ILX Lightwave LDC-3926339 User Manual page 69

C O M M A N D R E F E R E N C E
4
C H A P T E R
GPIB Command Reference
LASER:LIMit:I?
Parameters
Notes
Examples
LASER:LIMit:MDP
Parameters
Notes
Examples
LASER:LIMit:MDP?
Parameters
Examples
LASER:LIMit:V
Parameters
Notes
Examples
LASER:LIMit:V?
Parameters
Notes
Examples
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LDC-3926339
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The LASER:LIMit:I? query returns the value of the laser current limit.
None. The response is an <nrf value>.
The current limit is valid for all modes of operation.
LASER:LIM:I?-response: 40, means the laser current limit is 40 mA.
Laser:LIM:I?-response: 300, means the laser current limit is 300 mA.
The LASER:LIMit:MDP command sets the Laser optical power limit. If the measured optical power
exceeds this value, the current source output will be shut off, and a Power Limit error will be
generated.
An <nrf value> which represents the laser monitor photodiode power limit, in mW.
The monitor photodiode power limit condition normally shuts the output off, but this can be disabled
using the LASER:ENABle:OUTOFF command.
The laser optical power is a calculated value. The module derives the optical power by dividing the
monitor diode current (MDI) by CalPD.
The optical power limit is in effect for all operating modes with the following exceptions: if CalPD is
set to 0.0, the power is not calculated and the limit test is not performed. The limit test is also not
performed during calibration.
LASER:LIM:MDP 200-action: sets the laser monitor photodiode power (optical power) limit to 200
mW.
The LASER:LIMit:MDP? query returns the value of the laser optical power limit setpoint.
None. The response is an <nrf value>.
LASER:LIM:MDP?-response: 300.0, means the monitor PD power limit is set to 300.0 mW.
The LASER:LIMit:V command sets the laser voltage limit (VLim) value. If the laser diode voltage
exceeds this value, the output will automatically turn off, and an Open Circuit error will be generated.
An <nrf value> which represents the laser limit voltage, in volts.
Voltage limit is in effect in all modes of operation. If the laser diode voltage exceeds this value, the
current source will automatically turn off and generate an Open Circuit error.
The range for the voltage limit is 0.1 to 7.5 volts.
LASER:LIM:V 4.6-action: the laser voltage limit is set to 4.6 volts.
:Laser:Limit:v 6.1-action: the laser voltage limit is set to 6.1 volts.
The LASER:LIMit:V? query returns the value of the laser voltage limit setpoint.
None. The response is an <nrf value>.
The voltage limit is valid for all modes of operation.
LASER:LIM:V?-response: 4.0, means the laser voltage limit is 4.0 volts.