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Guide to OptiX OSN 3500&2500 V001R001 Local Commissioning

engineering

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Guide to OptiX OSN 3500&2500 V001R001 Local Commissioning

1.1  Preface

Before beginning the single-station commissioning and system commissioning, take heed of the following points:

1.1.1  The single station must be tested carefully

The tests include 100% correctness of the cable connection and performance of the single station. It is not enough that the equipment can manage to work. This requirement is too low, leading to many future problems, some being contingent. The technicians should make full use of their presence on-site to discover and remove more faults.

1.1.2  100% correctness of the cable connection

The connectors should be connected correctly.

The receiving/transmitting ends of the connector should be connected correctly. Discuss with the user about their requirement during the installation.

The connectors should be in good contact (This point is prone to be ignored. Frequently there are problems that coaxial connectors are not fully well connected).

The optical interface should be clean. After the commissioning, the optical interfaces that are not working should wear optical hat.

1.1.3  Requirements for the single-station performance test

1)         The test should cover all the hardware devices, including those that are not being used at present to ensure later smooth upgrade and expansion.

2)         The time the test takes should be as long as possible, at least more than 1 hour. If the test shows continuous small BER, find out the reasons. If the test shows occasional burst BER without obvious causes or not of continuity, just ignore them.

3)         If the single-station test is well done, the system test should have no big problem. The purpose of the system test is to check the global network performance.

4)         When instrument and meters are not available, use the built-in pseudo-random BER test function to carry out the test.

1.1.4  Indexes test

The technicians should discuss with the customer about the items to be tested during the acceptance test before the single-station commissioning, in particular the items and the ports to be tested, preferably in the formal written form (or in the pre-start coordination meeting record)

The test items that can be carried out during the single-station commissioning should be done at that stage. The result should be written in Test Record, each page of which should be signed by the customer’s representative.

It is undesirable for the technicians to casually decide some test items based on their own judgment, resulting in the customer’s refusal to accept the acceptance test.

1.1.5  System functional test is required

This includes reliability of the system switchover, active/standby switchover, and reset.

1.1.6  Work ethic is a prerequisite to do the work well

If the technicians follow the above instructions well, most of the deployment work will be well done naturally.

1.2  Checking the Single-Station Hardware

1.2.1  Checking the cabinet installation

Before power on each cabinet, the technicians should check the hardware. The inspection should strictly follow the Installation Manual or Optical Network Hardware Quality Standards. Specifically:

The several cabinets should be positioned neatly. Each cabinet should be stable.

The cable exit in the upper enclosure frame of the cabinet should face the cabling ladder in the equipment room.

The orderwire phone and antistatic wrist strap are in the right position. The technicians should remind the workers of the equipment room that such things cannot be used for other purposes.

There are no rubbishes in the cabinet.

1.2.2  Checking the sub-rack installation

Is the sub-rack grounded?

Make sure that are no nuts or short straps in the sub-rack.

1.2.3  Checking the resistance between the power cable post

The PBS in OSN 3500/2500 is removed and the power supply is provided by PIU board. There is a power conversion board at the top of the cabinet that acts as a DC distribution box through where the customer’s power enters the cabinet. The output cable terminal socket provides the incoming external power supply to the sub-rack. The left output cable terminal socket provides electricity to the PIU board at the left side of the OSN 3500/2500 sub-rack and the right output cable terminals socket provides electricity to the PIU board at the right side of the sub-rack. Because a 2.6m cabinet can accommodate maximum 4 OSN 2500 sub-racks, there are 4 power switches. The panel is shown in Figure. 1.

1. Grounding screw

2. Protection grounding cable

3. First power grounding cable (RTN1(+))

4. First power cable (NEG1(+))

5. Second power grounding cable (RTN2(+))

6. Second power cable (NEG2(+))

7. Input cable terminal socket

8. Left output cable terminal socket

9. Right output cable terminal socket

Figure 1 Panel of the OSN 3500/2500 Power Conversion Board

The OSN 3500/2500 power conversion board provides two independent -48V inputs, the first of which provides electricity to the left output cable terminal and the second of which provides electricity to the right output cable terminal. Therefore when the customer has only one -48V input, the power conversion board should be shorted.

1.2.3.1 PIU board

PIU board provides stable -48V power to the system and outputs auxiliary power to the external entities. It provides lightning protection and EMI filter to the whole equipment. The two PIUs under single-sub-rack configuration are in hot-standby configuration: PIUs for the OSN 3500 sub-rack are inserted in slots 27 and 28 and PIUs for the OSN 2500 sub-rack are inserted in slots 22 and 25. There is a DB3 cable connector capable of anti-reverse-connection in the PIU panel for connecting to the power of the sub-rack; There are also two auxiliary power output connectors (square and 4 pins) for providing power supply to COA, TDA, and HUB. Take heed not to short circuit the HUB power interface when installing the cable.

1.2.3.2 Checking the resistance between the cable posts

As can be seen from the above figure, there is no cabinet power switch in the power conversion board at the top of the OSN 3500/2500 cabinet. Therefore the resistance to be tested is the one between -48V1 (or -48V2) and BGND (or PGND) of the power conversion board under the case that the sub-rack power switch is open or close. The correct result of the test should be:

l           When the sub-rack power switch is open, the resistance between -48V1 (or -48V2) and BGND (or PGND) should be ¥;

l           When the sub-rack power switch is close, the resistance between -48V1 (or -48V2) and BGND (or PGND) should be about a dozen KW;

The correct testing method is: The positive of the Ohmmeter should be connected to BGND (PGND) and the negative to -48V. If they are connected in the inverse order, the measured value will be lower than the actual value, usually lower than 10KW. After the test is over, all the power switches should be disconnected.

If when the sub-rack power switch is close, there is a problem that the resistance between - 48V and BGND is smaller than 20, it means that –48V and BGND of a board in the sub-rack are shorted. This problem must be removed first before the power-on commissioning can proceed.

In the OSN 3500 system, the SCC board monitors the two -48V inputs and in the OSN 2500 system, the SAP board monitors the two -48V inputs. The voltage ranges between -48V±20% or -60V±20%. There are over-voltage or under-voltage alarms for voltages that exceed this range.

1.2.4  Checking the cabling

Check the wiring of the power cable, ground cable, trunk cable, and pigtail cable. The cabling should be neat and should comply with the cabling path specified in the Installation Manual. The power cable, ground cable, trunk cable, and pigtail cable should be marked correctly.

Note: The ground cable should comply with SDH Transmission Equipment Grounding Specification.

Caution: The voltage between the protective ground and working ground should be less than 0.5V.

1.2.5  Checking the appearance of the board

Feed back to the Company in case of any of the following exceptions:

1.      Any of the fixing screws of the boards is loosened.

2.      The metal finger at the side of the panel of the board is raised.

3.      The handles of the cross-connection clock board are not buttoned (The tact switch should be closed).

4.      The boards are not inserted well or the board panels are not buttoned. (OSN3500/2500 boards use sheet-metal panel different from former products).

5.      At any time the technicians should wear antistatic wrist strap to contact the board.

1.2.6  Do not mistakenly connect the interfaces of the OSN 3500 AUX board

There are 24 RJ45 interfaces in the panel of the OSN 3500 AUX board but the definition of each interface is different from each other. Take heed not to connect them mistakenly to avoid damaging the internal chips of the board.

1.2.7  Checking the jumper of the AUX board

There is a jumper switch (numbered J9) at the lower right of the AUX board. A shorted jumper means OSN3500 sub-rack is the main sub-rack; a non-shorted jumper means OSN3500 is an extended sub-rack. The technicians should check on-site the jumper of the AUX board.

1.2.8  Checking the power jumper

By default the OSN3500 SCC board checks the -48V power ranging from -41V~-60V. In case of -60V power supply, the jumper hats of jumpers J16 and J17 in the SCC board should be removed.

To check the OSN2500 power supply (-60V), remove the jumper hats of J9 and J10 in the SAP board.

1.2.9  Finish the parts of equipment documents concerning the single station

It is not allowed to draft the engineering technical documents after the project is over. The information of the single station should be completely written down before the single station commissioning. The names of the boards, software/hardware versions, distances of the optical interface boards, and single mode/multimode information should be listed in reference to the packing list and the accessories.

1.2.10  After the hardware of the single station is tested, all the power switches should be disconnected

1.3  Cabinet Power-on Testing

1.3.1  Checking the fuse capacity of the customer’s power output terminal

The power consumption of a single OSN 3500 sub-rack is 760W and the fuss capacity is 20A; The power consumption of a single OSN 2500 sub-rack is 350W and the fuss capacity is 15A.

For the fuse capacity of the sub-rack please refer to Guide to Selecting the Fuse for the User Side Transmission Equipment.

1.3.2  Checking the voltage of the customers power output

The voltage of the customer’s power output measured at the busbar at the top of the cabinet should be -48V ± 20% (or -60V±20%).

Caution:

If the customers voltage is out of this range, the technician should make modification proposal to the customer and shall not power on the equipment.

1.3.3  Powering on the cabinet

1)         After the above inspection is over, connect the power cable and ground cable to the wire posts at the top of the cabinet. Note that before the power cable and ground cable can be connected to the first cabinet of each row or to the power supply equipment, they should be first connected to and fixed in the wire posts at the top of OptiX. At this time the sub-rack power switches of the OptiX equipment and the power switch of the power supply equipment should be off.

The customer’s technicians responsible for supervising the power supply equipment should be on-site when the power cable is being connected to the power supply equipment. Preferably the power cable should be connected by those technicians (But HUAWEI engineers should provide the line sequence of the OptiX power cable and ground cable or the technicians should refer to the engineering drawings).

2)         Open the power switch of the customer’s power supply equipment and observe. Measure the output voltage of the customer’s power supply at the power cable posts at the top of OptiX and make sure that the positive and negative poles are connected correctly.

Note that OSN 3500/2500 have cancelled the power box at the top of the cabinet and the LED at the top of the rack. OSN 3500 uses the AUX board for driving and concatenation and OSN 2500 uses the SAP board for driving and concatenation. Therefore the LED at the top of rack will be on at the power-up of the sub-rack.

1.4  Testing the Power-up of the Sub-rack

1.4.1  Checking the power-up of the sub-rack

Check whether the sub-rack power cables from the left and right power terminals of the power conversion board at the top of the cabinet are correctly connected to the two PIU boards. The DB3 fixing screws in the PIU boards should be tightened and all the connectors should be connected firmly.

If no problem is found in the check, open the sub-rack power switches under the input power terminal at the top of the cabinet one by one.

1.4.2  Checking the fans

The fans of OSN 3500/2500 have high, intermediate, and low speeds and low-temperature shutdown function, all of which can be configured by software. The fan system can automatically adjust the speed of the fans subject to the temperature of the environment. No manual control is needed. Therefore do not plug out the fan box for no apparent reasons. The temperature sensors are placed at the cross-connection board and the temperature information is processed by the SCC. The fan boxes issue speed adjustment command or shut-down command at low temperature.

The fans of OSN 3500/2500 support hot-plug (though hot-plug should not be abused). There is no switch but one LED in each fan. After the sub-rack power switch is turned on, the fan sub-rack is turned on also. Check whether the green LED at the panel of the fan sub-rack is on. Green LED that is on means that the fan is running normally. Red LED that is on means fault. Yellow LED that is on means shut-down at low temperature. Wind should be detected by the hand placed at the bottom or top of the sub-rack (do not touch the fan). The customer’s representatives and the equipment room technicians should be told how to clean the air filter and should be reminded of the importance of periodic clearing at a period of 2 ~ 4 times per month.

1.4.3  Observing the running status or alarm status of each board

If the equipment already has configuration data, the boards should be able to work 2~3 minutes after the sub-rack is powered on.

The STAT LED should be in green at the start of the board. A red LED means there is an alarm, the reasons for which should be found out from the NMS. Except the LEDs in the SCC, there should be no LEDs that are flashing in other boards. A board whose LED is off is not inserted correctly, is faulty in hardware, or has bent pins in its motherboard. If the board’s LED is off, first check whether the board is inserted correctly, whether there is any fault with the hardware, or whether the there is any toppled pin in the motherboard. If the board is found to be faulty, replace it with a new one.

1.4.4  Testing the ALMCUT button of the OSN 3500 SCC board and the OSN 2500 CXL board

The ALMCUT switch in the OSN 3500 SCC board and OSN 2500 CXL board is the alarm sound removal button. When the host detects emergency alarms in the whole NEs, the buzzer emits ringing alarm. There are two ways to remove the alarm:

Way 1: Press ALM_CUT for a short moment to close the current ringing alarm. Thus the ringing is removed (though the alarm still exists). If new emergency alarm occurs, the ringing alarm will be triggered again).

Way 2: Press ALM_CUT for a long moment to remove the ringing permanently. Thus the ringing will be removed permanently. New emergency alarms will not trigger the ringing any more. After the ringing is removed permanently, the ALMC LED turns yellow, through which one can judge whether the ringing is removed permanently.

After the SCC board is reset, the ringing will not be removed. To permanently remove the ringing, press ALMCUT for a long moment again.

Pressing ALM_CUT for a long moment again turns off the ALMC LED and the alarm ringing takes effect again.

Before leaving the equipment room, one should cancel the permanent removal of the ringing.

1.4.5  Testing the Reset key of the OSN 3500 SCC board and of the OSN 2500 CXL board

Press the Reset key of the OSN 3500 SCC board and of the OSN 2500 CXL board to reset the board. After 2 minutes, resetting is over and the board is in normal working status.

1.4.6  Testing the connection of alarms to external entities

If the customer requires that the alarm signals from the Optix equipment is connected to the customer’s first cabinet of each row, or that the alarm signals from the external equipment is connected to the Optix equipment, then the connection of the alarms to the external entities should be tested.

The alarm signals are outputted from the ALM01 interface of the AUX/SEI board. Concatenated alarms use the ALM02 interface. The pins of these two interfaces have the same meaning and can output alarms in four Boolean values that include one emergent alarm and one major alarm.

The pins of the alarm cable are duly marked. Please check whether the cable is connected to the correct position of the first cabinet of each row. After the connection, if there is any alarm from the OptiX equipment, the alarm should be able to connect to the user’s external equipment (such as the first cabinet of each row) that emits light or sound accordingly. Of course, if the alarm emitted by the first cabinet is in the form of sound, a user should be able to mute the sound from the cabinet.

1.4.7  Checking the orderwire phone

The ringing switch of the orderwire phone should be in ON position to avoid the situation that when there is an incoming orderwire call, the phone set does not ring and people mistakenly judges that the orderwire board is faulty.

Pick up the phone set and press Talk, the LED in the phone set should be on and people should hear the dial tone. At this time the phone set is in the hook-off status. Press Talk again, the LED of the phone set is off (in hookon status).

If there is no dial tone in the phone set, it is likely that the orderwire of the NE is not configured. Use the command line to check whether the parameters are configured correctly.

Note that the connector of the orderwire phone set should be connected to the “PHONE” interface of the AUX/SEI board and the dial mode switch of the phone set should be in “T” (DTMF).

1.5  Configuration and Commissioning

1.5.1  Ensuring correct connection of the network cables and network ports

There are three 10M/100M Ethernet interfaces in the panel of the OSN 3500 AUX board: ETH, COM, and EXT. There are two 10M/100M Ethernet interfaces in the panel of the OSN 2500 SAP board: COM and ETH. The Ethernet interfaces of the AUX/SAP board use less-than-100m standard network cables or crossover cables.

The network cable that is connected to the commissioning notebook computer or NMS computer should be inserted to the ETH interface of the AUX/SAP board. The network adaptor of the computer should be in self-negotiation mode. The IP address of the network interface of the computer should be in the same network segment as the IP address of the NE, usually 129.9.0.X.

A board that wants to communicate with AUX/SAP should connect to the COM interface of AUX/SAP, in which case the IP address of the network interface of the computer should be 192.168.0.X.  Note that 192.168.0.X should not be the IP address of the board. Otherwise the IP address of the board is in conflict with the internal IP address of the board. For OSN 3500, X cannot be within 1~18; for OSN 2500, X cannot be within 5~14.

There is an EXT interface in OSN 3500 that is located in the AUX board. This interface connects to the main sub-rack or extension sub-rack for providing the service configuration and scheduling of the extension sub-rack.

The three network interfaces (ETH, COM, and EXT) have their own LEDs. The green LINK LED indicates connection: On means connected and off means disconnected; The orange ACT LED indicates data reception or transmission: Flashing means data being transceived and off means no data being transceived.

1.5.2  Setting NE ID

The NE IDs of OSN 3500/2500 are configured via software. There is no ID switch in the SCC board. The command that sets the NE ID is as follows:

:cm-set-neid:NeID;

NeID: NE ID in decimal ranging from 1~65529. Reserved value is 65534.

After the NE ID is set by the command line, the NE resets automatically for the NE ID to take effect. If the NE ID is not changed manually, it changes automatically with the NE ID. The user needs to re-login the NE.

Before the NE is delivered, the NE ID has been initially set. The technicians on-site can change the ID according to the network planning.

Cautions:

1.      The host software uses the reserved NE ID 0xFFFA (655354) for the SCC that does not have NE ID. It is required that the NE whose ID is the reserved value should be set with a new ID.

2.      Setting NE ID cannot use the reserved ID.

3.      Before the setting, make the network planning carefully to avoid duplicate NE IDs; Otherwise routing will fail.

1.5.3  Setting NE IP

IP setting is needed for gateways. The IP address of OSN 3500/2500 is independent of the NE ID. After their IP is set, the IP does not change with ID. Usually the NE’s gateway, submask, and subnet need to be set manually. The default subnet number of the IP address is 129.9 and the subnet mask is 255.255.0.0. The technicians on-site should use the network IP planning provided by the customer to set the gateway IP, gateway, and submask. The command that configures the NE IP is as follows:

:cm-set-ip: NeIp format of the IP address such as 129.9.0.1

Note: Because of the defects of the operating system, if both the IP address and the subnet mask of the NE need to be changed, the subnet mask should be changed first, and then the IP address.

1.5.4  Checking the software version

After an NMS terminal is connected to an NE, check whether the board, FPGA, host, and BIOS software versions are matching with each other by the NMS/command line. The reference of the checking is the latest Version Configuration Information of YF-FTP. Any mismatching should be dealt with by upgrading/downgrading.

Then check whether these versions are consistent with the packing list and the attached software version table. If yes then write the consistency down in the version information of the Equipment Documents. The references are the packing list and the attached accessories. Refer to the data obtained by querying for the version information of the documents.

1.5.5  Testing the optical interface parameters

1.5.5.1 Testing the launched power

Testing meter: Optical power meter

Before the testing, clean the pigtail fiber head and the flange with alcoholic cloth. The testing should be carried out at the board side. Select the appropriate wavelength to test the launched power of each line interface board and write down the results in the Testing Record Table of the Acceptance Test Manual.

Compare the results of the testing with the indexes (see the Acceptance Test Manual). Find out the reasons for any inconsistency until the testing passes. The result of the testing should be signed by the customer’s representative. Refer to the Acceptance Test Manual for the testing methods.

Caution!

If the Automatic Laser Shutdown (ALS) of the optical board of OSN 3500/2500 is enabled, the optical board will not transmit light signals when it receives no light signals, leading to failure in measuring any optical launch power, in which case disable ALS with this command: :cfg-set-als:bid,pid,disable;.

1.5.5.2 Actual receive power of the own station

Measure the actual receive optical power at the OptiX optical interface board sent from the peer station and record the value in the Test Record. The actual receive optical power of the own station must meet the following requirements:

The actual receive optical power shall be 3 dB greater than the sensitivity index of the optical board but is 5 dB less than the overload optical power index of the optical board. Refer to the related technical documents for the ITU-T codes of the OptiX optical board and refer to the Technical Manual for the code values of the optical board.

If the receive optical power is too small, check whether the distance of the optical cable is too long or whether the optical connectors are in good condition (whether there are any stains), or whether the optical cable transmission has too large attenuation. In case of too large optical cable attenuation, ask and assist the customer to modify; in case of too long optical cable, determine whether such problem is caused by erroneous survey or erroneous optical board configuration and feed back to the Company by the related procedure, or consider replacing the optical board or adding an optical amplifier.

The Configuration Manual of OptiX OSN 3500/2500 stipulates in detail the specifications of the attenuators (subject to the surveyed distance of the optical fiber). In principle the attenuator shall meet the on-site requirements. If in practice the optical receive power of some optical boards is too large, the technician can apply to the Local Office for LC type optical attenuator to ensure that the actual receive optical power is within the above range. If the delivered attenuators do not match the actual distance of the optical cable and the distance used by the optical board, feed back to the Company by the related procedure.

An optical attenuator is usually added at the RX of the optical board. The LC type optical attenuator is directly added at the IN interface of the optical board. It is recommended that the pigtail fiber should mark “To add attenuator”.

Caution: In practice, the actual receive optical power of the optical board must be ensured to be within the above range.

1.5.5.3 Measuring the attenuation of the optical cable and pigtail cable by measuring the optical power

l           Measuring the attenuation of the optical cable

Measure the actual optical receive power at the ODF at the line side of the own station. Compare the optical launch power at the peer side with the optical receive power at the ODF to see if the attenuation is less than the standard value of the optical cable. If the attenuation is too large, ask the customer to find out the reasons and modify it quickly. Such problem shall not be sheltered simply because it does not affect the service for the moment.

l           Measuring the attenuation of the pigtail fiber

Measure the actual optical receive power at the ODF and optical board of the own station. Compare these two optical receive powers to see if their difference is within 1.5dB. If not, and if the problem is not caused by poor connection of the optical connectors or too tightly bound pigtail fiber, it can be determined that the performance of the pigtail fiber is poor. Replace the pigtail fiber by the related procedure. If the pigtail fiber is bound too tightly, leading to large attenuation, the cabling of the pigtail fiber must be adjusted.

1.5.6  Test of other single-station indexes (where necessary)

The indexes of an optical interface only include sensitivity, overload point, STM-N input interface jitter tolerance, STM-N output jitter, and STM-N jitter transfer function. The indexes of an electrical interface are input jitter tolerance and output jitter.

HUAWEI technicians shall reach agreements as to the indexes to be tested with the customer. The technicians shall test those items according to the Agreement of Final Acceptance Test and the result of the test shall be signed by the customer’s representatives at the completion of the single-station commissioning.

1.5.7  100% correctness of the connectivity of all the electrical ports

The test of the connectivity of the electrical ports and of the cabling should be performed after the OptiX equipment and DDF are wired.

Make an external loopback of the first 2M in the NMS and connect the BER tester to the first 2M port of the DDF (note that the TX and RX shall be connected correctly). The alarm in the BER tester shall disappear. Then cancel the external loopback from the NMS. There shall be an alarm in the BER tester, meaning that what the BER tested is connected to is indeed the first 2M interface and that the TX and RX cables of that 2M interface are connected correctly. Check the receive and send cables of the E1/T1/E3/T3/E4/155M port in likewise manner. Note that both the connected and disconnected statuses shall be tested.

The final result of the test shall show that the connectivity of all the electrical ports is normal (cables are connected correctly, no short circuits, no disconnections), that the port numbers of the equipment correspond to the port numbers in the DDF in the right sequence. In case of any failure, remove the failure first before proceeding.

1.5.8  100% correctness of the pigtail cabling

1)         The optical power at one side of a pigtail fiber should be detected at the ODF if the other side (transmitting side) of the pigtail fiber is connected to the optical board and the optical power should not be detected if the pigtail fiber is disconnected from the optical board.

2)         The RLOS alarm of the optical port should disappear if both the transmitting and receiving sides of a pigtail fiber are connected to the optical port and are looped back at the ODF. There should be RLOS alarm at the optical port if the:cfg-set-laser:bid,pid,close; command is used to close the laser and the alarm should disappear if the laser is opened again.

The above two steps ensure that the two pigtail fibers are connected to the transmitting and receiving interfaces of the optical port.

1.5.9  Inter-board LAN SWITCH channel testing

1.5.9.1 Principle of the test

If each board can respond to the :cfg-get-bdverinfo:bid; command delivered from the command line, it means that the LAN SWITCH port of that board is OK. This is because for a command to return success, the host must deliver a type to each board, then reads from that board.

1.5.9.2 Testing method

:cfg-get-phybd; and ping commands

The cfg-get-phybd command queries not the in-position physical status of the board but how the board responds to the command. If the board responds normally, it can be judged that the communication between the LAN SWITCH and the board is OK. If the board does not respond to the command, use the ping command to test whether the board communicates normally.

One of the reasons that a board cannot be pinged is that the board is not inserted well or has toppled pins so the board’s position cannot be judged correctly, leading to wrong IP address. This can be confirmed by pinging the broadcast address 192.168.0.255, then looking up the ARP table (by the arp –a command).

1.5.10  Testing the bus of the TPS electrical port protection unit

TPS configuration is tested at the single-station commissioning.

There are two TPS protection configurations for OSN 3500:

E1 / T1 service:

The protection board is inserted in Slot 1 and the operating boards are inserted in Slots 2 to 5 and 13 to 16 to provide 1:8 protection.

34M/45M/140M/155M service:

The protection board is inserted in Slot 2 and the operating boards are inserted in Slots 3 to 5 to provide 1:3 protection.

The protection board is inserted in Slot 16 and the operating boards are inserted in Slots 13 to 15 to provide 1:3 protection.

There are two TPS protection configurations for OSN 2500:

E1 / T1 service:

The protection board is inserted in Slot 5 and the operating boards are inserted in Slots 6 to 7 and 12 to 13 to provide 1:4 protection.

34M/45M/140M/155M service:

The protection board is inserted in Slot 6 and the operating board is inserted in Slot 7 to provide 1:1 protection.

The protection board is inserted in Slot 13 and the operating board is inserted in Slot 12 to provide 1:1 protection.

Provided that the protection board and the operating boards are not in conflict, multiple protection groups can coexist.

The TPS board for the E1/T1 service does not need bridging board and the bridging boards TSB4/TSB8 configured in other TPS boards are not capable of transiting outgoing lines, therefore the TPS in OSN 3500/2500 does not support additional services. When no TPS is configured, the slot for the protection board can be inserted with service boards.

The testing method for OSN 3500 is as follows:

:cfg-init-all;

:cfg-set-devicetype:OptiXOsn3500,standard;     //Case sensitive

:cfg-set-nename:64,'OSN 3500 example';

:cfg-add-board:9&10,gxcsa:1&2&3&4&5,ssn1pq1:8&11,ssn2sl64:18,nscc;

:cfg-add-board:19&21&23&25,ssn1d75s;     //Interface boards and SCC shall be created explicitly

//Configuring TPS protection groups

:cfg-add-tpspg:1,4;               //Create TPS protection group 1 that has 4 working units

:cfg-set-tpswtrtime:1,600;   //Set the wait-to-recover time of the 1st TPS protection group to 600 seconds

:cfg-set-tpsbdmap:1,0,1       //Map the 1st board as the protection unit of the protection group 1 (fixed)

:cfg-set-tpsbdmap:1,1,2      //Map the 2nd board as the operating unit 1 of the 1st TPS protection group

:cfg-set-tpsbdmap:1,2,3      //Map the 3rd board as the operating unit 2 of the 1st TPS protection group

:cfg-set-tpsbdmap:1,3,4      //Map the 4th board as the operating unit 3 of the 1st TPS protection group

:cfg-set-tpsbdmap:1,4,5      //Map the 5th board as the operating unit 4 of the 1st TPS protection group

:cfg-set-tpspri:1,1,1;             //Set the protection priority of the 1st working unit as 1, which is the highest

:cfg-set-tpspri:1,2,2;             //Set the protection priority of the 2nd working unit as 2

:cfg-set-tpspri:1,3,3;             //Set the protection priority of the 3rd working unit as 3

:cfg-set-tpspri:1,4,4;             //Set the protection priority of the 4th working unit as 4, which is the lowest

//Configuring the service and loopback from the cross-connection board

:cfg-add-xc:0,2,1&&32,0,0,2,1&&32,0,0,vc12;

:cfg-add-xc:0,3,1&&32,0,0,3,1&&32,0,0,vc12;

:cfg-add-xc:0,4,1&&32,0,0,4,1&&32,0,0,vc12;

:cfg-add-xc:0,5,1&&32,0,0,5,1&&32,0,0,vc12;

1            :cfg-verify;                                    //Verify



The D75S of each slot is serial connected by coaxial cable: T1 connected to R2 and T2 connected to R3, and so on, until only R1 and T32 ports are left. Connect the tester to the R1 and T32 of each D75S, the service shall be normal and no alarm will be found. Observe the ACT LED of the PQ1 board, the ACT LED of the PQ1 boards in slots 2~5 shall be on and the ACT LED of the PQ1 in slot 1 shall be off; the TPS protection group is found to be in normal status.

                                            cfg-get-tpsstate:1

                                                TPS-SWITCH-STATE                               

                       PG-ID  SWITCHED-WORK-UNIT  SWITCH-STATE                    

                      1      0                   tps-idle                        

Total records :1                           

In case of any exception, remove the exception before proceeding.

Connect the tester to R1 and T32 of D75S and pull out PQ1 in slot 5, the tester shall show that the service is disconnected instantly and then recovered right away. Observe the LEDs: The ACT LED of PQ1 in slot 1 shall be on and no alarm of that board is found; the protection board in slot 1 reports TPS_ALM; the TPS protection group is in the following status:

:cfg-get-tpsstate:1

                                                TPS-SWITCH-STATE                               

                      PG-ID  SWITCHED-WORK-UNIT  SWITCH-STATE                    

                      1      4                   tps-auto         

Meaning that the 4th working unit of the 1st TPS protection group has incurred TPS protection switching.

Keep the status quo unchanged and pull out the PQ1 board in slot 4, the tester shall report an alarm, showing that the service in board 5 is interrupted. Connect the tester to R1 and T32 of D75S in board 4, the alarm in the tester shall disappear, shows that the service in board 4 is normal. Querying the board alarm will find that the protection board in slot 1 reports TPS_ALM and that the TPS protection group is in the following status:

:cfg-get-tpsstate:1

                                                TPS-SWITCH-STATE                               

                      PG-ID  SWITCHED-WORK-UNIT  SWITCH-STATE                    

                      1      3                   tps-auto          

Meaning that the 3rd working unit of the 1st TPS protection group has incurred TPS protection switching.

This is because the protection priority of PQ1 in slot 4 is higher than that in slot 5. Test the protection bus and priority of the PQ1 boards in slots 3 and 2 in likewise manner.

Also test the TPS protection bus in other boards in likewise manner. Modify the test file according to the result of the above test.

Caution: After the TPS protection group is configured, because it takes time to obtain physical type of the processing board from the processing board, the technician shall wait for 2 minutes before proceeding with the switchover test. This time is not related to the time it takes to recover from the switchover.

1.5.11  Testing the switchover of the active/standby boards

In the OSN 3500 systems, the cross-connection clock boards in slot 9 (active by default) and 10 are active/standby to each other and the SCC boards in slot 17 and 18 (active by default) are active/standby to each other.

In the OSN2500 system, physically the cross-connection module, the clock module, and the SCC module are in SSQ1CXL. Slots 9 (active by default) and 10 are active/standby to each other. The switchover of these three modules is bundled.

Take heed of the following points when performing the switchover test:

1.      The switchover operations between two boards should be at an interval of at least 1 minute.

2.      In OSN3500/2500, when only high-order cross-connection service is configured, the active/standby switchover or manual switchover of the cross-connection board incurs no bit errors; whereas in low-order cross-connection service, the switchover may lead to instant interrupt of the service. This is caused by the principle of the low-order cross-connection.

1.5.11.1 Active/standby switchover of the cross-connection clock board of OSN 3500

There are two methods:

1)         Push the up and down handles of the cross-connection board to perform the switchover.

2)         Use the command line: cfg-set-dpsswitch:1.9(or 10);

1.5.11.2 OSN 3500 active/standby switchover

There are two methods:

1)         Push the up and down handles of the cross-connection board to perform the switchover.

2)         Use the command line: cfg-set-dpsswitch:2,17 (or 18);

1.5.11.3 OSN 2500 active/standby switchover

As explained previously, the switchovers of the cross-connection module, clock module, and SCC of OSN 2500 are bundled. Therefore their manual switchover commands are the same.

There are two methods:

1)         Push the up and down handles of the cross-connection board to perform the switchover.

2)         Use the following command line:  cfg-set-dpsswitch:PgId,DstBid

where PgId is the protection group ID whose value is uniformly 1;

DstBid is the destination cross-connection board ID and is 80/81 for 2500;   //   Logically, slots 80 and 81 are for cross-connection and clock modules and slots 82 and 83 are for SCC. Because of bundled switchover, only the logical slots of the cross-connection board are written here.

1.5.12  Testing of the single-station serial bus and monitoring of the alarm performance

As the last item of the single-station commissioning, the buses of all the already inserted boards shall be tested to ensure that the performance of the single station is stable. It is required that there shall be no bit errors during the 30-minute test. The general principle of writing the single-station test file is: Traverse all the inserted boards and their buses to test the configured service. The following example uses VC4 serial-connection to test the buses of all the inserted boards: Converge the services at the PDH ports to a VC4 of a line board, then serially connect all the VC4s of the line board to test those VC4s.

The single-station test file is as follows:

:login:'szhw','nesoft'; 

:per-set-endtime:15m,1990@0@0@0@0@0;

:per-set-endtime:24h,1990@0@0@0@0@0;

:cfg-init-all;

:cfg-set-devicetype:OptiXOsn3500,standard;   

:cfg-set-nename:64,'OSN 3500 example ';

:cfg-add-board:9&10,gxcsa:2&3,ssn1pq1:15,ssn1sep:8&11,ssn2sl64:18,nscc;

:cfg-add-board:19&21,ssn1d75s:33,ssn1eu04;   

:cfg-set-synclass:9,1,0xf101;     // Orderwire and clock configuration

:cfg-set-telnum:37,1,101;  

:cfg-set-meetnum:37,999;  

:cfg-set-reqtime:37,5;  

:cfg-set-lineused:37,8,1,used;

:cfg-set-meetlineused:37,8,1,used;

:cfg-add-xc:0,2,1&&63,0,0,15,1,1,1&&63,vc12;    // Service configuration

:cfg-add-xc:0,15,1,1,0,15,2,1,0,vc4;

:cfg-add-xc:0,15,2,1,0,15,3,1,0,vc4;

:cfg-add-xc:0,15,3,1,0,15,4,1,0,vc4;    

:cfg-add-xc:0,15,4,1,0,8,1,1,0,vc4;

:cfg-add-xc:0,8,1,1&&63,0,8,1,2&&64,0,vc4;

:cfg-add-xc:0,8,1,64,0,11,1,1,0,vc4;

:cfg-add-xc:0,11,1,1&&63,0,11,1,2&&64,0,vc4;

:cfg-add-xc:0,11,1,64,1&&63,3,1&&63,0,0,vc12;

:cfg-add-xc:0,3,1&&63,0,0,2,1&&63,0,0,vc12;  

:cfg-verify;

After the test file is delivered, self-loop the SL64 boards in slot 8 and 11 in ODF (with an optical attenuator), self-loop the 4 155M electrical ports of SEP1 in slot 15 in DDF with coaxial cables, and self-loop the 32 2Ms of the PQ1 board in slot 3 in DDF in turn. Then connect the TX of the BER tester to the RX of the first 2M of the PQ1 in slot 2 of DDF, connect the RX of the BER tester to the TX of the 32nd 2M of the PQ1 board in slot 2. The other ports of DDF in slot 2 are connected in this manner: First 2M TX connected to the second 2 2M RX, second 2M TX connected to the third 2M RX, and so on, as illustrated in the following figure.

1)         After they are connected in above sequence, the BER tester shall show no bit errors or alarms.

2)         Observe the performance data for more than 1 hour (the longer the better) in the NMS in the serial test, loopback, and BER tester connected statuses. The performance data should be normal (no bit errors and pointer justifications and the temperature shall be in normal range).

3)         During the monitoring of the performance data, also periodically observe the NE alarms. Any unidentified alarms shall be removed.

4)         In case of any problems during the test, remove the problem before proceeding.

5)         Make full use of the built-in 2M pseudo-random BER test function to monitor the system performance.

1.5.13  Testing the actual configuration file to be delivered

Compile the actual configuration file of each station according to the networking and service configuration. Such work shall be finished at the preliminary stage of the commissioning.

During the single-station commissioning, the final configuration file to be delivered shall be tested:

1)         Make sure that there are no unidentified alarms;

2)         Sample-test the connectivity of the service to verify the correctness of the configuration file.

1.5.14  Other work

1.5.14.1 Backing up host database

After the configurations are delivered, it is time to back up the host database. This can be done from the NMS or by the following command lines:

:dbms-copy-all:mdb,drdb;

:dbms-copy-all:drdb,fdb0;

:dbms-copy-all:drdb,fdb1;

1.5.14.2 Internal ECC commissioning

In this test, when there are several NEs in a station (such as one main sub-rack and several extended sub-racks), all the NEs inside the station should be able to log in each other.

Not infrequently, the main sub-rack and extended sub-racks cannot log in each other because of wrongful optical fiber connection or incorrect setting. Such problem must be solved during the single-station commissioning; otherwise going back to the station will take time and effort.

1.5.14.3 Single-station power drop test

1)         Power on the station again after a 10-minute power drop and the boards should work normally without the need for manual interference.

2)         Power on the station again after a 10-minute power drop and the service should be normal. Make a self-loop of the optical board and sample-test the typical services to see if they function normally.

1.5.14.4 Others

1)         Before leaving the station, make sure that the ALMCUT of the ASCC board is not in permanent removal status.

2)         The ringing switch of the orderwire phone should be in ON position to avoid the situation that when there is an incoming orderwire call, the phone set does not ring and people mistakenly judges that the orderwire board is faulty. Make sure that the Talk button of the orderwire is closed to avoid the situation that the orderwire is always in the hook-off status, rejecting incoming calls.

3)         Before leaving the station, remove the remnant self-loop optical fiber of the test and the software’s self-loop setting inside the system.


Appendix: Table of OSN 3500/2500 Single-Station Commissioning Record

Table 1 Table of Single-Station Hardware Check Records

No

Item

Criterion

Result of the inspection

1.1

Checking the cabinet installation

1)       Compliant with the Installation Manual

2)      The fiber hole of the cabinet faces the cabling ladder in the equipment room

1.2

Checking the sub-rack installation

Sub-rack grounding: Make sure that there are no nuts or short straps in the sub-rack.

1.3

Checking the resistance between the power cable posts in the power box

1)      The –48V1 and –48V2 wire posts are not shorted

2)      No short circuits or exceptional resistors

1.4

Checking the compliance of the cabling

The path of the cabling is correct and the marking is complete

1.5

Checking the appearance of the board

1)      The metal finger at the side of the panel of the board is not raised.

2)      All boards are inserted to the bottom and the panel is well buckled.

1.6

Finish the parts of equipment documents concerning the single station

Finish the parts of equipment documents concerning the single station

1.7

Things to do before finishing the hardware inspection

After the hardware of the single station is tested, all the power switches should be disconnected

Table 2 Table of Cabinet Power-on Test Records

No

Item

Criterion

Result of the inspection

2.1

Pre-power-on inspection

1)      The capacity of the fuse of the customer’s output terminal is compliant

2)      The customer’s output voltage is compliant

2.2

Powering on the cabinet

1)      Connect and fix the power cables in the power wire posts at the cabinet top and then connect to the customer’s power output terminals. During this time, the power switches should be disconnected.

2)       Connect the power cables to the customer’s power output terminals. This operation should preferably be performed or confirmed by the customer’s electricians.

3)      The positive and negative poles shall be connected correctly.

2.3

ALM_CUT button at the top of the rack

The button functions normally


Table 3 Table of Sub-rack Power-On Test Records

No

Item

Criterion

Result of the inspection

3.1

Checking the power-up of the sub-rack

1)      The power cables in each PIU board are connected reliably and correctly.

2)      Each PIU board functions normally

3.2

Checking the fans

The fans run normally and the LEDs are normal

3.3

Checking the board’s LEDs

1)       The green RUN LED is normal

2)       No identified reasons that cause the lighting of the alarm LED

3.5

ALM-CUT button of the SCC board

The button functions normally

3.6

RESET button of the SCC board

The RESET button functions normally

Testing the connection of alarms to external entities

The wires are connected correctly and the light-sound alarm at the first cabinet of each row functions normally.

3.7

Checking the orderwire phone

1) The ringing switch of the orderwire is ON.

2) The orderwire has dial tone.

Table 4 Table of Configuration and Commissioning Records

No

Item

Criterion

Result of the inspection

4.1

Network cable connection

Check whether the operation terminals are connected to the COM1 of the ASCC board and COM2 of the COM board. Pay attention to the network cables and setting of the terminals’ IP address.

4.2

Correctness of the NE ID

1)      The NE ID is set correctly with the command line

2)      The setting of the IDs should be considered from a global perspective and should take into account future expansion

4.3

Software version

1)      The board software, FPGA, host, and BIOS software versions should match with each other

2)       Versions are recorded in the Equipment Archive.

4.4

Checking the buses of all the inserted boards

1)      The bus serial test file is written correctly and covers all the buses.

2)      No bit errors are found during the 10-minute serial test

4.5

SL64 and SL16 delivering the laser parameters

1)      Files are delivered correctly.

2)      Make sure that all SL64 and SL16 have delivered the parameter file

3)      SL64 and SL16 return performance data normally.

4.6

Testing the optical interface parameters

1)      The optical launch power is compliant

2)      The sensitivity of the optical receiver is compliant

3)      The overload point of the optical receiver is compliant

4)       The actual optical receive power of the own station is compliant

5)      The optical attenuator is configured correctly and the pigtail fiber is connected correctly.

6)      The attenuation of the customer’s optical cables and the pigtail fiber is normal

4.7

Other single-station index test

The test items specified by the final acceptance contract signed by Huawei and the customer are duly tested and logged.

4.8

100% correctness of the cabling

100% correctness of the cabling

4.9

100% correctness of the pigtail cabling

100% correctness of the pigtail cabling

4.10

BER of the working channel and protection channel

No bit errors in the working channel and protection channel during the 30-minute test

4.12

Inter-board LAN SWITCH channel testing

The :cfg-get-phybd command can query all the boards of the LAN SWITCH interface

4.13

TPS electrical interface protection unit bus testing

The bus is normal and the switching under the priority condition is normal

4.14

Active/standby board switching test

Active/standby board switching shall not incur bit errors in high-order service.

4.15

Monitoring of the NE performance and alarms

1)      In the serial test, loopback, and suspended meter status, the performance data should be normal during the at least 1 hour monitoring

2)      No alarms caused by unidentified reasons

4.16

Delivering actual configuration file

1)      No alarms caused by unidentified reasons

2)      Sampled service is normal

4.17

Backing up host database

Make the configuration after the final configuration file is delivered

Internal ECC commissioning

Inter-NE ECC is normal.

4.18

Single-station power drop test

1)      Power on the station again after a 10-minute power drop and the boards should work normally.

2)      Power on the station again after a 10-minute power drop and the service should be normal.

4.19

Things to do before leaving the single station

1)      Before leaving the station, make sure that the ALMCUT of the ASCC board is not in permanent removal status.

2)      Before leaving the station, make sure that the ringing switch of the orderwire is ON and the TALK key is OFF.

3)      Before leaving the station, remove the remnant self-loop optical fiber of the test and the software’s self-loop setting inside the system.

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