Keithley 2520 User Manual page 9

4 Laser Diode Testing
Source and measure configuration menus ..................................
Front panel laser diode testing ...................................................
Test circuit configuration ....................................................
Front panel test procedure ...................................................
Step 1: Configure laser diode measurement
Step 2: Configure photodiode detector measurement
Step 3: Configure laser diode current source ...............
Step 4: Configure photodiode detector voltage bias
Step 5: Configure math functions ................................
Step 6: Turn source outputs on and trigger readings ...
Step 7: Observe readings on the display ......................
Step 8: Turn source outputs off ....................................
Remote laser diode testing .........................................................
Laser diode test commands .................................................
Programming example .................................................
5 Source-Measure Concepts
Pulse concepts ............................................................................
Overview .............................................................................
Delay-pulse cycle ................................................................
Delay phase ..................................................................
Pulse phase ...................................................................
Duty cycle ....................................................................
Front panel pulse parameters ..............................................
Fixed mode ..................................................................
Staircase sweep mode ..................................................
Remote pulse parameters ....................................................
Fixed mode ..................................................................
Staircase sweep mode ..................................................
Pulse rise and fall times ......................................................
Sweep waveforms ......................................................................
Staircase sweeps ..................................................................
Custom sweep .....................................................................
Current source operating boundaries .......................................
Limit lines .........................................................................
Loading effects ..................................................................
Data flow ..................................................................................
Basic reading display ........................................................
Math function display .......................................................
Sweep data storage ............................................................
function ..................................................................
functions .................................................................
sources ....................................................................
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