Keysight N777 C Series Programming Manual page 80

4 Measurement Operations & Settings
The instrument may not be able to output a signal with the maximum programmable power, it will output a signal with the
maximum power. Use the :WAVelength:SWEep:PMAX:CURRent? to query the maximal possible power at output. Current
output power is minimum of this command or :WAVelength:SWEep:PMAX:CURRent?
The default units are DBM or W, depending on the unit selected using the following command:
:SOURce0:POWer:UNIT
Parameters: Any value in the specified range (see the appropriate User's Guide).
Also allowed are:
Response: None
Example: :sour0:pow 5mW
Affects: All N777xC tunable laser sources
Command: :SOURce0:POWer[:LEVel][:IMMediate][:AMPLitude]?
Syntax: :SOURce0:POWer[:LEVel][:IMMediate][:AMPLitude]?<wsp>[MIN|DEF|MAX]
Description: Returns the amplitude level of the output power.
The value returned is the actual amplitude that is output, which may be different from the value set for the output. If these
two figures are not the same, it is indicated in the :STATus:OPERation register.
Parameters: Also allowed are:
Response: Amplitude level relevant to the current value or specified parameter (if MIN, MAX, or DEF are chosen as a parameter).
Example: :sour0:pow? -> +8.00000000E-004
Affects: All N777xC tunable laser sources
Command: :SOURce0:POWer:STATe
Syntax: :SOURce0:POWer:STATe<wsp><boolean>
Description: Switches the laser of the chosen source on or off.
Parameters: A boolean value:
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MIN: minimum programmable value
MAX: maximum programmable value
DEF: This is not the preset (*RST) default value, but is the maximum programmable level
MIN: minimum amplitude level
MAX: maximum amplitude level
DEF: default value
0: Laser Off
1: Laser On
Keysight N777xC Series Tunable Laser Family Programming Guide