Select Laser Diode Math Function - Keithley 2520 User Manual

Model 2520 User's Manual

Select laser diode math function

FORMat <name>
:CALCulate[1]:FORMat <name>
Parameters
Query
Description
Set MX + B parameters
MBFactor <n>
:CALCulate[1]:KMATh:MBFactor <n>
:CALCulate2:KMATh:MBFactor <n>
:CALCulate3:KMATh:MBFactor <n>
Parameters
Query
Description
MMFactor <n>
:CALCulate[1]:KMATh:MMFactor <n>
:CALCulate2:KMATh:MMFactor <n>
:CALCulate3:KMATh:MMFactor <n>
Parameters
<name> = MXB[1]
CONDuctance[1] I1/V1
POWER[1]
RESistance[1]
:FORMat?
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).
<n> = -9.99999e20 to
+9.99999e20
MINimum
MAXimum
DEFault
:MBFactor?
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.
<n> = -9.99999e20 to
+9.99999e20
MINimum
MAXimum
DEFault
SCPI Command Reference
Select laser diode math function
MX + B
V1 × I1
V1/I1
Query selected math function
Set laser diode B (offset) value
Set detector #1 B (offset) value
Set detector #2 B (offset) value
Specify B (offset) value for MX + B
-9.99999e20
+9.99999e20
0
Query B (offset) value for MX + B
Select laser diode M (slope) value
Select detector #1 M (slope) value
Select detector #2 M (slope) value
Specify M (slope) value for MX + B
-9.99999e20
+9.99999e20
1
14-15