ILX Lightwave LDX-32420 User Manual page 77

4
C H A P T E R
LASer:MDI <Amps>
LASer:MDI?
Parameters
Notes
Examples
LASer:MDP <Watts>
LASer:MDP?
Parameters
Notes
Examples
LASer:MODE?
Notes
Examples
60
 LDX-32420
C O M M A N D R E F E R E N C E
LDX-32420 Device-Dependent Command Reference
The LASer:MDI command sets the value of the optical power setpoint, in µA, if the
CALMD (CAL PD) responsivity is 0.
The LASer:MDI? query returns the value of the laser photodetector current measurement
in µA.
Amps: represents the photodiode feedback current, in µA.
If the CALMD (CAL PD) parameter is not set to 0, the LAS:MDI value will not be used. In
this case, the measured MDI would be converted to MDP (P
and the MDP (P
The response is in µA. The response is valid, even when the unit is not in constant P
mode.
This measurement is updated approximately once every 600 ms.
"Las:Mdi 40" - action: The LASER output is controlled so that the photodiode feedback
current remains constant at 40 µA.
"Las:Mode:MDP; Las:Calmd 0; Las:MDi?" - response: 100.0, means 100 µA of
photodetector current. This feedback is controlling the laser current output.
The LASer:MDP command sets the value of the optical power setpoint in W if the
CALMD (CAL PD) responsivity is greater than 0.
The LASer:MDP? query returns the value of the laser photodetector power measurement
in W.
Watts: represents the photodiode feedback power in W.
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
The response is in W. The response is valid, even when the unit is not in constant P
mode. This measurement is updated approximately once every 600 ms.
"Las:Mdp 40" - action: The LASER output is controlled so that the photodiode feedback
power remains constant at 40 W.
"Las:Mode:MDP; Las:Calmd 46; Las:MDp?" - response: 20, means 20 W of
photodetector power. This feedback is controlling the laser current output.
The LASer:MODE? query returns the selected laser control mode.
I mode is the same as I mode (low bandwidth), except that the output low bandpass
HBW
filter is disabled in I
"LAS:MODE?" - response: ILBW, means that constant I (current) mode is in effect for
the laser output.
) setpoint would be used.
PD
mode.
HBW
F P
RONT ANEL
R
EMOTE
, by the CAL PD factor),
PD
F P
RONT ANEL
R
EMOTE
) setpoint would be used.
PD
F P
RONT ANEL
R
EMOTE