December 2019 ii LDC-3706 Series Laser Controller
Adjust Knob and Enable Button ..................................................................................................... 19
Parameters Setup ........................................................................................................................... 20
PID Temperature Control ............................................................................................................... 21
Temperature Control Mode ............................................................................................................ 23
Laser Current Source Setup ........................................................................................................... 23
Current Control Mode ..................................................................................................................... 25
Display ............................................................................................................................................ 25
Error Indicators ............................................................................................................................... 26
General Operating Procedures ................................................................................. 26
Warm-Up and Environmental Considerations ................................................................................ 26
Operating the Laser Current Source from the Front Panel ....................................... 27
Using the LDC-3706 Controller’s Trigger Output Function ............................................................ 30
Operating the Temperature Controller from the Front Panel .................................... 31
General Guidelines for Sensor Selection and Safety Limits .......................................................... 31
Sensor Options ............................................................................................................................... 31
Safety Limits ................................................................................................................................... 35
Constant Temperature Mode Operation ................................................................... 36
Constant Sensor Mode Operation ............................................................................ 37
Constant Current Mode Operation ............................................................................ 38
Resistive Heater Mode Operation ............................................................................. 39
Chapter 3: Remote Operation ................................................................... 41
GPIB Address ........................................................................................................... 41
Basic GPIB Concepts ............................................................................................... 41
Data and Interface Messages ........................................................................................................ 41
Talkers, Listeners, and Controllers ................................................................................................. 42
GPIB Cable Connections ............................................................................................................... 42
The GPIB Connector ...................................................................................................................... 43
Reading the GPIB Address ............................................................................................................ 44
Changing the GPIB Address .......................................................................................................... 44
Basic USB Concepts ................................................................................................ 44
Changing Between Local and Remote Operation ..................................................... 45
GPIB vs. USB Communication ................................................................................. 45
Command Syntax ..................................................................................................... 45
Letters ............................................................................................................................................. 45
White Space ................................................................................................................................... 46
Terminators .................................................................................................................................... 46
Command Separators .................................................................................................................... 46
Parameters ..................................................................................................................................... 46
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