ILX Lightwave LDC-3926339 User Manual page 59

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
*IDN?
Action
Response
LASER:
LASER:BIAS
Parameters
Notes
Examples
LASER:BIAS?
Parameters
Notes
Examples
LASER:CALPD
Parameters
Notes
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LDC-3926339
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Requests the instrument to identify itself.
Returns a comma delimited standard format ASCII identification string, from information stored in
the instrument during manufacture.
The LASER: command path is used to access the LDC-3926339 current source commands. The
following command paths may be reached from the LASER: command path:
LASER:CAL:
LASER:ENABle:
LASER:LIMit:
LASER:MODE:
LASER:SET:
The following commands may be reached directly from the LASER: command path.
LASER:BIAS LASER:LDI
LASER:BIAS? LASER:LDI?
LASER:CALPD LASER:INC
LASER:CALPD? LASER:LDV?
LASER:COND? LASER:MDI
LASER:DEC LASER:MDI?
LASER:EVEnt? LASER:MDP
The LASER:BIAS command turns the laser photodiode bias on or off.
An <nrf value>; 1 = on, 0 = off.
When the BIAS is on, a bias of ñ5 V is placed across the photodiode terminals.
LASER:BIAS ON-action: sets LASER photodiode bias output on.
The LASER:BIAS? query returns the status of the photodiode bias selection.
None. The response is an <nrf value>.
Photodiode bias is turned off when a *RST command is issued.
LASER:BIAS?-response: 0, means that the laser photodiode bias is off.
The LASER:CALPD command sets the laser photodiode feedback responsivity (the CAL PD
parameter).
An <nrf value>, in microamps/milliwatt (µA/mW).
The module calculates optical power by dividing the monitor feedback current by its CalPD value.
Photodiode (PD) responsivity is frequently provided by manufacturers of packaged lasers with built-
LASER:MDP? LASER:SYNCLDV?
LASER:MODE? LASER:SYNCMDI?
LASER:MODulation LASER:SYNCMDP?
LASER:MODulation? LASER:STEP
LASER:OUTput LASER:STEP?
LASER:OUTput? LASER:TOL
LASER:SYNCLDI? LASER:TOL?