Lightwave Communications LDX-3232 manual LASerMDP?, Mdp Las

C H A P T E R 4

COMMAND REFERENCE

LDX-3232 Device-Dependent Command Reference

LASer:MDP	FRONT PANEL
	REMOTE

The LASer:MDP command sets the value of the optical power setpoint in mW if the CALMD (CAL PD) responsivity is greater than 0.

Syntax Diagram

MDP

: LAS :

P

<white

space>

<nrf

value>

Parameters	An <nrf value> that represents the photodiode feedback power in mW.
Notes	If the CALMD (CAL PD) parameter is set to 0, the LAS:MDP value will not be used. In
	this case, the measured MDP would be invalid, and the MDI (IPD) setpoint would be used.
Examples	"Las:Mdp 40" -action: The LASER output is controlled so that the photodiode feedback
	power remains constant at 40 mW.
	"Laser:MDP 200" -action: The LASER output is controlled so that the photodiode
	feedback power remains constant at 200 mW.

LASer:MDP?				FRONT PANEL
				REMOTE
	The LASer:MDP? query returns the value of the laser photodetector power measurement
	in mW.
				MDP
	:	LAS	:	?
				P
	- where the response is the most recent LASER power measurement.
Notes	The response is in mW. The response is valid, even when the unit is not in constant P
	mode. This measurement is updated approximately once every 600 ms.
Examples	"Las:Mode:MDP; Las:Calmd 460; Las:MDp?" -response: 100.0, means 100 mW of
	photodetector power. This feedback is controlling the laser current output.

"LAS:MODE:IHBW; LAS:MDP?" -response: 20.0, means 20 mW of photodetector power, but photodiode monitor current is not controlling the laser output current.

70 LDX-3232