ILX Lightwave LDX-36000 Series User Manual page 127

LASer:PDBIAS?
Action
Parameters
Notes
Examples
LASer:Power?
Action
Parameters
Notes
Examples
03_10
Returns the value of the reverse bias voltage setting.
None.
The photodiode reverse bias voltage measurement can be displayed on the front panel
Display1. See Chapter 3 for more information.
"LAS:PDBIAS?" - response: "10.1"; a reverse bias of 10.1V is measured.
Returns the output optical power setpoint from which is calculated the current source
setpoint value.
None.
The specified output power is NOT a setpoint for constant power mode as is the case for
other ILX Lightwave instrumentation. It is a constant current mode whose output is back-
calculated from a specified output optical power and a laser threshold and slope
efficiency. See Chapter 3 for additional information.
If the laser threshold value has been set to zero (the default value), this mode is
disabled.
"LAS:P?; LAS:LDI?" -response: "1.25; 3.7" using the laser threshold and slope efficiency
values from the previous example, 3.73 A would be required to produce the 1.25 W of
optical output specified by the setpoint. The current source would set its output to 3.7 A.
C O M M A N D R E F E R E N C E
Command Reference
5
C H A P T E R
C
OMMON
F P
RONT ANEL
D D
EVICE EPENDENT
C
OMMON
F P
RONT ANEL
D D
EVICE EPENDENT
111
LDX-36000 Series
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