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OTF-920 Operation Manual

(5)(6) Attenuation / Wavelength Selector Key and Indicator LED (Option)

Toggles the Wavelength Display (1) between display of attenuation and wavelength. This is used

only when the attenuator option is fitted. The indicator LED shows which parameter has been

selected.

(7) Optical Power Unit Selector Key

Toggles the optical power measurement unit between mW and dBm.

(8)(9) Up / Down Arrow Key

Increments / decrements value of selected digit by one unit.

(10) Cursor Key

Allows digit selection when using Up / Down Arrow Keys to set value.

(11 ) Numeric Keypad

Allows direct input of parameters in setting modes.

(12) Clear Key (CL)

Clears values when setting.

(13) Backspace Key (BS)

Moves cursor back one space when entering parameter using numeric keypad.

(14) Enter Key (ENT)

Registers the value entered via either Up / Down Arrow Keys or Numeric Keypad.

(15) Optical Output Connector

The optical output connector is located behind a safety cover. The cover pulls down for use.

(16) Optical Input Connector

The optical input connector is located behind a safety cover. The cover pulls down for use.

(17) GPIB Local Key / GPIB Address Change Key (LOCAL)

a. Pressing this key when GPIB remote operation is active returns control to the front panel.

b. Pressing this key after pressing the SHIFT Key (22) enables the GPIB address and delimiter to be

changed. The GPIB address is first displayed in the Optical Power Display Panel (2) and can be

changed using the Up / Down Arrow Keys (8)(9). Pressing the GPIB Local Key a second time

displays the GPIB delimiter which can be similarly changed using the Up / Down Arrow Keys.

Pressing the GPIB Local Key a third time returns control to normal operation.

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

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Содержание OTF-920

Страница 1: ...xcess underutilized and idle equipment along with credit for buybacks and trade ins Custom engineering so your equipment works exactly as you specify Critical and expedited services Leasing Rentals Demos In stock Ready to ship TAR certified secure asset solutions Expert team I Trust guarantee I 100 satisfaction All trademarks brand names and brands appearing herein are the property of their respec...

Страница 2: ...OTF 920 Optical Tunable Filter Operation Manual Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...

Страница 3: ... for errors contained herein or for incidental or consequential damages in connection with the use of this material Copyright 2000 Santec Corporation Japan No part of this document may be reproduced stored in a retrieval system or transmitted in any form or by any means electronic mechanical photocopying recording or otherwise without the prior written permission of Santec Corporation Japan Artisa...

Страница 4: ...pment to indicate safety related information DANGER CAUTION Packing Materials The original packing materials are required to ensure the safe long term storage and safe transportation of this equipment It is recommended that all packing materials are kept for these purposes This indicates a dangerous procedure that could result in serious injury or death if not performed properly This mark is used ...

Страница 5: ...wer Control 3 5 Wavelength Calibration 4 Principle of Operation 4 1 Wavelength Tuning Setting 4 2 Peak Search Function 4 3 Wavelength Calibration 5 Panel Descriptions 5 1 Front Panel 5 2 Rear Panel 6 Safety Information 6 1 Mains Voltage 6 2 Installation 6 3 Safe Operation Contents Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...

Страница 6: ...2 Performing a Scan 7 7 Optical Power Control Option 7 7 1 Automatic Power Control APC 7 7 2 APC Control Range Setting 7 7 3 Attenuation Setting 7 8 Changing Display Units 7 9 Wavelength Offset Calibration 7 10 Storing Wavelength Offset Parameter Settings 7 11 Resetting Factory Defaults 8 Communication Interfaces 8 1 GPIB Control 8 2 RS 232C Control 8 3 Control Commands 9 Example Programs 9 1 GPIB...

Страница 7: ...Care and Maintenance 10 1 Care 10 2 Maintenance 10 3 Cleaning the Optical Connectors 10 4 Changing the Fuse 11 Troubleshooting 12 Warranty Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...

Страница 8: ... provides a 40nm tuning range and can be configured with either a filter element or a variable attenuator A combination of the two sliders can thus provide continuous tuning over a full 80nm 40nm tuning but with two separate bandwidths or simultaneous control of wavelength and power using a combination of filter element and attenuator in the sliders The OTF 920 boasts a very flexible peak search f...

Страница 9: ...1 2 OTF 920 Operation Manual Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...

Страница 10: ... Min Typ Max Filter Type Filter in Slider 1 Filter in Slider 2 Wavelength Range nm 1530 1610 Insertion Loss dB 2 5 3 0 Bandwidth at 3dB nm 0 9 1 0 1 1 Bandwidth at 20dB nm 4 5 PDL dB 0 1 0 2 PMD ps 0 1 Return Loss dB 45 50 Max Optical Input Power dBm 20 Operating Temperature C 20 30 Fiber Type Connector Type Communication Interface Size mm Weight kg Supply Voltage V Maximum Power W 40 100 110 230 ...

Страница 11: ...2 2 OTF 920 Operation Manual Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...

Страница 12: ...ntaining the high resolution and accuracy 3 2 Peak Search Function 3 1 Wavelength Range The OTF 920 contains two sliders in which the optical filter elements or variable attenuator elements are mounted The OTF 920 can thus be supplied in a variety of configurations Please note that it is not usually possible to change the configuration after manufacture Each slider has a tuning range of 40nm for a...

Страница 13: ...nd provides automatic power control of the output signal The OTF 920 is calibrated in the factory and should not usually require adjustment The wavelength calibration feature enables a user to recalibrate the unit should this become necessary An adjustment of up to 1 0nm is possible If the device requires an adjustment greater than this there may be a more serious problem and we recommend that you...

Страница 14: ...al sliders The figure above shows a schematic diagram of this design A tunable filter element with a tuning range of 40nm or a variable attenuator element with 20dB attenuation can be mounted on each slider Using tunable filters on both sliders a tuning range of 80nm can thus achieved The sliders are automatically controlled to provide seemless wavelength tuning or simultaneous wavelength tuning a...

Страница 15: ...OTF 920 Operation Manual 4 2 Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...

Страница 16: ...avelength setting shown in the Wavelength Display Panel 1 Note When the attenuator option is fitted and the unit is operated in APC mode the display will show the target value for automatic power control when the PS key 28 is pressed 3 Optical Power Unit Indicator Indicates unit of optical output power mW or dBm 4 Wavelength Unit Indicator Indicates units of displayed wavelength nm 1 2 3 4 5 6 7 8...

Страница 17: ...rs the value entered via either Up Down Arrow Keys or Numeric Keypad 15 Optical Output Connector The optical output connector is located behind a safety cover The cover pulls down for use 16 Optical Input Connector The optical input connector is located behind a safety cover The cover pulls down for use 17 GPIB Local Key GPIB Address Change Key LOCAL a Pressing this key when GPIB remote operation ...

Страница 18: ... scan range for Peak Search function c Shift APC Sets optical power range for APC control option 23 24 Option Key with Indicator LED Enables optional features such as independent slider control of the OTF 920 to be operated The indicator LED lights when the Option Key is pressed and remains lit until a valid function key is pressed or until the Option Key is pressed a second time Pressing the Opti...

Страница 19: ...ace SIF Connector Used for RS 232C communication 30 Power On Off Key Switch Operated using the power switch key this is used to switch the unit on and off Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...

Страница 20: ...g the mains voltage indicator so that the correct voltage corresponding to the mains supply voltage is shown in the window when the fuse housing cover is replaced Ensure that the housing cover is tightly closed before reconnecting the mains cord 4 Analogue Interface AIF Connector not used 1 2 3 4 5 6 7 Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...

Страница 21: ... the OTF 920 unit to ensure proper ventilation and cooling 6 GPIB Connector 7 Serial Number Label Indicates model number serial number and options installed on each unit 100V ac remove drum before turn 100V ac 120V ac 230V ac Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...

Страница 22: ...nit is provided with a three pin cord To ensure the safe operation of the instrument please make sure that this is connected to a grounded power outlet 6 2 Installation To ensure the safe operation of the instrument it should not be installed In a position where the air from the cooling fan cannot flow freely Allow at least 5cm behind the unit for this purpose Where there are high levels of vibrat...

Страница 23: ...and the mains power turned off at the outlet Also please note that if the unit is moved from a cool location to a warm location there is a possibility that condensation may form on the inside of the instrument In these circumstances allow sufficient time for the instrument to dry thoroughly before connecting the mains power DANGER There is a danger of serious injury or death from electric shock if...

Страница 24: ...s to the local mains voltage and plug the power cord into the socket If the correct voltage is not displayed see Section 5 2 and select the appropriate voltage Connecting an incorrect voltage will cause damage to the unit The main Power On switch is a key switch located on the front panel Insert the key and rotate clockwise 90 degrees to switch the unit on The key can only be inserted or removed w...

Страница 25: ...ssing and holding the CL or BS keys when the power is turned on Once set the delimiter setting is retained even when power to the unit is turned off The action of each key when pressed at Power On is indicated below The OTF 920 unit is turned off using the main Power On Off switch located on the front panel Rotate the key anti clockwise 90 degrees to switch the unit off The key can only be removed...

Страница 26: ...rs are used there is the possibility that the connectors may be damaged by scorching Before connecting the input light check that the optical power does not exceed the maximum specified level for the OTF 920 The maximum level is 20dBm If the optical input exceeds this limit there is a risk of damage to the OTF 920 s internal optical elements Open the cover of the optical input connector and connec...

Страница 27: ...s the intended value to be set always remember to press the ENT key If the ENT key is pressed before all digits have been entered the remaining digits will be entered as zeros The CL key will clear the current display during numeric keypad entry This is particular useful when an entry error has been made and allows re entry of all digits The BS key will move the cursor position back one digit This...

Страница 28: ...it as required and the Cursor Key is used to step through individual digits When all digits have been set the numeric value shown on the display is saved to the OTF 920 s memory by pressing the enter ENT key After checking the numeric value displayed is the intended value to be set always remember to press the ENT key When setting some parameters the display will continue to flash for a few second...

Страница 29: ...y set value 3 Press the enter ENT key to save the displayed value to memory and initiate a change in the wavelength setting 7 5 Independent Slider Control Option The OTF 920 contains two sliders in which optical filters can be mounted When both sliders contain filters which operate over the same wavelength range it is useful to be able to control each slider independently and also to add a wavelen...

Страница 30: ...oved SO Slider 1 Active Slider 2 Active 2 Press the numeric keys 1 or 2 to toggle the respective sliders between Removed and Active 3 Press the CAL Key to register the selection and remove or activate the sliders To cancel the operation without changing the slider selection press the Attenuation Wavelength Selector Key 7 6 Peak Search The Peak Search function operates by scanning through a range o...

Страница 31: ...en using the Numeric Keypad the first digit entered is the 100 s unit for the wavelength in nm To set for example a shorter scan range of 5nm enter 005 000 Remember to press the enter ENT key to register the value The Shift function will remain active 4 To continue the setting procedure press the Peak Search PS Key twice The LED immediately above the PS Key will light again and the Wavelength Disp...

Страница 32: ...ntain constant output power at the target value within the limits set by the APC Control Range When APC is active it is not possible to set the attenuation manually APC is activated by pressing the APC Key when active the LED above the key is lit When APC mode is active the setting of the optical output power can be made as indicated below Note when APC is switched on the target value automaticall...

Страница 33: ...Control Range to prevent instability When no value is entered the default value is 0 1dB 1 Check that the Wavelength Power Indicator LED is indicating Power If not press the Wavelength Power Selector Key to toggle from the Wavelength setting 2 Press the Shift Key The LED immediately above the Shift Key will light indicating the Shift function is active While the Shift function is active press the ...

Страница 34: ...nge 1 Check that the Wavelength Power Indicator LED is indicating Power If not press the Wavelength Power Selector Key to toggle from the Wavelength setting The current setting for the attenuator will be displayed in the Power Display Panel 2 Enter the required value in units of dB using either the Numeric Keypad or the Up Down Arrow keys The value entered must be in the range 0 to 20dB and has th...

Страница 35: ...avelength for this position of the filter using either the Numerical Keypad or the Up Down Arrow keys To cancel the input press the Wavelength Power Selector Key and the display will return to its currently set value 3 Press the enter ENT key to save the displayed value set the Wavelength Offset and return to normal operating mode If a wavelength has been entered such that the Wavelength Offset is...

Страница 36: ...fset Parameter Settings Data set using the Wavelength Offset described in Section 7 10 above is only saved in RAM and is not stored when the power to the OTF 920 is turned off or when the unit is reset To permanently store the offset data to memory follow the procedure below This procedure stores the following parameters Wavelength Offset APC target power option and APC Control Range option 1 Pres...

Страница 37: ...7 14 OTF 920 Operation Manual Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...

Страница 38: ...t the Address Setting Mode without changing the address press the Local key twice in succession To change the GPIB Address type in the required value using the number keypad The address is saved by pressing the Local key twice in succession When GPIB remote control is active the Remote LED on the front panel will be lit Control is returned to the front panel by pressing the Local key on the front ...

Страница 39: ...he OTF 920 should be connected to the receive terminal of the external device e g computer The RRDX receive terminal of the OTF 920 should be connected to the transmit terminal of the external device Please ensure that the handshake line on the external device is closed The terminals for the SIF interface Hirose Electric HR10 7P 6S are listed below 1 N C Not used Do not connect 2 N C Not used Do n...

Страница 40: ... In RS 232C communication echo back is used to verify correct communications 1 Command Description Format Sets output variable to indicate wavelength WA Sets wavelength to a specific value nm WA xxxx xxx Sets output variable to indicate current wavelength offset CW Sets wavelength offset to a specific value nm CW xxxx xx Sets output variable to shorter scan range for PS function WS Sets shorter sc...

Страница 41: ...er to be active Slider number entered as suffix 1 or 2 SE x SD Sets slider to be fixed Slider number entered as suffix 1 or 2 SD x SF Removes slider from beam Slider number entered as a suffix 1 or 2 SF x SO Returns slider from removed state Slider number entered as a suffix 1 or 2 SO x DO Sets value of offset between sliders nm DO xx xxx RE Initiates reset of OTF 920 unit RE SU Sets output variab...

Страница 42: ...moved frombeam 6 Slider 1 is set at given wavelength slider 2 is being removed from beam 7 Wavelength is being tuned whilst other slider is removed from beam 2 nd digit 0 Peak search function is not active 1 Peak search function is active 2 Peak search function is set to rapid mode 3 Rapid peak search function is in rapid mode and active 3 rd digit 0 Normal operation 1 Indicates out of control ran...

Страница 43: ... 3 rd digit 1 Slider 1 is removed see SO command Section 7 5 3 Slider 1 is moving to removed state see SO command Section 7 5 4 Slider 1 is moving from removed state see SO command Section 7 5 4 th digit 0 Slider 2 is stationary 1 Slider 2 is moving 5 th digit 0 Slider 2 is fixed see SL command Section 7 5 1 Slider 2 is active see SL command Section 7 5 6 th digit 1 Slider 2 is removed see SO comm...

Страница 44: ...otf920 Open and initialise device Call ibln otf920 1 0 otf920a Check for device presence error checking gpib_dl Chr 13 Chr 10 Set Cr Lf as delimitter Set Wavelength Subroutine Comment ans InputBox Required Wavelength nm Ask user for required wavelength value Call ibwrt otf920 WA ans gpib_dl Set wavelength to value defined by user input End Sub End subroutine The following program provides an examp...

Страница 45: ...g Initialise Device Comment Call SendIFC 0 Initialise GPIB interface Call ibdev 0 1 0 T10s 0 0 otf920 Open and initialise device Call ibln otf920 1 0 otf920a Check for device presence error checking gpib_dl Chr 13 Chr 10 Set Cr Lf as delimitter Read Power Comment Call ibwrt otf920 OP gpib_dl Set output variable to output power in dBm Call ibrd otf920 Status_dBm Read set output variable MsgBox Powe...

Страница 46: ... 30 Set Wavelength Subroutine Comment ans InputBox Required Wavelength nm Ask user for required wavelength value Form1 MSComm1 PortOpen True Open Port MSComm1 in Form1 of program Form1 MSComm1 Output WA ans Chr HD Send value of wavelength to Com port with CR delimiter Form1 MSComm1 PortOpen False Close Port MSComm1 in Form1 End Sub End Subroutine READ POWER dBm ROUTINE Subroutine description Priva...

Страница 47: ... 1 To 1000000 Delay to wait for echo back Next I ans Form1 MSComm1 Input Read data from MSComm1 port MsgBox Power ans Output read data to screen Form1 MSComm1 PortOpen False Close communication port End Sub End subroutine Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...

Страница 48: ... into the unit and do not operate the unit within such an environment Do not apply a voltage exceeding that indicated in the specifications 10 1 Care 10 2 Maintenance Occasional cleaning of the exterior surfaces of the unit may be required Please do not use chemical cleaning agents In particular avoid chemicals that contain benzene toluene xylene acetone or similar solvents A dry or slightly damp ...

Страница 49: ...nector adapters as shown in the diagram above 2 Pull each of the connector adapters forward to remove them from the OTF 920 unit 3 Carefully clean the surface of the protruding optical connectors using a soft lint free cloth moistened with alcohol Do not press unnecessarily on the end of the connector as this will cause it to become detached from its socket 4 Carefully replace the connector adapte...

Страница 50: ...instrument and open the cover of the fuse housing using a small screwdriver Note the direction of the arrows on the end of each fuse holder The fuse holders can then be removed by pulling from the housing When replacing the fuse holders into the housing ensure that the direction of the arrows on the end of the fuse holder corresponds with the marking on the housing cover Also ensure that the housi...

Страница 51: ... always disconnect the power cord from the power outlet 100V ac remove drum before turn 100V ac 120V ac 230V ac Fuse Housing Anti Surge Fuse Fuse Holder Fuse Housing Cover Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...

Страница 52: ...emote LED is lit press local key to release the GPIB remote mode Note this function will not work if the Front Panel lockout command has been issued via GPIB Wavelength of input light is different from wavelength setting of filter Set wavelength or use peak search to scan for wavelength peak Attenuation is set too high Reduce the attenuation setting or set the unit to APC mode with appropriate set...

Страница 53: ...11 2 OTF 920 Operation Manual Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...

Страница 54: ...warranty VOID Santec will not be responsible for the product when the seals have been broken or damaged This warranty is effective only for the original purchaser of this product and is NOT transferable All other expressed warranties are disclaimed and all implied warranties for this product including the warranties of merchantability and fitness for a particular purpose are limited in duration to...

Страница 55: ...12 2 OTF 920 Operation Manual Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...

Страница 56: ...quipment Have surplus equipment taking up shelf space We ll give it a new home Learn more Visit us at artisantg com for more info on price quotes drivers technical specifications manuals and documentation Artisan Scientific Corporation dba Artisan Technology Group is not an affiliate representative or authorized distributor for any manufacturer listed herein We re here to make your life easier How...

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