friend is not a means
You utilize to get somewhere
Somehow I didn't notice
friendship is an end
What do you know
It happened again

How come no-one told me
All throughout history
The loneliest people
Were the ones who always spoke the truth
The ones who made a difference
By withstanding the indifference
I guess it's up to me now
Should I take that risk or just smile?

What do you know
It happened again
What do you know

Steve Oliver - I Know

2012-06-06T10:21:00.000+07:00

Title: I Know
Artist: Steve Oliver
Album: First View

It's been a long... long time
since I've seen your face
right before my eyes.
I could never forget it; it is so clear,
I know nothing could hide it.

Because you're one in a million,
two makes a billion,
everyone can see what you've done to me.
Because I want to be near you,
so I could hear you,
all those sweet things you say.

Because I know
what I am feeling.
Do you feel the same way too?
Because you and me,
we make a perfect example
for this world to see.

Please come talk to me.
I want to know everything about you,
what's inside your heart?
I would do the same for you,
there's no reason to hide.

Selamat pagi Jakarta

2012-01-26T11:04:00.000+07:00

Bagaimana Jakarta pagi ini?
Seperti biasa, begitu keluar rumah jalan (naik mobil maksudnya) sekitar 2 KM, langsung menemui hal yang sudah sangat tidak aneh (baca:biasa) di kota metropolitan ini yaitu banyaknya kendaraan yang memadati jalan raya (baca: macet).Dua kata yang ada dalam pikiran saya ketika melihat hal tersebut, 'enjoy Jakarta'. Sekitar 1.5 jam waktu yang diperlukan untuk menempuh jarak sejauh 11 KM dari rumah ke kantor. Kalau dipikir-pikir, di sini memang tempat yang cocok untuk menghabiskan waktu, bayangkan saja hari 11 KM, 1.5jam, berarti kecepatan rata-rata kendaraan kurang dari 10KM/jam. Ini sih namanya sudah parah tingkat akut.
Bagaimana dengan anda? Bagaimana perjalanan anda pagi ini?

Sunda Mekar

2011-11-16T08:40:00.001+07:00

judul: sunda mekar
cipt: ???

cacandran para luluhur
ciri bumi dayeuh pancatengah
ciri dayeuh pancatengah

lemah duhurna, lebak lengkobna
lemah padatarannana
nagara mukti wibawa
perlambangna congkrang kujang papasangan
yasana para dewata
teu sulaya dinyatana

pasundan tanahna subur
gemah ripah ma`mur loh jinawi
gemah ripah loh jinawi

gunung gunungna, cur cor caina
makplak pasawahanana
cukul sugri pangebonnan
karaharjan mencar mawur kajauhna
nagri nanjung panjang punjung
murah sandang murah pangan

sunda surup kana tangtung
sunda sieup ngimbang kana wanda
sieup ngimbang kana wanda

adeg adegna, budi basana
teu narakeun wawanenna
someah narima semah
matak betah anu ngadon bubuara
tara ebreh pangartina
teu nembongkeun kabisana

Aperto PacketWave SU Troubleshooting Flowchart

2010-11-24T15:16:00.000+07:00

Check Point Error 90

2010-11-15T10:19:00.000+07:00

The check point error 90 will be monitored in the BSU event logs, If the Syslog server is configured in the BSU and in the SU and If the events logs are not able to send the syslog server, then this type of Check point errors will appears in the BSU event logs.

“ Chkpt error 90 error can’t sent to Syslog Server”

Radio Control Error

2010-11-15T10:16:00.001+07:00

From BSU fault log it is observed that "Radio control error". This issue can be any one of the followings:

1. Cable between IDU and ODU

2. Bad Radio

3. IDU port

Check the followings:

1. Verify RG-6 cable and Control is OK.

2. Connect a tested ODU with the IDU ports and see if Radio is detected or operational.

3. If possible, connect these ODUs to tested IDU (PW760 or PW1000) and see if Radio is detected or operational.

Checkpoint Error 150

2010-11-15T10:12:00.001+07:00

1. Cable issue between WSS and Radio

2. DC Voltage approx 10-18 Volt at Radio from WSS port.

3. Internal communication between MSS- WSS.

4. Traffic on BS Ethernet port and each WSS ports at the time of error occurred

Checkpoint Error 43

2010-11-15T10:11:00.000+07:00

If the frame started out of sync, the most likely cause of this error would be an issue with the frame sync cable (BNC connector fail - not proper crimped, short-circuit or cable break itself) then it’s indicates message Checkpoint 43 (ChkPt 43). Or if the BSU got rebooted the message can be monitored from EMS or Syslog server.

Checkpoint Error 89

2010-11-15T10:09:00.001+07:00

This is caused by drifting of the synthesizers, and detectors re-correcting for this. No need for alarm if an isolated occurrence and the synthesizer come back into lock. If the synthesizer2 stays out of lock, it means that the radio is very likely transmitting out of the configured channel and the software will shut down WMAC so as not to cause interference.

Check Point Error 98

2010-11-15T10:08:00.000+07:00

This checkpoint will be seen when the WMAC has issued an error interrupt. This typically indicates some sort of hardware error. In the field, we have typically seen the following conditions trigger this error:

1. Excessively high bit error rate that the ASIC chip cannot tolerate.

2. A condition on the clock signal board that causes a register to left – shift a sequence number. (This is in the PHY – MAC interface for received data).

BSU sector rebooting due to TxFree Buffer count

2010-11-15T10:06:00.000+07:00

This problem could occur itself under one or more of the following conditions:

· Very heavy downstream traffic.

· severe radio conditions

· Excessive re-transmissions (ARQ).

· TxFree Buffer count is zero.

The TxFree Buffer is utilized whenever the WSS transmits packets. When the TxFree Buffer Count reaches zero, the watchdog task gives one warning and initiates the reboot process of the specific WSS if the buffer count is still zero at the next iteration.

BSU sector rebooting due to race condition between the service grant and the Constellation, Symbol Rate and FEC Adaptation (CSRF) change

2010-11-15T10:04:00.000+07:00

A race condition between the service grant and the CSRF change causes checkpoint 94 on the WSS causing it to reboot. This problem could manifest itself when a sector successfully grants service to a specific SID and immediately after that CSRF change request comes for the CPE to which the above SID is associated with and sector tries to deny BW request for the same SID.

Check Point Error 94

2010-11-15T09:58:00.000+07:00

This checkpoint indicates that the WMAC scheduler encountered an unexpected condition during the processing CIR service flows. This will result in a reset of the WMAC subsystem.

Aperto Packetwave Burst Error Rate (BER)

2010-09-13T11:26:00.001+07:00

Burst error rate, BER, is cumulative ratio of burst errors (uncorrectable FEC errors + No Unique Word errors) to total number of received bursts in percentage format.

BER Includes:

- Uncorrectable FEC

Uncorrectable FEC (forward error correction) is a condition where valid burst was received and demodulated; however, there were more errors in the burst than could be corrected by the FEC.

High number of uncorrectable FEC caused by:

o low SNR (link is too long),

o multipath fading

o Interference

- No Unique Word

No Unique Word Count indicates that some energy was detected (above the minimum power threshold) during a scheduled time slot, however no Unique Word was detected.

The Unique Word is an identifier that is part of the preamble of every wireless burst and must be valid in order for a burst to be properly demodulated.

No UW on the BSU caused by interference or collisions during contention requests, and it will degrade the sector performance.

No UW on the SU caused by Interference or radio too close to base (signal should be less than –45dBm), resulting in overdriving of the SU radio.

- No Energy errors

No energy error is when scheduled packet did not arrive, or arrived with very low power level (below the minimum energy level threshold).

On the BSU: error count increases for each frame that does not have contention traffic. This is a normal condition.

On the SU: Numerous NO ENERGY errors usually indicate a VERY low signal level. SU should be pointed again

BSU in a good condition have an errors < 1-2%. BSU with errors < 5 % is still accepted.

Higher number may caused by problems such as interference and can degrade performance.

What should we do if we found that BER counter more than 5%?

Reset the BSU radio status counter.
Step up the Rx power of the BSU (up to -60 dBm).
Scan the frequency using the FSA tools that belong to the BSU.
Switch the frequency.
Replace the pigtail cable
Decrease channel width

89 – Code:1 Task SUSP tWCx

2010-09-13T11:22:00.000+07:00

The “89 – Code:1 Task SUSP tWCx” is a minor error code and will not affect the system’s performance. This error code refers to a delay in execution of a task; however, once the delay or a single instance is triggered, the error code is reported continuously, regardless of whether the condition is there or not.

This error code is not related the SU’s / BSU’s ability to communicate with one another.

To stop the continuing reporting of this error, you can either schedule a reboot of the BSU by using telnet services or console the BSU.

Interference of Waves

2010-09-13T11:18:00.001+07:00

As most commonly used, the term interference usually refers to the interaction of waves which are correlated or coherent with each other, either because they come from the same source or because they have the same or nearly the same frequency.
Wave interference is the phenomenon which occurs when two waves meet while traveling along the same medium. The interference of waves causes the medium to take on a shape which results from the net effect of the two individual waves upon the particles of the medium.

Consider two waves that are in phase,with amplitudes A

1

and A

2

. Their troughs and peaks line up and the resultant wave will have amplitude A

=

1 +

2

. This is known as constructive interference — a type of interference which occurs at any location along the medium where the two interfering waves have a displacement in the same direction.

If the two waves are pi radians, or 180°, out of phase, then one wave’s crests will coincide with another wave’s troughs and so will tend to cancel out. The resultant amplitude is A

= |

1 -

2 |

. If A

1 =

2

, the resultant amplitude will be zero. This is known as destructive interference — a type of interference which occurs at any location along the medium where the two interfering waves have a displacement in the opposite direction.

When two sinusoidal waves superimpose, the resulting waveform depends on the frequency (or wavelength) amplitude and relative phase of the two waves. If the two waves have the same amplitude A and wavelength the resultant waveform will have an amplitude between 0 and

2

A depending on whether the two waves are in phase or out of phase.
The task of determining the shape of the resultant demands that the principle of superposition is applied. The principle of superposition is sometimes stated as follows: When two waves interfere, the resulting displacement of the medium at any location is the algebraic sum of the displacements of the individual waves at that same location.

Aperto Packetwave Subscriber Unit (SU) Issues

2010-09-13T11:08:00.000+07:00

SU Synchronization Issues

Incorrect Frequency
Incorrect Channel Width
Incorrect BSU ID
BSU wireless port is not operational
SU Indoor Unit failed to detect the Outdoor Unit
SU antenna is not pointed correctly
The SU is out of range from the BSU and is not able to receive any signal from the BSU

SU DHCP Issues

The DHCP Server may not have the correct reservation for the SU
The DHCP Server may be not operational
The SU DHCP Server entry on the BSU may not be configured correctly
If multiple subnets are configured within the wireless port serving the SU, the DHCP Super-scope should be defined properly

SU Configuration File Issues

The TFTP Server IP address specified in the DHCP response may be invalid
The default gateway specified in the DHCP response may be incorrect
Missing route on the TFTP Server
TFTP server application is not running
The SU may have established a two way link on the wrong sector
Bad wireless link (Upstream)
Even after a successful download of the configuration file, the SU might reject the file due to version incompatibility

SU Registration Problems

The SU configuration file specifies Service Flows for which the BSU does not have any reserved bandwidth
If the SU configuration file specifies a larger number of classifiers
Registration would also fail if the number of service flows configured for the SU did not match with the service flows configure for the WSS
If the number of SUs registering exceeds the number of supported SUs configure in the BSU

RF Signal Quality – No Energy Count (No Energy Error)

2010-09-13T11:06:00.000+07:00

No energy error counters when scheduled packet did not arrive, or arrived with very low power level (below the minimum energy level threshold).

@ BSU: error count increases for each frame that does not have contention traffic. NORMAL

@ SU: Numerous NO ENERGY errors usually indicate a VERY low signal level. SU should be pointed again.

Troubleshooting should be performed via Web GUI

SOP Penggantian Base Station Radio (BSR) Aperto Packetwave

2010-09-13T11:03:00.000+07:00

1. Siapkan BSR pengganti yang telah dipastikan bagus (QC Passed), beserta alat dan komponen pendukung lainnya. Yakni:

- Rubber tape

- Coax seal

- Silicon glue

- Obeng kembang ( + )

- Cutter

- Tang pemotong

- Konektor RJ-45 dan RG-6 (jika dibutuhkan)

- Crimping RJ-45 dan RG-6 (jika dibutuhkan)

2. Browse BSU yang akan diganti BSRnya.

3. Kupas semua pelindung konektor kabel yang melekat di BSR

4. Pada menu webGUI BSU, matikan WSS port yang akan diganti BSRnya dengan cara: klik Utility \ Device Controll \ Turn On/Off WSS

5. Cabut kabel RG-6 yang terhubung ke BSU, diikuti dengan mencabut kabel STP

6. Cabut semua kabel yang terhubung ke BSR

7. Ganti BSR lama dengan BSR yang baru

8. Pasangkan kembali semua kabel ke BSR

9. Pasangkan kabel RG-6, diikuti kabel STP ke BSU

10. Nyalakan port BSU yang terhubung ke BSR yang terkait via webGUI dengan cara: Utility \ Device Controll \ Turn On/Off WSS

11. Pastikan BSR terpasang dalam kondisi Operational; cek pada menu Status \ BSU Radio Status \ Port Status = Operational with Radio

12. Berikan lapisan pelindung (rubber tape > coax seal > rubber tape > silicon glue) untuk semua konektor yang terhubung ke BSR.

13. Selesai.

SOP Pengecekan BS Aperto Packetwave

2010-09-13T10:59:00.000+07:00

1. Buka web browser

2. Masukan IP BSU yang akan dicek

3. Masuk ke menu Status \ BSU System Status

4. Pastikan BSU State dalam kondisi Operational

5. Pada menu Status \ BSU Ethernet Status, pastikan Link Status: Link Up

6. Masuk ke menu Status \ BSU Radio Status, pastikan:

- Port Status : Operational with Radio

- Synth Lock Status : Operational

- Voltage Regulator Status : Operational

- Transmit Gain (dB) : < POT 255

- IF Cable Loss : < 8 dB

7. Masuk ke menu Performance \ RF Signal Quality, pastikan Burst Error Rate: < 10 %

8. Jika ada nilai yang menyimpang, segera hubungi system engineer.

SOP Pembuatan File Konfigurasi Aperto Packetwave BSU

2010-09-13T10:44:00.001+07:00

1. Buka Configuration Manager

2. Klik icon BSU

3. Pada Tab General, isi dengan data sebagai berikut:

General Configuration

System name : isi dengan KOTA_LOKASI_BSU_NOMOR

System location : isi dengan Alamat lengkap lokasi

System contact : isi dengan System Engineer

BSU ID : isi dengan ID BSU, atau samakan dengan System name

Mode : BRIDGE

Model : pilih PW 1000 atau PW 760

Timing reference : Internal, (pilih External jika dihubungkan dengan GPS)

Ethernet Configuration

Ethernet mode : 100 Mbps Full Duplex

4. Klik Tab WSS, isi dengan data sebagai berikut:

Frame

Frame parameters

TDD Frame size : 5000

Dnstream/ Upstream ratio : 70/30

Cell radius : 20 KM

Enable Wireless Port

Pilih port BSU yang akan digunakan; misalnya klik WSS1 saja

WSS1

Radio

Frequency band : General 2.6 GHz (2.500 – 2.700GHz)

Channel width : 5 MHz

Regulator power limit for radios : Default

Broadcast polarization : Vertical

Diversity Mode : Sync based

Center frequency (MHz) : isi dengan frekuensi 2675 – 2690 MHz

Sector name : isi dengan: omni/north/east/south/west

WSS / SU Power (dBm) : 20/23

Diversity : Disable

Rx power (dBm) : -80 (default)

QoS Link Parameters

Max. SUs / Service flows : 254/4

CIR / CBR / BE : 100 % CIR

5. Klik Generate BSU Configuration

Save Configuration

Save configuration to : Local System

Select destination Directory : pilih drive dan folder di PC/laptop

File name : tentukan nama file config, misal xxxx.cfg

6. Klik Save

SOP Menaikan dan atau Menurunkan Transmit Power Maksimum BSU / SU

2010-09-13T10:38:00.000+07:00

1. Browse BSU yang akan dinaikan atau diturunkan transmit (Tx) powernya.

2. Masuk ke menu Configuration \ Wireless Interface \ Radio

3. Pada bagian Power Controll, ubah nilai Tx Regulatory Power Limit (dBm) dengan nilai yang diinginkan, 13 – 23 dBm.

4. Klik Submit

5. Klik Configuration Upload

6. Klik Configuration Upload

7. Klik OK

8. Klik Return to Device Controll

9. Klik Reset

10. Selesai

SOP Instalasi Aperto BSU

2010-09-13T10:36:00.001+07:00

1. Siapkan kebutuhan barang sebagai berikut:

a. BSU

b. BSR

c. Antena

d. Bracket Antenna

e. Mounting Antena

f. Kupingan BSU

g. Cage nuts set

h. Kabel STP Cat. 5e

i. Kabel RG-6 Belden 1892BC/ Commscope 5781

j. Konektor RG-6 SNS6GS

k. Konektor RJ-45 Shielded

l. Rubber tape

m. Coax seal

n. Silicon glue

o. Kabel power BSU

p. Kabel Jumper TM LMR600/ Andrew LDF-4

q. Arrester STP OBO RJ-45SATM/8P

r. Arrester RG-6 OBO DS-F

2. Pasangkan kupingan BSU pada BSU

3. Pasang BSU pada rack dengan menggunakan cage nuts

4. Pasang mounting antenna pada tower

5. Pasang bracket antenna pada antenna yang akan digunakan

6. Pasang Antenna pada mounting

7. Pasang BSR di belakang mounting antenna.

8. Pasangkan kabel jumper dari Antenna ke BSR

9. Tarik kabel STP dan RG-6 dari BSU di rak (indoor) hingga BSR (outdoor)

10. Buat/crimping konektor RG-6 & RJ-45 indoor dan outdoor.

11. Pasangkan konektor RJ-45 dan RG-6 pada BSU dan BSR

12. Gunakan rubber tape, coax seal dan lem silicon pada konektor yang berada di outdoor untuk melindungi dari air dan karat.

13. Cek kembali hasil instalasi untuk memastikan bahwa seluruh perangkat dan komponen pendukung sudah terpasang dengan baik.

14. Selesai.

Cara meng-crimping kabel UTP ke konektor RJ-45

2010-09-13T10:32:00.000+07:00

Alat dan barang yang harus disiapkan:

1. Kabel UTP

2. Konektor RJ-45

3. Cable stripper / Cutter

4. Crimper (tang Crimping)

Langkah-langkah pembuatan:

1. Kupas pelindung/jacket kabel UTP kira-kira 2-3 cm dengan menggunakan cable stripper atau cutter.

2. Uraikan simpul kabel dan susun/urutkan kabel berdasarkan kode warna (straight atau cross).

3. Setelah disusun, rapihkan kabel, dan potong sehingga kabel pas masuk ke konektor, kurang lebih 1,2 cm

4. Masukan kabel ke dalam konektor, dengan tidak merubah urutan kabel.

5. Setelah kabel masuk dengan sempurna, masukan konektor ke dalam crimper, lalu tekan crimper hingga terdengar bunyi.

6. Test apakah hasilnya baik atau tidak dengan menggunakan kabel tester.

7. Selesai