C A L I B R A T I O N A N D T R O U B L E S H O O T I N G
Calibration Overview
04_09
LDC-3700C Series
143
C H A P T E R
5
4
Enter the
LASER
I
calibration mode by pushing the (
Communications
)
LOCAL
and
(
LASER
DISPLAY
)
I
switches at the same time. The TEC display will blank and the
controller will drive the LASER current output to the set point and the LASER display will
indicate output current in mA.
5
Calculate the actual current through the load as described in step b. Press and hold in the
(
PARAMETER
)
SET
switch and turn the
ADJUST
knob until the
LASER
display indicates
the calculated actual current.
6
Release the (
PARAMETER
)
SET
switch. After the (
PARAMETER
)
SET
switch is
released, the Controller will drive the LASER current output to about 25% of the first
calibration set point.
7
Calculate the measured current again through the load resistor.
8
Press and hold in the (
PARAMETER
)
SET
switch and turn the
ADJUST
knob until the
LASER
display indicates the actual current as calculated in step 7.
9
Release the (
PARAMETER
)
SET
switch to accept the second calibration point. After the
(
PARAMETER
)
SET
switch is released, the Controller will calculate the calibration
constants, store them to nonvolatile memory. In low bandwidth calibration mode, the
LDC-3700C Series Laser Diode Controller will also perform current limit calibrations for
I
(Constant Current) and
P
(Constant Power) modes, indicated by the
CURRENT LIMIT
LED flashing.
10
Change the Laser Mode to I
HBW
(high bandwidth constant current mode). Repeat the
calibration procedure as described above.
Summary of Contents for LDC-3700C Series
Page 2: ......
Page 8: ...L I S T O F FIG U R E S vi LDC 3700C Series...
Page 10: ...L I S T O F TA B L E S viii LDC 3700C Series...
Page 78: ...RE M O T E O PE R A T I ON Command Syntax 62 LDC 3700C Series C H A P T E R 3...
Page 150: ...C O M M A N D RE F E R E N C E Command Reference 134 LDC 3700C Series C H A P T E R 4...