Lightwave Communications LDX-3232 manual LASerSETLDI?, LASerSETMDI?

COMMAND REFERENCE

LDX-3232 Device-Dependent Command Reference

C H A P T E R 4

LASer:SET:LDI?	FRONT PANEL
	REMOTE

The LASer:SET:LDI? query returns the constant I value that is used for both output ranges and both bandwidths.

: LAS : SET :

	LDI	I	?
	- where the response is the constant I setpoint value, in mA.
Notes	In local operation, the constant I setpoint is read by selecting I or IHBW mode, then
	pressing and holding down the SELECT switch in the DISPLAY area of the front panel.
	When the mA indicator is blinking, the display will show the LDI setpoint.
Examples	"LAS:SET:LDI?" -response: 50.0, means the laser output current setpoint value is
	50.0 mA.
	"Laser:set:ldi?" -response: 120.0 means the laser output current setpoint value is
	120.0 mA.

LASer:SET:MDI?	FRONT PANEL
	REMOTE

The LASer:SET:MDI? query returns the laser monitor photodiode current setpoint value (when CALPD=0), in µA.

: LAS : SET :

	MDI	IPD	?
	- where the response is the constand IPD setpoint value, in µA.
Notes	In local operation, the MDI setpoint is read by selecting P mode, then pressing and
	holding down the SELECT switch in the DISPLAY area of the front panel. When the µA
	indicator is blinking, the display will show the MDI setpoint.
	The monitor photodiode current is directly proportional to the laser optical output power.
	Therefore, the MDI (IPD) setpoint may be used to control optical output of the laser.
Examples	"las:set:mdi?" -response: 30.0, means the laser monitor photodiode current is setpoint is
	30 µA, for use in constant P mode with CALPD = 0.

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