LDC
3916
16-Channel
Laser Diode
Controller

Specifications
GENERAL

Accessories

Chassis Ground:
GPIB Connector:
RS-232 Connector:
Power Requirements:1
Size (HxWxD):

4mm Banana Jack
24-pin IEEE-488
9–pin D–sub
100 VAC ±10%, 15A
120 VAC ±10%, 12A
200-240 VAC ±10%, 6A
133mm x 482mm x 653mm
5.25” x 18.98" x 25.7"

Weight (typical)
Mainframe Only:
20kg (44lbs)
With Modules:
27kg (59lbs)
Operating Temperature: 0°C to 40°C
Storage Temperature: –40°C to 70°C
Humidity:2
20–85%, non condensing
Laser Safety Features: Keyswitch, Interlock, Output Delay:(Meets 21 CFR 1040.10)
Display:
Vacuum fluorescent,
64 x 128 pixels
83mm x 41mm

NOTES
1
2

Product Features

All channels driving 6A.
Based on the vacuum fluorescent display specification.

This product has passed all CE requirements and bears the CE mark.

LNF-320
LDM-4616
UCA-350
RM-137
RM-138TS-510

Low Noise Filter
16-Channel Butterfly Mount
Unipolar Heater Control Adapter
Rack Mount Kit, 20.5" hole spacing
Rack Mount Kit, 25" hole spacing
Calibrated 10kThermistor(-20°C to +50°C)
TS-520Uncalibrated 10k Thermistor(-20°C to +50°C)
TS-521
Uncalibrated 5k Thermistor(-45°C to +30°C)
TS-523
Uncalibrated 20k Thermistor(-10°C to +70°C)
TS-525
Uncalibrated 100k Thermistor(-10°C to +110°C)
LabVIEW® Instrument Driver
LabVIEW® is a registered trademark of National Instruments.

3926339 and 3926559 Module Cables
CC-306H
CC-501H

3916 Series Module Cables
CC-305S

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

CC-306S
CC-355S
CC-550S

ORDERING INFORMATION
LDC-3926
LDC-3926339
LDC-3926559
LDC-3916371
LDC-3916372
LDC-3916374
LDC-3916376
LDC-3916332
LDC-3916334
LDC-3916338
LDC-3916550
LDC-3916558

16-Channel High Power
Laser Diode Controller Mainframe
6A Current Source Module
48W, 6A TEC Temperature Control
ModuleFine Temperature Resolution
500mA/9W Controller Module
500mA/9W Controller Module
1A/9W Controller Module
1.5A/9W Controller Module
500mA/500mA Dual Current
Source Module
1A Dual Current Source Module
3A Current Source Module
9W Dual TEC Temperature
Control Module
3A (24W) TEC Temperature
Control Module

6A Current Source/UnterminatedInterconnect Cable
Low-R TEC/UnterminatedInterconnect Cable

CC-316M
CC-501S
CC-505S
CC-516M

Current Source/Laser Diode Mount
Interconnect Cable
Current Source/UnterminatedInterconnect Cable
Current Source/Laser Diode Mount
Interconnect Cable (5 meters)
TE Controller/Laser Diode Mount
Interconnect Cable (5 meters)
Laser Current Cables (bundle of 8)
TEC/Unterminated Interconnect
Cable
TEC/Laser Diode Mount
Interconnect CableTEC Cables (bundle of 8)

Dual channel laser current or
temperature control modules for control
of up to 32 laser diodes with one
mainframe
Laser current sources feature low
noise and high stability and operate
in constant current or constant power
operating modes with direct modulation
up to 1 MHz
Temperature controllers operate inconstant temperature or constantresistance mode with expanded gain
setting from 1 to 127
GPIB/IEEE488 or RS-232 remotecontrol interface

16 Channels of Laser Diode Control
1-800-459-9459

www.ilxlightwave.com

Wide variety of laser controller modules(current and temperature) with up to 3A
available per channel

The LDC-3916 Laser Diode Controller offers 16 channelsof laser diode current source and temperature control in aspace saving rack mountable instrument for simultaneouscontrol of both current and temperature of up to 16 laser
diodes in one mainframe. ILX Lightwave developed theLDC-3916 for multiple pump control in optical amplifier
testing. The high stability, low noise current and temperature
controllers also make the 3916 suitable for low-channel
count burn-in systems or, coupled with ILX’s 16-channel
laser diode mount, a 16 channel DFB source bank.
A wide variety of laser control modules are available
including laser controller modules, dual channel laser
current source, and dual channel temperature control
modules. Controller modules source up to 1.5A of laser
current with an integrated 9W temperature controller. Duallaser current source modules, with two isolated outputs,
source up to 1A per channel, while dual temperature control
modules provide two independent 9W outputs for control of
up to 32 laser diodes per mainframe.
Remote operation for independent control of all 16
channels is provided through an IEEE488 GPIB interface
or RS-232 serial interface.

This product has passed all CE requirements and bears the CE mark.

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

16 independent, isolated channels forlaser and TEC control

International Inquiries: 406-556-2481
email: sales@ilxlightwave.com

REV03.082609

LDC
3916
16-Channel
Laser Diode
Controller

LDC
3916
16-Channel
Laser Diode
Controller

Dual Current Source Modules*

Front Panel Interface Provides
Simple Operation
The bright vacuum fluorescent display isreadable from almost any angle. Status screensshow four channels at once and scroll both
directions to easily view any channel. You canmonitor operations, change setpoints, and turn
any output on or off from the status menu. Plus,
you can define any two parameters displayed on
the status screen for each channel.
For initial or detailed setup, simple andintuitive menus supported by screen-specificsoft keys quickly configure and operate eachchannel. Menu depths have been limited tokeep the front panel operation concise, whilemore sophisticated operations are reserved
for the GPIB interface. An “All Channel” menu
facilitates initial setup, and 10 storage bins allow
you to save and recall all instrument settings.
Setpoints and other values can be entered througha numeric keypad, up/down arrow keys, or therotary adjustment knob.

Powerful GPIB Interface
A powerful master processor platform drives the
LDC-3916 controller, communicating with all sixteen
microprocessor-controlled modules. When coupledwith the HS488TNT chipset GPIB technology
from National Instruments ®, the LDC-3916
provides all of the necessary processing
capabilities for automated production testing. With
microprocessors on each module, the mainframe
master manages 16 independent control channels
quickly and reliably. Free LabVIEW® instrument
drivers are available at www.ilxlightwave.com.

Support Future System Expansion
Designed to provide the most efficientand safest control available for multiple laser
diodes, each module’s control functions are

CURRENT SOURCE1
managed locally and communicated to the masterprocessor. On-board intelligence simplifies
future addition of modules since all operationaland calibration data is stored in the module.
Simply plug in the new module and power up
the system. The mainframe never needs to leave
the rack.

State-of-the-Art Laser Diode
Current Source
The LDC-3926 current source topology
uses an innovative, proprietary control loop andincorporates the latest techniques for signal
filtering and circuit board shielding. Adjustable
voltage limit and faster shutoff help prevent
dangerous reconnect transients that can occur
from intermittent connections between controller
and laser diode. Investment in this instrument
provides assurance for safe, worry-free testing
and control of higher power laser diodes.
Operational modes including constantcurrent in low or high bandwidth or constant
optical power are selectable from the front panel
or via the remote interface. Measurement of
the laser diode forward voltage is provided with
4-wire accuracy for production environments
where longer cable runs are common. A single,
rear panel modulation port provides directmodulation of each channel’s laser current andsupports external modulation bandwidths of up to
1MHz (lower current modules). Individual channel
modulation ports are available on request.

3916332
Dual 500mA

3916334
Dual 1A

0–500mA

0–1000mA

10µA±0.1% of FS
6V (adjustable voltage limit)<50ppm/°C<20ppm<50ppm20µA±0.1% of FS
6V (adjustable voltage limit)<50ppm/°C<20ppm<50ppm<30µA rms
<24µA rms

<24µA rms
<22µA rms

<3mA
<4mA
<8mA

<3mA
<5mA
<10mA

0–500mA
0.2mA±0.7mA

0–1000mA
0.4mA±1.4mA

0–7.5V
0.1V±0.2V

0–7.5V
0.1V±0.2V

Differential 10 Input
Selectable Zero Bias or 5V
Reverse Bias
0–5000µA
0.01%±0.1% of FS

Differential 10Input
Selectable Zero Bias or 5V
Reverse Bias
0–5000µA
0.01%±0.1% of FS

0–10V, 50
50mA/V

0–10V, 50
100mA/V

DC to 1.2MHz
DC to 1.0MHz
DC to 30kHz

DC to 1.0MHz
DC to 1.0MHz
DC to 30kHz

LASER CURRENT OUTPUT
Output Current Range:
Setpoint
Resolution:
Accuracy:
Compliance Voltage:
Temperature Coefficient:
Short-Term Stability (one-hour):2
Long-Term Stability (24-hours):3
Noise and Ripple4
High Bandwidth:
Low Bandwidth:
Transients
Operational:5
1kV EFT:6
Surge:LASER DRIVE LIMIT SETTINGS
Current Limit
Range:
Resolution:
Accuracy:
Voltage Limit
Range:
Resolution:
Accuracy:

PHOTODIODE FEEDBACKType:

Photodiode Current Range:
Output Stability:7
Setpoint Accuracy:

EXTERNAL ANALOG MODULATION
Input:8
Transfer Function:
High Bandwidth Mode
Small Signal Bandwidth:9Large Signal Bandwidth:10
Low Bandwidth Mode:

LASER CURRENT MEASUREMENT (DISPLAY)
Output Current
Range:
Resolution:
Accuracy (at 25°C):
Photodiode Current
Range:
Resolution:
Accuracy (at 25°C):
Photodiode Responsivity
Range:11
Resolution:
Optical Power
Range:
Resolution:
Forward Voltage
Range:
Resolution:12
Accuracy:13

0–500.0mA
0.01mA±0.05% of FS

0–1000.0mA
0.01mA±0.05% of FS

0–5000µA
0.1µA
±2µA

0–5000µA
0.1µA
±2 µA

0.00–1000.00µA/mW
0.01µA/mW

0.00–1000.00µA/mW
0.01µA/mW

0.0– 5000.00mW
100µW

0.0– 5000.00mW
100µW

0.00– 7.5V
10mV
±7mV

0.0– 7.5V
10mV
±7mV

DUAL CURRENT SOURCE NOTES*Two isolated laser sources in each module.
1 All values relate to a one-hour warm-up period.
2 Over any one-hour period, half-scale output.
3 Over any 24-hour period, half-scale output.
4 Measured optically, evaluating noise intensity of a laser diode into a photodetector with 160kHz bandwidth.
5 Maximum output current transient resulting from normal operational situations (e.g. power on-off, current on-off), as well as accidental situations (e.g. powerline plug removal).
6 Maximum output current transient resulting from a 1000V power-line transient spike. Tested to ILX Lightwave Technical Standard #LDC-00196. Request ILX
Application Note #3, “Protecting Your Laser Diode.”
7 Maximum monitor photodiode current drift over any 30-minute period. Assumes zero drift in responsivity of photodiode.
8 Modulation input is 50 terminated inside the mainframe.
9 250mA setpoint, 50mA modulation current, 1 load.
10 50% modulation at mid-scale output, 1load.
11 Responsivity value is user-defined and is used to calculate the optical power.
12 1mV through GPIB interface.

LDC
3916
16-Channel
Laser Diode
Controller

LDC
3916
16-Channel
Laser Diode
Controller

LDC
3916

Controller Modules (Laser and TE Control)continued
3916372
TEMPERATURE CONTROL1 500mA/9W

39163743916376

1A/9W

1.5A/9W–99°C to 150°C
Resolution Accuracy3
0.1°C±0.2°C
0.2°C±0.2°C<±0.007°C<±0.01°C
Bipolar current source>7V DC
1.5A
9W<1mA rms–99°C to 150°C
Resolution Accuracy3
0.1°C±0.2°C
0.2°C±0.2°C<±0.007°C<±0.01°C
Bipolar current source>7V DC
1.5A
9W<1mA rms–99°C to 150°C
Resolution
Accuracy3
0.1°C±0.2°C
0.2°C±0.2°C<±0.007°C<±0.01°C
Bipolar current source>7V DC
1.5A
9W<1mA rms

0–1.5A±0.05A
Smart Integrator,
Hybrid PI
Gain adjustablefrom 1–127

0–1.5A±0.05A
Smart Integrator,
Hybrid PI
Gain adjustablefrom 1–127

0–1.5A±0.05A
Smart Integrator,
Hybrid PI
Gain adjustablefrom 1–127

Thermistor (2-wire NTC)
10/100µA
25–450,000, typical
Steinhart-Hart, 3 constants

Thermistor (2-wire NTC)
10/100µA
25–450,000, typical
Steinhart-Hart, 3 constants

Thermistor (2-wire NTC)
10/100µA
25–450,000, typical
Steinhart-Hart, 3 constants–99.9°C to 199.9°C±0.5°C–99.9°C to 199.9°C±0.5°COUTPUT
Temperature Control Range:2
Thermistor Setpoint:–20°C to 20°C:
20°C–50°C:
Short-Term Stability (one-hour):4
Long-Term Stability (24-hours):5
Output Type:
Compliance Voltage:
Short Circuit Output Current:
Maximum Output Power:
Current Noise and Ripple:6
Current Limit
Range:
Accuracy:
Control Algorithm:

TEMPERATURE SENSOR
Types:
Thermistor Sensing Current:7
Usable Thermistor Range:
User Calibration:

TEC MEASUREMENT (DISPLAY)
Temperature:
Range:8
Accuracy:
Thermistor Resistance
10µA Setting
Range:
Accuracy:9
100µASetting
Range:
Accuracy:10
TEC Current
Range:
Accuracy:
Current Resolution:
Voltage
Range:
Resolution:11
Accuracy:12–99.9°C to 199.9°C±0.5°C

0.01–450.00k±0.05k0.01–450.00k±0.05k0.01–450.00k±0.05k0.001–45.000k
±0.005k

0.001–45.000k
±0.005k

0.001–45.000k
±0.005k

–1.50 to 1.50A±0.04A±0.01A–1.50 to 1.50A±0.04A±0.01A–1.50 to 1.50A±0.04A±0.01A–9.999 to 9.999V
100mV
±70mV

–9.999 to 9.999V
100mV
±70mV

–9.999 to 9.999V
100mV
±70mV

CONTROLLER MODULE TEMPERATURE CONTROL NOTES
1
2
3

4
5
6
7
8
9
10
11
12

All values relate to a one-hour warm-up period.
Software limits of range. Actual range possible depends on the physical load, thermistor type, and TEC module used.
Accuracy figures are quoted for a typical 10k thermistor and 100µA current setting for –5°C to 50°C, and typical 10k thermistor and 10µA current settingfor –20°C to –5°C. Accuracy figures are relative to the calibration standard. Both resolution and accuracy are dependent upon the user-defined configurationof 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.
Measured at 1A output over a bandwidth of 10Hz to 10MHz. 3916558 Module noise measured at 2A output over a bandwidth of DC to 25MHz
Thermistor current range software selectable by front panel or GPIB. (10µA range not available for 3916371.)
Software limits of display range.
Using a 10k thermistor, controlling an LDM-4412 mount over –30°C to 65°C (~200–2k) or a 100k thermistor controlling an LDM-4412 mount over
10°C–85°C (~200–10k).
Using a 10k thermistor, controlling an LDM-4412 mount over –5°C to 90°C (~45–1k).
Resolution 1mV through GPIB interface.
Voltage measurement accuracy while driving calibration load. Accuracy is dependent upon load used. Accuracy of ±20mV through GPIB interface.

When coupled with the LDM-4616 Modular Laser Diode Mount,the LDC-3916 Multi-channel controller provides a configurable,
cost-effective solution for multi-channel, DWDM signal sources.
This mount can also support many popular 980nm and1480nm pump laser diodes for EDFA test applications.

16-Channel
Laser Diode
ControllerHigh Channel Density Laser Diode
Control for Production Test
High Stability TEC Control
Achieve up to ±0.007°C temperature stability
with the low noise temperature controller
modules. The temperature control circuits
optimize temperature settling times with a smart
integrator control loop with expanded gain
setting ranges. All TEC control modules for
the LDC-3916 include voltage measurement
capabilities and internal thermistor current
selection via front panel or remotely for control
over a wide temperature range.

Flexible Control Over a Wide
Range of Applications
By combining true modularity and high channel
density, the LDC-3916 easily adapts to a wide
variety of applications. This system can be used
for controlling multiple pump lasers in amplifier
test or low channel count burn-in applications.
When coupled with ILX’s LDM-4616 16-channel
laser diode mount, the LDC-3916 can provide
a cost effective DWDM optical source test set.
For picometer tuning of wavelengths, select the
LDC-3916371 module with 0.01°C temperature
setpoint resolution.

Protect Your Investment with theLeaders in Laser Diode Protection
The LDC-3916 provides all of ILX Lightwave’s
proven laser protection features like independent
current limits, slow-start turn-on circuits, andisolated power supplies. The adjustable laser
voltage limit brings even greater levels ofprotection. If a temperature limit is reached,
the TEC Temperature control modules can be
programmed to turn off any or all lasers in a
mainframe.
Designed for production test, the LDC-3916 will
satisfy higher power multiple laser diode operation
with reliable and secure control.

LDC
3916
16-Channel
Laser Diode
Controller

Specifications1Fine Temperature Resolution Controller Module
TEMPERATURE CONTROL1CURRENT SOURCE1
39163713916371

500mA/9W

500mA/9W

LASER CURRENT OUTPUT
Output Current Range:
Setpoint
Resolution:
Accuracy:
Compliance Voltage:
Temperature Coefficient:
Short-Term Stability (one-hour):2
Long-Term Stability (24-hour):3
Noise and Ripple4
High Bandwidth:
Low Bandwidth:
Transients
Operational:5
1kV EFT:6
Surge:

0–500mA
10µA±0.1% of FS
6V (adjustable voltage limit)<50ppm/°C<20ppm<50ppm<30µA rms
<24µA rms
<3mA
<4mA
<8mA

LASER DRIVE LIMIT SETTINGS
Current Limit
Range:
Resolution:
Accuracy:
Voltage Limit
Range:
Resolution:
Accuracy:

0–500mA
0.2mA±0.7mA
0–7.5V
0.1V±0.2V

PHOTODIODE FEEDBACKType:

Photodiode Current Range:
Output Stability:7
Setpoint Accuracy:

Differential 10 Input.
Selectable Zero Bias
or 5V Reverse Bias
0–5000µA
0.01%±0.1% of FS

EXTERNAL ANALOG MODULATION
Input:8
Transfer Function:
High Bandwidth Mode
Small Signal Bandwidth:9Large Signal Bandwidth:10
Low Bandwidth Mode

0–10V, 50
50mA/VDC to 1.2MHz
DC to 1.0MHz
DC to 30kHz

LASER CURRENT MEASUREMENT(DISPLAY)
Output Current
Range:
Resolution:
Accuracy (at 25°C):
Photodiode Current
Range:11
Resolution:
Accuracy (at 25°C):
Photodiode Responsivity
Range:11
Resolution:
Range:
Optical Power Resolution:
Forward Voltage
Range:
Resolution:12
Accuracy:13

0–500.00mA
0.01mA±0.05% of FS
0–5000µA
0.1µA±2µA
0.00–1000.00µA/mW
0.01µA/mW
0.00–5000.0mW
100µW
0.00–7.5V
10mV
±7mV

TEMPERATURE CONTROL OUTPUT
Temperature Control Range:2
Thermistor Setpoint
Resolution:
Accuracy:3
Short-Term Stability (one-hour):4
Long-Term Stability (24-hours):5
Output Type:
Compliance Voltage:
Maximum Output Current:
Maximum Output Power:
Current Noise and Ripple:6
Current Limit
Range:
Accuracy:
Control Algorithm:-5°C to 50°C
0.01°C±0.2°C<±0.007°C<±0.01°C
Bipolar current source>7V DC
1.5A
9W<1mA rms
0–1.5A±0.05A
Smart Integrator, Hybrid PI,
Gain adjustable from 1–127

TEMPERATURE SENSOR
Types:
Thermistor Sensing Current:7
Usable Thermistor Range:
User Calibration:

Thermistor (2-wire NTC)
100µA
3.5 to 45 k
Steinhart-Hart, 3 constants

TEC MEASUREMENT (DISPLAY)
Temperature
Range:8
Accuracy:3
Thermistor Resistance
100µA Setting
Range:
Accuracy:10
TEC Current
Range:
Accuracy:
Voltage
Range:
Resolution:11
Accuracy:12–99.9°C to 199.9°C±0.5°C

3.5 to 45 k
±5–1.50 to 1.50A±0.04A–9.999 to 9.999V
100mV
±70mV

NOTES
The 3916371 Current Source and Temperature Control notes areon the following pages.

Controller Modules (Laser and TE Control)
CURRENT SOURCE1

391637239163743916376

500mA/9W

1A/9W

1.5A/9W

0–500mA

0–1000mA

0–1500mA

10µA±0.1% of FS
6V (adjustable voltage limit)<50ppm/°C<20ppm<50ppm20µA±0.1% of FS
6V (adjustable voltage limit)<50ppm/°C<20ppm<50ppm40µA±0.1% of FS
4.75V (adjustable voltage limit)<50ppm/°C<20ppm<50ppm<30µA rms
<24µA rms

<24µA rms
<22µA rms

<24µA rms
<20µA rms

<3mA
<4mA
<8mA

<3mA
<5mA
<10mA

<3mA
<5mA
<10mA

0–500mA
0.2mA±0.7mA

0–1000mA
0.4mA±1.4mA

0–1500mA
0.6mA±4.5mA

0–7.5V
0.1V±0.2V

0–7.5V
0.1V±0.2V

0–7.5V
0.1V±0.2V

LASER CURRENT OUTPUT
Output Current Range:
Setpoint
Resolution:
Accuracy:
Compliance Voltage:
Temperature Coefficient:
Short-Term Stability (one-hour):2
Long-Term Stability (24-hours):3
Noise and Ripple4
High Bandwidth:
Low Bandwidth:
Transients
Operational:5
1 kV EFT:6
Surge:LASER DRIVE LIMIT SETTINGS
Current Limit
Range:
Resolution:
Accuracy:
Voltage Limit
Range:
Resolution:
Accuracy:

PHOTODIODE FEEDBACKType:
Photodiode Current Range:
Output Stability:7
Setpoint Accuracy:

Differential 10 Input Selectable Zero Bias or 5V Reverse Bias on all modules
0–5000µA
0–5000µA
0–5000µA±0.01%±0.01%±0.01%±0.1% of FS±0.1% of FS±0.1% of FS

EXTERNAL ANALOG MODULATION
Input:8
Transfer Function:
High Bandwidth Mode
Small Signal Bandwidth:9Large Signal Bandwidth:10
Low Bandwidth Mode:

0–10V, 50
50mA/ V

0–10V, 50
100mA/ V

0–7.5V, 50
200mA/ V

DC to 1.2MHz
DC to 1.0MHz
DC to 30kHz

DC to 1.0MHz
DC to 1.0MHz
DC to 30kHz

DC to 0.9MHz
DC to 0.9MHz
DC to 30kHz

0–500.00mA
0.01mA±0.05% of FS

0–1000.0mA
0.01mA±0.05% of FS

0–1500.0mA
0.03mA±0.07% of FS

0–5000µA
0.1µA
±2µA

0–5000µA
0.1µA
±2µA

0–5000µA
0.1µA
±2µA

0.0–1000.00µA/mW
0.01µA/mW

0.0–1000.00µA/mW
0.01µA/mW

0.0–1000.00µA/mW
0.01µA/mW

0.0–5000.00mW
100µW

0.0–5000.00mW
100µW

0.0–5000.00mW
100µW

0.00–7.5V
10mV
±7mV

0.00–7.5V
10mV
±7mV

0.00–5V
10mV±7mV

LASER CURRENT MEASUREMENT (DISPLAY)
Output Current
Range:
Resolution:
Accuracy (at 25°C):
Photodiode Current
Range:
Resolution:
Accuracy (at 25°C):
Photodiode Responsivity
Range:11
Resolution:
Optical Power
Range:
Resolution:
Forward Voltage
Range:
Resolution:12
Accuracy:13

CONTROLLER MODULE CURRENT
SOURCE NOTES
12
3
4

All values relate to a one-hour warm-up period.
Over any one-hour period, half-scale output.
Over any 24-hour period, half-scale output.
Measured optically, evaluating noise intensity of a laser diode into a
photodetector with 160kHz bandwidth.
5 Maximum output current transient resulting from normal operationalsituations (e.g., power on-off, current on-off), as well as accidental
situations (e.g., power line plug removal).
6 Maximum output current transient resulting from a 1000V power-line
transient spike. Tested to ILX Lightwave Technical Standard #LDC-00196.

Request ILX Application Note #3, “Protecting your Laser Diode.”
7 Maximum monitor photodiode current drift over any 30-minute period.
Assumes zero drift in responsivity of photodiode.
8 Modulation input is 50 terminated inside the mainframe.
9 250mA setpoint, 50mA modulation current, 1 load.
10 50% modulation at mid-scale output, 1 load.
11 Responsivity value is user-defined and is used to calculate the opticalpower.
12 1mV through GPIB interface.
13 Four-wire voltage measurement while driving calibration load.
Specification valid for values above 10mV. Accuracy is ±2mV through
GPIB interface.

LDC
3916
16-Channel
Laser Diode
Controller

LDC
3916
16-Channel
Laser Diode
Controller

Dual Current Source Modules*

Front Panel Interface Provides
Simple Operation
The bright vacuum fluorescent display isreadable from almost any angle. Status screensshow four channels at once and scroll both
directions to easily view any channel. You canmonitor operations, change setpoints, and turn
any output on or off from the status menu. Plus,
you can define any two parameters displayed on
the status screen for each channel.
For initial or detailed setup, simple andintuitive menus supported by screen-specificsoft keys quickly configure and operate eachchannel. Menu depths have been limited tokeep the front panel operation concise, whilemore sophisticated operations are reserved
for the GPIB interface. An “All Channel” menu
facilitates initial setup, and 10 storage bins allow
you to save and recall all instrument settings.
Setpoints and other values can be entered througha numeric keypad, up/down arrow keys, or therotary adjustment knob.

Powerful GPIB Interface
A powerful master processor platform drives the
LDC-3916 controller, communicating with all sixteen
microprocessor-controlled modules. When coupledwith the HS488TNT chipset GPIB technology
from National Instruments ®, the LDC-3916
provides all of the necessary processing
capabilities for automated production testing. With
microprocessors on each module, the mainframe
master manages 16 independent control channels
quickly and reliably. Free LabVIEW® instrument
drivers are available at www.ilxlightwave.com.

Support Future System Expansion
Designed to provide the most efficientand safest control available for multiple laser
diodes, each module’s control functions are

CURRENT SOURCE1
managed locally and communicated to the masterprocessor. On-board intelligence simplifies
future addition of modules since all operationaland calibration data is stored in the module.
Simply plug in the new module and power up
the system. The mainframe never needs to leave
the rack.

State-of-the-Art Laser Diode
Current Source
The LDC-3926 current source topology
uses an innovative, proprietary control loop andincorporates the latest techniques for signal
filtering and circuit board shielding. Adjustable
voltage limit and faster shutoff help prevent
dangerous reconnect transients that can occur
from intermittent connections between controller
and laser diode. Investment in this instrument
provides assurance for safe, worry-free testing
and control of higher power laser diodes.
Operational modes including constantcurrent in low or high bandwidth or constant
optical power are selectable from the front panel
or via the remote interface. Measurement of
the laser diode forward voltage is provided with
4-wire accuracy for production environments
where longer cable runs are common. A single,
rear panel modulation port provides directmodulation of each channel’s laser current andsupports external modulation bandwidths of up to
1MHz (lower current modules). Individual channel
modulation ports are available on request.

3916332
Dual 500mA

3916334
Dual 1A

0–500mA

0–1000mA

10µA±0.1% of FS
6V (adjustable voltage limit)<50ppm/°C<20ppm<50ppm20µA±0.1% of FS
6V (adjustable voltage limit)<50ppm/°C<20ppm<50ppm<30µA rms
<24µA rms

<24µA rms
<22µA rms

<3mA
<4mA
<8mA

<3mA
<5mA
<10mA

0–500mA
0.2mA±0.7mA

0–1000mA
0.4mA±1.4mA

0–7.5V
0.1V±0.2V

0–7.5V
0.1V±0.2V

Differential 10 Input
Selectable Zero Bias or 5V
Reverse Bias
0–5000µA
0.01%±0.1% of FS

Differential 10Input
Selectable Zero Bias or 5V
Reverse Bias
0–5000µA
0.01%±0.1% of FS

0–10V, 50
50mA/V

0–10V, 50
100mA/V

DC to 1.2MHz
DC to 1.0MHz
DC to 30kHz

DC to 1.0MHz
DC to 1.0MHz
DC to 30kHz

LASER CURRENT OUTPUT
Output Current Range:
Setpoint
Resolution:
Accuracy:
Compliance Voltage:
Temperature Coefficient:
Short-Term Stability (one-hour):2
Long-Term Stability (24-hours):3
Noise and Ripple4
High Bandwidth:
Low Bandwidth:
Transients
Operational:5
1kV EFT:6
Surge:LASER DRIVE LIMIT SETTINGS
Current Limit
Range:
Resolution:
Accuracy:
Voltage Limit
Range:
Resolution:
Accuracy:

PHOTODIODE FEEDBACKType:

Photodiode Current Range:
Output Stability:7
Setpoint Accuracy:

EXTERNAL ANALOG MODULATION
Input:8
Transfer Function:
High Bandwidth Mode
Small Signal Bandwidth:9Large Signal Bandwidth:10
Low Bandwidth Mode:

LASER CURRENT MEASUREMENT (DISPLAY)
Output Current
Range:
Resolution:
Accuracy (at 25°C):
Photodiode Current
Range:
Resolution:
Accuracy (at 25°C):
Photodiode Responsivity
Range:11
Resolution:
Optical Power
Range:
Resolution:
Forward Voltage
Range:
Resolution:12
Accuracy:13

0–500.0mA
0.01mA±0.05% of FS

0–1000.0mA
0.01mA±0.05% of FS

0–5000µA
0.1µA
±2µA

0–5000µA
0.1µA
±2 µA

0.00–1000.00µA/mW
0.01µA/mW

0.00–1000.00µA/mW
0.01µA/mW

0.0– 5000.00mW
100µW

0.0– 5000.00mW
100µW

0.00– 7.5V
10mV
±7mV

0.0– 7.5V
10mV
±7mV

DUAL CURRENT SOURCE NOTES*Two isolated laser sources in each module.
1 All values relate to a one-hour warm-up period.
2 Over any one-hour period, half-scale output.
3 Over any 24-hour period, half-scale output.
4 Measured optically, evaluating noise intensity of a laser diode into a photodetector with 160kHz bandwidth.
5 Maximum output current transient resulting from normal operational situations (e.g. power on-off, current on-off), as well as accidental situations (e.g. powerline plug removal).
6 Maximum output current transient resulting from a 1000V power-line transient spike. Tested to ILX Lightwave Technical Standard #LDC-00196. Request ILX
Application Note #3, “Protecting Your Laser Diode.”
7 Maximum monitor photodiode current drift over any 30-minute period. Assumes zero drift in responsivity of photodiode.
8 Modulation input is 50 terminated inside the mainframe.
9 250mA setpoint, 50mA modulation current, 1 load.
10 50% modulation at mid-scale output, 1load.
11 Responsivity value is user-defined and is used to calculate the optical power.
12 1mV through GPIB interface.

LDC
3916
16-Channel
Laser Diode
Controller

LDC
3916
16-Channel
Laser Diode
Controller

LDC
3916

Controller Modules (Laser and TE Control)continued
3916372
TEMPERATURE CONTROL1 500mA/9W

39163743916376

1A/9W

1.5A/9W–99°C to 150°C
Resolution Accuracy3
0.1°C±0.2°C
0.2°C±0.2°C<±0.007°C<±0.01°C
Bipolar current source>7V DC
1.5A
9W<1mA rms–99°C to 150°C
Resolution Accuracy3
0.1°C±0.2°C
0.2°C±0.2°C<±0.007°C<±0.01°C
Bipolar current source>7V DC
1.5A
9W<1mA rms–99°C to 150°C
Resolution
Accuracy3
0.1°C±0.2°C
0.2°C±0.2°C<±0.007°C<±0.01°C
Bipolar current source>7V DC
1.5A
9W<1mA rms

0–1.5A±0.05A
Smart Integrator,
Hybrid PI
Gain adjustablefrom 1–127

0–1.5A±0.05A
Smart Integrator,
Hybrid PI
Gain adjustablefrom 1–127

0–1.5A±0.05A
Smart Integrator,
Hybrid PI
Gain adjustablefrom 1–127

Thermistor (2-wire NTC)
10/100µA
25–450,000, typical
Steinhart-Hart, 3 constants

Thermistor (2-wire NTC)
10/100µA
25–450,000, typical
Steinhart-Hart, 3 constants

Thermistor (2-wire NTC)
10/100µA
25–450,000, typical
Steinhart-Hart, 3 constants–99.9°C to 199.9°C±0.5°C–99.9°C to 199.9°C±0.5°COUTPUT
Temperature Control Range:2
Thermistor Setpoint:–20°C to 20°C:
20°C–50°C:
Short-Term Stability (one-hour):4
Long-Term Stability (24-hours):5
Output Type:
Compliance Voltage:
Short Circuit Output Current:
Maximum Output Power:
Current Noise and Ripple:6
Current Limit
Range:
Accuracy:
Control Algorithm:

TEMPERATURE SENSOR
Types:
Thermistor Sensing Current:7
Usable Thermistor Range:
User Calibration:

TEC MEASUREMENT (DISPLAY)
Temperature:
Range:8
Accuracy:
Thermistor Resistance
10µA Setting
Range:
Accuracy:9
100µASetting
Range:
Accuracy:10
TEC Current
Range:
Accuracy:
Current Resolution:
Voltage
Range:
Resolution:11
Accuracy:12–99.9°C to 199.9°C±0.5°C

0.01–450.00k±0.05k0.01–450.00k±0.05k0.01–450.00k±0.05k0.001–45.000k
±0.005k

0.001–45.000k
±0.005k

0.001–45.000k
±0.005k

–1.50 to 1.50A±0.04A±0.01A–1.50 to 1.50A±0.04A±0.01A–1.50 to 1.50A±0.04A±0.01A–9.999 to 9.999V
100mV
±70mV

–9.999 to 9.999V
100mV
±70mV

–9.999 to 9.999V
100mV
±70mV

CONTROLLER MODULE TEMPERATURE CONTROL NOTES
1
2
3

4
5
6
7
8
9
10
11
12

All values relate to a one-hour warm-up period.
Software limits of range. Actual range possible depends on the physical load, thermistor type, and TEC module used.
Accuracy figures are quoted for a typical 10k thermistor and 100µA current setting for –5°C to 50°C, and typical 10k thermistor and 10µA current settingfor –20°C to –5°C. Accuracy figures are relative to the calibration standard. Both resolution and accuracy are dependent upon the user-defined configurationof 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.
Measured at 1A output over a bandwidth of 10Hz to 10MHz. 3916558 Module noise measured at 2A output over a bandwidth of DC to 25MHz
Thermistor current range software selectable by front panel or GPIB. (10µA range not available for 3916371.)
Software limits of display range.
Using a 10k thermistor, controlling an LDM-4412 mount over –30°C to 65°C (~200–2k) or a 100k thermistor controlling an LDM-4412 mount over
10°C–85°C (~200–10k).
Using a 10k thermistor, controlling an LDM-4412 mount over –5°C to 90°C (~45–1k).
Resolution 1mV through GPIB interface.
Voltage measurement accuracy while driving calibration load. Accuracy is dependent upon load used. Accuracy of ±20mV through GPIB interface.

When coupled with the LDM-4616 Modular Laser Diode Mount,the LDC-3916 Multi-channel controller provides a configurable,
cost-effective solution for multi-channel, DWDM signal sources.
This mount can also support many popular 980nm and1480nm pump laser diodes for EDFA test applications.

16-Channel
Laser Diode
ControllerHigh Channel Density Laser Diode
Control for Production Test
High Stability TEC Control
Achieve up to ±0.007°C temperature stability
with the low noise temperature controller
modules. The temperature control circuits
optimize temperature settling times with a smart
integrator control loop with expanded gain
setting ranges. All TEC control modules for
the LDC-3916 include voltage measurement
capabilities and internal thermistor current
selection via front panel or remotely for control
over a wide temperature range.

Flexible Control Over a Wide
Range of Applications
By combining true modularity and high channel
density, the LDC-3916 easily adapts to a wide
variety of applications. This system can be used
for controlling multiple pump lasers in amplifier
test or low channel count burn-in applications.
When coupled with ILX’s LDM-4616 16-channel
laser diode mount, the LDC-3916 can provide
a cost effective DWDM optical source test set.
For picometer tuning of wavelengths, select the
LDC-3916371 module with 0.01°C temperature
setpoint resolution.

Protect Your Investment with theLeaders in Laser Diode Protection
The LDC-3916 provides all of ILX Lightwave’s
proven laser protection features like independent
current limits, slow-start turn-on circuits, andisolated power supplies. The adjustable laser
voltage limit brings even greater levels ofprotection. If a temperature limit is reached,
the TEC Temperature control modules can be
programmed to turn off any or all lasers in a
mainframe.
Designed for production test, the LDC-3916 will
satisfy higher power multiple laser diode operation
with reliable and secure control.

LDC
3916
16-Channel
Laser Diode
Controller

Specifications1Fine Temperature Resolution Controller Module
TEMPERATURE CONTROL1CURRENT SOURCE1
39163713916371

500mA/9W

500mA/9W

LASER CURRENT OUTPUT
Output Current Range:
Setpoint
Resolution:
Accuracy:
Compliance Voltage:
Temperature Coefficient:
Short-Term Stability (one-hour):2
Long-Term Stability (24-hour):3
Noise and Ripple4
High Bandwidth:
Low Bandwidth:
Transients
Operational:5
1kV EFT:6
Surge:

0–500mA
10µA±0.1% of FS
6V (adjustable voltage limit)<50ppm/°C<20ppm<50ppm<30µA rms
<24µA rms
<3mA
<4mA
<8mA

LASER DRIVE LIMIT SETTINGS
Current Limit
Range:
Resolution:
Accuracy:
Voltage Limit
Range:
Resolution:
Accuracy:

0–500mA
0.2mA±0.7mA
0–7.5V
0.1V±0.2V

PHOTODIODE FEEDBACKType:

Photodiode Current Range:
Output Stability:7
Setpoint Accuracy:

Differential 10 Input.
Selectable Zero Bias
or 5V Reverse Bias
0–5000µA
0.01%±0.1% of FS

EXTERNAL ANALOG MODULATION
Input:8
Transfer Function:
High Bandwidth Mode
Small Signal Bandwidth:9Large Signal Bandwidth:10
Low Bandwidth Mode

0–10V, 50
50mA/VDC to 1.2MHz
DC to 1.0MHz
DC to 30kHz

LASER CURRENT MEASUREMENT(DISPLAY)
Output Current
Range:
Resolution:
Accuracy (at 25°C):
Photodiode Current
Range:11
Resolution:
Accuracy (at 25°C):
Photodiode Responsivity
Range:11
Resolution:
Range:
Optical Power Resolution:
Forward Voltage
Range:
Resolution:12
Accuracy:13

0–500.00mA
0.01mA±0.05% of FS
0–5000µA
0.1µA±2µA
0.00–1000.00µA/mW
0.01µA/mW
0.00–5000.0mW
100µW
0.00–7.5V
10mV
±7mV

TEMPERATURE CONTROL OUTPUT
Temperature Control Range:2
Thermistor Setpoint
Resolution:
Accuracy:3
Short-Term Stability (one-hour):4
Long-Term Stability (24-hours):5
Output Type:
Compliance Voltage:
Maximum Output Current:
Maximum Output Power:
Current Noise and Ripple:6
Current Limit
Range:
Accuracy:
Control Algorithm:-5°C to 50°C
0.01°C±0.2°C<±0.007°C<±0.01°C
Bipolar current source>7V DC
1.5A
9W<1mA rms
0–1.5A±0.05A
Smart Integrator, Hybrid PI,
Gain adjustable from 1–127

TEMPERATURE SENSOR
Types:
Thermistor Sensing Current:7
Usable Thermistor Range:
User Calibration:

Thermistor (2-wire NTC)
100µA
3.5 to 45 k
Steinhart-Hart, 3 constants

TEC MEASUREMENT (DISPLAY)
Temperature
Range:8
Accuracy:3
Thermistor Resistance
100µA Setting
Range:
Accuracy:10
TEC Current
Range:
Accuracy:
Voltage
Range:
Resolution:11
Accuracy:12–99.9°C to 199.9°C±0.5°C

3.5 to 45 k
±5–1.50 to 1.50A±0.04A–9.999 to 9.999V
100mV
±70mV

NOTES
The 3916371 Current Source and Temperature Control notes areon the following pages.

Controller Modules (Laser and TE Control)
CURRENT SOURCE1

391637239163743916376

500mA/9W

1A/9W

1.5A/9W

0–500mA

0–1000mA

0–1500mA

10µA±0.1% of FS
6V (adjustable voltage limit)<50ppm/°C<20ppm<50ppm20µA±0.1% of FS
6V (adjustable voltage limit)<50ppm/°C<20ppm<50ppm40µA±0.1% of FS
4.75V (adjustable voltage limit)<50ppm/°C<20ppm<50ppm<30µA rms
<24µA rms

<24µA rms
<22µA rms

<24µA rms
<20µA rms

<3mA
<4mA
<8mA

<3mA
<5mA
<10mA

<3mA
<5mA
<10mA

0–500mA
0.2mA±0.7mA

0–1000mA
0.4mA±1.4mA

0–1500mA
0.6mA±4.5mA

0–7.5V
0.1V±0.2V

0–7.5V
0.1V±0.2V

0–7.5V
0.1V±0.2V

LASER CURRENT OUTPUT
Output Current Range:
Setpoint
Resolution:
Accuracy:
Compliance Voltage:
Temperature Coefficient:
Short-Term Stability (one-hour):2
Long-Term Stability (24-hours):3
Noise and Ripple4
High Bandwidth:
Low Bandwidth:
Transients
Operational:5
1 kV EFT:6
Surge:LASER DRIVE LIMIT SETTINGS
Current Limit
Range:
Resolution:
Accuracy:
Voltage Limit
Range:
Resolution:
Accuracy:

PHOTODIODE FEEDBACKType:
Photodiode Current Range:
Output Stability:7
Setpoint Accuracy:

Differential 10 Input Selectable Zero Bias or 5V Reverse Bias on all modules
0–5000µA
0–5000µA
0–5000µA±0.01%±0.01%±0.01%±0.1% of FS±0.1% of FS±0.1% of FS

EXTERNAL ANALOG MODULATION
Input:8
Transfer Function:
High Bandwidth Mode
Small Signal Bandwidth:9Large Signal Bandwidth:10
Low Bandwidth Mode:

0–10V, 50
50mA/ V

0–10V, 50
100mA/ V

0–7.5V, 50
200mA/ V

DC to 1.2MHz
DC to 1.0MHz
DC to 30kHz

DC to 1.0MHz
DC to 1.0MHz
DC to 30kHz

DC to 0.9MHz
DC to 0.9MHz
DC to 30kHz

0–500.00mA
0.01mA±0.05% of FS

0–1000.0mA
0.01mA±0.05% of FS

0–1500.0mA
0.03mA±0.07% of FS

0–5000µA
0.1µA
±2µA

0–5000µA
0.1µA
±2µA

0–5000µA
0.1µA
±2µA

0.0–1000.00µA/mW
0.01µA/mW

0.0–1000.00µA/mW
0.01µA/mW

0.0–1000.00µA/mW
0.01µA/mW

0.0–5000.00mW
100µW

0.0–5000.00mW
100µW

0.0–5000.00mW
100µW

0.00–7.5V
10mV
±7mV

0.00–7.5V
10mV
±7mV

0.00–5V
10mV±7mV

LASER CURRENT MEASUREMENT (DISPLAY)
Output Current
Range:
Resolution:
Accuracy (at 25°C):
Photodiode Current
Range:
Resolution:
Accuracy (at 25°C):
Photodiode Responsivity
Range:11
Resolution:
Optical Power
Range:
Resolution:
Forward Voltage
Range:
Resolution:12
Accuracy:13

CONTROLLER MODULE CURRENT
SOURCE NOTES
12
3
4

All values relate to a one-hour warm-up period.
Over any one-hour period, half-scale output.
Over any 24-hour period, half-scale output.
Measured optically, evaluating noise intensity of a laser diode into a
photodetector with 160kHz bandwidth.
5 Maximum output current transient resulting from normal operationalsituations (e.g., power on-off, current on-off), as well as accidental
situations (e.g., power line plug removal).
6 Maximum output current transient resulting from a 1000V power-line
transient spike. Tested to ILX Lightwave Technical Standard #LDC-00196.

Request ILX Application Note #3, “Protecting your Laser Diode.”
7 Maximum monitor photodiode current drift over any 30-minute period.
Assumes zero drift in responsivity of photodiode.
8 Modulation input is 50 terminated inside the mainframe.
9 250mA setpoint, 50mA modulation current, 1 load.
10 50% modulation at mid-scale output, 1 load.
11 Responsivity value is user-defined and is used to calculate the opticalpower.
12 1mV through GPIB interface.
13 Four-wire voltage measurement while driving calibration load.
Specification valid for values above 10mV. Accuracy is ±2mV through
GPIB interface.

LDC
3916
16-Channel
Laser Diode
Controller

LDC
3916
16-Channel
Laser Diode
Controller

Specifications
GENERAL

Accessories

Chassis Ground:
GPIB Connector:
RS-232 Connector:
Power Requirements:1
Size (HxWxD):

4mm Banana Jack
24-pin IEEE-488
9–pin D–sub
100 VAC ±10%, 15A
120 VAC ±10%, 12A
200-240 VAC ±10%, 6A
133mm x 482mm x 653mm
5.25” x 18.98" x 25.7"

Weight (typical)
Mainframe Only:
20kg (44lbs)
With Modules:
27kg (59lbs)
Operating Temperature: 0°C to 40°C
Storage Temperature: –40°C to 70°C
Humidity:2
20–85%, non condensing
Laser Safety Features: Keyswitch, Interlock, Output Delay:(Meets 21 CFR 1040.10)
Display:
Vacuum fluorescent,
64 x 128 pixels
83mm x 41mm

NOTES
1
2

Product Features

All channels driving 6A.
Based on the vacuum fluorescent display specification.

This product has passed all CE requirements and bears the CE mark.

LNF-320
LDM-4616
UCA-350
RM-137
RM-138TS-510

Low Noise Filter
16-Channel Butterfly Mount
Unipolar Heater Control Adapter
Rack Mount Kit, 20.5" hole spacing
Rack Mount Kit, 25" hole spacing
Calibrated 10kThermistor(-20°C to +50°C)
TS-520Uncalibrated 10k Thermistor(-20°C to +50°C)
TS-521
Uncalibrated 5k Thermistor(-45°C to +30°C)
TS-523
Uncalibrated 20k Thermistor(-10°C to +70°C)
TS-525
Uncalibrated 100k Thermistor(-10°C to +110°C)
LabVIEW® Instrument Driver
LabVIEW® is a registered trademark of National Instruments.

3926339 and 3926559 Module Cables
CC-306H
CC-501H

3916 Series Module Cables
CC-305S

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

CC-306S
CC-355S
CC-550S

ORDERING INFORMATION
LDC-3926
LDC-3926339
LDC-3926559
LDC-3916371
LDC-3916372
LDC-3916374
LDC-3916376
LDC-3916332
LDC-3916334
LDC-3916338
LDC-3916550
LDC-3916558

16-Channel High Power
Laser Diode Controller Mainframe
6A Current Source Module
48W, 6A TEC Temperature Control
ModuleFine Temperature Resolution
500mA/9W Controller Module
500mA/9W Controller Module
1A/9W Controller Module
1.5A/9W Controller Module
500mA/500mA Dual Current
Source Module
1A Dual Current Source Module
3A Current Source Module
9W Dual TEC Temperature
Control Module
3A (24W) TEC Temperature
Control Module

6A Current Source/UnterminatedInterconnect Cable
Low-R TEC/UnterminatedInterconnect Cable

CC-316M
CC-501S
CC-505S
CC-516M

Current Source/Laser Diode Mount
Interconnect Cable
Current Source/UnterminatedInterconnect Cable
Current Source/Laser Diode Mount
Interconnect Cable (5 meters)
TE Controller/Laser Diode Mount
Interconnect Cable (5 meters)
Laser Current Cables (bundle of 8)
TEC/Unterminated Interconnect
Cable
TEC/Laser Diode Mount
Interconnect CableTEC Cables (bundle of 8)

Dual channel laser current or
temperature control modules for control
of up to 32 laser diodes with one
mainframe
Laser current sources feature low
noise and high stability and operate
in constant current or constant power
operating modes with direct modulation
up to 1 MHz
Temperature controllers operate inconstant temperature or constantresistance mode with expanded gain
setting from 1 to 127
GPIB/IEEE488 or RS-232 remotecontrol interface

16 Channels of Laser Diode Control
1-800-459-9459

www.ilxlightwave.com

Wide variety of laser controller modules(current and temperature) with up to 3A
available per channel

The LDC-3916 Laser Diode Controller offers 16 channelsof laser diode current source and temperature control in aspace saving rack mountable instrument for simultaneouscontrol of both current and temperature of up to 16 laser
diodes in one mainframe. ILX Lightwave developed theLDC-3916 for multiple pump control in optical amplifier
testing. The high stability, low noise current and temperature
controllers also make the 3916 suitable for low-channel
count burn-in systems or, coupled with ILX’s 16-channel
laser diode mount, a 16 channel DFB source bank.
A wide variety of laser control modules are available
including laser controller modules, dual channel laser
current source, and dual channel temperature control
modules. Controller modules source up to 1.5A of laser
current with an integrated 9W temperature controller. Duallaser current source modules, with two isolated outputs,
source up to 1A per channel, while dual temperature control
modules provide two independent 9W outputs for control of
up to 32 laser diodes per mainframe.
Remote operation for independent control of all 16
channels is provided through an IEEE488 GPIB interface
or RS-232 serial interface.

This product has passed all CE requirements and bears the CE mark.

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

16 independent, isolated channels forlaser and TEC control

International Inquiries: 406-556-2481
email: sales@ilxlightwave.com

REV03.082609

LDC
3916
16-Channel
Laser Diode
Controller

LDC
3916
16-ChannelHigh Power
Laser Diode
Controller

Specifications

High Power Current Source Modules
CURRENT SOURCE1
LASER CURRENT OUTPUT
Output Current Range:
Setpoint
Resolution:
Accuracy:
Compliance Voltage:
Temperature Coefficient:
Short-Term Stability (one-hour):2
Long-Term Stability (24-hour):3
Noise and Ripple4
High Bandwidth:
Low Bandwidth:
Transients
Operational:5
1kV EFT:6
Surge:

3916338
Single 3A
0–3000mA
80µA±0.15% of FS
4.5V (adjustable voltage limit)<100ppm/°C<50ppm<75ppm<36µA rms
<24µA rms
<5mA
<10mA
<8mA

LASER DRIVE LIMIT SETTINGS
Current Limit
Range:
Resolution:
Accuracy:
Voltage Limit
Range:
Resolution:
Accuracy:

0–3000mA
1.025mA±9mA
0–7.5V
10mV±200mV

PHOTODIODE FEEDBACKType:
Photodiode Current Range:
Output Stability:7
Setpoint Accuracy:

Differential 10 Input
Selectable Zero Bias or 5V reverse Bias
0–5000µA±0.01%±0.1% of FS

EXTERNAL ANALOG MODULATION
Input:8
Transfer Function:
High Bandwidth Mode
Large Signal Bandwidth:9
Low Bandwidth Mode:

0–8.0V, 50
375mA/V ±10%
DC to 0.6MHz
DC to 30kHz

LASER CURRENT MEASUREMENT (DISPLAY)
Output Current
Range:
Resolution:
Accuracy (at 25°C):
Photodiode Current
Range:
Resolution:
Accuracy (at 25°C):
Photodiode Responsivity
Range:10
Resolution:
Optical Power
Range:
Resolution:
Forward Voltage
Range:
Resolution:11
Accuracy:12, 13

0–3000.0mA
0.01mA±0.07% of FS
0–5000µA
0.1µA±2µA
0.00–1000.00µA/mW
0.01µA/mW
0.0–5000.0mW
100µW
0.00–7.5V
10mV
±7mV

CURRENT SOURCE NOTES
1.
2.
3.
4.

All values relate to a one-hour warm-up period.
Over any one-hour period, half-scale output.
Over any 24-hour period, half-scale output.
Measured optically, evaluating noise intensity of a laser diode into a photo detector with
150kHz bandwidth.
5. Maximum 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).
6. Maximum output current transient resulting from a 1000V power-line transient spike.
Tested to ILX Lightwave Technical Standard #LDC-00196. Request ILX Application
Note #3 “Protecting Your Laser Diode.”

7. Maximum monitor photodiode current drift over any 30-minute period. Assumes zerodrift in responsivity of photodiode.
8. Modulation input is 50 terminated inside the mainframe.
9. 250mA setpoint, 50 mA modulation current, 1load.
10. 50% modulation at mid-scale output, 1 load.
11. Responsivity value is user-defined and is used to calculate the optical power.
12. 1mV through GPIB
13. Four-wire voltage measurement while driving calibration load. Specification valid forvalues above 10mV.
In keeping with our commitment to continuing improvement, ILX Lightwave reserves the rightto change specifications without notice and without liability for such changes.

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

1-800-459-9459

www.ilxlightwave.com

International Inquiries: 406-556-2481
email: sales@ilxlightwave.com

REV03.082609