Lightwave Communications LDX-3232 - 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 <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 (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
<white
space>
<nrf
value>
: :
MDP
P
LAS
:
LAS
MDP
: ?
P