ILX Lightwave LDX-3200 Series User Manual page 53

n Front Panel
n Remote
The LASer:CALMD? query returns the value of the laser's photodiode feedback responsivity (CAL PD
parameter) setting.
SYNTAX DIAGRAM
POINTS OF
INTEREST If this value is 0, the LDX-3200 Series Precision Current Source will be set to operate in constant
I mode, and the I
PD
Series Precision Current Source will be set to operate in constant P
point value will be in effect.
If this value is 0, the front panel P
EXAMPLES "LASER:CALMD?" -response: 0, means the LDX-3200 Series Precision Current Source is set
for operation in constant I
"Las:Calmd?" -response: 1.1, means the LDX-3200 Series Precision Current Source is set for
operation in constant P
1.1 µA/mW. 1.1 µA of photodiode feedback current represents 1 mW of optical power.
¨ Front Panel
n Remote
The LAS:CAL:CONST? query returns a stored calibration value. It is intended for factory use only.
n Front Panel
n Remote
The LASer:CAL:LDI command is used to enter the LASER current set point, measurement, and limit (in low
bandwidth mode) calibration mode.
COMMAND REFERENCE
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: :
LAS
set point value will be in effect. If this value is non-zero, the LDX-3200
PD
will display "-.-", and no P
PD
mode (if P mode is also selected).
PD
mode (if P mode is also selected) and the responsivity is set to
PD
PAGE 8
LASer:CALMD?
CALMD
?
CALPD
mode, and the P
PD
value can be calculated.
PD
LAS:CAL:CONST?
LASer:CAL:LDI
set
PD
CHPT 4