December 2019  60  LDC-3706 Series Laser Controller 
 
NAME  FUNCTION  INSTrument 
SOURce[1]:CURRent:LIMit:LOW <nrf>  Set lower TEC current limit.  TEC 
SOURce[1]:CURRent:LIMit:LOW?  Report lower TEC current limit.  TEC 
SOURce[1]:CURRent:LIMit[:AMPLitude] <nrf>  Set laser current limit.  LAS 
SOURce[1]:CURRent:LIMit[:AMPLitude]?  Report laser current limit.  LAS 
SOURce[1]:CURRent:RANGe <nrf>  Set range of laser current source.  LAS 
SOURce[1]:CURRent:RANGe? 
Report currently selected laser 
current source range. 
LAS 
SOURce[1]:CURRent[:LEVel][:IMMediate] <nrf> 
Set control setpoint for LDI or 
ITE, depending on the currently 
selected instrument mode. 
LAS, TEC 
SOURce[1]:CURRent[:LEVel][:IMMediate]?  
Report control setpoint for LDI or 
ITE, depending on the currently 
selected instrument mode. 
LAS, TEC 
SOURce[1]:FUNCtion:[:MODE] <string> 
Set the operating mode for the 
currently selected instrument mode.  
LAS, TEC 
SOURce[1]:FUNCtion[:MODE]? 
Report the operating mode for the 
currently selected instrument mode.  
LAS, TEC 
SOURce[1]:POWer:LIMit <nrf>  Set the photodiode power limit.  LAS 
SOURce[1]:POWer:LIMit? 
Report the photodiode power limit 
setpoint. 
LAS 
SOURce[1]:POWer[:LEVel][:IMMediate] <nrf>  Set the laser diode power setpoint.  LAS 
SOURce[1]:POWer[:LEVel][:IMMediate]? 
Report the laser diode power 
setpoint. 
LAS 
SOURce[1]:RESistance:LCONstants:DERivative <nrf> 
Set the “D” term for the TEC 
controller PID control loop. 
TEC 
SOURce[1]:RESistance:LCONstants:DERivative? 
Report the “D” term for the TEC 
controller PID control loop. 
TEC 
SOURce[1]:RESistance:LCONstants:INTegral <nrf> 
Set the “I” term for the TEC 
controller PID control loop. 
TEC 
SOURce[1]:RESistance:LCONstants:INTegral? 
Report the “I” term for the TEC 
controller PID control loop. 
TEC 
SOURce[1]:RESistance:LCONstants[:GAIN] <nrf> 
Set the “P” term for the TEC 
controller PID control loop. 
TEC 
SOURce[1]:RESistance:LCONstants[:GAIN]? 
Report the “P” term for the TEC 
controller PID control loop. 
TEC 
SOURce[1]:RESistance:PROTection:LOW <nrf> 
Set the TE controller resistance 
lower limit. 
TEC 
SOURce[1]:RESistance:PROTection:LOW? 
Report the TE controller resistance 
lower limit. 
TEC 
SOURce[1]:RESistance:PROTection[:HIGH] <nrf> 
Set the TE controller resistance 
upper limit. 
TEC 
SOURce[1]:RESistance:PROTection[:HIGH]? 
Report the TE controller resistance 
upper limit. 
TEC 
SOURce[1]:RESistance:SPOint <nrf>  Set the TE controller resistance  TEC