ILX Lightwave LDX-3200 Series User manual

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User’s Guide
Precision Current Source
LDX-3200 Series
ILX Lightwave Corporation P. O.Box 6310 Bozeman, MT, U.S.A. 59771 :· · · 1-800-459-9459 · ·
www.ilxlightwave.com
U.S. & Canada International Inquiries: 406-586-1244 Fax [phone]
E-mail: [email protected]
7002820200_7/01
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Safety and Warranty Information
! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !
S AFETY AND W ARRANTY I NFORMATION
The Safety and Warranty Information section provides details about cautionary symbols used in the
manual, safety markings used on the instrument, and information about the Warranty including
Customer Service contact information.
Safety Information and the Manual
Throughout this manual, you will see the words Caution and Warning indicating potentially
dangerous or hazardous situations which, if not avoided, could result in death, serious or minor
injury, or damage to the product. Specifically:
!
CAUTION
Caution indicates a potentially hazardous situation which can result in minor or
moderate injury or damage to the product or equipment.
WARNING
Warning indicates a potentially dangerous situation which can result in serious injury or
death.
WARNING
Visible and/or invisible laser radiation. Avoid direct exposure to the beam.
General Safety Considerations
If any of the following conditions exist, or are even suspected, do not use the instrument until safe
operation can be verified by trained service personnel:
•Visible damage
•Severe transport stress
•Prolonged storage under adverse conditions
•Failure to perform intended measurements or functions
If necessary, return the instrument to ILX Lightwave, or authorized local ILX Lightwave distributor,
for service or repair to ensure that safety features are maintained (see the contact information on
page vi).
All instruments returned to ILX Lightwave are required to have a Return Authorization Number
assigned by an official representative of ILX Lightwave Corporation. See Returning an Instrument on
page v for more information.
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Safety and Warranty Information
S AFETY S YMBOLS
This section describes the safety symbols and classifications.
Technical specifications including electrical ratings and weight are included within the manual. See
the Table of Contents to locate the specifications and other product information. The following
classifications are standard across all ILX Lightwave products:
•Indoor use only
•Ordinary Protection: This product is NOT protected against the harmful ingress of moisture.
•Class I Equipment (grounded type)
•Mains supply voltage fluctuations are not to exceed ±10% of the nominal supply voltage.
•Pollution Degree II
•Installation (overvoltage) Category II for transient overvoltages
•Maximum Relative Humidity: <80% RH, non−condensing
•Operating temperature range of 0 °C to 40 °C
•Storage and transportation temperature of ˘40 °C to 70 °C
•Maximum altitude: 3000 m (9843 ft)
•This equipment is suitable for continuous operation.
Safety Marking Symbols
This section provides a description of the safety marking symbols that appear on the instrument.
These symbols provide information about potentially dangerous situations which can result in death,
injury, or damage to the instrument and other components.
Caution,
refer to
manual
Earth
ground
Terminal
Alternating
current
Visible and/or
invisible laser
radiation
Caution, risk
of electric
shock
Protective
Conductor
Terminal
Caution, hot
surface
Frame or
chassis
Terminal
On: In position of a bistable push control. The
slash (I) only denotes that mains are on.
Off: Out position of a bistable push control.
The circle (O) only denotes that mains are off.
or
(I) or
(O)
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Safety and Warranty Information
W ARRANTY
ILX LIGHTWAVE CORPORATION warrants this instrument to be free from defects in material and
workmanship for a period of one year from date of shipment. During the warranty period, ILX will
repair or replace the unit, at our option, without charge.
Limitations
This warranty does not apply to fuses, lamps, defects caused by abuse, modifications, or to use of
the product for which it was not intended.
This warranty is in lieu of all other warranties, expressed or implied, including any implied warranty
of merchantability or fitness for any particular purpose. ILX Lightwave Corporation shall not be liable
for any incidental, special, or consequential damages.
If a problem occurs, please contact ILX Lightwave Corporation with the instrument’s serial number,
and thoroughly describe the nature of the problem.
Returning an Instrument
If an instrument is to be shipped to ILX Lightwave for repair or service, be sure to:
1Obtain a Return Authorization number (RA) from ILX Customer Service.
2Attach a tag to the instrument identifying the owner and indicating the required service or
repair. Include the instrument serial number from the rear panel of the instrument.
3Attach the anti−static protective caps that were shipped with the instrument and place the
instrument in a protective anti−static bag.
4Place the instrument in the original packing container with at least 3 inches (7. 5 cm) of
compressible packaging material. Shipping damage is not covered by this warranty.
5Secure the packing box with fiber reinforced strapping tape or metal bands.
6Send the instrument, transportation pre−paid, to ILX Lightwave. Clearly write the return
authorization number on the outside of the box and on the shipping paperwork. ILX
Lightwave recommends you insure the shipment.
If the original shipping container is not available, place your instrument in a container with at least 3
inches (7.5 cm) of compressible packaging material on all sides.
Repairs are made and the instrument returned transportation pre−paid. Repairs are warranted for the
remainder of the original warranty or for 90 days, whichever is greater.
Claims for Shipping Damage
When you receive the instrument, inspect it immediately for any damage or shortages on the
packing list. If the instrument is damaged, file a claim with the carrier. The factory will supply you
with a quotation for estimated costs of repair. You must negotiate and settle with the carrier for the
amount of damage.
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Safety and Warranty Information
Comments, Suggestions, and Problems
To ensure that you get the most out of your ILX Lightwave product, we ask that you direct any
product operation or service related questions or comments to ILX Lightwave Customer Support.
You may contact us in whatever way is most convenient:
Phone . . . . . . . . . . . . . . . . . . . . . . . . . . . (800) 459−9459 or (406) 586−1244
Fax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . (406) 586−9405
Email. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [e-mail]
Or mail to:
ILX Lightwave Corporation
P. O. Box 6310
Bozeman, Montana, U.S.A 59771
www.ilxlightwave.com
When you contact us, please have the following information:
If ILX Lightwave determines that a return to the factory is necessary, you are issued a Return
Authorization (RA) number. Please mark this number on the outside of the shipping box.
You or your shipping service are responsible for any shipping damage when returning the
instrument to ILX Lightwave; ILX recommends you insure the shipment. If the original shipping
container is not available, place your instrument in a container with at least 3 inches (7.5cm) of
compressible packaging material on all sides.
We look forward to serving you even better in the future!
Model Number:
Serial Number:
End−user Name:
Company:
Phone:
Fax:
Description or sketch of what
is connected to the ILX
Lightwave instrument:
Description of the problem:
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Table of Contents
Chapter 1 Introduction to the LDX-3200 Series
Introduction ...............................................................................................................................................................1
Safety Symbols and Terms..............................................................................................................................................2
Product Overview............................................................................................................................................................2
Initial Inspection..............................................................................................................................................................2
Installing your LDX-3200 Precision Current Source.......................................................................................................3
Maintenance ...............................................................................................................................................................4
How to Obtain Repair Services .......................................................................................................................................6
LDX-3200 Series Specifications......................................................................................................................................6
Available Options and Accessories .................................................................................................................................8
Chapter 2 How to Operate Your LDX-3200
Introduction ...............................................................................................................................................................1
Applying Power to Your LDX-3200..............................................................................................................................1
Connecting to the Laser...................................................................................................................................................2
Front Panel Operation.....................................................................................................................................................5
Operating a Laser in Constant Current, “I” Mode.........................................................................................................5
Operating a Laser in Constant Power Mode, P...............................................................................................................7
Error Indicators ...............................................................................................................................................................8
Chapter 3 Operating in Remote Control
Introduction ...............................................................................................................................................................1
LDC-3700B Series Current Source Command Set...........................................................................................................2
Status Reporting..............................................................................................................................................................7
Chapter 4 Command Reference
Introduction ...............................................................................................................................................................1
LDX-3200 Series Device-Dependent Commands...........................................................................................................4
LDX-3200 Series Device-Dependent Command Reference............................................................................................5
Chapter 5 Functions and Features
Introduction ...............................................................................................................................................................1
Saving and Recalling from the Front Panel.......................................................................................................................1
Using the Laser Compliance Voltage Adjustment ...........................................................................................................2
Using the LDX-3200 Trigger Function............................................................................................................................2
Modulating the Laser Current Source..............................................................................................................................3
Chapter 6 Calibration and Troubleshooting Guide
Introduction ...............................................................................................................................................................1
Local Calibration of the LDX-3200 Series Current Source..............................................................................................2
Remote Calibration of the LDX-3200 Series Current Source..........................................................................................6
Troubleshooting Guide..................................................................................................................................................10
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INTRODUCTION TO THE LDX-3200 SERIES CHPT 1
CHAPTER 1 1
INTRODUCTION TO THE LDX-3200 SERIES 1
Introduction 1
Product Overview 2
Initial Inspection 2
Installing Your LDX-3200 Precision Current Source 3
Grounding requirements 3
AC Line Power Requirements 3
GPIB Connector 3
The GPIB Address 3
Tilt-Foot Adjustment 4
Operating the LDX-3200 Precision Current Source 4
Maintenance 5
How to Obtain Repair Services 6
General Shipping Instructions 6
LDX-3200 Series Specifications 7
Laser Current Source Specifications 7
Available Options and Accessories 8
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INTRODUCTION TO THE LDX-3200 SERIES CHPT 1
PAGE 1
CHAPTER 1
INTRODUCTION TO THE LDX-3200 SERIES
INTRODUCTION
This chapter is an introduction to the LDX-3200 Series Precision Current Sources containing unpacking information,
instructions on how to install and apply power, and safety considerations and instructions. It also contains some
maintenance information, specifications, and listings of the LDX-3200 options and accessories.
WARNING
If any of the following symptoms exist, or are even suspected, remove the LDX-3200 from service.
Do not use the LDX-3200 until trained service personnel can verify safe operation.
1. Visible damage
2. Severe transport stress
3. Prolonged storage under adverse conditions
4. Failure to perform intended measurements or functions
If necessary, return the LDX-3200 to ILX Lightwave for service and repair to ensure that safety
features are maintained.
In order to get the most out of your ILX Lightwave product, we ask that you direct any product operation or service
related questions or comments to Customer Support at 1-800-459-9459 (USA and Canada), 406-586-1244
(International) or by fax at 406-586-9405. Or E-mail us at [email protected].
When calling, please have the following information on hand (if applicable):
1) Product Model: ________________________________________________
2) Unit Serial Number: ________________________________________________
3) End user name and telephone/fax
Name: ________________________________________________
Company: ________________________________________________
Phone: ________________________________________________
Fax: ________________________________________________
4) Description/sketch of what is connected to the ILX Lightwave instrument.
5) Description of the problem.
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INTRODUCTION TO THE LDX-3200 SERIES CHPT 1
PAGE 2
SAFETY SYMBOLS AND TERMS
The following safety terms are used in this manual:
•The WARNING heading explains dangers that could result in personal injury or death.
•The CAUTION heading explains hazards that could damage your instrument.
•The NOTES heading gives information to the user that may be beneficial in the use of the instrument and to the
devices being tested.
The following symbols are used in this manual and on the instrument:
Earth Ground and/or Protective conductor terminal
Caution: Refer to accompanying documents
Caution: Risk of Electrical Shock
Instrument Power Off
Instrument Power On
PRODUCT OVERVIEW
The LDX-3200 Series instruments are precision current sources. They provide a high stability output with a fully
redundant current limit and multiple laser protection features. The LDX-3200 Series' fast, sophisticated GPIB option
lets you automate your experiment.
INITIAL INSPECTION
When you receive your LDX-3200 instrument, verify that the following items were shipped with the instrument:
LDX-3200 Series Precision Current Source
LDX-3200 Series Instruction Manual
Power Cord
Shipping Kit
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INTRODUCTION TO THE LDX-3200 SERIES CHPT 1
PAGE 3
INSTALLING YOUR LDX-3200 PRECISION CURRENT SOURCE
Grounding requirements
The LDX-3200 Series Precision Current Source comes with a three conductor AC power cable. The power cable must
either be plugged into an approved three-contact electrical outlet or used with a three-contact or two-contact adapter
with the grounding wire connected to an electrical ground (safety ground). The LDX-3200’s power jack and supplied
power cable meet IEC safety standards.
AC Line Power Requirements
You can operate the LDX-3200 Series instrument from a single phase power source delivering nominal line voltages
of 100, 120, 220, or 240 VAC (all values RMS), at 50/60 Hz. The line power voltage can vary +10% but cannot exceed
250 VAC. Maximum power consumption is 60 VA (Volt-Amps). The instrument’s operational voltage is factory
configurable and need not be changed before operating the instrument. However, check to be sure that the voltage
printed on the back panel of the instrument matches the power-line voltage in your area.
WARNING
Before connecting the LDX-3200 Series Precision Current Source to a power source, verify that the AC power
source matches the setting of the LDX-3200’s voltage printed on the rear panel of the instrument.
To avoid electrical shock hazard, connect the instrument to properly earth-grounded, 3-prong receptacles only.
Failure to observe this precaution can result in severe injury or death.
GPIB Connector
The IEEE 488.2 GPIB interface connector is located on the rear panel, directly above the power input module and fuse.
See Figure 1.2, LDX-3200 Series Rear View. Attach the GPIB cable to the 24-pin connector located on the rear panel.
The connector is tapered to ensure proper orientation. Using your fingers, tighten the two screws on the cable
connector.
A total of 15 devices can be connected together on the same GPIB interface bus. The cables have single male/female
connectors on each end so that several cables can be stacked. This allows more than one cable to be attached to any
one device. However, the maximum length of the GPIB cables must not exceed 20 meters (65 feet) total, or 2 meters
(6.5 feet) per device.
The GPIB Address
The talk and listen addresses on the LDX-3200 Series Precision Current Source are identical. This GPIB address is
read locally by pressing the (GPIB) LOCAL switch with the address displayed on the LCD display. The instrument
comes from the factory configured with the GPIB address set to 1. You can change the LDX-3200’s GPIB address
locally (via front panel). A procedure for changing the address can be found in the section “Changing the GPIB
Address” in Chapter 3.
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INTRODUCTION TO THE LDX-3200 SERIES CHPT 1
PAGE 4
Tilt-Foot Adjustment
The LDX-3200 Series Precision Current Source comes standard with folding front legs and two rear feet for use as a
bench top instrument. Extending the front feet so that the instrument front panel sits up makes it easier to view the
LED displays. To use them, place the unit on a stable base and rotate the front legs downward until they lock into
position.
Operating the LDX-3200 Precision Current Source
Now that the LDX-3200 Precision Current Source is installed and ready for use, you can begin to learn about its
operation. The following figures are photographic copies showing the functional keypad groupings, back panel
connectors, and so on. Use these figures to familiarize yourself with the LDX-3200. After that, use Chapter 2 for
fundamentals of operating your instrument.
FIGURE 1.1 LDX 3200 Series Front View
Current
Range Selection
Laser Mode
Selection
Parameter
Selection
Display
Power
Switch
Modulation Input
Connector
Adjust Section
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INTRODUCTION TO THE LDX-3200 SERIES CHPT 1
PAGE 5
FIGURE 1.2 LDX-3200 Series Rear View
MAINTENANCE
This section covers information on how to obtain repair services.
WARNING
Potentially lethal voltages exist within the LDX-3200 Series Precision Current Source. To avoid electric shock, do
not perform any of the maintenance on the instrument unless you are qualified to do so. Qualified service personnel
are required to wear protective eyeglasses and anti-static wristbands while working on the LDX-3200 Series
Precision Current Source circuit boards. High voltages are present on and around the instrument’s printed circuit
boards.
PD Bias Adjust
Trigger Output
Connector Power Cord
Connector
LD Connector
GPIB Connector
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INTRODUCTION TO THE LDX-3200 SERIES CHPT 1
PAGE 6
HOW TO OBTAIN REPAIR SERVICES
You may have to return your instrument to the ILX Lightwave facility at some time for repair or service whether it is
under warranty or not. There is a charge for repairs after the warranty period has expired. Contact an ILX Lightwave
service representative for shipping instructions prior to returning the instrument. Have the model number, instrument
serial number and a description of the problem or request at the time of the call. All ILX Lightwave instruments are
identified by a serial number located on the rear panel. The first four or five digits are the model number, the last four
digits are unique to the instrument and identify your instrument specifically. A return authorization number will be
given to you at the time of your request for repair or service. Please use this number in all communications
concerning your instrument.
General Shipping Instructions
If you need to ship your LDX-3200 Precision Current Source back to the factory for repair, be sure that the LDX-3200
is packaged in an enclosure with cushioning material to prevent damage to the instrument during shipment (use the
original shipping containers and accessories if possible). Re-install the ESD protective caps on the rear and front
panels over the connectors (9 pin D, BNC, and GPIB). Shipping damage is not covered under warranty.
Attach a tag to the instrument identifying the owner and indicating the service or repair needed. Include the model
number and serial number. We suggest that you insure the shipment.
In North America, contact ILX Lightwave for return authorization and shipping instructions. Outside of North
America, contact your ILX distributor for the shipping information.
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INTRODUCTION TO THE LDX-3200 SERIES CHPT 1
PAGE 7
LDX-3200 SERIES SPECIFICATIONS
Laser Current Source Specifications
Model Number LDX-3210 LDX-3220
DRIVE CURRENT OUTPUT 1
Output Current Range: 0 to 50 mA 0 to 100 mA 0 to 200 mA 0 to 500 mA
Set-Point Resolution: 1 µA2 µA4 µA10 µA
Set-Point Accuracy (% of FS):
±
0.05%
±
0.05%
±
0.05%
±
0.05%
Compliance Voltage: 0 - 10 V, 0 - 10 V, 0 - 10 V, 0 - 10 V,
adjustable adjustable adjustable adjustable
Temperature Coefficient: <50 ppm/°C<50 ppm/°C<50 ppm/°C<50 ppm/°C
Short-Term Stability (1 hr.): 2<10 ppm <10 ppm <10 ppm <10 ppm
Long-Term Stability (24 hr.): 3<20 ppm <20 ppm <20 ppm <20 ppm
Noise and Ripple (
µ
A rms)4
High Bandwidth Mode: <1.5
µ
A<1.5
µ
A<4
µ
A<4
µ
A
Low Bandwidth Mode: <1.5
µ
A<1.5
µ
A<2
µ
A<2
µ
A
Transients
Operational: 5<1 mA <1 mA <1 mA <1 mA
1kV EFT/Surge: 6<5 mA/< 8 mA <5 mA/< 8 mA <8 mA/< 12 mA <8 mA/< 12 mA
COMPLIANCE VOLTAGE ADJUST
Range: 0 - 10 V 0 - 10 V 0 - 10 V 0 - 10 V
Resolution: 50 mV 50 mV 50 mV 50 mV
Accuracy:
±
2.5%
±
2.5%
±
2.5%
±
2.5%
DRIVE CURRENT LIMIT SETTINGS
Range: 1 to 50.5 mA 1 to 101 mA 1 to 202 mA 1 to 505 mA
Resolution: 0.25 mA 0.5 mA 1 mA 2.5 mA
Accuracy:
±
0.5 mA
±
1 mA
±
2 mA
±
5 mA
PHOTODIODE FEEDBACK
Type: Differential Differential Differential Differential
PD Reverse Bias : 0 - 5V, adjustable 0 - 5V, adjustable 0 - 5V, adjustable 0 - 5V, adjustable
PD Current Range : 5 to 5000 µA5 to 5000 µA5 to 5000 µA5 to 5000 µA
Output Stability: 7
±
0.02%
±
0.02%
±
0.02%
±
0.02%
Accuracy, set point (% of FS):
±
0.05%
±
0.05%
±
0.05%
±
0.05%
EXTERNAL ANALOG MODULATION
Input: 0-10V, 10kΩ0-10V, 10kΩ0-10V, 10kΩ0-10V, 10kΩ
Transfer Function: 5 mA/V 10 mA/V 20 mA/V 50 mA/V
Bandwidth (3 dB)
High Bandwidth: 8DC to 1 MHz DC to 1 MHz DC to 1 MHz DC to 1 MHz
Low Bandwidth:9 DC to 15 kHz DC to 15 kHz DC to 15 kHz DC to 15 kHz
TRIGGER OUTPUT
Type: TTL TTL TTL TTL
Pulse Width: 13 µS13 µS13 µS13 µS
Delay: 12 mS 12 mS 12 mS 12 mS
MEASUREMENT (DISPLAY)
Output Current Range: 0 to 50.000 mA 0 to 100.00 mA 0 to 200.00 mA 0 to 500.00 mA
Output Current Resolution: 0.001 mA 0.002 mA 0.01 mA 0.01 mA
Output Current Accuracy:
±
0.05% FS
±
0.05% FS
±
0.05% FS
±
0.05% FS
Photodiode Current Range: 0 to 5,000
µ
A0 to 5,000
µ
A0 to 5,000
µ
A0to 5,000
µ
A
Photodiode Current Resolution: 1
µ
A1
µ
A1
µ
A1
µ
A
Photodiode Current Accuracy:
±
2
µ
A
±
2
µ
A
±
2
µ
A
±
2
µ
A
PD Responsivity Range: 10 0.00 to 1000.00 µA/mW 0.00 to 1000.00 µA/mW 0.00 to 1000.00 µA/mW 0.00 to 1000.00 µA/mW
PD Responsivity Resolution: 0.01 µA/mW 0.01 µA/mW 0.01 µA/mW 0.01 µA/mW
Optical Power Range: 0.00 to 101.00 mW 0.00 to 101.00 mW 0.00 to 505.00 mW 0.00 to 505.00 mW
Optical Power Resolution: 0.01 mW 0.01 mW 0.01 mW 0.01 mW
Forward Voltage Range: 0.000 to 10.000 V 0.000 to 10.000 V 0.000 to 10.000 V 0.000 to 10.000 V
Forward Voltage Resolution: 1 mV 1 mV 1 mV 1 mV
Forward Voltage Accuracy: 11 ±2 mV ±2 mV ±2 mV ±2 mV
1All values relate to a one-hour warm-up period.
2Over any 1-hour period, half-scale output.
3Over any 24-hour period, half-scale output.
4Measured optically, evaluating noise intensity of a laser diode into a photodectector with 150 kHz bandwidth. Request ILX Application Note #3.
5Maximum output current transient resulting from normal operational situations (e.g., power on-off, current on-off), as well as accidental situations (e.g., power line plug
removal).
6Maximum output current transient resulting from a 1000 V power-line transient spike. Tested to ILX Lightwave Technical Standard #LDX-00196. Request ILX Application Note
#3.
7Maximum monitor photodiode current drift over any 30 minute period. Assumes zero drift in responsivity of photodiode.
8300 mA set point, 60 mA modulation current.
9Small signal specification is for typ. 10% modulation depth. Large signal spec. assumes 50% modulation depth at mid-scale output.
10 Responsivity value is user-defined and is used to calculate the optical power.
11 Four wire voltage measurement at the load. Voltage measurement accuracy while driving calibration load. Accuracy is dependent upon load and cable used.
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INTRODUCTION TO THE LDX-3200 SERIES CHPT 1
PAGE 8
GENERAL
Size (H x W x D) 4" x 8.5" x 13.4", 102 mm x 216 mm x 340 mm
Weight
LDX-3210 approx 12 lbs (5.5 kg)
LDX-3220 approx 12 lbs (5.5 kg)
Power (50-60 Hz) 100 V,
±
10%
120 V,
±
10%
220 V,
±
10%
230-240 V,
±
10%
Temperature 0 to +40 °C operating; -40 to +70 °C storage
Humidity < 90 % relative humidity, non-condensing.
Laser Safety Features: Key switch, interlock and output delay (meets CDRH US21 1040.10)
Display type: 5-digit, green LED
AVAILABLE OPTIONS AND ACCESSORIES
Options and accessories available for the LDX-3200 Series Precision Current Sources include the following:
DESCRIPTION MODEL NUMBER
Rack mount flange kit Tba
Temperature Controlled Laser Diode Mount LDM-4407
Temperature Controlled Laser Diode Mount
(available with collimating assembly) LDM-4412
DIL Laser Diode Mount LDM-4982
Butterfly Laser Diode Mount LDM-4894
High Power Laser Diode Mount LDM-4442
Current Source Interconnect Cable (unterminated) CC-306S
Current Source Interconnect Cable (terminated) CC-305S
Other Laser Diode Mounts are available. Please contact ILX Lightwave for information on additional options for your
applications.
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HOW TO OPERATE YOUR LDX-3200 CHPT 2
CHAPTER 2 1
HOW TO OPERATE YOUR LDX-3200 1
INTRODUCTION 1
APPLYING POWER TO YOUR LDX-3200 1
The Power-On Sequence 1
The Power-On State 1
CONNECTING TO THE LASER 2
Interlock Connections 4
Photodiode Connections 4
Setting the PD bias 4
Grounding considerations 4
FRONT PANEL OPERATION 5
The Display 5
OPERATING A LASER IN CONSTANT CURRENT, “I” MODE 5
Setting Up the Precision Current Source 5
Conditions Which Will Automatically Shut Off the LASER OUTPUT 6
OPERATING A LASER IN CONSTANT POWER MODE, P 7
Entering Photodiode Responsivity values 7
ERROR INDICATORS 8
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