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Santec ECL-210 Operation Manual

External cavity tunable ld light source
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Santec ECL-210 Operation Manual

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  • Page 1 Artisan Technology Group is your source for quality new and certified-used/pre-owned equipment SERVICE CENTER REPAIRS WE BUY USED EQUIPMENT • FAST SHIPPING AND DELIVERY Experienced engineers and technicians on staff Sell your excess, underutilized, and idle used equipment at our full-service, in-house repair center We also offer credit for buy-backs and trade-ins •...
  • Page 2 EXTERNAL CAVITY TUNABLE LD LIGHT SOURCE ECL-210 Operation Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 3 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.

  • Page 4: About This Manual

    ECL-210 About This Manual This manual explains the operation and safety features of the ECL-210 External Cavity Tunable LD Light Source. To ensure the safe operation of the instrument, and to prevent the risk of personal injury and/or damage to the equipment we recommend that you read the manual fully before commencing installation and operation.

  • Page 5: Table Of Contents

    ECL-210 Operation Manual Table of Contents About this Manual 1. Introduction 2. Specifications 2.1. ECL-210 Standard Specification 2.2. MLS-2100 Standard Specification 2.3. MLS-8100 Standard Specification 3. Features 3.1. Tuning Wavelength 3.2. Coherence Control 3.3. LD Injection Current, Control of Circumstance Temperature 3.4.
  • Page 6 EXTERNAL CAVITY TUNABLE LD LIGHT SOURCE ECL-210 7. Operation Procedures 7.1. Contents of Fundamental Operation 7.2. Turning Power On 7.3. Optical Fiber Connection 7.4. Selecting Units in MLS 7.5. MLS MODE 7.6. MLS Matrix LED 7.7. Shuttle Switch 7.8. Driving LD and Shutting LD Off 7.9.
  • Page 7 ECL-210 Operation Manual 10. Care and Maintenance 10.1. Care 10.2. Maintenance 10.3. Cleaning the Optical Connectors 10.4. Changing the Fuse 11. Option 12. Troubleshooting 13. Warranty Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 8: Introduction

    Used as a stand-alone unit or as part of a larger test system, the ECL-210 is the excellent choice as a tunable light source to use in optical research and development, inspection, production testing.
  • Page 9 ECL-210 Operation Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 10: Specifications

    EXTERNAL CAVITY TUNABLE LD LIGHT SOURCE ECL-210 Specifications 2-1 ECL-210 standard specification Specification parameter Unit Min. Spec. Max. Note Wavelength Tuning range 1530 1610 Minimum tuning Resolution 0.024 <0.001nm When using fine tuning Accuracy Number of times of measurement n=50, Measured at center Repeatability 0.01...
  • Page 11 AO(Elleptical center): ≤50µm / Key error: -0.5~0.5º NOTE The warranty for ECL-210 is one year. We recommend to have ECL-210 inspected and calibrated regularly ( once a year recommended). Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 12: Mls-2100 Standard Specification

    EXTERNAL CAVITY TUNABLE LD LIGHT SOURCE ECL-210 2-2 MLS-2100 standard specification Item Unit Min. Standard Max. Remarks Slot I / F GP-IB Voltage Switch type Frequency Max. Power 2 Units Dimentions 230X412X88 WXDXH Weight Without Units Options Black cover panel...
  • Page 13 ECL-210 OPERATION MANUAL Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 14: Features

    3-2 Coherence Control The oscillated spectrum linewidth of the ECL-210 is fairly narrow in comparison with normal semiconductor lasers. Spectrum linewidth is one of the factors that determines light coherence, and the narrower the spectrum linewidth, the more improved the coherence.

  • Page 15: Ld Injection Current, Control Of Circumstance Temperature

    ECL-210 OPERATION MANUAL 0.03dB (p-p) 46.5MHz 326.0 with Coherence 306.0 Control 286.0 100sec. 326.0 306.0 286.0 600sec. FREQUENCY [Hz] The measurement example of optical power stability and spectrum line width are shown below. Those are when connecting optical fiber type 3dB coupler to ECL output terminal. The open...

  • Page 16: Precise Optical Power Control

    Water molecule absorbs light in 1300nm~1500nm and the output power decreases when measuring with optical spectrum analyzer. It is impossible to avoid it because it is a physical phenomemon. We recommend to use ECL-210 in the condition with the extremely low humidity or avoid the water absorption points.

  • Page 17: Built-In Attenuator

    ECL-210 OPERATION MANUAL 3-4-3. ACC Mode In ACC mode, ECL controls with set current in advance. It is possible to stabilize optical power by adding the feedback signals from external optical power criteria into low frequency modulation terminal. Note that optical power may fluctuate extremely depending on external modulation signal input.
  • Page 18 EXTERNAL CAVITY TUNABLE LD LIGHT SOURCE ECL-210 3-5-2. Features and Principle Structure The feature is the ability to reduce the optical output power loss from installing a variable attenuator in the optical test set-up. By including an internal ATT, variable attenuation is real- ized with a minimum of optical power loss when compared with an external attenuator set-up.

  • Page 19: Fine Wavelength Tuning Control

    ECL-210 OPERATION MANUAL 3-6 Fine Wavelength Tuning Control ECL controls OBPF and FLF independently against wavelength input. When some compensa- tion is required after wavelength stable, it is possible to control only FLF independently. 3-7 Plug & Play On the usual system, when units are required to be exchanged or to be added, the stable system must be down, and be exchanged or added, then, the system must be start up.

  • Page 20: Principle Of Operation

    SPC. FC-APC connector, SC connector and polarization maintaining fiber out- put are available as options. The oscillation wavelength of ECL-210 is controlled by OBPF and FLF individually. The merit of ECL-210 is these two independent components controlled. Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 21 ECL-210 Operation Manual The two components in selecting wavelength are to be controlled individually, and OBPF re- quires linear control in whole tuning wavelength range, and FLF requires periodical control. The oscillation wavelength depends on the rough tuning wavelength by OBPF and more accurate tuning wavelength by FLF.

  • Page 22: The Unit Principle Of Operation

    EXTERNAL CAVITY TUNABLE LD LIGHT SOURCE ECL-210 4.2. The Unit Principle of Operation MLS-8100 RS-232C ch B ch C ch D ch E ch F ch G ch H ch A FIG.2. Structure of the MLS-8100 FIG.2 shows the structure of MLS-8100 This system is composed of External Cavity Tunable LD Module (ECL) and Multi-Channel Light Source Rack (MLS).
  • Page 23 ECL-210 Operation Manual In this way, it is easy to select each unit, set each parameter and monitor those by communication control from the direct control from MLS or the external communication systems. The param- eters changed from MLS can be memorized in each unit by [STORE] key. (ref. 7.15. )

  • Page 24: Panel Descriptions

    EXTERNAL CAVITY TUNABLE LD LIGHT SOURCE ECL-210 Panel Descriptions 5.1. Front Panel (3) (4) (24)(23)(27) (17) (5) (14) (6,7)(8) (10) (22) (26) (25) (21)(16) (20) (18,19) (15)(13)(12)(11) Front Panel MLS-8100 (24)(23) (27)(17) (15)(5) (6,7) (25) (10) (21) (26) (16) (20)
  • Page 25 ECL-210 Operation Manual (1) Light source unit insertion slot Each unit or blank cover is loaded on. (2) Fixing screw hole This is a hole for fixing each unit or blank cover. (3) Blank cover Insert the blank cover to an empty slot. If the blank cover is not inserted, the system may not work stably for heat generated.
  • Page 26 This indicates that the system is in remote status by GP-IB. (12) STORE key Pressing this switch causes each parameter setting value of the current ECL-210 to be memorized in the internal memory. When the unit is turned OFF once and then turned ON, the unit starts under the conditions memorized previously in the memory.
  • Page 27 This mark indicates the possibilities of danger by LASER. Do not look into the beam directly. (27) Inscription panel The model #, options, and serial # of ECL-210 are mentioned on this. Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 28: Rear Panel

    EXTERNAL CAVITY TUNABLE LD LIGHT SOURCE ECL-210 5.2. Rear Panel (3) (5) Rear Panel MLS-8100 (7) (3) (4) (5) Rear Panel MLS-2100 (1) GP-IB connector (Refer to 8.1. GPIB) (2) Fan The fan shapes of MLS-8100 and MLS-2100 are different. The function is same. Arrange space of over 5cm to allow for proper ventilation.
  • Page 29 ECL-210 Operation Manual (5) Power Voltage Display Panel The display panel and the rotary switch for changing power supply voltage are unified. It enables voltage change to open the lid and rotate the rotary switch with pressing it. If a differ- ent power voltage is used, make sure the rotary switch is set properly and the correct fuse is used.
  • Page 30 EXTERNAL CAVITY TUNABLE LD LIGHT SOURCE ECL-210 (6) Fuse Box Firstly, after changing and making sure the fuse, open the lid of power voltage display panel and pull out the fuse box. And the fuse box is inserted with the arrow direction. Use the anti- surge type fuse.

  • Page 31: Bottompanel

    ECL-210 Operation Manual 5.3. BottomPanel Bottom panel Bottom panel (1) Slit Slit for heat dissipation. Cooling air comes into inside of the slit. Do not cover the slit or put heat generator near the slit. This may cause incorrect movement and damage because of the system heat.

  • Page 32: Side Panel

    EXTERNAL CAVITY TUNABLE LD LIGHT SOURCE ECL-210 5.4. Side Panel Side Panel (1) Cover of rack fixing ear There are screw holes under the cover. This ear is for attaching fixing screws to standard rack such as EIA or JIS specifications.
  • Page 33 ECL-210 Operation Manual 5-10 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 34: Safety Information

    EXTERNAL CAVITY TUNABLE LD LIGHT SOURCE ECL-210 Safety Information 6.1. Mains Voltage Please ensure the voltage indicated on the rear panel of the instrument corresponds with the main voltage supply. Applying an incorrect mains voltage will damage the equipment. See Section 5.2 for details of how to change the voltage setting and Section 10.4 for details of...

  • Page 35: Safe Operation

    ECL-210 Operation Manual 6.3. Safe Operation The unit should not be operated in any of the following circumstances: • If water or other liquid is spilt on the unit. • When the unit is cleaned or moved. • If damage is found to the mains cord.
  • Page 36 EXTERNAL CAVITY TUNABLE LD LIGHT SOURCE ECL-210 6.4. Heat Dissipation Environment The fan for heat dissipation is located in back of MLS. Please secure an opening 5cm or more from a fan, and air should flow into it from the slit of the bottom front part. If the slit is closed, or the air doesn't espace from the bottom properly, the equipment generates heat and it may not operate stably.
  • Page 37 ECL-210 Operation Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 38: Operation Procedures

    EXTERNAL CAVITY TUNABLE LD LIGHT SOURCE ECL-210 Operation Procedures 7.1. Contents of Fundamental Operation 7.1.Contents of Basic Operation 7.2. Turning Power ON 7.2.1 The First Power ON 7.2.2. Turning MLS Power ON 7.2.3. Setting RS-232C Delimiters of MLS 7.2.4. Turning ECL Power ON 7.2.5.
  • Page 39 ECL-210 Operation Manual 7.13.1. Specifications 7.13.2. Caution 7.13.3. Usage 7.14. Setting GPIB Address and Delimiters 7.14.1. Cautions 7.14.2. Changing Address 7.14.3. Changing Delimiter 7.15. Parameter Memory of Each Unit 7.16. Plug and Play 7.16.1. Unit Insertion 7.16.2. Pulling Unit Out 7.17.
  • Page 40 EXTERNAL CAVITY TUNABLE LD LIGHT SOURCE ECL-210 7.2. Power On / Off 7.2.1. The First Turning Power On For safe and stable operation, make sure to read Chapter 6. Confirm the power supply voltage before using this system. If the wrong voltage were supplied this would be broken. Insert the unit to MLS without fail, and fix it with fixing screws.
  • Page 41 ECL-210 Operation Manual 9-2Å@ìdåπìäì¸ï˚ñ@/ÉfÉäÉ~É^ÇÃê›íË 5) GP-IB delimiter is displayed. 6) [RS-232C] is displayed. 7) RS-232C delimiter is displayed. 8) All the indications and LEDs are lit. 9) The system confirms the state of unit inserted. If the units are inserted, the parameter is displayed. If not, [non] is displayed.
  • Page 42 EXTERNAL CAVITY TUNABLE LD LIGHT SOURCE ECL-210 7.2.4. MLS shuttle mode setting There are two modes for MLS shuttle switch. Shuttle mode ON: Parameter setting value changes depending on the shuttle switch's angle. Shuttle mode OFF: Parameter changes at regular interval.
  • Page 43 ECL-210 Operation Manual 7.2.5. Turning ECL Power ON MLS confirms the insertion state of each unit, and supplies power sources to the slots in- serted. The supplied units start up independently and those are communicated with MLS and controlled. When the system is turned ON, the following actions (Sequence) are carried out until the system is activated.
  • Page 44 EXTERNAL CAVITY TUNABLE LD LIGHT SOURCE ECL-210 7.2.6. ECL Initial Values and Movement The conditions memorized returns after the power is turned ON. But LD injection current stays shut-down. Drive LD from MLS. ECL initial values: LD injection current set value, circumstance temperature set value, APC...

  • Page 45: Optical Fiber Connection

    Before connecting an optical fiber, always clean the end face of the connector. In addi- tion, we recommend that the socket on each ECL-210 unit is also periodically cleaned . The cleaning procedure is explained in Section 10.3. If dirt is present on either the end face of the connector or the socket the insertion loss will be increased.

  • Page 46: Selecting Units In Mls

    A and B for the MLS- 2100 and A to H for the MLS-8100. (details are given in Chapter 9). The selected ECL-210 unit is shown on the unit selection display. To change the selected slot, push the key [CHANNEL] each time the slot number selected at present enables to shift the slot number inserted to right direction.

  • Page 47: Mls Matrix Led

    ECL-210 Operation Manual MODE Display,shuttle switch Unit ON/OFF key Current Current ON/OFF OpticalPower APC/ACC Switching OpticalPower COH ON/OFF CURR Current N/A (Non Applicable) TEMP LD Temperature ºC POWER Optical Power WAVE Wavelength FINE Fine Tuning 7.6. MLS Matrix LED MLS provides matrix LED for monitoring the status of the all unit inserted. The vertical line shows slot numbers and the horizontal line does the status of each unit.

  • Page 48: Shuttle Switch

    EXTERNAL CAVITY TUNABLE LD LIGHT SOURCE ECL-210 7.7. Shuttle Switch MLS does not prepare numeral keys to input values. Therefore, use the communication function or shuttle switch for input. The shuttle switch is used for setting main parameters such as wave- length and optical power, and setting MLS communication parameters, and also monitoring.
  • Page 49 ECL-210 Operation Manual 9-4Å@îgí∑ÇÃê›íË NOTE When ECL is turned ON, current is not supplied to LD because of protection circuit. Therefore, to drive LD, it is necessary to supply current unto the LD by key operation from MLS or by communication control.
  • Page 50 EXTERNAL CAVITY TUNABLE LD LIGHT SOURCE ECL-210 3) Press [ON/OFF] key. 4) LED lights, and current is injected into LD. SHIFT ON/OFF ºC CURR TEMP POWER WAVE FINE LD.ON CHANNEL MODE APC.ON COH.ON STATUS STORE REMOTE LOCAL MSL-8100 MULTI LIGHT SOURCE CONTROL SYSTEM 5) The current value differ from the set current value and the LD driving method(APC/ACC).
  • Page 51 ECL-210 Operation Manual 7.8.2. Shutting LD Off When the LED is not lit in the [LD.ON] line of the Matrix LD to operate, that LD is not driving. In this condition, the driving circuit shuts off and the protective circuit works. When the LED is lit, shut the LD off as the following procedure.

  • Page 52: Setting Wavelength

    EXTERNAL CAVITY TUNABLE LD LIGHT SOURCE ECL-210 7.9. Setting Wavelength NOTE ECL controls the two components, PBPF and FLF, in selecting wavelength independently. It takes time more or less for FLF to be stable. Here shows the procedure of setting wavelength and the internal sequence.
  • Page 53 ECL-210 Operation Manual NOTE The direct angle sensor is attached to OBPF. The angle sensor enables the actuator to feed- back control. There may be cases of little overshoot and undershoot. NOTE The monitor signals of thermistor, attached to FLF, are temperature-controlled precisely by PI control.

  • Page 54: Setting Optical Output Power

    EXTERNAL CAVITY TUNABLE LD LIGHT SOURCE ECL-210 7.10. Setting Optical Output Power NOTE Here explains the setting optical power on the assumption that LD is driving. (Refer 7. 8. Driving LD and Shutting LD off) NOTE Setting optical power is available only with dBm unit. It is same as in communication control.
  • Page 55 ECL-210 Operation Manual 3) Press [ON/OFF] key and the LED on the [APC.ON] line is lit. SHIFT ON/OFF ºC CURR TEMP POWER WAVE FINE LD.ON CHANNEL MODE APC.ON COH.ON STATUS STORE REMOTE LOCAL MSL-8100 MULTI LIGHT SOURCE CONTROL SYSTEM 7.10.1.2. Setting Optical Output Power...

  • Page 56: Acc Function

    EXTERNAL CAVITY TUNABLE LD LIGHT SOURCE ECL-210 NOTE When to set wavelength again in the state of APC, according to set wavelength or set optical output power, there may be cases that set optical output power cannot be made, though LD injection current is maximum.
  • Page 57 ECL-210 Operation Manual 3) Press [ON/OFF] key and the LED on the [APC.ON] line is lit off. SHIFT ON/OFF ºC CURR TEMP POWER WAVE FINE LD.ON CHANNEL MODE APC.ON COH.ON STATUS STORE REMOTE LOCAL MSL-8100 MULTI LIGHT SOURCE CONTROL SYSTEM 7.10.2.2.

  • Page 58: Fine Tuning Function

    EXTERNAL CAVITY TUNABLE LD LIGHT SOURCE ECL-210 NOTE The range of set current differ each ECL unit more or less. It is allowed to set 0 to the current limit value by software. The unit is mA. 7.11. Fine Tuning Function ECL can tune oscillation wavelength in a wide range by controlling the loss for the components in selecting wavelength in external cavity.

  • Page 59: Coherence Control

    ECL-210 Operation Manual NOTE The control of the fine tuning is ±100. There does not exist the unit for the fine tuning, and the control range corresponds to proximately ±100GHz. NOTE The amount of the fine tuning controlled independently, cannot be memorized in the unit with STORE function.
  • Page 60 EXTERNAL CAVITY TUNABLE LD LIGHT SOURCE ECL-210 3) Press [ON/OFF] key and the LED on the [COH.ON] line is lit. SHIFT ON/OFF ºC CURR TEMP POWER WAVE FINE LD.ON CHANNEL MODE APC.ON COH.ON STATUS STORE REMOTE LOCAL MSL-8100 MULTI LIGHT SOURCE CONTROL SYSTEM 7.12.2.

  • Page 61: Low Frequency Modulation

    0 is weak and 10 is maximum. It is possible to change by communication control. The direct set from the shuttle switch on MLS is not available. When the unit ships out from Santec, the set value has been adjusted properly. 7.13. Low Frequency Modulation 7.13.1.

  • Page 62: Setting Gpib Address And Delimiters

    EXTERNAL CAVITY TUNABLE LD LIGHT SOURCE ECL-210 7.14. Setting GPIB Address and Delimiter 7.14.1. Cautions MLS saves the address and delimiter in internal memory. Even if you turn the power switch off after changing the data of the internal memory, the changed data is not canceled. When the sys- tem is turned on, the changed address and delimiter are settled.
  • Page 63 ECL-210 Operation Manual 3) The ordinary mode is changed to change mode. 4) The current address is displayed on the parameter indicator. 5) Change the address by shuttle switch and confirm it. SHIFT ON/OFF SHIFT ON/OFF ºC ºC CURR TEMP POWER WAVE...
  • Page 64 EXTERNAL CAVITY TUNABLE LD LIGHT SOURCE ECL-210 9) The change mode is finished and it goes back to the ordinary mode. NOTE The address can be set 0-30. Increment and decrement is by rotating the shuttle. 7.14.3. Changing Delimiter 1) Press the shift key and SHIFT-LED is lit. (Refer SHIFT-LED) SHIFT 2) Press [LOCAL] key in SHIFT condition.
  • Page 65 ECL-210 Operation Manual SHIFT ON/OFF ºC CURR TEMP POWER WAVE FINE LD.ON CHANNEL MODE APC.ON COH.ON STATUS STORE REMOTE LOCAL MSL-8100 MULTI LIGHT SOURCE CONTROL SYSTEM 6) The current delimiter is displayed on the parameter indicator. 7) Change the address by shuttle switch and confirm it.

  • Page 66: Parameter Memory Of Each Unit

    EXTERNAL CAVITY TUNABLE LD LIGHT SOURCE ECL-210 NOTE The delimiters are CR, LF, CR+LF, and EOI without characters. The address can be set 0-30. It moves by rotating the shuttle. 7.15. Parameter Memory of Each Unit After setting and changing the parameters of each unit from MLS, the state of each unit can be saved to memory.

  • Page 67: Plug And Play

    ECL-210 Operation Manual NOTE The fine tuning amount, which is auto-set independently by setting wavelength, cannot be saved to unit memory by STORE command. 7.16. Plug and Play When units are exchanged or added in old type system, the stable system must be turned off and units are exchanged or added, and then system must be turned on again.
  • Page 68 EXTERNAL CAVITY TUNABLE LD LIGHT SOURCE ECL-210 NOTE In fasten the fixing screw after inserting unit, the unit would go out if the screw position does not fit. In this case, the system can be damaged. Be careful of it.
  • Page 69 ECL-210 Operation Manual 4) MLS starts the sequence to shut down the unit selected. 5) The power supply of the units shuts down and the unit LED is lit off. TYPE ECL-210 S / N RF.IN LF.IN 6) The unit select indicator of MLS turns light on and off.

  • Page 70: Shutting Power Off

    EXTERNAL CAVITY TUNABLE LD LIGHT SOURCE ECL-210 7.17. Shutting Power Off NOTE Before shutting off the power, make sure that LDs and LD drive LEDs of all the units are off. Otherwise, LD maybe damaged. Make sure that the LD drive LEDs of all ECL units are off, then turn the power key 90degrees to the left to turn off the power.
  • Page 71 ECL-210 Operation Manual 7-34 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 72: Communication Interfaces

    A standard GPIB delta connector is used. Connections should be made using IEEE-488 compatible cables. The GPIB protocol requires each device connected to the data bus to have a unique address. The ECL-210 allows addresses to be set in the range 00 to 30. The factory default setting is 01.

  • Page 73: Rs-232C Control

    The ECL-210 provides support for RS-232C communication through the SIF connector on the front panel. The RTDX (transmit) terminal of the ECL-210 should be connected to the receive terminal of the external device (e.g. computer). The RRDX (receive) terminal of the ECL-210 should be connected to the transmit terminal of the external device.
  • Page 74 Clear To send Data Set Ready Signal Ground RRDX Data Carrier Detect RTDX CAUTION If pingassignment is connected incorrectly, ECL-210 might be broken down. Be careful when connecting it. Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 75: Control Commands

    A and B, the MLS-8100 has eight slots indicated by the letters A to H. To read data from the ECL-210 it is first necessary to set the output parameter to the required data parameter. When subsequent read commands are issued the data corresponding to the set paramter is output.
  • Page 76 Sets output variable to indicate coherence control setting. Sets coherence control setting to specific value (range 0-10). CV xx.xx Initiates reset of MLS rack and ECL-210 units. Stores all current parameter settings to internal memory. Sets output variable to indicate status.
  • Page 77 The 2-nd digit The 1-st digit The SU command is provided to enable the current operation status of the ECL-210 to be probed. The command returns a positive or negative six digit number. The interpretation of the six digit number is detailed below: - (minus) - LD injection current (laser) is on.

  • Page 78: Example Programs

    The program is written in Visual Basic and has an input function to set the wavelength of an ECL-210 unit placed in slot A of a MLS rack, and an output function to read the current optical ouput power and the target optical output power of the same ECL-210 unit.
  • Page 79 ECL-210 Operation Manual ‘READ POWER (dBm) ROUTINE ‘Subroutine description Private Sub Power_Read_dBm() ‘Sets routine name to Power_Read_dBm ‘Define Variables ‘Comment Dim ActualPower_dBm As String * 30 ‘Dimensions array as String of length 30 Dim TargetPower_dBm As String * 30 ‘Dimensions array as...

  • Page 80: Rs-232C Program

    The program is written in Visual Basic and has an input function to set the wavelength of an ECL-210 unit placed in slot A of a MLS rack, and an output function to read the current optical ouput power and the target optical output power of the same ECL-210 unit. The communications port in this example is Com1 and requires the ActiveX MSComm component to be included in the program.
  • Page 81 ECL-210 Operation Manual ‘READ POWER (dBm) ROUTINE ‘Subroutine description Private Sub Power_Read_dBm() ‘Sets routine name to Power_Read_dBm ‘Define Variables ‘Comment Dim ans As String * 30 ‘Dimensions ans array as String of length 30 ‘Read Actual Power Subroutine ‘Comment Form1.MSComm1.PortOpen = True ‘...

  • Page 82: Care And Maintenance

    Care and Maintenance 10.1. Care The ECL-210 is a precision optical instrument and as such requires reasonable care to be taken with its handling, operation and storage. In particular: • Do not drop or expose the unit to shock as this may cause misalignment of the optics, •...

  • Page 83: Cleaning The Optical Connectors

    ECL-210 Operation Manual 10.3. Cleaning the Optical Connectors It is important to ensure the optical connector of the ECL-210 remains clean. Any dirt that accumulates will cause increased loss and when high optical powers are used may lead to connector damage.

  • Page 84: Changing The Fuse

    EXTERNAL CAVITY TUNABLE LIGHT SOURCE ECL-210 10.4. Changing the Fuse If the fuse blows it is important to determine the cause and repair the fault before replacement. The fuse rating is determined by the supply voltage as indicated below. Failure to use a fuse of the correct rating may result in damage to the equipment.
  • Page 85 NOTE Inspection and calibration The warranty for ECL-210 is one year. We recommend to have ECL-210 inspected and calibrated regularly (1 year). For inspection or calibration, please contact our sales team. 10-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 86 13-1-3. Procedure When using high frequency modulation, follow the following procedure. (1) Make sure that both ECL-210 and signal souce are off. Connect the signal source to the ECL-210 through the connection cable. (2) Turn on ECL-210 and the signal source.
  • Page 87 11-2 Control Pad (CP-10E2) 11-2-1. Introduction ECL-210 is designed with a simple and easy to use front panel interface. It has minimal func- tion keys and does not have a numeric keypad for direct wavelength and power setting input. The CP-10 control pad addresses both of these issues, and provides full support of all functions in a compact, handheld design.
  • Page 88 EXTERNAL CAVITY TUNABLE LD LIGHT SOURCE ECL-210 11-3 Blank Cover 11-3-1. Introducation A blank cover is for closing the ventilation from slot insertion of MLS and the ventilation hole inside MLS. Each unit is designed that the air fro cooling flows from the slot bottom inside MLS towards the upper parts.
  • Page 89 ECL-210 OPERATION MANUAL 11-4 Rack Mount Angle This option is to attacch rack mount angles to fix ECL-210 to EIA or JIS standard rack. Ears for MLS-8100 are different from those for MLS-2100. 11-4-1. MLS-8100 (1) Remove a cover from where rack mount angles will be fixed.
  • Page 90 EXTERNAL CAVITY TUNABLE LD LIGHT SOURCE ECL-210 11-5 RS-232C Cable RS-232C is available for ECL. This is a cable to connect RS-232C, TTL serial communication connector and PC. 11-5 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 91 ECL-210 OPERATION MANUAL 11-6 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 92: Troubleshooting

    Check the pin assignment of the Cable is not wired correctly. cable. If after checking the above, the unit is still not operating correctly please contact Santec's technical support division. 12-1 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 93 ECL-210 Operation Manual 12-2 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 94: Warranty

    In no event shall Santec Corporation of Japan nor any subsidiary of Santec nor any distributor of Santec’s products be liable to the customer for any damages, including lost profits, or other incidental or consequential damages arising out of the use or inability to use this product.
  • Page 95 ECL-210 Operation Manual 13-2 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 96 Artisan Technology Group is your source for quality new and certified-used/pre-owned equipment SERVICE CENTER REPAIRS WE BUY USED EQUIPMENT • FAST SHIPPING AND DELIVERY Experienced engineers and technicians on staff Sell your excess, underutilized, and idle used equipment at our full-service, in-house repair center We also offer credit for buy-backs and trade-ins •...

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