Newport LDC-3706 Series, User Manual

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December 2019 97 LDC-3706 Series Laser Controller
Calibration Overview
The LDC-3706 Laser Controller should be calibrated every 12 months or whenever
performance verification indicates that calibration is necessary.
All calibrations can be done with the case closed. The instrument is calibrated by changing the
internally stored digital calibration constants.
Running through calibration procedures will overwrite the factory calibration data
stored on the instrument. Contact ILX Lightwave for proper annual factory
calibration services.
Lasers and TECs should never be connected to the output of the LDC-3706 during
calibration procedures. All calibration routines have to potential to surpass
protection limits and can result in damage to lasers and TECs.
Recommended Equipment
Recommended test equipment for calibrating the LDC-3706 instrument is listed in Table 5.1.
Equipment other than that shown in the table may be used if the specifications meet or exceed
those listed.
Table 5.1 Recommended calibration equipment
DESCRIPTION SPECIFICATION
DMM 8 1/2 Digit
Metal Film Resistors 5 k Ω (for all temperature sensors)
100 Ω (for MDI)
1.2 k Ω and 300 Ω (for 1 mA RTD)
60 Ω and 240 Ω (for 2.5 mA RTD)
High Power Resistors 1 Ω , 25 W (for LDI of LDC-3726 & LDC-3736)
0.1 Ω , 100 W (for LDI and LDV of LDC-37620)
2 Ω , 150 W (for ITE and VTE)
4.5 Ω , 100 W (for LDV of LDC-3726 & LDC-3736)
Optocoupler 0 to 10 mA for photodiode feedback
> 40 mA maximum input diode current,
< 20 mA maximum collector current (for MDI)
Environmental Conditions
ILX Lightwave recommends calibration at 23°C ± 1.0°C. When necessary, however, the
LDC-3706 instrument may be calibrated at its intended use temperature if this is within the
specified operating temperature range of 10 to 40°C.
Warm-up
The LDC-3706 instrument should be allowed to warm-up for at least 1 hour before calibration
unless otherwise specified.