apostila

USER MANUAL

Acterna OTU-9100 Card mount OTDRActerna OTU-9100 Card mount OTDRActerna OTU-9100 Card mount OTDRActerna OTU-9100 Card mount OTDRIncludes: RTU 91000, 5024HD, 5024HD/FP, Includes: RTU 91000, 5024HD, 5024HD/FP, Includes: RTU 91000, 5024HD, 5024HD/FP, Includes: RTU 91000, 5024HD, 5024HD/FP, 5025HD, 5026HD, 5027HD, 5027VHD 5025HD, 5026HD, 5027HD, 5027VHD 5025HD, 5026HD, 5027HD, 5027VHD 5025HD, 5026HD, 5027HD, 5027VHD Manual reference 91000MO1 / 7cmotdr 91/03Software: Versions 6.xxPrinted: November 2003

2003 Acterna

The information contained in this document is the property of Acterna. It is only provided for the operation and maintenance of the instrument. It must not be duplicated without the prior written permission of Acterna.

Acterna Saint-Etienne 34 rue Necker42000 Saint-EtienneTel. +33 (0) 4 77 47 89 00Fax +33 (0) 4 77 47 89 70Web: www.acterna.com

http://www.acterna.com

OTU-9100

Notice

The information contained in this manual is subject to change without notice.Acterna shall not be liable for errors contained herein or for incidental orconsequential damages resulting from the use of this material.This document must not be photocopied, reproduced, or translated into anotherlanguage without the written consent of Acterna.

Visual Conventions

Note Information concerning the operation of the CMOTDR.

Important Important information concerning the correct operation of the CMOTDR.

Caution Message warning the user of the risk of damaging the instrument or losing information if the instructions are not respected.

Warning Message warning the user that he could be injured if the instructions are not respected.

Laser safety

The provisions contained in two standards define the safety procedures to beobserved both by users and by manufactures when utilizing laser products:• EN 60825-1 : 2001 - Safety of laser products – Part 1: Classification of

products, requirements and user guidelines. • FDA 21 CFR § 1040.10 - Performance standards for light-emitting products -

Laser products.Due to the range of possible wavelengths, power values and injectioncharacteristics of a laser beam, the risks inherent in its usage differ. The laserclasses form groups representing different safety thresholds.

ii USER MANUAL 7CMOTDR91/02

OTU-9100

Laser class applicable to the HD & VHD OTDR modules

Warning labels for the laser classes of the CMOTDR

Due to the reduced dimensions of the optical modules, it is not possible to attachthe required warning labels to them. In line with the provisions of Article 5.1 ofthe EN 60825-1 standard, the warning labels are illustrated in the following table.

Optical connector

The optical connector is the access point to the laser beam (see figurebelow).The user must take the necessary precautions concerning the optical output ofthe instrument and follow the manufacturers instructions.

Important Measurements on optical fibers are difficult to execute and the preci-sion of the results obtained depends largely on the precautions taken by the user.

AC/DC safety

Important In conformance with the recommendations of standard EN 61010, the instrument should be operated within the manufacturer’s guide-lines. Failure to do so may compromise the protection offered by the instruments design.

Modules Referencestandard

EN 60825-1, Edition 1.2, 2001-08

FDA21CFR§1040.10

OTDR Singlemode HD- at 1310 nm- at 1550 nm

Class 1MClass 1

Class 1Class 1

OTDR Singlemode VHD at 1625 nm Class 1 Class 1

Warning labels Reference standard

EN 60825-1,Edition 1.2, 2001-08

FDA21CFR§1040.10

Class 1

Class 1M

CLASS 1LASER PRODUCT

LASER RADIATIONDO NOT STARE INTO BEAM OR VIEW

DIRECTLY WITH OPTICAL INSTRUMENTCLASS 1M LASER PRODUCT

USER MANUAL 7CMOTDR91/02 iii

OTU-9100

iv USER MANUAL 7CMOTDR91/02

1Table of contents

Notice ...................................................................................................................iiVisual Conventions ............................................................................................iiLaser safety ..........................................................................................................iiAC/DC safety ....................................................................................................iii

Overview .............................................................................................1-1

Installation ......................................................................................... 2-1

Unpacking the instrument ................................................................. 2-1Installation and removal of the module .............................................. 2-1Connection of the fiber ...................................................................... 2-2Operation modes .............................................................................. 2-2

Remote operation .............................................................................................2-2Manual operation ............................................................................................2-2

Front controls and connectors ............................................................ 3-1

Front panel ........................................................................................3-1Led Indicators ..................................................................................................3-2VGA connector .................................................................................................3-2OTDR module ..................................................................................................3-2Reset pushbutton .............................................................................................3-2Remote control ports .......................................................................................3-2External terminal strips ..................................................................................3-3

Use of the keyboard and of the VGA monitor ...................................... 3-4Connection and setting for manual operation ............................................3-4Equivalence between functions and external keyboard ............................3-4Editing a text from the external keyboard ...................................................3-4

Remote control ................................................................................... 4-1

Connection of the CMOTDR to a PC .................................................... 4-1Connection to the RS232 interface .................................................................4-1Connection to the Ethernet Interface ............................................................4-2

Description of commands and queries ............................................... 4-3Command errors ..............................................................................................4-3

USER MANUAL 7CMOTDR91/02 v

OTU-9100

Command Format ...........................................................................................4-3Command Syntax ............................................................................................4-3Abbreviation of command header ................................................................4-3Linking commands ..........................................................................................4-4Parameters ........................................................................................................4-4Queries ..............................................................................................................4-4

Common commands ......................................................................... 4-5SRQ commands ................................................................................................4-5Status structure Registers ...............................................................................4-6

Specific commands .......................................................................... 4-7System setup commands ................................................................................4-7Identification commands for a previous measurement .............................4-8Next measurement identification commands .............................................4-9Configuration OTDR .....................................................................................4-10Result commands ..........................................................................................4-11Fiber commands ............................................................................................4-13Reading of OTDR results commands .........................................................4-14Principal commands ......................................................................................4-17CMOTDR commands ....................................................................................4-18

Maintenance ...................................................................................... 5-1

Maintenance procedure ..................................................................... 5-1Returning an instrument ................................................................................5-1Guarantee conditions ......................................................................................5-2

Cleaning .......................................................................................... 5-2Cleaning the front and rear panels and the covers .....................................5-2

Precautions governing optical connections ........................................ 5-2Cleaning the optical cable connector ............................................................5-2Cleaning the optical inputs or outputs of the CMOTDR ...........................5-2

Technical Specifications ..................................................................... 6-1

Mechanical specifications ..................................................................6-1Environmental conditions ................................................................. 6-2Electrical specifications .................................................................... 6-3

Input Power ......................................................................................................6-3Interfaces ...........................................................................................................6-3Processor reset ..................................................................................................6-3Forced Convection Cooling ............................................................................6-3

OTDR Measurement characteristics ................................................... 6-4Specifications of the modules ........................................................... 6-5

Wavelength and pulsewidth ..........................................................................6-5

vi USER MANUAL 7CMOTDR91/02

OTU-9100

............................................................................................................................ 6-5Laser class applicable to the modules .......................................................... 6-5Ranges for HD modules ................................................................................. 6-6Ranges for 5027 VHD modules ..................................................................... 6-6

Accessories ...................................................................................... 6-6

5024 HD/FP OTDR module ...................................................................7-1

Mechanical specifications .................................................................. 7-1

USER MANUAL 7CMOTDR91/02 vii

OTU-9100

viii USER MANUAL 7CMOTDR91/02

Chapter

1
1Overview
The OTU-9100 is a Card Mount OTDR (hereinafter the abbreviation "CMOTDR"refers to the Acterna OTU-9100). This is a test equipment for OTDR acquisitions. It is typically used in a central office for optical link monitoring.It is dedicated to be remotely controlled by a test system controller.It is composed of a CPU board plus a plug-in OTDR module.

These main features are as follows:

❏ Mechanical size: double Europe format,

❏ Remote control: RS232 or Ethernet,

❏ Local control using a keyboard and a monitor.

USER MANUAL 7CMOTDR91/02 1-1

Overview OTU-9100

1-2 USER MANUAL 7CMOTDR91/02

Chapter

2
2Installation
This chapter gives the following information:

❏ Unpack at delivery

❏ Installation and removal of the module

❏ Connection of the fiber

❏ Operation modes

❏ Software release procedure.

Unpacking the instrument

Remove the CMOTDR and its accessories from the packing case. Check thepresence of all the ordered accessories.If any part is missing or damaged please contact your local representative.The CMOTDR is delivered with the following accessories:• a User Manual.• a Certificate of Calibration• a Certificate of Conformance Data Sheet.

Installation and removal of the module

It is very easy to remove or install a module.

Caution The CMOTDR must be switched off for installation or removal of the module.

Removal of module

1. Completely unscrew the two large locking screws of the module.2. Carefully pull the module backwards to slide it out of its slot.

Installation of module

1. Make sure that the two large locking screws of the module are completely unscrewed.

2. Carefully slide the module back into its slot.3. Once the module is fully pushed back into its slot, keep pressure applied to

the front face while fully tightening the two locking screws to their stops; The panel of the module should be aligned with the panel of the chassis.


Installation OTU-9100

Connection of the fiber

Connect the fiber to the tester as follows:• Use a dry air spray to remove any dust from the fiber connector.• Connect the fiber connector to the optical socket of the CMOTDR.

Caution Take care to correctly align the connector to the optical socket other-wise the results obtained by CMOTDR will be affected by this bad connection.

Refer to the Maintenance Chapter for all the precautions relative to fiber optic connectors.

Operation modes

Remote operationRefer to chapitre 4.

Manual operationThe CMOTDR can be operated manually with an external VGA monitor and anexternal keyboard.Please refer to "Use of the keyboard and of the VGA monitor" on page 3-4.

Software Release ProcedureTo download a new software release to the CMOTDR proceed as follows:• Optionally connect a VGA display to the VGA output on the CMOTDR front

panel. • Connect the serial port of the CMOTDR to the serial port of the PC (report to

"Remote control ports" on page 3-2 and to "Connection to the RS232 interface" on page 4-1).

• Create on your hard disk, the directory: c:\release\cmotdr• Copy the files cmotdrcli.hex and media.sys in the new directory.

For RS232 interface only :

• On the first release procedure you need to install a "generic NULL modem" to dialog with the Dial-Up Networking of the PC and the CMOTDR unit. To do it, open "Modem Properties" (via Start /Settings/Control panel). Then click "Add", select "Don’t detect my modem" and load the installation file oem0.inf.

• Configure the CMOTDR unit in TCP/PPP remote control and configure the RS232 parameters to have a baud rate of 115200 bauds, RTS/CTS protocol, 8 bits, no parity. The CMOTDR unit is used as a PPP server with a fixed address: 172.16.28.2.

• On the PC, open the Dial-Up Networking box (programs\accessories) :


OTU-9100 Operation modes

• Then click ‘New...’, enter a new phonebook entry (CMOTDR Release for example) and configure the parameters for the generic NULL modem :

• Select the dial-up server type, the network protocol and click ‘TCP/IP settings’ to enter the IP address. Then valid :



• Click ‘Dial’ and valid (no user name neither password) :

For ethernet interface only :

• Configure the CMOTDR unit in Ethernet remote control.


OTU-9100 Operation modes

Common procedure for both RS232 or Ethernet remote control :

• On the PC, open a DOS command window and then execute :c:> ftpftp > open <IP address> /* ex : 172.16.25.212 */

user : userpassword : cmotdr

ftp > binary /* to force binary mode transfert */ftp > cd \ /* remote disk root */ftp > pwd “ 12.0/ ”ftp > hash /* a mark every 2Kbytes transfered */ftp > lcd c:\release\cmotdr /* Local change directory */ftp > put cmotdrcli.hex /* size about 5Mbytes */ftp > put media.sysftp > closeftp > quitc :> exit

• Then restart the CMOTDR unit by pushing the reset button, and a software upgrade window will appear (if you have a VGA monitor) and a short beep will be emitted by the CMOTDR for every block downloaded.

• During the transfer, don’t switch off the unit because failing to do so will cause the CMOTDR to begin another software release sequence at reboot.

Once the download is complete (between 1 to 2 minutes in Ethernet mode andbetween 5 to 10 minutes in RS232 mode) a long beep is emitted to signal that theupgrade has been completed successfully and the CMOTDR reboots using thenew software.• The software release number can be checked using the query “ *IDN ? ” on

the remote channel.

Note If a problem occurs during the upgrade, the CMOTDR emits 5 burts of 3 beeps, displays the errors on the VGA monitor and reboots. The release procedure will then have to be repeated from the beginning.


Chapter

3
3Front controls and connectors
This chapter describes

❏ the front panel of the CMOTDR (connectors, LEDs, button and fuse)

❏ the use of the Keyboard and of the VGA monitor.

Front panel

CMOTDR Front View

EXTERNAL RESET

Mini-DIN Connector for a keyboard

POWER on / off via this FUSE

Removable OTDR module

LED Acq On

Serial InterfaceRJ 45 connector

DB15 connector for a VGA monitor

Reset Push button of the unit

INPUT POWER

LED Ethernet

LED power on

LED Selftest

LED RS232


Front controls and connectors OTU-9100

Led IndicatorsThere are five status indicators on the front of the CMOTDR:

Note You can never have both Eth. and RS232 leds illuminated at the same time.

VGA connectorPossible connection to a VGA monitor for configuration, maintenance andmanufacturing test. See "Use of the keyboard and of the VGA monitor" on page3-4.

OTDR moduleOne single module can be plugged in. The module can easily be disconnected and removed from the chassis for localcalibration, repair or replacement (see "Installation and removal of the module"on page 2-1).

Reset pushbuttonThis pushbutton provides a hard reset of the unit.

Remote control portsThe following connectors are available:

Ethernet

Connector RJ45 for optional remote operation via Ethernet.

Serial port (RS 232)

Connector RJ45 + adapter RJ45/DB9 (see "Accessories" on page 6-6). In the case of a connection to a computer (PC for example) which also has a DTEbehavior, use a cord inverting pins 2 and 3, 4 and 5, 8 and 9.

Led Indicators Color Definition

Selftest Green Illuminated upon completion of self test diagnostics when successful

Power Green Indicates that power is supplied to the unit.

Acq. On Green Illuminated when an acquisition is in progress

Eth. Green Indicates ethernet mode for serial port command execution

RS232 Green Indicates RS232 mode for serial port command execution


OTU-9100 Front panel

External terminal strips

External Reset

Processor reset function via a 3 pointplug connector (dry contacts):

To reset an external dry contact mustclose pin 1 and 2 for at least 1000 ms.Current from pin1 to pin 2 < 1 mA.

Main input power

❏ One plug connector (3 points) for main input power 12 V DC:

❏ A chassis (frame) ground connection on a plug-in screw type terminal strip.

❏ A replaceable fuse on the front of the unit. Power connection and disconnection via the removable fuse or the bay fuse panel.

Important Although the CMOTDR units contain differential input mode EMI filtering, the power supply system using these units will require additional EMI filtering to enable the system to meet relevant EMI standards (only for conducted emissions, not for other parameters like susceptibility or radiated emissions).

Suggested filter

RJ45 pin Function Input ou Output1 DCD →2 RxD ←3 GND4 DTR ←5 TxD →6 CTS ←7 RTS →8 DSR →

1 2 3

1 : external dry contact2 : external dry contact3 : not connected

1 2 3

EXT RST

1 2 3

1 : Return 12 V2 : Chassis ground3 : + 12 V

INPUT POWER

12 V

+

- 2 x 10 mH

CMOTDR

+12 V

return 12 V

100nF



Use of the keyboard and of the VGA monitor

Connection and setting for manual operationTo operate manually :• Connect the VGA monitor (SVGA monitor is better) to the VGA output.• Connect the external keyboard to the Mini Din connector (PS/2 compatible).• Now the CMOTDR can operate like an OTDR.Refer to the MTS manual to use the CMOTDR manually, taking into account theequivalence given in the following table.

Notes Even with an external keyboard and a VGA monitor connected, the CMOTDR can be operated remotely.

The OTDR traces corresponding to the measurements in progress activated remotely are displayed on the screen as well as error mes-sages.

This function is useful for maintenance (like software release via RJ45 connector) and for system software debugging ( syntax error message on remote operation ....)

Equivalence between functions and external keyboard

Editing a text from the external keyboardTo edit a title or an identification in the setup menu or a remark in the table ofresults, using the external keyboard :• Press Enter to open the edition menu.• Enter the text.• Press Enter to quit the editing menu.

The ESC key allows to quit the editing menu without recording the text.

Equivalent Function External keyboard

Help Ctrl + H

File Ctrl + F

Results Ctrl + R

Start/Stop Ctrl + S

Set-Up Ctrl + U

← ↑ → ↓ ← ↑ → ↓

Softkey 1 to 6 (from top to bottom) F1 → F6

Exit Enter

Abort Escape


OTU-9100 Use of the keyboard and of the VGA monitor

Edition of a comment in the File menu

• Move down the cursor to the Comments windows.• Press enter to open the Edition menu.• Edit the text (3 lines of 18 characters max.)• Press enter to go to the next line.• Use the ↑ and ↓ keys to go from on line to the next or the preceding.• On the third line, press enter to quit the editing menu and store the text.• Press the Esc key to quit the editing menu without storing the text.


Chapter

4
4Remote control
Remote control of the CMOTDR uses the RS232 or Ethernet interfaces.All measurement parameters are selected via the external controller. The test unitcollects raw trace data points, performs all trace measurement analysis andderives channel table information. Configuration settings allow optimization ofthe fiber analysis.English is the default language.

This chapter includes:

❏ Connection of the CMOTDR to a PC

❏ Description of the commands and queries.

❏ List of the common commands.

❏ List of the specific commands of the CMOTDR.

Connection of the CMOTDR to a PC

The CMOTDR can be remotely controlled via the RS 232-C (type DCE) interfaceof the controller.You can also use the RJ45 /RS232 female adaptor (not supplied in standardconfiguration) to connect directly the CMOTDR to the PC. Use an Ethernet directcable between the CMOTDR and the RJ45 /RS232 adaptor. Report to"Accessories" on page 6-6.

Note Use a RJ45 shielded cable with ferrite beads to avoid EMI.

Connection to the RS232 interface• Connect the serial remote controller to the RJ45 connector (RS232 DTE) of the

CMOTDR. As PCs are usually configured as DTE, an adaptor (DTE to DCE) may beneeded to connect the PC to the CMOTDR.Report to "Serial port (RS 232)" on page 3-2.

• Send the command *REM to enter remote control mode.(Send the command *LOC to return in local mode).

• If necessary modify the transmission parameters (baud rate, stop bit number, parity).Other parameters: - the terminator is CR;

- without protocol.


Remote control OTU-9100

Connection to the Ethernet Interface

Equipment delivered with the option

• Ethernet crossed cable for direct link between PC and CMOTDR.

Link with PC

The link with the PC may be direct or via a network:1. To establish a direct link, connect the Ethernet ports of the CMOTDR and PC

by means of the cross cable supplied.2. To establish a link via the network, ask the network administrator for an IP

address and connect the CMOTDR on a hub by using a direct cable supplied by the administrator (and not the crossed cable provided for the CMOTDR Ethernet option).

What to do with the PC

• Make sure that the PC has an Ethernet card whose parameters are defined (TCP/IP protocol, IP address and bridge). To access these parameters, in Windows Explorer click on the icons "Work station", then "Configuration panel", then "Network".

• Use appropriate software to dialog with the CMOTDR (Port channel: 1400).• If necessary, change the address of the CMOTDR in "Host Name".

Configuration of CMOTDR

• Start the CMOTDR and press the <Ctrl + U> keys to reach the Set Up menu and then press the <F2> key to reach the system configuration via the external keyboard.

• Select the interface E/S: FTP/Ethernet. To do this, if the interface selected is RS232, press the left arrow <- to avoid passing via the FTP/PPP position, for which you would have to wait for the protocol change.

• Configure the Ethernet interface: IP address, IP mask, IP bridge.

Note The IP address is in the following form: xxx.xxx.xxx.xxxIf one of the numbers in this address has only one or two figures, enter only this (or these) figure(s). Do not add a zero, otherwise the link will not be established.

Note To check that the connection has been made correctly, click on Start, then on Execute..., and choose: "ping" followed by the IP address of the CMOTDR.


OTU-9100 Description of commands and queries

Description of commands and queries

Command Format Remote control commands conform to the IEEE 488 (IEC 625-2) standard. Theyhave a hierarchical structure with a top level (root) and one or more lower-levels(nodes).Commands are performed by stringing together nodes.Example: ACQ:PULS P5NS• ACQ is the root• :PULS is the second level node • P5NS is the parameter of the second level node.

Command Syntax• Commands include upper and lowercase characters

- only uppercase characters are required,- lower case characters can be removed to abbreviate the commands.

• Successive nodes should be separated by a colon (:)• A space should separate the last level node from any possible associated

parameter. If there are several parameters, a comma should separate them.• Examples of command:

- complete: ACQUISITION:LASER L850- abbreviated: ACQ:LAS L850

Abbreviation of command headerGenerally, when the header has more than four characters, the following rulesare adopted:• The first four characters of the header are used, except if the fourth is a vowel.

In the latter case the vowel is dropped and only the first three characters are necessary.

Command errorsRemote control errors are saved in the event status register.• a "command error" (bit 5 of the register) is detected :

- if the command is not in the programming dictionary.- if the parameters are out of range or incorrect.

• an "execution error " (bit 4 of the register) is detected : if the instrument cannot execute the command in the given context. For example : an attempt to modification an acquisition parameter while a measurement is in process, etc.

To know the command error, either read the Standard Event Register by < *ESR?>. See "Status structure Registers" on page 4-6.



Example: ACQ for ACQUISITIONMEAS for MEASUREMENT

• If the command is made from several words, the first letter of each word is used, except for the last one (three or four first characters).Example: MSL for Measurement Slope

DSPL for Display Splice

Linking commandsSuccessive commands should be separated by a semicolon(;).

ParametersThere are several parameter types :• Numerical : decimal, signed and scientific numbers

Examples : 245, 687E2, -1.48E3, .426, 1.100E-4• Key words. Examples : OFF, ON, YES, NO• String of ASCII characters which should be enclosed within quotes

(") or (’)Example : "TRACE TITLE"

QueriesThe commands generally have an associated query. • Most of the queries have no parameters. They are terminated by ?

They are not specified in the following dictionary of the commands.Examples : SYST:UNIT? request the distance units selectedIDEN:OPER? request the identification of the operator

• For queries requiring parameters the “?” is between the last node and the first parameter. They are given in the following command dictionary. A space is required just after the “?”.Examples : FIB:K? L1310 request the K coefficient for the wavelength

1310 nmONOT? 24 request the note entered in the table for event

number 24


OTU-9100 Common commands

Common commands

Remote / Local mode (RS232 or Ethernet commands only)

Identification and option queries

Reset and reboot commands

Test command

SRQ commandsThe commands recognised by the the CMOTDR are the following:

Request to go to the remote mode.

Request to return to local mode.*LOC

*REM

*IDN?

*OPT?

request the CMOTDR identification.Response : ACTERNA, CMOTDR, n, X.YZwith: n serial number

X.YZ software version

Request options available on the CMOTDR

REBOOT Restarts the system.

*RST Reset the CMOTDR to a predefined configuration (default state)

*TST? CMOTDR’s Self test.Test result returned:0: No errors: self-test completed successfully with no errors.4: Optical module either absent or unreachable.

*STB? Device status register read request

Device Response : number from 0 to 255.

*SRE Device service request enable

*SRE is followed by a number from 0 to 63 or 128 to 191.Action : The device modifies the bits in its service requestenabling register. This instruction is associated with *SRE?.

*ESR? Device event register contents query

Device Response : number from 0 to 255.All events are cleared and the register is reset.



Status structure Registers

• Bit 0 of STB at 1 at the end of the measurement; at 0 at the next acquisition or if STATUS:ACQ? is read

• Bit 1 of STB at 1 if a warning is displayed;at 0 when a message is read by STATUS:ERROR?

*ESE Device event bit enable

* ESE is followed by a number (0 to 255)Action : Enabling register modified and ESB bit updated. Thisinstruction is associated with *ESE?

*CLS Clear status registers

Action : The device resets the status register and the eventstatus register.

End acq

Error

Execution error

Command error

0

1

2

3

4

5

6

7

0

1

2

3

4

5

6

7

Event Sta-tus Register

Status

*ESR? *STB?

*SRE*SRE?

*ESE*ESE

0

1

2

3

4

5

6

7

MSS

ESB


OTU-9100 Specific commands

Status commands

They query results from a previous command. A result field indicates if thecommand succeeded and an error code in the case of failure.

Specific commands

System setup commands

Format des commandes

Description of the functions

DATe update the CMOTDR clock (year, month, day of the month).

TIMe set the time (minutes,hours, seconds)

LANGuage select the language used in the menus (if a VGA monitor is used)

UNITs select the length unit : kilometers, kfeet or miles.

STATus ACQ?

TOP?

Response : "In-progress" or "Stopped" or "Tuning" (during calibration phase)(reported to bit 0 of STB page 4-6)

Response :Message displayed at the top of the screen (if a VGA monitor is used).

ERRor? Error message (Warning, reported to bit 1 of STB page 4-6)

Response : "In-progress" or "Stopped" CYCLE?

SYSTem DATe

TIMe

LANGuage

[1997 : 2050], [1:12], [1:31]

[0:23], [0:59], [0:59]

[FRENch, ENGlish, GERMan, SPANish, ITALian, CHINese, TAIWan, PORTugese, JAPanese, RUSSian, KORean]

UNITs [KM, KFEet, MILes] See also "Configuration OTDR" on page 4-10



Example of command

SYST:DAT 2000,1,31

Identification commands for a previous measurement This information concerns the loaded trace ("memory info" of the file menu).



TITLe Title for the measurement.

OPERator Operator name.

CABLe Identification name for the cable. The first three characters of thisname are used for the file name when automatic file naming isselected.

ORIGin Name for the origin of the fiber.

TERMin Name for the end of the fiber.

DIRection Measurement direction: O →E (origin to extremity) or E →O.

FNUMber Identification number of the fiber from 0 to 999. This number isused in the file name when automatic file naming is selected.

INCFiber Auto-increment file name function. The fiber number isautomatically incremented at each save operation. This number isalso incremented in the file name (auto mode).

IDENt TITLe

OPERator

ORIGin

TERMin

INCFiber

[«string of 16 characters»]




[YES, NO]

CABLe [«string of 16 characters»]

FNUMber [0...999]

DIRection [OE, EO]

FILEName [«string of 8 characters»]

COMMents [string of 93 characters]



FILEName Filename.

COMMents comments about the file for future reference when the file isreloaded (3 independant lines of 31 characters).

Next measurement identification commandsThis information concerns the acquired trace ("next acq. info." of the file menu).



Identical to Identification commands for a previous measurement.

NACQuisition TITLe

OPERator

ORIGin

TERMin

INCFiber





[YES, NO]

CABLe [«string of 16 characters»]

FNUMber [0...999]

DIRection [OE, EO]

FILENAME [«string of 8 characters»]

COMMents [string of 93 characters]



Configuration OTDR



LASer Sets the laser source to the appropriate wavelength supported bythe optics subsystem of the unit (depending on the moduleinstalled).

PULSe Sets the pulse width to a value supported by the optics subsystemof the unit (from 3 ns to 20 µs depending on the modules).

RANGe Sets the distance range to a value supported by the opticssubsystem of the unit (depending on the modules).

MAXTime Sets the acquisition period used for averaged acquisitions (from 5s. to 10 mn). Note: a real time acquisition will stop after 10 minutes.

RESolution Set the resolution to a value supported by the optics subsystem ofthe unit (from 8 cm to 320 m depending on the module):AUTO: The MTSe will choose the appropriate resolution. Thesecond parameter is necessary but not significant.MANU: the resolution must be given in the second parameter. Ifthe selected value is less than the min. possible value, then themin. possible value will be selected.

BEEP Choice of whether or not the end of an acquisition is signalled byan audible beep.

PROgram Autoconfiguration command for the next acquisitionMANual: the MTSe will choose the acquisition range, pulse,resolution and acquisition time specified by the operator using theabove commands.

ACQuisition

RANGe

MAXTime

PROGram

[R1, R2,…R8] for the range see page 6-6

[5 : 600]

[MANual, AUTO]

LASer [L850, L1300, L1310, L1550, L1625]

PULSe[P3NS, P5NS, P10Ns, P20Ns, P30Ns, P50Ns, P100ns, P200ns, P300ns, P500ns, P1US, P3US, P10Us, P20Us] according to module.

RESolution [AUTO, MANU].[0.0:320.0]

BEEP [ON, OFF]



AUTO: the auto-config function is enabled. The MTSe will choose theappropriate acquisition range, pulse and resolution in relation tothe acquisition time specified by ACQ:MAXTime for the fiberunder test. As soon as these acquisition parameters have beenchosen, a «final acquisition» is launched using these chosenparameters for the specified acquisition time. An automaticmeasurement is made at the end of the final acquisition.

Result commands



DSPLice Splice threshold between 0 and 601 in hundredth of dB:0: all splices displayed; 601: no splice displayedFactory default value: ALL

MEASure

MSLope

DSPLice

DREFlectance

DSLope

[TWOpoints, LINear]

[0 : 601]

[-100 : -10]

DGHOst [YES, NO]

DREMarks

DCURve

[NO, UNCertainty, NOTes, YES1]

1. NOTes and YES are equivalent

[YES, NO, GRAPhic]

[0:2001]

ENDFiber [2:15] End of fiber 2= automatic3 to 15 = threshold in dB.

LCABle [0,3] Launch cable0= not valid1 to 3 = marker 1 to 3



DREFlectance Reflectance threshold in dB, between -11 and -99.- 100: all reflectances displayed.- 10: no reflectances displayed.Factory default value: ALL

DSLope Slope threshold in thousandth of dB/km between 0 and 2001:0: every slope displayed001: no slope displayed100: slopes > 0.1 dB displayedFactory default value: >0.10 dB/km

DGHOst Choose from yes or no to display ghost information. If ghosts aredisplayed: the reflection icon is shown dotted in the result table,the reflection value is shown between parentheses on the trace;e.g. “(R:-50dB)”.Factory default value: yes.Ghosts are only detected during an automatic measurement.

MSLope Slope measurement methods: least squares (LSA) or 2-point loss.Factory default value: LSA

DCURve Measurements displayed on trace:No: the trace onlyYES: the trace with results and markersGRAPhic: the trace with markers only.Factory default value: YES

DREMarks display of notes in the table NO: no additional displayYES and NOTes: display notes entered by the userUNCertainty: display notes entered by the user and confidenceindicators for the result measurements.Factory default value: No

ENDFiber Fiber end threshold from 2 to 15. 2= automatic (factory default option)3 to 15 = threshold in dBIn most cases the AUTO option is advised.

LCABle Choose to display in the event table, the results referenced to thelaunch cable.- 0: all the results are displayed and the reference is the origin ofthe fiber.- 1, 2 or 3: results are referenced from the marker 1, 2 or 3 selected.This marker is considered as the «end of launch cable» and is thereference for loss and distance measurements.Factory default value: No.



Fiber commands



N Sets the group index of refraction of the total fiber under test from 1.30000to 1.70000.

K Backscatter coefficient from -99 dB to -50 dB in 0.1 dB steps. Modificationof K modifies the reflectance and ORL measurements.

N and K depends on the wavelength: 850 nm MM, 1300 nm MM,1310 nm SM, 1550 nm SM and 1625 nm SM.

N? Reads the group index of the fiber, for the given wavelength.

K? Reads the backscatter coefficient of the fiber, for the given wavelength.

FIBer N [L850, L1300, L1310, L1550, L1625], [1.3 : 1.7] Index of the fiber depending on the wavelength

N? [L850, L1300, L1310, L1550, L1625]

K [L850, L1300, L1310, L1550, L1625], [-99 :-50]Backscattering coefficient depending on the wavelength

K? [L850, L1300, L1310, L1550, L1625]



Reading of OTDR results commands



These commands retrieve test results in the Bellcore GR-196-CORE Issue 1, 1995Standard OTDR Record (SOR) format.OTDR? Returns the device type.

OTResult

PULSewidth?

RANGe?

LASer?

ATIMe?

DATE?

SIZE?

XOFFset?

XSCale?

YOFFset?

YSCale?

BUFFer?

CURSor

STABle?

LTABle?

RTABle? [1 : 200]

OTDR?

CVALue? [A, B]

N?

K?

[A, B], [0 : 400.000.0] m

[1: 200]

CURSor? [A, B]

OFILe? [SOR, WTK, BSOR, BWTK]



PULSewidth? Returns the pulsewidth

RANGe? Returns the range

LASer? Returns the wavelength

ATIMe? Returns the acquisition time

DATE? Returns the date

SIZE? Returns the number of points (size of the trace).

XOFFset? Returns the X axis offset

XSCale? Returns the X axis scale

YOFFSet Returns the Y-axis offset

YSCale? Returns the Y axis scale

BUFFer? Returns the buffer storing the trace (see next section for more details).

CURSor Choice of cursor A or B.

CURSor? Returns the A or B cursor position.

CVALue? Returns the result at the cursor A or B position (value in dB).

STABle? Returns the number of lines in the table

LTABle? Returns the content of a line in the tableResponse given as a string. Error message if the line does not exist.Example of response to the command: OTResult:LTABle? 30

RTABle Returns the content of a user note in the table (number of the linebetween 1 and 200). Response given as a string. Error message if the line does not exist.

N? Returns the group index used for the fiber trace.

K? Returns the backscatter coefficient used for the fiber trace.

OFILe? Returns the current trace as a file (analog to files saved using theFILE menu) in either a Bellcore or Acterna file format: SOR: BellcoreWTK: Acterna (ex.Wavetek)BSOR: Bellcore with the size of the file in front of the resultsBWTK: Acterna with the size of the file in front of the results

Splice 27953.35 0.015 0.274 3257.2 7.670Type of event

distance attenuation reflectance (if available)

slope before event

section length

Total Loss



Reading the buffer storing the trace

The current curve is stored in a buffer.Capacity of this buffer: 4 x number of points.Each point is coded using four ASCII characters on 16 bits.Command used to read the buffer: OTResult:BUFFer?

Example of response for a buffer of 2000 points:

In this example, for the first point, the y value is 217F in signed hexadecimal. Toknow the value in dB process as follows:• convert 217F in signed decimal: 8575• use the commands given below to know the coefficients A and B• value in dB with the given examples:

A*y + B = (-0.001470 x 8575) + 12.640910 = 0.036 dBIn this example, for the last point, the y value is CB00 in signed hexadecimal.Thus:• CB00 in signed decimal = -13568• the value in dB is:

A*y + B = [-0.001470 x (-13568)] + 12.640910 = 32,586 dBNumber of points in the buffer?OTRESult:SIZE?Example of response: 32000Abscissa of the first point in second?OTRESul:XOFFset?Example of response: 0.000000To convert this result from second to distance, report to "Conversion from delayto distance" on page 4-17.Time between 2 points?OTRESul:XSCale?Example of response: 6.250000e-09To convert this result from second to distance, report to "Conversion from delayto distance" on page 4-17.Coeff B of the function A*y + B?OTRESult:YOFFset?Example of response: 12.640910Coeff A of the function A*y + B?OTRESult:YSCale?Example of response: -0.001470

#6008000217F217E2180

Number of characters for the size

Size in bytes First point

2ndpoint

3rdpoint

CBFF CB00

2000thpoint



Conversion from delay to distance

To convert the result from second to meter, use the following formula:

with: c = speed of light in vacuum (2.99792458 m/s)n = refractive index of the fiber t = time (expressed in second) to convert in distance

Principal commands



STARt Starts /stops an acquisition.

FILE Calls up the file storage and management menu.

RESult Calls up the results screen for all measurement analysisoperations.

SETup Calls up the set-up menus.

HELP Calls up the on-line help pages.

UP, DOWN, LEFT, RIGHt : directional arrows ↑ , ↓ , ← , →.

HOMe re-displays the trace with no shift or zoom.

SK1, …SK6 Softkey 1 to 6 (from top to bottom of the VGA display).

BEGinacq Begins the waveform acquisition and averages waveform resultsduring the acquisition period. The unit either accepts a number ofseconds for the acquisition time or can be stopped remotely duringaveraging.

HALTacq Stops an acquisition.

D meters( )c t×2 n×-------- 10

8time s( )×∼=

KEY [STARt, FILE, RESult, SETup, HELP, UP, DOWN, LEFT, RIGHt, HOMe, PREView, SK1, SK2, …SK6, BEGinacq, HALTacq]



CMOTDR commands



VGA Validates the signal on the VGA output connector.

KEYBoard Enables the external keyboard.

FAN? Queries the status of fans (ON, OFF)

ALARm? Returns:"Yes" if the internal temperature overanges;"No" in the other case

ETH:IP Defines the IP address for remote control via Ethernet.

ETH:SUBNet Defines the Sub Net Mask.

ETH:GATEway Defines the IP address for the gateway.

To save the IP address, the following process is recommended:

• Connection with the CMOTDR (port 1400)

• Send the command *REM

• Send the consecutive commands :

CMO:ETH:IP AAA,BBB,CCC,DDD;REBOOT

AAA,BBB,CCC,DDD being the 4 bytes of the new IP address

Don’t forget : commands should be separated by a semicolon (;)

• Disconnect the CMOTDR

• Connect again the CMOTDR using the new IP address and the same port (1400).

CMO VGA

KEYB

ALARm?

ETHernet

GATEway

[OFF:ON]

[OFF:ON]

[0:255], [0:255], [0:255], [0:255]

FAN? [FAN1, FAN2]

SUBNet [0:255], [0:255], [0:255], [0:255]

IP [0:255], [0:255], [0:255], [0:255]


Chapter

5
5Maintenance
This section details the following operations for the CMOTDR:

❏ Maintenance procedure

❏ Conditions of guarantee

❏ Cleaning

❏ Battery replacement

Maintenance procedure

Maintenance work on this instrument can only be undertaken by qualified personnel using suitable equipment.

In the majority of cases, it is advisable to contact the nearest Acterna ServiceCentre, which will undertake the appropriate troubleshooting and repair work.The performance and technical complexity of the CMOTDR class this instrumentin a new generation of equipment, for which Acterna has defined a maintenancepolicy based on the modular standard replacement principle.In implementation of this policy, we have set up powerful card troubleshootingtest resources in our factories and a rapid dispatch system operating between ourfactories and branches.Only by this procedure can the high quality of the instrument continue to beensured after repair work. This procedure also has the advantage of reducingrepair cost and time.In order to ensure maximum quality and efficiency, we strongly recommendadoption of the following maintenance procedure in the event of a fault orfailure:• Verify that the instrument is plugged in.• Verify the connections of any peripheral equipment to the CMOTDR.• If a fault is detected, or if a doubt exists, it is advisable to contact the nearest

Acterna Service Centre which will undertake the appropriate repair work.

Returning an instrumentWhen returning an instrument, please indicate the following minimuminformation:• The type and serial number of the instrument• A description of the fault found with the instrument.The returned instrument will then be repaired and calibrated.


Maintenance OTU-9100

Guarantee conditionsAny exchange of boards or sub-assemblies during the instrument’s guaranteeperiod is carried out at the expense of Acterna. For any work carried out on aboard or sub-assembly other than by Acterna Service Centers, the cost of thereplacement board or sub-assembly will be invoiced.

Cleaning

Cleaning the front and rear panels and the coversThe front and rear panels, as well as the covers, can become tarnished with use.To clean them, use soapy water. Do not use products with a petroleum spirit, trichloroethylene, benzene oralcohol base, as they attack the printed markings.

Precautions governing optical connections

• The normal operating life of an optical connector is usually of the order of a few hundred manipulations. It is therefore advisable to manipulate the optical connections as rarely as possible.

• The instrument is designed to function correctly in a non - hostile environment, hence the cleanliness of the optical connectors as well as their delicate manipulation is paramount to the instrument’s measurement abilities.

• The optical connector must therefore be clean and dust-free. If the optical connection is not being used, protect the connections of CMOTDR using the covers provided.

As an example, the use of connectors that have not been cleaned will representan error of the order of 10% for all measurements. This error is added to othererrors present, for example the quality of the fiber (circularity and concentricity),the means of alignment (axis alignment, distance between fiber faces, quality offiber face) and propagation modes.

Cleaning the optical cable connector• Use a non degradable type of paper, such as Joseph paper, soaked in ethanol.• Pay particular attention to the polished face of the fiber, rubbing it in a

perpendicular motion to the fiber.

Cleaning the optical inputs or outputs of the CMOTDR• Squirt a highly flammable solvent (such as ethanol or «Trijelt») into the

connector.• Blow out the connector using a clean dry air supply from an aerosol can fitted

with an extension.


Chapter

6
6Technical Specifications
This chapter gives the specifications of the CMOTDR mainframes and of theOTDR modules:

❏ Mechanical specifications

❏ Environmental conditions

❏ Electrical specifications

❏ OTDR Measurement characteristics

❏ Optical specifications

Mechanical specifications

• Rack mounted unit capable of installation in VME, ETSI, 19 inch or 23 inches frame.

• One position for an optical plug-in module.

Dimensions

Height 40 mm (1.56 inches)

Width: 225 mm (8.78 inches)261 mm with customized attachment

Depth 165 mm (6.44 inches)

Max depth with front cables and plugs190 mm (7.41 inches)

Weight: 0.820 kg (without module)1.240 kg with a module


Technical Specifications OTU-9100

CMOTDR dimensions (without module)

Environmental conditions

Vibration

The CMOTDR is able to withstand the following vibration tests:• Complete test consists of 6 cycles for each of the 3 axes x, y, z.• One cycle sweeps:

- from 5 Hz to 15.7 Hz, amplitude 1 mm- from 15.8 Hz to 200 Hz, 10 m.s-2 (1G acceleration test) - and back down to 5 Hz with a sweep duration of one minute per octave.

Shock impact resistance

In Acterna packaging: one free fall per surface (6 falls total) of 29.5 inches onsmooth unyielding surface (concrete).

Without packaging: free fall 3.9 inches, 5 defined drops.

225.10 mm189 mm

11

9

140

mm

164.

74 m

m

Screws sticking out are not included in the dimensions : 3 mm must be added on each side.


OTU-9100 Electrical specifications

Temperature range

Operating: -5° C to + 55° C, without condensing

Storage: -40° C up to + 70° C (during 8 hours)

Humidity

95% without condensing

Electrical specifications

Input PowerTwo dependent power connections (+ 12V DC and Return) on plug-in terminalstrips:Range 12 V DC ± 10%

Current Rating 1.25 A Max.1.0 A Typical

Power Rating 15 Watts Max. (excluding surge current at power on).12 Watts Typical

Power Switch (fuse) Power connection and disconnection via the removablefuse or the bay fuse panel. A spare fuse is supplied with thebase unit.

Protection internal diodes on the 12 V side of the circuit to guardagainst incorrect polarity during installation.

Transient Current maximum transient current of 5 A at power on.

Grounding Chassis (frame) ground connection on a plug-in screw typeterminal strip to connect the chassis components to anexternal low impedance ground point in common withframe ground.

InterfacesSerial RS-232/Eth RJ45 connector

VGA DB 15 connector for connection to a VGA Monitor.

Keyboard Mini-Din connector (compatible PS/2)

Processor resetReset via push-button or via external connection on the unit.

Forced Convection CoolingFans for cooling the OTDR module.



OTDR Measurement characteristics

Distance measurement

• dual cursors• distance displayed with respect to the calibration of the fiber’s group index• group index adjustable from 1.30000 to 1.70000 in 0.00001 step• display resolution: 1 cm (0.39 inch) max• cursor resolution: 1cm (0.39 inch) max• sampling spacing: from 4 cm (1.57 inch), with up to 128 000 acquisition data

points

• accuracy: ±1 m ± 10-5x distance ± sampling resolution (excluding group index uncertainties)

Attenuation measurement

• dual cursors• display resolution: 0.001 dB• cursor resolution: 0.01 dB• accuracy: ± 0.05 dB / dB ± 0.05 dB

Reflectance measurement

• display resolution: 0.01 dB• accuracy: ± 4 dB

Automatic measurement

• Automatic measurement of all signal characteristics. Slope measurement by linear regression or 2 points measurements.

• Thresholds for fault display:0 to 5.99 dB in 0.01 dB steps for event threshold-11 to -99 dB in 1 dB steps for reflectance0 to 1.99 dB/km in 0.001 dB/km steps for slope

• Display of fiber segment slope and attenuation• Display of position and loss• Display of reflectance• Display of ORL

Manual measurement

• measurement of slope between the cursors• measurement of the loss between two fiber sections• measurement of the reflectance of a reflective event• measurement of the Optical Return Loss between the two cursors.• measurement of a splice either by 2 point or 5 point method


OTU-9100 Specifications of the modules

Specifications of the modules

Wavelength and pulsewidthTypical values, measured at 25°C, unless otherwise stated.

Laser class applicable to the modules

5026 HD5024 HD/FPa

a. This module includes an in-line filter passing 1310nm and blocking 1500 to 1635nm.This filter allows to make OTDR trace acquisition without degradation when1550 nmoptical signal (- 20 dBm) is inputed.

5027 HD 5027 VHDModules 5024 HD 5025 HD

Wavelengthb

b. Measured at 10 µs

1310 ± 20 nm

1550± 20 nm

1310 ± 20 nm

1625 ± 10 nm

1625 ± 20 nm

RMSc

c. Corresponding to the one-way difference (in dB) between the extrapolatedbackscattering level, at the start of the fiber and the RMS noise level, after 3 minutesaveraging.

42 / 40dB 41 dB 40 dB 44 dB

Distance range up to 380 km

Pulsewidth 10 ns to 20 µs

Dead zone at 10 ns- Event dead zone d

- Attenuation dead zone e

d. Measured at 1,5 dB down from the peak of an unsaturated reflective event.e. Measured at ± 0.5 dB from the linear regression on a reflectance type FC/PC.

4 m15 m

6m20 m

Modules Referencestandard

EN 60825-1, Edition 1.2, 2001-08

FDA21CFR§1040.10

OTDR Singlemode HD- at 1310 nm- at 1550 nm

Class 1MClass 1

Class 1Class 1

OTDR Singlemode VHD at 1625 nm Class 1 Class 1



Ranges for HD modules

Ranges for 5027 VHD modules

Accessories

• The User manual • A Spare Fuse ref. 220002502• A power supply connector ref. 214424031

10 ns 30 ns 100 ns 300 ns 1 µs 3 µs 10 µs 20 µs

R1 5 km (16 kft) x x x x

R2 10 km (33 kft) x x x x x

R3 20 km (65 kft) x x x x x x

R4 40 km (131kft) x x x x x x x x


R6 140km (459kft) x x x x x x x

R7 260km (853kft) x x x x

R8 380 km x x

10 ns 30 ns 100 ns 300 ns 1 µs 3 µs 10 µs 20 µs

R1 5 km (16 kft) x x x x

R2 10 km (33 kft) x x x x x

R3 20 km (65 kft) x x x x x x



R6 140km (459kft) x x x x x x x

R7 260km (853kft) x x x x x

R8 380 km x x x


Chapter

7
75024 HD/FP OTDR module
Mechanical specifications

Dimensions

Height 32 mm

Front panel width: 124 mm

Overall depth 160 mm (including connector and screws)

Module dimensions (connectors and screws not included)

5024 HD/FP OTDR module in the CMOTDR

32 mm

124 mm

144 mm


5024 HD/FP OTDR module OTU-9100

CMOTDR dimensions (with 5024 HD/FP module)

225.10 mm188 mm

11

9

140

mm

164.

74 m

m

Screws sticking out are not included in the dimensions : 3 mm must be added on each side.

10 mm

LC/PC type connector

Pigtail length with connector: 1000 ± 10 mm


apostila

Documents

safety of laser products

otdr singlemode hd

laser class applicable

nm class

otdr singlemode vhd

laser safetythe provisions

acternathe information

user manualacterna otu