Table 4-2 Laser Diode Test Commands - Keithley 2520 User Manual

4-6 Laser Diode Testing
Table 4-2
Laser diode test commands
Command
:CALCulate[1]:FORMat <format>
:CALCulate[1]:DATA?
:CALCulate[1]:STATe <state>
:CALCulate[1]:KMATh:MBFactor <B>
:CALCulate[1]:KMATh:MMFactor <M>
:CALCulate[1]:KMATh:MUNits "<units>"
:CALCulate2:DATA?
:CALCulate2:STATe <state>
:CALCulate2:KMATh:MBFactor <B>
:CALCulate2:KMATh:MMFactor <M>
:CALCulate2:KMATh:MUNits "<units>"
:CALCulate3:DATA?
:CALCulate3:STATe <state>
:CALCulate3:KMATh:MBFactor <B>
:CALCulate3:KMATh:MMFactor <M>
:CALCulate3:KMATh:MUNits "<units>"
:CALCulate4:DATA?
:CALCulate4:STATe <state>
:FORMat:ELEMents <elements>
:FORMat:ELEMents:CALCulate <elements>
:INIT
:OUTPut[1] <state>
:READ?
:SENSe[1]:VOLTage:RANGe <range>
:SENSe[1]:VOLTage:POLarity <polarity>
:SENSe2:CURRent:RANGe <range>
:SENSe2:CURRent:POLarity <polarity>
:SENSe3:CURRent:RANGe <range>
:SENSe3:CURRent:POLarity <polarity>
1
COND = I /V ; RES = V
L L
2
CURR1 = I ; VOLT1 = V
L
3
5.0A maximum pulse mode only. 1A maximum in DC mode.
4
Settings affected by maximum duty cycle. See
/I ; POWER = V * I .
L L L L
; CURR2 = I ; VOLT2 = V
L PD1
Section
Define laser diode math format (MXB[1],
CONDuctance[1]), POWER[1], or RESistance[1]).
Request laser diode math reading.
Enable/disable laser diode math (ON or OFF).
Set laser diode MX + B, B (offset) parameter.
Set laser diode MX + B, M (slope) parameter.
Define laser diode MX + B units (1-character ASCII
string).
Request detector #1 math reading.
Enable/disable detector #1 math (ON or OFF).
Set detector #1 MX + B, B (offset) parameter.
Set detector #1 MX + B, M (slope) parameter.
Define detector 1 MX + B units (1-character ASCII string).
Request detector #2 math reading.
Enable/disable detector #2 math (ON or OFF).
Set detector #2 MX + B, B (offset) parameter.
Set detector #2 MX + B, M (slope) parameter.
Define detector 2 MX + B units (1-character ASCII string).
Request delta (detector #1 - detector #2 current reading).
Enable/disable delta measurement (ON or OFF).
Select :READ? data elements (CURRent[1], VOLTage[1],
CURRent2, VOLTage2, CURRent3, VOLTage3, STATus,
2
or TIME).
Select CALC data elements (CALCulate, STATus, or
TIME).
Trigger readings.
Turn all sources ON or OFF.
Trigger and acquire readings.
Set laser diode voltage measure range (5 or 10).
Set laser diode measure polarity (POSitive or NEGative).
Set detector #1 measure range (0.01, 0.02, 0.05, 0.1).
Set detector #1 measure polarity.
Set detector #2 measure range (0.01, 0.02, 0.05, 0.1).
Set detector #2 measure polarity.
; CURR3 = I ; VOLT3 = V
B2 PD3
5.
Model 2520 User's Manual
Description
.
B2
1