Keithley 2520, User Manual, Page: 204 / 329

Model 2520 User’s Manual SCPI Command Reference 14-15
Select laser diode math function
FORMat <name>
:CALCulate[1]:FORMat <name> Select laser diode math function
Parameters
<name> = MXB[1] MX + B
CONDuctance[1] I1/V1
POWER[1]
V1
×
I1
RESistance[1] V1/I1
Query
:FORMat? Query selected math function
Description
This command selects the laser diode math function. The laser diode
current source value (I1) and measured voltage (V1) are used to calcu-
late CONDuctance1, POWER1, and RESistance1, while MX + B
parameters are programmed separately (see below).
Set MX + B parameters
MBFactor <n>
:CALCulate[1]:KMATh:MBFactor <n> Set laser diode B (offset) value
:CALCulate2:KMATh:MBFactor <n> Set detector #1 B (offset) value
:CALCulate3:KMATh:MBFactor <n> Set detector #2 B (offset) value
Parameters
<n> = -9.99999e20 to Specify B (offset) value for MX + B
+9.99999e20
MINimum
-9.99999e20
MAXimum +9.99999e20
DEFault 0
Query
:MBFactor? Query B (offset) value for MX + B
Description
These commands program the B (offset) value for the MX + B math
function. Use CALC1 for the laser diode, CALC2 for detector #1, and
CALC3 for detector #2.
MMFactor <n>
:CALCulate[1]:KMATh:MMFactor <n> Select laser diode M (slope) value
:CALCulate2:KMATh:MMFactor <n> Select detector #1 M (slope) value
:CALCulate3:KMATh:MMFactor <n> Select detector #2 M (slope) value
Parameters
<n> = -9.99999e20 to Specify M (slope) value for MX + B
+9.99999e20
MINimum
-9.99999e20
MAXimum +9.99999e20
DEFault 1