LDC

3900
Modular Laser
Diode Controller

LDC

Specifications
TEC Modules1
TEMPERATURE CONTROL
2

Temperature Control Range:
Thermistor Setpoint
Resolution and Accuracy:3–20°C to 20°C
20°C to 50°C
AD590 and LM335 Setpoint
Resolution and Accuracy:4–20°C to 50°C
Short Term Stability (one-hour.):5
Long Term Stability (24-hours):6

TEC OUTPUT7
Output Type:
Isolation:

Compliance Voltage:
Short Circuit Output Current:
Maximum Output Power:
Current Limit
Range:
Set Accuracy:
Ripple/ Noise:8Control Algorithm:

Product Features
1539032/39034

Temperature Controller Output:–99.9°C to 199.9°C
Resolution
0.1°C
0.2°C

Accuracy±0.2°C±0.2°C

Resolution
0.01°C<±0.004°C<±0.01°C

Accuracy±0.1°C

Bipolar current source
Isolated from other modules and earth
ground
>8V
4A
32W
0–4A
±50mA
<1mA, rms
Smart Integrator, Hybrid PI

TEMPERATURE SENSOR

Types
Thermistor:
IC Temperature Sensor:
RTD Sensor:9
Thermistor Sensing Current:
Sensor Bias:

Usable Thermistor Range:
Typical Sensor Output10
AD590 Current Output:
LM335 Voltage Output:
RTD (PT100) Resistance:
User Calibration:

MAINFRAME/GENERAL
Chassis Ground:Power Requirements,
50–60Hz:(user selectable)
Size (HxWxD):

WeightMainframe:
Module (each, typical):Operating Temperature:
Storage Temperature:
Humidity:
Laser Safety Features:
Laser Display:
TEC Display:

NTC (2-wire)
AD590/ LM335
Pt100/other 100Ω RTD
10/100µA
AD590 = 8V, LM335 = 1mA,
RTD = 0.8 mA925–450,000Ω , typicalI (25°C) = 298.2µA, It = 1µA/K
V (25°C) = 2.73V, Vt = 10mV/K
R (25°C) = 109.73Ω
Thermistor = Steinhart-Hart
IC Sensors, RTD = Two-point

4mm Banana jack
100VAC, 120VAC, 220VAC,
240VAC, (+6%/-10%)145mm x 426mm x 346mm(5 5/8" x 16 3/4" x 13 5/8")
12.5kg (27.5lbs)
1.0 kg (2.3lbs)
0°C to 50°C
–40 to 70°C
<90%, noncondensing
Keyswitch, Interlock, Output Delay(Meets CDRH US21 CFR 1040.10)
5-digit, Green LED
5-digit, Green LED

Includes ILX model LTS-520 calibrated 10kΩ thermistor.

In keeping with our commitment to continuing improvement, ILX Lightwave reserves the right to change
specifications at any time without notice and with out liability for such changes.

15-pin, D-sub

TEC MEASUREMENT (DISPLAY)11

Temperature:
10µA Setting:13
100µA Setting:14
Thermistor Resistance:
10µA Setting:
100µA Setting:
TE Current:

Range12–99.99°C to 199.99°C–99.99°C to 199.99°C

Resolution
0.01°C
0.01°C

Accuracy±0.1°C±0.05°C

0.0–480.00kΩ
0.0–48.000kΩ–4.000 to 4.000A

0.01kΩ
0.001kΩ0.001A±0.05%±0.05%±0.04ATE VOLTAGE15
Voltage Range:
Voltage Resolution:
Voltage Accuracy:–9.999 to 9.999V
1mV±30mV16

TEC MODULE NOTES:
1
2
3
4
5
6

ORDERING INFORMATION NOTES**TEC OUTPUT CONNECTORS

7
8
9
10
11
12
13
14
15
16

All values relate to a one-hour warm-up period.
Software limits of range. Actual range possible depends on the physical load, thermis
tor type, and TE module used.
Accuracy figures are quoted for a typical 10kΩ thermistor and 100µA current setting.
Accuracy figures are relative to the calibration standard. Both resolution and accuracy
are dependent upon the user-defined configuration of the instrument.
Accuracy depends upon the the sensor model selected, the calibration standard,
and the user-defined configuration of the instrument.
Over any one-hour period, half-scale output, controlling an LDM-4412 mount at 25°C,
with 10kΩ thermistor on 100µA setting.
Over any 24-hour period, half-scale output, controlling an LDM-4412 mount at 25°C,
with 10kΩ thermistor on 100µA setting.
Into a 1Ω load.
Measured at 1A output over a bandwidth of 10Hz to 10MHz.
To use RTD sensor, model 39032 must be ordered with TSC595 Sensor Option.
To use RTD sensors with model 39034, order TSC-599 Temperature Sensor Converter
accessory.
Nominal temperature coefficients, It and Vt, apply over the rated IC temperature
sensor range.
Displayed on LDC-3900 mainframe front panel “TEC” section.
Software limits of display range.
Using a 100kΩ thermistor, controlling an LDM-4412 mount over –30°C to 25°C.
Using a 10kΩ thermistor, controlling an LDM-4412 mount over 0°C to 90°C.
Model 39034 has TEC Voltage measurement through GPIB only. Not available on
Model 39032.
Voltage measurement accuracy while driving calibration load. Accuracy is dependent
upon load used.

LD controller modules from
200mA to 2A with integrated 12W
TEC
32W TEC only modules with
voltage measurement
TEC modules accept thermistor,
IC and RTD temperature sensors
Standard GPIB IEEE interface

LDC-3900
CSM-39020
CSM-39050
CSM-39100
CSM-39400
CMS-39800
TCM-39032**
TCM-39034**
LCM-39420
LCM-39425
LCM-39427

Modular Laser Diode Controller Mainframe
200mA Current Source Module
500mA Current Source Module
1A Current Source Module
4A Current Source Module
8A Current Source Module (Module take two slots in LDC-3900)
32W TEC Module
32W TEC Module with Voltage Measurement
Current/TEC Combination Module (200mA Drive Current/8W TEC)
Current/TEC Combination Module (500mA Drive Current/12W TEC)
Current/TEC Combination Module (500mA Drive Current/12W TEC)
with Modulation
LCM-39437
Current/TEC Combination Module (1A Drive Current/12 W TEC) with
Modulation
LCM-39440
Current/TEC Combination Module (2A Drive Current/8W TEC)
CC-305S
Current Source/Laser Diode Mount Interconnect Cable
CC-306S
Current Source/Unterminated Interconnect Cable
CC-501STE Controller/Unterminated Interconnect Cable
CC-505STE Controller/Laser Diode Mount Interconnect Cable
TS-510Calibrated 10kΩ Thermistor
TS-520Uncalibrated 10kΩ Thermistor
TS-530Uncalibrated AD590LH IC Temperature Sensor
TS-540Uncalibrated LM335AH IC Temperature Sensor
TSC-595
RTD Temperature Sensor Control Option (for 39032 Module)
RM-103
Rack Mounting Kit
UCA-350
Unipolar Heater Control Adapter
LNF-320
Low Noise Filter
LabVIEW®Instrument Driver

Flexible, Comprehensive Controlof Laser Diodes

1-800-459-9459
www.ilxlightwave.com

Laser current source modules
from 200mA to 8A

The LDC-3900 Modular Laser Diode Controller features
four channels with eight isolated outputs for controlling
multiple laser diodes. Modules include current sources withmaximum outputs from 200mA to 8A, TE (thermoelectric)
controller modules with up to 32W of power and voltage
measurement, and controller modules with laser control
from 200mA to 2A and integrated 12W TE control.
An independent power supply powers each channel,
providing protection and stability for your laser diode. Every
module incorporates low noise, high stability performance,and ILX Lightwave’s unmatched laser diode protection
topologies including independent current limits and laser
diode shorting relays.
Remote communication through an IEEE/GPIB interface
simplifies testing and control of multiple devices. LabVIEW®
drivers are also available for any combination of mainframe
and module.

ORDERING INFORMATION

For information call
P.O. Box 6310, Bozeman, MT 59771•FAX: 406-586-9405

4 Independent Channels with 8
isolated outputs

International Inquiries: 406-5856-2481
email: sales@ilxlightwave.com

REV02.092006

3900
Modular Laser
Diode Controller

LDC

3900
Modular Laser
Diode Controller

Wide Range of Modules
Five current source modules and five combination modules along with two TE controller only
modules make the LDC-3900 configurable for manylaser diode testing and control
applications. Each module iselectrically floating or fully isolated from all other modules.
This allows you to configure yourlaser diode test system without
the worry of potential laser diodedamaging ground loops.

Current Source
Modulesand temperature control of laser diodes. All of thefeatures found in the current only and temperature
control modules are incorporated into these flexible
modules and include multiple modes of operation,
external modulation, a choiceof temperature sensors, and all
protection features.

Intuitive Front Panel
Divided into two sections, TEC
and LASER, the front panel offers
quick, easy operation and information display without confusing
multi-layer menus. Each channel isdirectly addressable from the front
panel “adjust” section and indicated through discrete LEDs next
to the respective display. Laser
and TEC parameters and modes
are easily selected or adjusted
through discrete pushbuttons.

The LDC-3900 current source
design offers superior laser
protection and low noise, highstability performance. These
to four modules can be easily
modules also feature a photo- Up
adjusted and controlled from thediode measurement circuit for LDC-3900 front panel.
Powerful GPIB Interface
devices with backfacet monitor
For automated control, thephotodiode and analog modulation up to 500kHz
IEEE/GPIB interface allows programming andfor dithering the laser current for wavelength tuning.
readout from most computers. All instrument
Five different current source modules up to 8A canand module functions are accessible through thebe driven in any one of the following modes:
interface allowing you to simultaneously control
1) Constant current, low bandwidth
multiple laser diodes from the same address.
2) Constant current, high bandwidth
For virtual instrument programming, LabVIEW®
drivers are available upon request or through the3) Constant optical power
ILX website.

Highly Stable Temperature Control

The LDC-3900 TEC modules control temperature of your devices with 32W of power. These TEC
modules offer maximum flexibility with a choiceof operating modes and temperature sensors
covering thermistors, IC, and RTDs. A low noise,
biopolar output with TE voltage measurement andan ultra-stable topology achieves stabilities better
than 0.005°C. A smart integrator control loop, programmable from the front panel or through GPIB,
delivers fast settling times.

Controller Modules
Controller modules combine a current sourcewith a temperature controller in one module. Laser
current from 200mA to 2A is available with an
integrated 12W temperature controller for current* Semiconductor lasers are sensitive devices. Always
take appropriate antistatic precautions and use extreme
care when handling laser diodes. For more information,
request ILX Application Note #3, “Protecting Your Laser
Diode.”

LDC

Specifications
Current Source Modules1
Current Source1

39020

39050

39100

39400

3980014

0–200mA

0–500mA

0–1000mA

0–4000mA

0–8000mA

10µA±0.1% of FS
7V

10µA±0.1% of FS
6.5V

100µA
±0.1% of FS
6V

100µA
±0.1% of FS
5V

125µA
±0.1 % of FS
5V at connector<60ppm/°C<20ppm<50ppm<60ppm/°C<20ppm<40ppm<100ppm/°C<20ppm<40ppm<100ppm/°C<20ppm<40ppm<100ppm/°C<20ppm<40ppm

<3µA<2.5µA
<1µA

<5µA
<3µA
<1.5µA<10µA<5µA<2.5µA

<15µA
<5µA
<3µA

<120µA<110µA
N/A<1mA<5mA/<8mA

<1mA
<2mA
<5mA
<5mA/<8mA<5mA/<8mA<10mA/<20mA
All modules isolated from other modules and earth ground<8mA<20mA/<40mA

0–200mA
0.5mA±2mA

0–500mA
2mA±5mA

0–1000 mA
4mA
±10mA

0–4000mA
16mA
±40mA

0–8000mA
40mA
±80mA

Transimpedance
0–5V, adjustable
0–5mA
0.02%
±0.05% of FS

Transimpedance
0–5V, adjustable
0–5mA
0.02%
±0.05% of FS

Transimpedance
0–5V, adjustable
0–10mA
0.02%±0.05% of FS

Transimpedance
0–5V, adjustable
0–20mA
0.02%±0.1% of FS

Transimpedance
0–5V, adjustable
0–20mA
0.02%±0.1% of FS

0–10V, 10kΩ
20mA/V

0–10V, 10kΩ
50mA/V

0–10V, 10kΩ
100mA/V

0–10V, 10kΩ
400 mA/V

0–10V, 10kΩ
800mA/V

DC to 500kHz
DC to 5kHz
DC to 30Hz

DC to 200kHz
DC to 5kHz
DC to 30Hz

DC to 200kHz
DC to 5kHz
DC to 30Hz

DC to 50kHz
DC to 2kHz
DC to 30Hz

DC to 50kHz
DC to 2kHz
DC to 30Hz

9-pin, D-sub
Coax BNC
Coax BNC
inst. amp. input

9-pin, D-sub
Coax BNC
Coax BNC
inst. amp. input

9-pin, D-sub
Coax BNC
Coax BNC
inst. amp. input

9-pin, D-sub
Coax BNC
Coax BNC
inst. amp. input

16-pin, Bulkhead
Coax BNC
Coax BNC
inst. amp. input

0–200.00mA
0.01mA±0.05% of FS

0–500.00mA
0.01mA±0.1% of FS

0–1000.0mA
0.1mA±0.1% of FS

0–4000.0mA
0.1mA±0.1% of FS

0–8000.0mA
0.1mA±0.1% FS

0–5000µA
1µA±2µA

0–5000µA
1µA±2µA

0–10,000µA
1µA
±2µA

0–20,000µA
1µA
±4µA

0–20,000µA
1µA
±4µA

DRIVE CURRENT OUTPUT
Output Current Range:
Setpoint
Resolution:
Accuracy:
Compliance Voltage:(4.5V end of cable)

Temperature Coefficient:
Short-Term Stability (one-hour):2
Long-Term Stability (24 hours):3
Noise and Ripple (µA rms)4
High Bandwidth Mode:
Low Bandwidth Mode:
With LNF-320:5
Transients:
Operational:6
Power-line spike induced:7
Isolation:

DRIVE CURRENT LIMIT SETTINGS
Range:
Resolution:
Accuracy:

PHOTODIODE FEEDBACKType:
Reverse Bias:
Photodiode Current Range:
Output Stability:8
Setpoint Accuracy:

EXTERNAL ANALOG MODULATION
Input:
Transfer Function:
Bandwidth (3dB)
High Bandwidth:9
Low Bandwidth:
Low Bandwidth CW:5OUTPUT CONNECTORS
Current Source Output:
Photodiode Input:
Analog Modulation Input:

MEASUREMENT (DISPLAY)10
Output Current
Range:
Resolution:
Accuracy:11
Photodiode Current
Range:
Resolution:
Accuracy:11
Photodiode Responsivity
Range:12
Resolution:
Optical Power
Range:
Resolution:
Forward Voltage
Range:
Resolution:
Accuracy:13

CURRENT SOURCES NOTES
1
2
3
4
5
6

0.00–600.00µA/mW 0.00–600.00µA/mW 0.00–600.00µA/mW 0.00–600.00µA/mW
0.01µA/mW
0.01µA/mW
0.01µA/mW
0.01µA/mW

0.00–1000.00µA/mW
0.01µA/mW

0.00–200.00mW
0.01mW

0.00–500.00mW
0.1mW

0.00–1000.0mW
0.1mW

0.00–5000.0mW
0.1mW

0.00–8000.0mW
0.1mW

0.000–7.000V
1mV
±3mV

0.000–7.000V
1mV
±3mV

0.000– 7.000V
1mV
±3mV

0.000–5.000V
1 mV
±3mV

0.000–5.000V
1mV
±5mV

All values relate to a one-hour warm-up period.
Over any one-hour period, half-scale output at 25°C ambient.
Over any 24-hour period, half-scale output at 25°C ambient.
Measured optically from resulting intensity fluctuations of a laser diode with a
150kHz bandwidth photodetector. Measurements made with 1MHz detector are
typically 10% higher.
With model LNF-320 low noise CW filter enabled.
Maximum output current transient resulting from normal operational situations(i.e., power on-off, current on-off), as well as accidental situations(i.e., power line plug removal). For more information, request ILX "Transient Test
Standards” #LDC-00196.

7

Maximum output current transient resulting from a 1000V power line transient spike.
Tested to ILX Lightwave Technical Standard #LDC-00196.
Maximum monitor photodiode current drift over any 30 minute period. Assumes
zero drift in responsivity of photodiode.
9 50% modulation at mid-scale output.
10 Displayed on LDC-3900 mainframe front panel “LASER” section.
11 Measured at 25°C.
12 Responsivity value is user-defined and is used to calculate the optical power.
13 Voltage measurement accuracy while driving calibration load. Connected at therear panel connector. Accuracy may vary depending on load and cable length used.
14 Model 39800 8A module uses two rear-panel module bays.
83900
Modular Laser
Diode Controller

LDC

3900
Modular Laser
Diode Controller

Wide Range of Modules
Five current source modules and five combination modules along with two TE controller only
modules make the LDC-3900 configurable for manylaser diode testing and control
applications. Each module iselectrically floating or fully isolated from all other modules.
This allows you to configure yourlaser diode test system without
the worry of potential laser diodedamaging ground loops.

Current Source
Modulesand temperature control of laser diodes. All of thefeatures found in the current only and temperature
control modules are incorporated into these flexible
modules and include multiple modes of operation,
external modulation, a choiceof temperature sensors, and all
protection features.

Intuitive Front Panel
Divided into two sections, TEC
and LASER, the front panel offers
quick, easy operation and information display without confusing
multi-layer menus. Each channel isdirectly addressable from the front
panel “adjust” section and indicated through discrete LEDs next
to the respective display. Laser
and TEC parameters and modes
are easily selected or adjusted
through discrete pushbuttons.

The LDC-3900 current source
design offers superior laser
protection and low noise, highstability performance. These
to four modules can be easily
modules also feature a photo- Up
adjusted and controlled from thediode measurement circuit for LDC-3900 front panel.
Powerful GPIB Interface
devices with backfacet monitor
For automated control, thephotodiode and analog modulation up to 500kHz
IEEE/GPIB interface allows programming andfor dithering the laser current for wavelength tuning.
readout from most computers. All instrument
Five different current source modules up to 8A canand module functions are accessible through thebe driven in any one of the following modes:
interface allowing you to simultaneously control
1) Constant current, low bandwidth
multiple laser diodes from the same address.
2) Constant current, high bandwidth
For virtual instrument programming, LabVIEW®
drivers are available upon request or through the3) Constant optical power
ILX website.

Highly Stable Temperature Control

The LDC-3900 TEC modules control temperature of your devices with 32W of power. These TEC
modules offer maximum flexibility with a choiceof operating modes and temperature sensors
covering thermistors, IC, and RTDs. A low noise,
biopolar output with TE voltage measurement andan ultra-stable topology achieves stabilities better
than 0.005°C. A smart integrator control loop, programmable from the front panel or through GPIB,
delivers fast settling times.

Controller Modules
Controller modules combine a current sourcewith a temperature controller in one module. Laser
current from 200mA to 2A is available with an
integrated 12W temperature controller for current* Semiconductor lasers are sensitive devices. Always
take appropriate antistatic precautions and use extreme
care when handling laser diodes. For more information,
request ILX Application Note #3, “Protecting Your Laser
Diode.”

LDC

Specifications
Current Source Modules1
Current Source1

39020

39050

39100

39400

3980014

0–200mA

0–500mA

0–1000mA

0–4000mA

0–8000mA

10µA±0.1% of FS
7V

10µA±0.1% of FS
6.5V

100µA
±0.1% of FS
6V

100µA
±0.1% of FS
5V

125µA
±0.1 % of FS
5V at connector<60ppm/°C<20ppm<50ppm<60ppm/°C<20ppm<40ppm<100ppm/°C<20ppm<40ppm<100ppm/°C<20ppm<40ppm<100ppm/°C<20ppm<40ppm

<3µA<2.5µA
<1µA

<5µA
<3µA
<1.5µA<10µA<5µA<2.5µA

<15µA
<5µA
<3µA

<120µA<110µA
N/A<1mA<5mA/<8mA

<1mA
<2mA
<5mA
<5mA/<8mA<5mA/<8mA<10mA/<20mA
All modules isolated from other modules and earth ground<8mA<20mA/<40mA

0–200mA
0.5mA±2mA

0–500mA
2mA±5mA

0–1000 mA
4mA
±10mA

0–4000mA
16mA
±40mA

0–8000mA
40mA
±80mA

Transimpedance
0–5V, adjustable
0–5mA
0.02%
±0.05% of FS

Transimpedance
0–5V, adjustable
0–5mA
0.02%
±0.05% of FS

Transimpedance
0–5V, adjustable
0–10mA
0.02%±0.05% of FS

Transimpedance
0–5V, adjustable
0–20mA
0.02%±0.1% of FS

Transimpedance
0–5V, adjustable
0–20mA
0.02%±0.1% of FS

0–10V, 10kΩ
20mA/V

0–10V, 10kΩ
50mA/V

0–10V, 10kΩ
100mA/V

0–10V, 10kΩ
400 mA/V

0–10V, 10kΩ
800mA/V

DC to 500kHz
DC to 5kHz
DC to 30Hz

DC to 200kHz
DC to 5kHz
DC to 30Hz

DC to 200kHz
DC to 5kHz
DC to 30Hz

DC to 50kHz
DC to 2kHz
DC to 30Hz

DC to 50kHz
DC to 2kHz
DC to 30Hz

9-pin, D-sub
Coax BNC
Coax BNC
inst. amp. input

9-pin, D-sub
Coax BNC
Coax BNC
inst. amp. input

9-pin, D-sub
Coax BNC
Coax BNC
inst. amp. input

9-pin, D-sub
Coax BNC
Coax BNC
inst. amp. input

16-pin, Bulkhead
Coax BNC
Coax BNC
inst. amp. input

0–200.00mA
0.01mA±0.05% of FS

0–500.00mA
0.01mA±0.1% of FS

0–1000.0mA
0.1mA±0.1% of FS

0–4000.0mA
0.1mA±0.1% of FS

0–8000.0mA
0.1mA±0.1% FS

0–5000µA
1µA±2µA

0–5000µA
1µA±2µA

0–10,000µA
1µA
±2µA

0–20,000µA
1µA
±4µA

0–20,000µA
1µA
±4µA

DRIVE CURRENT OUTPUT
Output Current Range:
Setpoint
Resolution:
Accuracy:
Compliance Voltage:(4.5V end of cable)

Temperature Coefficient:
Short-Term Stability (one-hour):2
Long-Term Stability (24 hours):3
Noise and Ripple (µA rms)4
High Bandwidth Mode:
Low Bandwidth Mode:
With LNF-320:5
Transients:
Operational:6
Power-line spike induced:7
Isolation:

DRIVE CURRENT LIMIT SETTINGS
Range:
Resolution:
Accuracy:

PHOTODIODE FEEDBACKType:
Reverse Bias:
Photodiode Current Range:
Output Stability:8
Setpoint Accuracy:

EXTERNAL ANALOG MODULATION
Input:
Transfer Function:
Bandwidth (3dB)
High Bandwidth:9
Low Bandwidth:
Low Bandwidth CW:5OUTPUT CONNECTORS
Current Source Output:
Photodiode Input:
Analog Modulation Input:

MEASUREMENT (DISPLAY)10
Output Current
Range:
Resolution:
Accuracy:11
Photodiode Current
Range:
Resolution:
Accuracy:11
Photodiode Responsivity
Range:12
Resolution:
Optical Power
Range:
Resolution:
Forward Voltage
Range:
Resolution:
Accuracy:13

CURRENT SOURCES NOTES
1
2
3
4
5
6

0.00–600.00µA/mW 0.00–600.00µA/mW 0.00–600.00µA/mW 0.00–600.00µA/mW
0.01µA/mW
0.01µA/mW
0.01µA/mW
0.01µA/mW

0.00–1000.00µA/mW
0.01µA/mW

0.00–200.00mW
0.01mW

0.00–500.00mW
0.1mW

0.00–1000.0mW
0.1mW

0.00–5000.0mW
0.1mW

0.00–8000.0mW
0.1mW

0.000–7.000V
1mV
±3mV

0.000–7.000V
1mV
±3mV

0.000– 7.000V
1mV
±3mV

0.000–5.000V
1 mV
±3mV

0.000–5.000V
1mV
±5mV

All values relate to a one-hour warm-up period.
Over any one-hour period, half-scale output at 25°C ambient.
Over any 24-hour period, half-scale output at 25°C ambient.
Measured optically from resulting intensity fluctuations of a laser diode with a
150kHz bandwidth photodetector. Measurements made with 1MHz detector are
typically 10% higher.
With model LNF-320 low noise CW filter enabled.
Maximum output current transient resulting from normal operational situations(i.e., power on-off, current on-off), as well as accidental situations(i.e., power line plug removal). For more information, request ILX "Transient Test
Standards” #LDC-00196.

7

Maximum output current transient resulting from a 1000V power line transient spike.
Tested to ILX Lightwave Technical Standard #LDC-00196.
Maximum monitor photodiode current drift over any 30 minute period. Assumes
zero drift in responsivity of photodiode.
9 50% modulation at mid-scale output.
10 Displayed on LDC-3900 mainframe front panel “LASER” section.
11 Measured at 25°C.
12 Responsivity value is user-defined and is used to calculate the optical power.
13 Voltage measurement accuracy while driving calibration load. Connected at therear panel connector. Accuracy may vary depending on load and cable length used.
14 Model 39800 8A module uses two rear-panel module bays.
83900
Modular Laser
Diode Controller

LDC

3900
Modular Laser
Diode Controller

LDC

Specifications
Product Features

TEC Modules1

39034
TEMPERATURE CONTROL
2

Temperature Control Range:
Thermistor Setpoint
Resolution and Accuracy:3–20°C to 20°C
20°C to 50°C
AD590 and LM335 Setpoint
Resolution and Accuracy:4–20°C to 50°C
Short Term Stability (one-hour.):5
Long Term Stability (24-hours):6

TEC OUTPUT7
Output Type:
Isolation:

Compliance Voltage:
Short Circuit Output Current:
Maximum Output Power:
Current Limit
Range:
Set Accuracy:
Ripple/ Noise:8Control Algorithm:

15

TEC OUTPUT CONNECTORS
Temperature Controller Output:–99.9°C to 199.9°C

Resolution
0.1°C
0.2°C

Accuracy±0.2°C±0.2°C

Resolution
0.01°C<±0.004°C<±0.01°C

Accuracy±0.1°C

Bipolar current source
Isolated from other modules and earth
ground
>8V
4A
32W
0–4A
±50mA
<1mA, rms
Smart Integrator, Hybrid PI

TEMPERATURE SENSOR

Types
Thermistor:
IC Temperature Sensor:
RTD Sensor:9
Thermistor Sensing Current:
Sensor Bias:

Usable Thermistor Range:
Typical Sensor Output10
AD590 Current Output:
LM335 Voltage Output:
RTD (PT100) Resistance:
User Calibration:

NTC (2-wire)
AD590/ LM335
Pt100/other 100 RTD
10/100µA
AD590 = 8V, LM335 = 1mA,
RTD = 0.8 mA925–450,000, typicalI (25°C) = 298.2µA, It = 1µA/K
V (25°C) = 2.73V, Vt = 10mV/K
R (25°C) = 109.73
Thermistor = Steinhart-Hart
IC Sensors, RTD = Two-point

MAINFRAME/GENERAL
Chassis Ground:Power Requirements,
50–60Hz:(user selectable)
Size (HxWxD):

WeightMainframe:
Module (each, typical):Operating Temperature:
Storage Temperature:
Humidity:
Laser Safety Features:
Laser Display:
TEC Display:

4mm Banana jack
100VAC, 120VAC, 220VAC,
240VAC, (+6%/-10%)145mm x 426mm x 346mm(5 5/8" x 16 3/4" x 13 5/8")
12.5kg (27.5lbs)
1.0 kg (2.3lbs)
0°C to 50°C
–40 to 70°C
<90%, noncondensing
Keyswitch, Interlock, Output Delay(Meets CDRH US21 CFR 1040.10)
5-digit, Green LED
5-digit, Green LED

ORDERING INFORMATION NOTES**

Includes ILX model LTS-520 calibrated 10k thermistor.

In keeping with our commitment to continuing improvement, ILX Lightwave reserves the right to change
specifications at any time without notice and with out liability for such changes.

15-pin, D-sub

TEC MEASUREMENT (DISPLAY)11

Temperature:
10µA Setting:13
100µA Setting:14
Thermistor Resistance:
10µA Setting:
100µA Setting:
TE Current:

Range12–99.99°C to 199.99°C–99.99°C to 199.99°C

Resolution
0.01°C
0.01°C

Accuracy±0.1°C±0.05°C

0.0–480.00k
0.0–48.000k–4.000 to 4.000A

0.01k
0.001k0.001A±0.05%±0.05%±0.04ATE VOLTAGE15
Voltage Range:
Voltage Resolution:
Voltage Accuracy:–9.999 to 9.999V
1mV±30mV16

TEC MODULE NOTES:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16

All values relate to a one-hour warm-up period.
Software limits of range. Actual range possible depends on the physical load, thermis
tor type, and TE module used.
Accuracy figures are quoted for a typical 10k thermistor and 100µA current setting.
Accuracy figures are relative to the calibration standard. Both resolution and accuracy
are dependent upon the user-defined configuration of the instrument.
Accuracy depends upon the the sensor model selected, the calibration standard,
and the user-defined configuration of the instrument.
Over any one-hour period, half-scale output, controlling an LDM-4412 mount at 25°C,
with 10k thermistor on 100µA setting.
Over any 24-hour period, half-scale output, controlling an LDM-4412 mount at 25°C,
with 10k thermistor on 100µA setting.
Into a 1 load.
Measured at 1A output over a bandwidth of 10Hz to 10MHz.
To use RTD sensors with model 39034, order TSC-599 Temperature Sensor Converter
accessory.
Nominal temperature coefficients, It and Vt, apply over the rated IC temperature
sensor range.
Displayed on LDC-3900 mainframe front panel “TEC” section.
Software limits of display range.
Using a 100k thermistor, controlling an LDM-4412 mount over –30°C to 25°C.
Using a 10k thermistor, controlling an LDM-4412 mount over 0°C to 90°C.
Model 39034 has TEC Voltage measurement through GPIB only.
Voltage measurement accuracy while driving calibration load. Accuracy is dependent
upon load used.

LD controller modules from
200mA to 2A with integrated 12W
TEC
32W TEC only modules with
voltage measurement
TEC modules accept thermistor,
IC and RTD temperature sensors
Standard GPIB IEEE interface

LDC-3900
CSM-39020
CSM-39050
CSM-39100
CSM-39400
CMS-39800
TCM-39034**
LCM-39420
LCM-39425
LCM-39427

Modular Laser Diode Controller Mainframe
200mA Current Source Module
500mA Current Source Module
1A Current Source Module
4A Current Source Module
8A Current Source Module (Module take two slots in LDC-3900)
32W TEC Module with Voltage Measurement
Current/TEC Combination Module (200mA Drive Current/8W TEC)
Current/TEC Combination Module (500mA Drive Current/12W TEC)
Current/TEC Combination Module (500mA Drive Current/12W TEC)
with Modulation
LCM-39437
Current/TEC Combination Module (1A Drive Current/12 W TEC) with
Modulation
LCM-39440
Current/TEC Combination Module (2A Drive Current/8W TEC)
CC-305S
Current Source/Laser Diode Mount Interconnect Cable
CC-306S
Current Source/Unterminated Interconnect Cable
CC-501STE Controller/Unterminated Interconnect Cable
CC-505STE Controller/Laser Diode Mount Interconnect Cable
TS-510Calibrated 10kThermistor
TS-520Uncalibrated 10k Thermistor
TS-530Uncalibrated AD590LH IC Temperature Sensor
TS-540Uncalibrated LM335AH IC Temperature Sensor
TSC-595
RTD Temperature Sensor Control Option (for 39032 Module)
RM-103
Rack Mounting Kit
UCA-350
Unipolar Heater Control Adapter
LNF-320
Low Noise Filter
LabVIEW®Instrument Driver

Flexible, Comprehensive Controlof Laser Diodes

1-800-459-9459
www.ilxlightwave.com

Laser current source modules
from 200mA to 8A

The LDC-3900 Modular Laser Diode Controller features
four channels with eight isolated outputs for controlling
multiple laser diodes. Modules include current sources withmaximum outputs from 200mA to 8A, TE (thermoelectric)
controller modules with up to 32W of power and voltage
measurement, and controller modules with laser control
from 200mA to 2A and integrated 12W TE control.
An independent power supply powers each channel,
providing protection and stability for your laser diode. Every
module incorporates low noise, high stability performance,and ILX Lightwave’s unmatched laser diode protection
topologies including independent current limits and laser
diode shorting relays.
Remote communication through an IEEE/GPIB interface
simplifies testing and control of multiple devices. LabVIEW®
drivers are also available for any combination of mainframe
and module.

ORDERING INFORMATION

For information call
P.O. Box 6310, Bozeman, MT 59771•FAX: 406-586-9405

4 Independent Channels with 8
isolated outputs

International Inquiries: 406-5856-2481
email: sales@ilxlightwave.com

REV03.120709

3900
Modular Laser
Diode Controller

LDC

Specifications
Combination Modules

39420

39425

39427

39437

3900

39440

ISOLATION: Each module is isolated from other modules and earth ground. TEC and current source independently isolated
OUTPUT CONNECTORS
Laser Drive Current I/O:
Temperature Controller I/O:

9-pin, D-sub
15-pin, D-sub

9-pin, D-sub
15-pin, D-sub

9-pin, D-sub
15-pin, D-sub

9-pin, D-sub
15-pin, D-sub

9-pin, D-sub
15-pin, D-sub

0–500mA

0–500mA

0–1000mA

0–2000mA

10µA±0.05% of FS
6V
100ppm/°C
25ppm
50ppm

10µA
±0.05% of FS
6V
100ppm/°C
25ppm
50ppm

100µA
±0.05% of FS
6V
100ppm/°C
25ppm
50ppm

100µA
±0.05% of FS
5V
100ppm/°C
25ppm
50ppm

<4µA
<1.5µA<4µA<1.5µA<4µA<1.5µA

<10µA
<2µA

<1mA
<4mA
<7mA

<1mA
<4mA
<7mA

<1mA
<4mA
<7mA

<1mA
<10mA
<8mA

0–200mA±2mA

0–500mA±5mA

0–500mA±5mA

0–1000mA±10mA

0–2000mA±20mA

20–2000µA
±2µA
±2µA

Current input differential, zero bias, all modules
20–2000µA
20–4000µA
20–4000µA
±2µA
N/A
N/A
±2µA
N/A
N/A

20–5000µA
±2µA
±5µA

N/A
N/A
N/A

0–10V, 10kΩ
100mA/V
DC to 200kHz

N/A
N/A
N/A

0–1000.00mA
0.01mA±0.5mA
0–4000µA
1µA
0.00–1000.00µA/mW
0.01µA/mW
0.00–1000.00mW
10µW

0– 2000.0mA
0.1mA
±1mA
0–5000µA
1µA
0.00–1000.00µA/mW
0.01µA/mW
0.00–2000.0mW
100µW–99.9°C to 99.9°C–99.9°C to 99.9°C

DRIVE CURRENT OUTPUT1
Output Current Range:90–200mA
Setpoint
Resolution:
10µA
Accuracy:±0.05% of FS
Compliance Voltage:
6V
Temperature Coefficient:
100ppm/°C2
Short-Term Stability (one-hour): 25ppm
Long-Term Stability (24 hours):3 50ppm
Noise and Ripple (µA/rms)4
Unfiltered:<2.5µA
With model 320 Filter:5<1µA
Transients:
Operational:6<1mA
1kV EFT:<4mA
7Surge:<7mA

DRIVE CURRENT LIMIT SETTINGS
Range:
Accuracy:

PHOTODIODE FEEDBACK
Type:
Range:
Output Stability8:
Setpoint Accuracy:

EXTERNAL ANALOG MODULATION
Input:
Transfer Function:
Bandwidth (3dB):

N/A
N/A
N/A

0–10V, 10kΩ
50mA/VDC to 250kHz

DRIVE CURRENT MEASUREMENT (DISPLAY)
Output Current Range:
Output Current Resolution:
Output Current Accuracy:10
Photodiode Current Range:
PD Current Resolution:
PD Responsivity Range:
PD Responsivity Resolution:
Optical Power Range:
Optical Power Resolution:

0–200.00mA
0–500.00mA
0–500.00mA
0.01mA
0.01mA
0.01mA±0.1mA±0.5mA±0.5mA
0–2000µA
0–2000µA
0–4000µA
1µA
1µA
1µA
0.00–1000.00µA/mW 0.00–1000.00µA/mW 0.00–1000.00µA/mW
0.01µA/mW
0.01µA/mW
0.01µA/mW
0.00–200.00mW
0.00–200.00mW
0.00–1000.00mW
10µW
10µW
10µW

TEMPERATURE CONTROL OUTPUT9
Temperature Control Range:11
Thermistor Setpoint
Resolution and Accuracy12–20°C to +20°C:+20°C to +50°C:
Short Term Stability (1 hr.):13
Long Term Stability (24 hrs.):14
Output Type:
Compliance Voltage:
Short Circuit Output Current:
Maximum Output Power:
Current Noise and Ripple:
Current Limit Range:
Current Limit Set Accuracy:
Control Algorithm:–99.9°C to 99.9°C–99.9°C to 99.9°C

Res.
Acc.
0.1°C ±0.2°C
0.2°C ±0.2° C<±0.05°C<±0.1° C

Res.
Acc.
Res.
Acc.
Res. Acc.
0.1°C ±0.2°C
0.1°C ±0.2°C
0.1°C ±0.2°C
0.2°C ±0.2°C
0.2°C ±0.2°C
0.2°C ±0.2°C<±0.05°C<± 0.05°C<±0.05°C<±0.1°C<±0.1°C<±0.1°C
Bipolar, constant current source, all modules>6V DC>6V DC>6V DC
2A
2A
2A
12W
12W
12W
<1mA rms<1mA rms<1mA rms
0–2A
0–2A
0–2A
0.05A
0.05A
0.05A
Smart Integrator, Hybrid PI, all modules>4V DC
2A
8W<1mA rms
0–2A
0.05A

–99.9°C to 99.9°C

Res.
0.1°C
0.2°C
<±0.05°C<±0.1°C>4V DC
2A
8W<1mA rms
0–2A
0.05A

Acc.
±0.2°C±0.2°C

Modular Laser
Diode Controller

LDC

3900
Modular Laser
Diode Controller

Specifications
39420

39425

39427

39437

39440

Thermistor(2-wire NTC)
10/100µA(user-selectable)
25–450,000Ω
typicalSteinhart-Hart

Thermistor(2-wire NTC)
10/100µA(user-selectable)
25–450,000Ω
typicalSteinhart-Hart

Thermistor(2-wire NTC)
10/100µA(user-selectable)
25–450,000Ω
typicalSteinhart-Hart

Thermistor(2-wire NTC)
10/100µA(user-selectable)
25–450,000Ω
typicalSteinhart-Hart

Thermistor(2-wire NTC)
10/100µA(user-selectable)
25–450,000Ω
typicalSteinhart-Hart–99.9°C to 99.9°C–99.9 °C to 99.9°C–99.9 °C to 99.9°C–99.9 °C to 99.9°C–99.9 °C to 99.9°C

0.00–450.00kΩ
0.000–45.000kΩ–2.000 to 2.000A

0.00–450.00kΩ
0.000–45.000kΩ–2.000 to 2.000A

0.00–450.00kΩ
0.000–45.000kΩ–2.000 to 2.000A

0.00–450.00kΩ
0.000–45.000kΩ–2.000 to 2.000A

0.00–450.00kΩ
0.000–45.000kΩ–2.000 to 2.000A±0.5°C±0.5°C±0.5°C±0.5°C±0.5°C±0.05kΩ±0.005kΩ±0.01A±0.05kΩ±0.005kΩ±0.01A±0.05kΩ±0.005kΩ±0.01A±0.05kΩ±0.005kΩ±0.01A±0.05kΩ±0.005kΩ±0.01ATEMPERATURE SENSOR
Types:
Thermistor Sensing Current:
Usable Thermistor Range:
User Calibration:

TEC MEASUREMENT (DISPLAY)
Range
Temperature:
Thermistor Resistance
10µA Setting:
100µA Setting:
TE Current:
Accuracy
Temperature:
Thermistor Resistance
10µA Setting:
100µA Setting:
TE Current:

COMBINATION MODULES NOTES:
1
2
3
4

5
6

7
8
9

All values measured after a one-hour warm-up period.
Over any one-hour period, half-scale output.
Over any 24-hour period, half-scale output.
Measured from resulting intensity fluctuations of a laser diode,measured optically with a 150kHz bandwidth photodetector.
Measurements made with 1MHz detector are typically 10%
higher.
ILX Lightwave model LNF-320 low-noise filter option may be
used if lower noise performance is required.
Maximum output current transient resulting from normal
operational situations (e.g., power on-off), as well as accidental
situations (e.g., power line plug removal). For more information
request ILX "Transient Test Standards" #LDC-00196.
Maximum output current transient resulting from a 1000V
power line transient spike. Tested to ILX Lightwave
Technical Standard #LDC-00196.
Maximum monitor photodiode current drift over any 30-minuteperiod. Constant-power mode stability specification assumes
zero drift in detector responsivity.
Output current rated into a 1Ω load.

10 Measured at 25°C.
11 Software limits of range.
12 Accuracy figures quoted for a 10kΩ thermistor. Accuracy figures are relative to calibration standard. Both resolution andaccuracy are dependent on the user-defined configuration of
the instrument.
13 Over any one-hour period at 25°C. Short-term temperaturestability is a strong function of the thermal environment of thethermistor and TE module. Room air currents in particular caneasily cause fluctuations of 0.1°C in an exposed mounting configuration.
14 Over any 24-hour period at 25°C.

In keeping with our commitment to continuing improvement, ILX Lightwave
reserves the right to change specifications without notice and without liability forsuch changes.

For information call

1-800-459-9459
P.O. Box 6310 Bozeman, MT 59771 • FAX: 406-586-9405

www.ilxlightwave.com

International Inquiries: 406-556-2481

email: sales@ilxlightwave.com

REV02.092006