Lightwave Communications LDX-3232 manual LASerSTEP?, Las Tol, LASerTOLerance command

COMMAND REFERENCE

LDX-3232 Device-Dependent Command Reference

C H A P T E R 4

LASer:STEP?	FRONT PANEL
	REMOTE

The LASer:STEP? query is used to read back the LASer STEP value. This value is used to increment or decrement the selected laser control mode setpoint by the given amount when used with the LASer:INC or LASer:DEC command.

	:	LAS	:	STEP	?
	- where the response is an integer value.
Examples	"Las:Mode:LDI; Las:Step?"		-response: 1 means the step size is 0.1 mA, since Const I

mode is in effect.

"LAS:MODE:MDP; LAS:CALMD 1; LAS:STEP?" -response: 10 means the step size is 1.0 mW, since Const P mode is in effect.

LASer:TOLerance	FRONT PANEL
	REMOTE

The LASer:TOLerance command allows the programmer to determine the LASER current tolerance and time window for it to occur, in order that the operation complete flag be set after a "LASer:OUTput 1" command is issued or the LASER setpoint is changed.

: LAS : TOL

<white

space>

<nrf

value>

,

<nrf

value>

Parameters Two <nrf values>; the first represents the LASER current tolerance in mA with a range of

0.1to 100.0 mA; and the second represents the time window, in seconds, with a range of 0.001 to 50.000 seconds.

Notes	The LDX-3232 defaults to a tolerance of 1.0 mA for three seconds, unless changed by
	the LASer:TOLerance command.
	If the LDX-3232 is operated in P mode, the current tolerance parameter is not used.
	Instead a fixed value of 50 µA is used for the IPD current. A fixed value of 1 mW is used for
	PPD power, and only the time window parameter may be adjusted.

Note: If the tolerance is set too tight it may never be achieved. This is due to the calibration of the setpoint and measurement values.

Examples	"Las:Tol 0.5,10" -action: the LDX-3232's LASER current source will be in tolerance when
	the LASER current is within 0.5 mA for 10.000 seconds.

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