Wavelength Electronics PLD Series User manual

PLD-200 / PLD-500 / PLD-5000
1
PLD5000-00400-A Rev. B
Call 1-406-587-4910 for technical support. www.teamwavelength.com
PLD Series +5V Laser Diode Drivers
PLD-500
PLD-5000
500 mA Laser Diode Driver
5 Amp Laser Diode Driver
_____________ Ordering Information
_________________ Pin Descriptions
______________ Functional Diagram
______________ General Description
The PLD series of Laser Diode Drivers combines the
high performance you expect from a Wavelength component
with two distinct improvements: low voltage operation from
+5 V DC, and an Active Current Limit.
Operating from a single +5 V supply minimizes heat
dissipation. Modular packaging makes it easier to integrate
the PLD into your system. For applications that require
lasers in series, a separate laser diode power supply input
lets you provide a higher compliance voltage. The Active
Current Limit not only protects your laser diode, but ensures
that you are operating with maximum stability. When the
laser current reaches the level set by the Limit I Trimpot,
the output disables and the Limit LED and Limit Status
indicate the current limit has been reached.
Two photodiode ranges provide variable sensitivities
for optimum operation. You can maintain excellent stability
when operating in constant current, constant power, or
modulated mode. All trimpots and switches are easily
accessible and offer precision control. A slow start circuit,
mechanical shorting relay, and Active Current Limit offer
maximum protection for your laser diode even when power
is removed.
____________________ Features
•200 mA, 500 mA, and 5 Amp models
•Single supply operation: +5 VDC
•< 20 ppm constant current stability (24 hours)
•< 0.02% constant power stability (24 hours)
•Separate Laser Diode Supply input allows for flexible
compliance voltages up to +28 VDC typical
•Manually adjust:
Setpoint & Current Limit
Constant Current or Constant Power Operation
Photodiode Sensitivity
•Remotely:
Adjust Setpoint Current with Analog Input
Enable or Disable Output
Monitor Laser Diode Current, Photodiode Current,
and Laser Diode Limit Current
Monitor Limit Status
•Supports all laser diode / photodiode pin configurations
•Safety is maximized:
Slow start circuitry
Mechanical relay protects even when power is
removed
Active Current Limit
•Integral Heatsink (Fan Assembly included with
PLD-5000)

PLD-200 / PLD-500 / PLD-5000
2
TYPE A TYPE B TYPE C
_____________________________________________________ Pin Descriptions
DESCRIPTION
For TYPE C laser diodes only. See page 12.
For TYPE C laser diodes only. See page 12.
Enable Output Current = +3 to +5 V
Disable Output Current = Ground or Floating
LIMIT status. LIMIT = Ground Normal Operation = High Impedance
If Limit is detected, laser diode current will turn off, Limit I LED will light.
Toggle LD ENABLE to restart laser diode current.
Current Limit setpoint monitor. Impedance = 1 kΩOutput 0 to 2.5 V
NOTE: Current limit needs to be set 0.2 V above desired limit level.
Measurement ground. Low current return used only with pins 5, 7, 8, & 9.
Shorted to pin 11 internally.
Laser Diode current monitor. Impedance is 1 kΩOutput 0 to 2.5 V
Power monitor (PD current monitor). Impedance = 1 kΩOutput 0 to 2.5 V
Remote setpoint or modulation input. Input impedance = 1 MΩInput 0 to 5 V
Connect Pin 9 to Pin 6 when not in use.
Supply voltage to control electronics. Min +4.5 V Max +5.5 V
Power supply ground. Used with pin 10 for high current return.
Laser Diode Anode and laser diode supply connection.
Recommended +LD Supply for single laser is +5 V. Maximum +30 V.
CAUTION: Too high a voltage may thermally damage the PLD.
Laser Diode Cathode
For Type A or B laser diodes, Photodiode Anode.
See page 12 for use with Type C laser diodes.
For TYPE C laser diodes only. See page 12.
PIN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
NAME
AUX V+
PD AUX
LD ENABLE
LIM I STAT
LIM I MONITOR
COMMON
I MONITOR
P MONITOR
ANALOG INPUT
+5V
GND
LD ANODE/
+LD SUPPLY
LD CATHODE
PD ANODE
PD CATHODE
The following laser diode / photodiode configurations are
currently manufactured - Type A, Type B, and Type C. Setup
and operation vary according to your type of laser diode.
Please identify which laser diode you will be using with
the PLD and follow the appropriate operating instruc-
tions.
Operating instructions for lasers of Type A or B are detailed
on page 8.
Operating instructions for Type C Lasers are detailed on
page 12.
○○○○○○○○○○○○○
____________________________________________________ Laser Diode Types

PLD-200 / PLD-500 / PLD-5000
3
______________________________________________ LASER SAFETY ISSUES
____________________________________________ GROUNDING VARIATIONS
Some laser diode packages short either pin of the laser diode to the case, which may connect the pin to earth ground
through system hardware. Special attention to the details of grounding will assure safe operation. We offer the
following definitions and options:
WARNING: The PLD laser diode drivers can power Class
IV laser diodes. Precautions should be taken to avoid
exposure to the laser radiation. Do not stare directly into
the beam or expose hands or other body parts to the
beam. Before powering the laser diode, mount it se-
curely and have beam dumps set up to catch both front
and back facet outputs.
CAUTION: If you plan to operate the PLD with any
Wavelength temperature controller, you may need to
use separate power supplies. If the TE cooler or
thermistor is connected to the laser diode, you must
either use two separate power supplies and let each
float independent of the other or use a bipolar power
supply.
WARNING: Exceeding the maximum specified operating
current (IOP MAX) will damage your laser diode. Become
familiar with the PLD series module operation and the
exact specifications of your laser diode before attach-
ing it to the PLD module. Seek assistance from someone
with experience working with laser diodes if you have
not operated one before.
WARNING: The following instruments may cause
momentary opens, shorts, or impedance changes that
will damage a laser diode if attached to the output of a
laser diode driver.
1. A volt meter across the laser diode.
2. An oscilloscope across the laser diode.
3. A current meter in series with the laser diode.
All measurements made with these instruments on
the output should be made with a simulated load
attached and not a laser diode.
CAUTION: IF LASER DIODE AND PHOTODIODE
ARE ISOLATED (TYPE B LASER DIODE) Short the
laser diode anode to the photodiode cathode. The
PLD series laser diode drivers require the photodiode
be connected to the laser diode. If no connection is
made between the laser diode and the photodiode,
then the PLD will not operate properly in constant
power mode, and the power monitor will not read the
proper photodiode current.
______ POWER SUPPLY AND NOISE
The PLD Series Laser Diode Drivers are designed for stable,
low noise operation. The power supply you select will
directly affect the noise performance of the driver. We
recommend using a regulated, linear supply for optimum
performance. Depending on your requirements, you may
be able to use a switching power supply. Each case must
be evaluated independently because a switching power
supply will affect noise, transient, and stability performance.
The PLD series can be purchased with the PLDPCB series
evaluation kit and / or the PWRPAK-5V +5V table top regu-
lated switching power supply for easy initial operation.
_________ FAN ELECTRICAL NOISE
PLD-5000 Only
The PLD-5000 is equipped with a +5 V fan that cools the
heatsink. The fan in some cases may create excess
electrical noise. To reduce the electrical noise level you
must connect the heatsink to earth/chassis ground or the
system ground (power supply common). On the
PLDPCB-5000 Evaluation kit the heatsink is already
connected to the power supply common ground.
To ground the heatsink in other applications you need to
connect ground to the tapped hole in the bottom of the
heatsink.

PLD-200 / PLD-500 / PLD-5000
4
_______________________________________________ Electrical Specifications
Model Number
Drive Current Output
Output Current Range
Compliance Voltage with +5V input
Compliance Voltage
Temperature Coefficient
Short Term Stability (1 hr)
Long Term Stability (24 hrs.)
Noise and Ripple (rms)
Current Limit Range
Photodiode Feedback
Standard Range
Optional Range (TYPE A & B ONLY)
Const. Power Output Stability
External Modulation (Constant
Current)
Input Impedance
Transfer Function (0 to +5 V Max)
Bandwidth (3 dB)
Depth of Modulation at 20kHz
Power Supply
Power Up Trip Point
Power Down Trip Point
Max. Internal Power Dissipation
Setpoint and Monitor Accuracy
Limit I Setpoint, Output Setpoint, I & P
Setpoint Monitors (Pins 5, 7, & 8)
PLD-200
0 - 200 mA
> 3 V
> 28 V
< 100 ppm/°C
< 10 ppm
< 20 ppm
< 2 µA
0 - 200 mA
50 - 5000 µA
15 - 500 µA
< 0.02 %
1 MΩ
40 mA/V
65 kHz
90%
4.5 V
3.5 V
3 Watts
5%
PLD-500
0 - 500 mA
> 3 V
> 28 V
< 100 ppm/°C
< 10 ppm
< 20 ppm
< 5 µA
0 - 500 mA
50 - 5000 µA
15 - 500 µA
< 0.02 %
1 MΩ
100 mA/V
100 kHz
90%
4.5 V
3.5 V
9 Watts
5%
PLD-5000
0 - 5 Amps
> 3 V
> 28 V
< 100 ppm/°C
< 10 ppm
< 20 ppm
< 20 µA
0 - 5 Amps
50 - 5000 µA
15 - 500 µA
< 0.02 %
1 MΩ
1000 mA/V
100 kHz
90%
4.5 V
3.5 V
15 Watts
5%
Power Supply Requirements:
STD +5 V Operation, TYPE A or B lasers:
Pin 10: +5 VDC (+5.5 V MAX)
Add for High Compliance Voltage:
Pin 12: +3 VDC to +30 VDC (+32 V max)
Add for TYPE C lasers:
Pin 1: +8 VDC to +12 VDC (+12.5 V max)
Supply Current
PLD-200 & PLD-500: 50 mA plus max. LD current
PLD-5000: 150 mA plus max LD current
Operating Temperature
0 to +50°C (guaranteed)
-40 to +75°C (typical)
Warm-up
1 hour to rated accuracy
Weight
< 0.3 Ibs.
Size (H x W x D)
1.52" x 2.65" x 0.81" (PLD-200)
1.52" x 2.65" x 1.10" (PLD-500)
1.52" x 2.65" x 1.82" (PLD-5000)
Connector
15 pins, see page 5 for PCB layout pattern
See page 16 for connector recommendation if
not mounting PLD to a circuit board.
___________ General Specifications Compliance Voltage will vary depending on power supply voltages.
A maximum compliance voltage of +28 volts will be obtained with
+30 volts input. A maximum compliance voltage of +3 volts will
be obtained with +5 volts input. See page 8 for more detail.
With analog input (pin 9) shorted to common (pin 6).
Modulation bandwidth in Constant Power mode will depend on
photodiode response. It is typically 10% of Constant Current
Bandwidth.
The PLD series has internal control circuitry which turns the output
on and off depending on the voltage at pin 10. When the voltage
reaches the power up trip point (+4.5 V), and the LD Enable
(pin 3) is greater than 3 V, the module soft starts the laser diode.
When the voltage reaches the power down trip point (+3.5 V), the
module shunts current around the laser diode, powering it down in
a controlled fashion.
If thermistor or TE module are case common with the laser diode,
the PLD and temperature controller power supplies may need to
be isolated from each other or a bipolar supply may be required.
As pulse frequency increases on the analog input, the peak-to-
peak output amplitude diminishes. For example, these graphs
show the waveform shape at 10 Hz and 20 kHz. Depth of
modulation continues to decrease after 20 kHz.
5
1
4
5
3
2
1
2
3
6
4
4
6

PLD-200 / PLD-500 / PLD-5000
5
_____________________________________________ Mechanical Specifications
_________________________________________ PCB Layout Pattern - Top View

PLD-200 / PLD-500 / PLD-5000
6
Symbol
tON
tOFF
tSLOWSTART
Parameter
On Time
Off Time
Slow Start Time
Test Points
Load
Load
Load
Test Conditions *
PLD200 - 10 Ω
PLD500 - 1.0 Ω
PLD5000 - 0.1 Ω
PLD200 - 10 Ω
PLD500 - 1.0 Ω
PLD5000 - 0.1 Ω
PLD200 - 10 Ω
PLD500 - 1.0 Ω
PLD5000 - 0.1 Ω
Typ
6.8 µsec
6.8 µsec
6.8 µsec
6.8 µsec
6.8 µsec
6.8 µsec
1.5 sec
1.5 sec
1.5 sec
________________________________________________ Timing Characteristics
Test Setup for Parameter Measurement

PLD-200 / PLD-500 / PLD-5000
7
Slow Start Timing Large signal frequency response
Large signal frequency response Large signal frequency response
10 kHz square wave response Current Limit Operation
PLD-500
-3.5
-3
-2.5
-2
-1.5
-1
-0.5
0
0.5
10 100 1000 10000 100000
Frequency (Hz)
Gain (dB)
PLD-200
-3.5
-3
-2.5
-2
-1.5
-1
-0.5
0
0.5
10 100 1000 10000 100000
Frequency (Hz)
Gain (dB)
PLD-5000
-3.5
-3
-2.5
-2
-1.5
-1
-0.5
0
0.5
10 100 1000 10000 100000
Frequency (Hz)
Gain (dB)

PLD-200 / PLD-500 / PLD-5000
8
____________________ Typical Setup for Type A or B laser diode +5V operation
__________________________________ Typical Setup for Type A or B laser diode
High Compliance Voltage operation

PLD-200 / PLD-500 / PLD-5000
9
____________ Operating Procedures for Type A or B laser diodes +5V operation
________________ Constant Current Mode
With the Output Disabled:
(1) Configure Mode Switch to I. [switch on top of PLD]
(2) Set Limit Current: Monitor pins 5 & 6, adjust Current
Limit trimpot clockwise until the voltage at pin 5
corresponds to the desired voltage.
NOTE: Current limit needs to be set 0.2 V above desired limit
level.
Limit Current and I Monitor Transfer Functions
PLD-200 80mA/Volt
PLD-500 200mA/Volt
PLD-5000 2 Amp/Volt
Once Current Limit is detected, the output will turn off
and the LIM I led will illuminate red. The LIM I Status
voltage and LIM I LED will stay on until the LD Enable is
toggled off then on, and the error no longer exists.
(3) Set Operating Current. Use the transfer function from
step 2 to calculate the desired current. Monitor pins
7 & 6. With the OUTPUT ADJUST trimpot fully CCW,
enable the output. Slowly adjust the OUTPUT ADJUST
trimpot CW until the desired voltage is measured at
pin 7.
(4) Monitor the Photodiode (optional). If the Photodiode is
connected to the laser diode, monitor pins 8 & 6. The
PD switch on top of the PLD will determine the output
transfer voltage by the position of the switch:
L = 200 µA / V H = 2 mA / V
(15 - 500 µµ
µµ
µA range) (50 - 5000 µµ
µµ
µA range)
(5) Analog Input: This input is designed for analog signals
only and should not be used with TTL signals. You can
either input a DC voltage for remote current setpoint
control or use this input to modulate the laser diode.
This input sums directly with the output adjust trimpot.
The input transfer function will depend on the PLD
model in use.
Model Transfer Function
PLD-200 40 mA / Volt
PLD-500 100 mA / Volt
PLD-5000 1 Amp / Volt
_________________ Constant Power Mode
With the Output Disabled:
(1) Configure Mode Switch to P. [switch on top of PLD]
(2) Set Limit Current: Monitor pins 5 & 6, adjust Current
Limit trimpot clockwise until the voltage at pin 5
corresponds to the desired voltage.
NOTE: Current limit needs to be set 0.2 V above desired limit
level.
Limit Current and I Monitor Transfer Functions
PLD-200 80mA/Volt
PLD-500 200mA/Volt
PLD-5000 2 Amp/Volt
Once Current Limit is detected, the output will turn off
and the LIM I led will illuminate red. The LIM I Status
voltage and LIM I LED will stay on until the LD Enable is
toggled off then on and the error no longer exists.
(3) Set the output power.
Determine the photodiode current (IMat operating
current IOP) from data provided with your laser diode.
Monitor pins 8 & 6. Set the PD Range Switch for
the appropriate photodiode current
L = 15 - 500 µµ
µµ
µA H = 50 - 5000 µµ
µµ
µA
With the OUTPUT ADJUST trimpot fully CCW,
enable the output. When the laser reaches
threshold, the photodiode current changes abruptly
and rises quickly. Adjust the OUTPUT ADJUST
trimpot slowly until the voltage at pin 8 corresponds
to the desired photodiode current. Transfer
functions for Low and High Photodiode mode are:
L = 200 µA / V H = 2 mA / V
(4) Analog Input This input is designed for analog signals
only and should not be used with TTL signals. You can
either input a DC voltage for remote power setpoint or
use this input to modulate the laser diode. This input
sums directly with the output adjust trimpot. The input
transfer function is the same for all models and depends
on the PD RANGE switch setting.
L = 100 µA / V H = 1 mA / V
________________________________________________ External Adjustments
CAUTION: DO NOT change
switch positions while the
output is enabled; doing so
may damage your laser diode.
OUTPUT ADJUST: This 12-turn trimpot adjusts the laser diode forward current
in constant current mode and monitor photodiode current in constant power
mode.
ACTIVE LIMIT CURRENT ADJUST: This 12-turn trimpot adjusts the maximum
laser diode forward current.
OUTPUT ENABLED LED: Illuminates green when laser diode current is
enabled. The LED is not lit when the output is disabled.
LIMIT I LED: Illuminates red when output current has reached the limit
current level (as set by LIMIT I Adjust Trimpot). LED will stay red until the
output has been disabled then re-enabled with the condition corrected.
PD Range L
H
Mode P
I
15-500 µA
50-5000 µA
Constant Power
Constant Current
Switch Setting

PLD-200 / PLD-500 / PLD-5000
10
__________ Typical Setup for Type A or B laser diode Negative Supply operation

PLD-200 / PLD-500 / PLD-5000
11
______________________ Operating the PLDPCB with Type A & B Laser Diodes

PLD-200 / PLD-500 / PLD-5000
12
____________________________________ Typical Setup for Type C laser diodes
________________________________________________ External Adjustments
CAUTION: DO NOT change
switch positions while the
output is enabled; doing so
may damage your laser diode.
OUTPUT ADJUST: This 12-turn trimpot adjusts the laser diode forward current
in constant current mode and monitor photodiode current in constant power
mode.
ACTIVE LIMIT CURRENT ADJUST: This 12-turn trimpot adjusts the maximum
laser diode forward current.
OUTPUT ENABLED LED: Illuminates green when laser diode current is
enabled. The LED is not lit when the output is disabled.
LIMIT I LED: Illuminates red when output current has reached the limit
current level (as set by LIMIT I Adjust Trimpot). LED will stay red until the
output has been disabled then re-enabled with the condition corrected.
PD Range L
Constant Power
Constant Current
Mode P
I
This switch must be set in the L position for Type C laser
diodes. The photodiode range is 15 - 500 µA.
Switch Setting

PLD-200 / PLD-500 / PLD-5000
13
____________________________ Operating Procedures for Type C laser diodes
______________ Constant Current Mode
With the Output Disabled:
(1) Configure Mode Switch to I. [switch on top of PLD]
(2) Set Limit Current: Monitor pins 5 & 6, adjust Current
Limit trimpot clockwise until the voltage at pin 5
corresponds to the desired voltage.
NOTE: Current limit needs to be set 0.2 V above desired limit
level.
Limit Current and I Monitor Transfer Functions
PLD-200 80 mA/Volt
PLD-500 200 mA/Volt
PLD-5000 2 Amp/Volt
Once Current Limit is detected, the output will turn off and
the LIM I led will illuminate red. The LIM I Status voltage
and LIM I LED will stay on until the LD Enable is toggled
off then on, and the error no longer exists.
(3) Set Operating Current. Use the transfer function
from step 2 to calculate the desired current. Monitor
pins 7 & 6. With the OUTPUT ADJUST trimpot fully CCW,
enable the output. Slowly adjust the OUTPUT ADJUST
trimpot CW until the desired voltage is measured at
pin 7.
(4) Monitor the Photodiode (optional). If the Photo-
diode is connected to the laser diode, monitor pins 8 &
6. The PD switch on top of the PLD should be set to L:
L = 200 µA / V
(5) Analog Input: This input is designed for analog signals
only and should not be used with TTL signals. You can
either input a DC voltage for remote current setpoint
control or use this input to modulate the laser diode.
This input sums directly with the output adjust trimpot.
The input transfer function will depend on the PLD model
in use.
Model Transfer Function
PLD-200 40 mA / Volt
PLD-500 100 mA / Volt
PLD-5000 1 Amp / Volt
________________ Constant Power Mode
With the Output Disabled:
(1) Configure Mode Switch to P. [switch on top of
PLD]
(2) Set Limit Current: Monitor pins 5 & 6, adjust Current
Limit trimpot clockwise until the voltage at pin 5
corresponds to the desired voltage.
NOTE: Current limit needs to be set 0.2 V above desired limit
level.
Limit Current and I Monitor Transfer Functions
PLD-200 80mA/Volt
PLD-500 200mA/Volt
PLD-5000 2 Amp/Volt
Once Current Limit is detected, the output will turn off
and the LIM I led will illuminate red. The LIM I Status
voltage and LIM I LED will stay on until the LD Enable
is toggled off then on and the error no longer exists.
(3) Set the output power.
Determine the photodiode current (IMat operating
current IOP) from data provided with your laser
diode. Monitor pins 8 & 6. One photodiode range
is available. Set the PD Range Switch to L.
L Range = 15 - 500 µµ
µµ
µA
With the OUTPUT ADJUST trimpot fully CCW,
enable the output. When the laser reaches
threshold, the photodiode current changes
abruptly and rises quickly. Adjust the OUTPUT
ADJUST trimpot slowly until the voltage at pin 8
corresponds to the desired photodiode current.
The transfer function is:
L = 200 µµ
µµ
µA / V
This can be adjusted with a resistor (R)
connected between PD Cathode (Pin 15) and
AUX V+ (Pin 1). The new range can be
calculated with:
RANGE = 2.5 V / (R || 5 kΩ) [µA]
The new transfer function is:
1 / (R || 5 kΩ) [µA / V]
For example, a 500 Ωresistor across pins 15 and 2
converts the RANGE to:
2.5 / (500 * 5000 / (500 + 5000)) = 5500 µA max
and the transfer function to:
1 / (500 * 5000 / (500 + 5000)) = 2.2 mA / V
(4) Analog Input This input is designed for analog
signals only and should not be used with TTL signals.
You can either input a DC voltage for remote power
setpoint or use this input to modulate the laser diode.
This input sums directly with the output adjust trimpot.
The input transfer function is 100 µµ
µµ
µA / V for all
models. Note that the transfer function will change
if you change the photodiode RANGE. The new
transfer function is RANGE / 5 V

PLD-200 / PLD-500 / PLD-5000
14
_________________________ Operating the PLDPCB with Type C Laser Diodes

PLD-200 / PLD-500 / PLD-5000
15
_________________________________________________ APPLICATION NOTES
Remote Status LED
circuit
A 332 Ωresistor is in series with
the open drain output of the LIM
I Status pin, so an external LED
can be connected directly to
pin 4 as shown.
External Trimpot Circuit
Recommended circuit when an
external trimpot is used to control the
PLD output current.
Monitor Calibration Circuit
A small offset may be present when
measuring pin 5, 7, or 8 with respect to the
actual output. Add this circuit to remove any
offset.
Change PD Range for TYPE A or B laser diodes
Put a resistor across pins 14 (PD Anode) and 6 (Common) to
modify the PD range of the PLD.
Laser Diode Protection when using a long cable
With a cable longer than two feet, add a Schottky diode across
the laser diode.
Filter the PLD Output If you don’t need to modulate, you
can reduce the noise by filtering the output current.
Change the Modulation Transfer Function Parallel multiple
PLD-5000s for higher
current outputs
Constant Current Mode:
Each current source will
independently control the
current through the laser.
Constant Power Mode:
One current source acts as
a bias and the other
controls the power stability.

PLD-200 / PLD-500 / PLD-5000
16
Wavelength Electronics, Inc., P O Box 865, Bozeman, MT 59771
Phone [phone], Fax [phone]
email: [email protected], WEB: www.teamwavelength.com
If you have any questions or comments, please call
our technical staff at [phone]. Our hours are
8:00 a.m. to 5:00 p.m. MT.
Wavelength Electronics warrants this product for
90 days against defects in materials and workmanship
when used within published specifications. This
warranty extends only to purchaser and not to users of
purchaser’s products. If Wavelength receives written
notice of such defects during the warranty period, we
will either repair or replace products which prove to be
defective. Wavelength makes no warranty concerning
the fitness or suitability of its products for a particular
use or purpose; therefore, it is purchaser’s responsibility
to thoroughly test any product and independently conclude
its satisfactory performance in purchaser’s application.
No other warranty exists either expressed or implied,
and consequential damages are specifically excluded.
Wavelength Electronics reserves the right to change
circuitry and specifications without notification at any
time.
All products returned must be accompanied by a
Return Material Authorization (RMA) number obtained from
the Customer Service Department. Returned product will
not be accepted for credit or replacement without our
permission. Transportation charges or postage must be
prepaid. All returned products must show invoice number
and date and reason for return.
In the United States, the Food & Drug Administration is
responsible for monitoring laser products. These products
must comply with certain requirements in order to be sold
to an end user. The PLD series has been registered as an
OEM product. It does not comply with regulations. You
must incorporate it into your system and that system must
comply with federal regulations. Wavelength Electronics
has experience with the government requirements. We
can help you ensure that your device is compliant. Please
contact us if you have any questions.
____________________________________ CUSTOMER SERVICE & WARRANTY
The PLD leads are meant to solder into a circuit board. If you want to use a connector, we recommend the
following:
Qty
1 Molex Crimp Terminal Housing 15 pin 7880 (High Pressure) Part Number: 10-11-2153
15 Molex Crimp Terminal 7879 (High Pressure) Part Number: 08-55-0129
It is important to maintain contact between the PLD and laser diode at all times. If the connection to the laser diode
breaks and re-connects quickly, the circuitry cannot prevent transient spikes and the laser diode likely will be
damaged.
Molex Crimp Terminal Housing 7880 (High Pressure)
(only 6 pins shown)
15 pin Molex Part Number: 10-11-2153
L x W = 0.51” x 1.52” (12.9 mm x 38.6 mm)
Molex Crimp Terminal 7879 (High Pressure)
for wire size 22 - 30 AWG, Select Gold Plating
Molex Part Number: 08-55-0129
L x W = 0.44” x 0.76” (11.2 mm x 1.93 mm)
__________________________________ USING THE PLD WITH A CONNECTOR