LDX-324200 pages

LDX
32420
High Power
Precision
Current Source
Specifications
DRIVE CURRENT LIMIT SETTINGS1
Output Current Set Point
Range:
Resolution:
Accuracy (% of reading):
Compliance Voltage:
Temperature Coefcient:
Stability (1 hour):2
Noise and Ripple (rms):3
High Bandwidth Mode:
Low Bandwidth Mode:
Transients:
Operational:4
1kV EFT / Surge:5
OUTPUT CONNECTOR PINOUT
0 to 10A
1 mA
±0.1% + 10 mA
4V
< 50 ppm / oC
±50 ppm
0 to 20A
1 mA
±0.1% + 10 mA
4V
< 50 ppm / oC
±50 ppm
< 5 mA
< 5 mA
< 5 mA
< 5 mA
< 25 mA
< 80 mA
< 25 mA
< 80 mA
COMPLIANCE VOLTAGE ADJUST
Range:
Resolution:
Accuracy (% of FS):
0-4V
100 mV
+2.5%
0-4V
100 mV
+2.5%
DRIVE CURRENT LIMIT SETTINGS
Range:
Resolution:
Accuracy (% of FS):
0.1 to 10.1 A
100 mA
±1%
0.2 to 20.2 A
100 mA
±1%
PHOTODIODE FEEDBACK
Type:
PD Current Range:
Output Stability:6
Accuracy, setpoint (% of FS):
PD Reverse Bias:
Differential
0 to 5000 µA
±0.02%
±0.05%
0-5V, Adjustable
Differential
0 to 5000 µA
±0.02%
±0.05%
0-5V, Adjustable
EXTERNAL ANALOG MODULATION
Input:
Transfer Function:
Bandwidth (3dB)7
High Bandwidth Mode:
Low Bandwidth Mode:
0-10V, 1 k
1 A/V
0-10V, 1 k
2 A/V
DC to 100 kHz
DC to 20 kHz
DC to 100 kHz
DC to 20 kHz
TTL
14 µs
12ms
TTL
14 µs
12ms
TRIGGER OUTPUT
Type:
Pulse Width:
Delay:8
MEASUREMENT (DISPLAY)
Output Current9
Range:
Resolution:
Accuracy (% of reading):
PD Current
Range:
Resolution:
Accuracy:
PD Responsivity
Range:10
Resolution:
Optical Power
Range:
Resolution:
Forward Voltage
Range:
Resolution:
Accuracy:
0 to 10.000 A
0.001 A
0.1% + 10 mA
0 to 20.000 A
0.001 A
0.1% + 10 mA
0 to 5000 A
1 µA
±2 µA
0.00 to 100.00 µA/mW
0.01 µA/mW
0.00 to 100.00 W
0.01 W
0.00 to 100.00 W
0.01 W
0.000 to 4.000V
1 mV
±5 mV
0.000 to 4.000V
1 mV
±5 mV
NOTES
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
PD Anode
PD Cathode
Voltage Sense (+)
Chassis Ground
Voltage Sense (-)
Laser Anode
Laser Anode
Laser Cathode
Laser Cathode
All values relate to a one-hour warm-up period.
Over any one-hour period, half-scale output.
Measured electrically with a 0.5 load evaluating AC coupled rms value over a 1 MHz bandwidth.
Maximum output current transient resulting from normal operations (e.g., power on-off, current
on-off), as well as accidental situations (e.g., power line plug removal).
Maximum output current transient resulting from a 1000V power-line transient spike
per IEC 1004-4 and 1004-5.
Maximum monitor photodiode current drift over any 30-minute period. Assumes zero drift in
photodiode responsivity.
5V peak to peak modulation at mid-scale output.
From start of output current change to trigger pulse.
Measured current through GPIB or USB command; instrument front panel displays setpoint current.
The responsivity value is user-dened and is used to calculate the optical power.
Dual range 10A / 20A output
Precision current control with
1 mA setpoint resolution
LASER DIODE PROTECTION
Output Shorting Relay:
Output Enable Delay:
Current Limit:
Voltage Limit:
Hardware Fault Response Time
Current Limit:
Voltage Limit:
Open Circuit:
Intermittent Contact Protection
AC Power Failure / Brown Out
Error Monitoring / Reporting:
Normally closed
2s (per CFR 1040.10)
Adjustable; redundant hardware
Adjustable
Continuous Monitoring
5 s
50 s
Current Limit, Voltage Limit,
Open Circuit, Optical Power Limit
INTERLOCKS
Interlock 1:
Interlock 2:
Normally open; close to enable output
Normally high, TTL input;
TTL low to disable output
GENERAL
Remote Interface
GPIB:
USB:
Power Requirements:
Maximum Current Draw
100-120VAC:
220-240VAC
Size (HxWxD):
Weight:
Operating Temperature:
Storage Temperature:
Humidity:
Regulatory Compliance:
0 to 5000 A
1 µA
±2 µA
0.00 to 100.00 µA/mW
0.01 µA/mW
1)
2)
3)
4)
5)
A1)
A2)
A3)
A4)
Product Features
Connectors
Laser Output:
Modulation Input:
Trigger Out:
Interlock 1:
Interlock 2:
Ground:
IEEE488
2.0
100-120VAC +10%
220-240VAC +10%
www.ilxlightwave.com
Precision laser forward voltage
measurement
Proven high power laser protection
features including independent current
limits, adjustable compliance voltage,
and intermittent contact protection
Laser current modulation capability
GPIB / IEEE488 and USB 2.0 interface
1.5A
0.7A
4” x 8.5” x 13.4”
(102 mm x 216 mm x 340 mm)
12.2 lbs. (5.5 kg)
0oC to 40oC
-40oC to 70oC
Up to 85%, non-condensing
CE Certied; EN61326-1:2006 Basic
Requirements; Immunity
EN60950 Low Voltage Directive
EN55011:2007 Radiated and
Conducted Emissions
EN61010-1 Safety Requirements
D-sub combination 9W4
BNC, front panel
BNC, rear panel
Terminal block; rear panel
BNC, rear panel
Banana jack
ORDERING INFORMATION
LDX-32420
High Power Precision Laser Diode Driver
CC-320
20A Interconnect Cable, 9W4 to 7W2
CC-325
20A Interconnect Cable, 9W4 to ring lug
LDM-49840
High Power Buttery Laser Diode Mount
LDM-49860
High Power 2-Pin Module Laser Diode Mount
RM-139
Single Rack Mounting Kit
RM-140
Dual Rack Mounting Kit
LabView® Instrument Driver
In keeping with our commitment to continuing improvement, ILX Lightwave reserves the right to
change specications without notice or liability for such changes.
For information call
31950 Frontage Road, Bozeman, MT 59715 • FAX: 406-586-9405
Constant current and constant power
operating modes
The LDX-32420 High Power Precision Laser Diode Driver
is a high performance current source designed specically
for controlling and testing high power laser diodes. It offers
maximum current ranges of 10 amps and 20 amps CW with a
compliance voltage of four volts. These instruments offer high
setpoint accuracy and output current stability, low output noise,
and forward voltage and photodiode current measurements
making these instruments ideal for precision, high power laser
diode testing.
Multiple laser diode protection features include adjustable
voltage and hardware current limits, output shorting relays, slow
turn on/off circuits, fast error detection circuits, and transient
protection during power up and laser operation. In addition,
the LDX-32420 accepts a TTL input that can be congured to
disable the output to the laser diode in an over temperature
condition at the laser.
Designed for automated laser diode testing, these drivers
combine precision control and measurement with a GPIB/
IEEE488 and USB interface for high power laser diodes. For
virtual instrument programming, LabView® instrument drivers
are available free of charge and can be downloaded from the
ILX website.
1-800-459-9459
International Inquiries: 406-556-2481
email: sales@ilxlightwave.com
Rev02.120909
Precision 20A Current Source
for High Power Laser Diodes
LDX
32420
High Power
Precision
Current Source