ILX Lightwave LDC-3700B Series - Page 99

COMMAND REFERENCE
Command Reference
84 LDC-3700 Series
CHAPTER 4
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The LASer:SET:MDI? query returns the laser monitor PD current set point value (when CALPD = 0),
in µA.
Notes The monitor photodiode current is directly proportional to the laser optical output power. Therefore,
the I
PD
set point may be used to control optical output of the laser.
Examples "las:set:mdi?" −response: 30.0, means the laser monitor PD current is set point is 30 µA, for use in
constant P mode with CALPD = 0.
"LAS:Set:MDI?" −response: 100.0 means the laser monitor PD current is set point is 100 µA, for use
in constant P mode with CALMD = 0.
The LASer:SET:MDP? query returns the laser monitor PD power set point value (when CALMD
[CAL PD] is not zero), in mW.
Notes This set point is used in constant MDP mode only.
Examples "LAS:Set:MDP?" −response: 10.0, means the laser monitor PD feedback set point is 10.0 mW
(CALPD > 0).
"Laser:Set:MDP?" −response: 25.0, means the laser monitor PD feedback set point is 25.0 mW
(CALPD > 0).
The LASer:STEP command is used to increment or decrement the selected laser control mode set
point by the given amount, when used with the LASer:INC or LASer:DEC command.
Parameters An integer value of the step amount, in the range 1 to 9999.
Notes The step of 1 corresponds to the smallest display resolution for the mode. For example, a step of 1
means 0.1 mA (3744B) or 0.01 mA (3724B) or 0.002 mA (3714B, 100 mA range) or 0.001 mA
(3714B, 50 mA range), 0.01 mW, or 1 µA (if CALPD = 0).
Examples "Las:Mode:i; Las:ldi 20; Las:Step 100; Las:Inc; Las:set:ldi?" −action: sets the step to 1.0 mA
(3724B), so the Las:set:ldi? query will return a value of 21.0 mA.
"LAS:STEP 1000" −action: sets the step size to 1000; could mean 10.0 mA (3724B), 10.0 mW, or
100 µA.
LASer:SET:MDI?
COMMON
DEVICE DEPENDENT
FRONT PANEL
LASer:SET:MDP?
COMMON
DEVICE DEPENDENT
FRONT PANEL
LASer:STEP
COMMON
DEVICE DEPENDENT
FRONT PANEL
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