THORLABS ITC510 - Reading the Optical Power from the Display (POPTP); Reading the Laser Diode Voltage (VLD); Reading the Bias Voltage (VBIAS)

3.6 ITC5xx specific commands
ITC500 / page 79
3.6.12 Reading the optical power from the display (POPTP)
Syntax: ":POPTP:ACT?"
Response: [:POPTP:ACT <NR3>]
Description: Queries the actual optical power, that is calculated from the position of
the potentiometer marked ADJ next to the LED P
LD
. This is the optical
power shown on the display. Unit: [W]
NOTE
This queries the optical power measured by the internal monitor diode that
is displayed on the 4 ½ digit display.
3.6.13 Reading the laser diode voltage (VLD)
Syntax: ":VLD:ACT?"
Response: [:VLD:ACT <NR3>]
Description: Queries the actual laser diode voltage. Unit: [V]
3.6.14 Reading the bias voltage (VBIAS)
Syntax:
":VBIAS:ACT?"
Response: [:VBIAS:ACT <NR3>]
Description: Queries the actual photo diode bias voltage. Unit: [V]
NOTE
This query always tells the bias voltage set with the potentiometer ADJ
next to the LED PD BIAS even with the bias voltage switched off.