Wavelength Electronics LDTC2/2E, Техническое описание и руководство по эксплуатации

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LDTC2/2 LASER DIODE DRIVER AND TEMPERATURE CONTROLLER
PIN DESCRIPTIONS
Table 1. Pin Descriptions and Wire Colors
PIN NAME
CABLE
COLOR
PIN DESCRIPTION
Connector J1 – WCB300
1 (VDD)
Supply Voltage to Control
Electronics and Laser
Diode
Red
C5 to +12 V between Pins 1 & 3 to power the control electronics
and the output drive to the laser diode. Reference the Safe Operating
Area Calculator .
2 (VS)
Supply Voltage to Output
TEC Drive
White
C5 to +28 V between Pins 2 & 3 to drive the TEC output stage.
Reference the Safe Operating Area Calculator .
3 (GND) Power Supply Ground Black Connect power supply ground to this pin.
Connector J2 – WCB309
1 (COM) Common Tan
Low current GND for monitors, DACs, External VSET, etc.
PIN 1 not available on Rev. A
2 (PD MON) PD Monitor in CC mode Pink
Photodiode Monitor in Constant Current mode.
PIN 2 not available on Rev. A
3 (LD SHD)
LD Shutdown/Interlock
(TTL-Compatible)
Grey
Float or GND = Enable Laser Diode Current
Input > 3 V = Disable Laser Diode Current
4 (COM) Common Violet Low current GND for monitors, DACs, External VSET, etc.
5 (R LD SET)
Remote Laser Diode
Setpoint/Modulation Input Yellow
Voltage Input range is 0 to 2 V. Transfer function is given in Table 2 .
6 (COM) Common Orange Low current GND for monitors, DACs, External VSET, etc.
7 (LD P MON) Photodiode Monitor Blue
Monitor the laser diode power. This pin produces a voltage proportional
to the current produced by the laser diode monitor photodiode. See
Table 2 for the transfer function.
8 (LD I MON) LD Current Monitor Brown
Monitor the laser diode forward current. This pin produces a voltage
proportional to the current flowing through the laser diode. See
Table 2
for the transfer function
9 (ACT T MON)
Actual Temperature
Monitor
Green
Monitor the actual voltage produced by the temperature sensor. The
voltage produced and transfer function to temperature is determined
by the sensor chosen.
10 (SET T MON) Setpoint Monitor Red
Monitor the temperature setpoint voltage. The voltage produced and
transfer function to temperature is determined by the sensor chosen.
11 (R TC SET)
Remote Temperature
Setpoint
White
Connect a voltage source between Pin 11 and Pin 12 to control the
temperature setting remotely. A default value of 1 V (approximately 25°C
with a 10 kΩ thermistor) will be seen by the WTC if the voltage at this
pin drops below 0.3 V.
12 (COM) Common Black Low current GND for monitors, DACs, External VSET, etc.
Connector J3 – WCB301
1 (LDC) Laser Diode Cathode Black Laser diode cathode connection.
2 (PDA) Photodiode Anode White Photodiode anode connection.
3 (PDC) Photodiode Cathode Blue Photodiode cathode connection.
4 (LDA) Laser Diode Anode Red Laser diode anode connection.
5 (COM) Common Green Low current GND for monitors, DACs, External VSET, etc.
6 (TEC+) TEC+ Connection Red/Black Cooling current flows from this pin when using an NTC sensor.
7 (TEC-) TEC- Connection Orange Heating current flows from this pin when using an NTC sensor.
8 (SEN+)
[1]
Temperature White/Black
Positive side of temperature sensor. Bias current is driven from SEN+
to SEN-.
9 (SEN-)
[1]
Temperature Sensor- Orange/Black
Ground connection for the temperature sensor. Refer to Specifications
table for input voltage range and damage thresholds.
10 (COM) Common Green/Black Low current GND for monitors, DACs, External VSET, etc.
[1]
See page 14 for additional information regarding the use of RTDs, AD590, and LM335 sensors with the LDTC2/2.