Laser:mdp – Lightwave Communications LDX-3232 User Manual
Page 86
C O M M A N D R E F E R E N C E
LDX-3232 Device-Dependent Command Reference
70
LDX-3232
C H A P T E R
4
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
Parameters
An
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 (I
PD
) 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.
The LASer:MDP? query returns the value of the laser photodetector power measurement
in mW.
- 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.
LASer:MDP
F
RONT
P
ANEL
R
EMOTE
LASer:MDP?
F
RONT
P
ANEL
R
EMOTE
space> value> : : MDP P LAS : LAS MDP : ? P