Keithley 2461

Table of Content
s Model 2461 Interactive SourceMeter® Instrument
Reference Manual
Instrument access .............................................................................................................. 3-77
Changing the instrument access mode ................................................................................... 3-77
Changing the password .......................................................................................................... 3-78
Switching control interfaces..................................................................................................... 3-79
Relative offset .................................................................................................................... 3-79
Establishing a relative offset value .......................................................................................... 3-80
Disabling the relative offset ..................................................................................................... 3-81
Calculations that you can apply to measurements ............................................................ 3-82
mx+b ....................................................................................................................................... 3-82
Percent .................................................................................................................................... 3-83
Reciprocal (1/X) ...................................................................................................................... 3-83
Setting percent math operations ............................................................................................. 3-84
Setting mx+b math operations ................................................................................................ 3-84
Setting reciprocal math operations .......................................................................................... 3-85
Switching math on the SETTINGS swipe screen .................................................................... 3-85
Displayed measurements ........................................................................................................ 3-85
Digital I/O ........................................................................................................................... 3-86
Digital I/O connector and pinouts ............................................................................................ 3-86
Digital I/O port configuration .................................................................................................... 3-87
Digital I/O lines ........................................................................................................................ 3-89
Remote digital I/O commands ................................................................................................. 3-94
Digital I/O bit weighting ........................................................................................................... 3-95
Digital I/O programming examples .......................................................................................... 3-95
Measurement methods ...................................................................................................... 3-98
Continuous measurement triggering ....................................................................................... 3-98
Trigger key triggering .............................................................................................................. 3-98
Trigger model triggering .......................................................................................................... 3-98
Switching between measurement methods ............................................................................. 3-99
Triggering ........................................................................................................................... 3-99
Command interface triggering ................................................................................................. 3-99
Triggering using hardware lines ............................................................................................ 3-100
LAN triggering overview ........................................................................................................ 3-100
Trigger timers ........................................................................................................................ 3-101
Event blenders ...................................................................................................................... 3-104
Interactive triggering .............................................................................................................. 3-105
Trigger model ................................................................................................................... 3-107
Trigger model blocks ............................................................................................................. 3-108
Predefined trigger models ..................................................................................................... 3-125
Assembling trigger model blocks ........................................................................................... 3-127
Running the trigger model ..................................................................................................... 3-128
Using trigger events to start actions in the trigger model ...................................................... 3-131
Limit testing and binning .................................................................................................. 3-134
Limit testing using the front-panel interface ........................................................................... 3-134
Set up a limit test using the remote interface ........................................................................ 3-136
TSP-Link System Expansion Interface ............................................................................ 3-150
TSP-Link connections ........................................................................................................... 3-150
TSP-Link nodes ..................................................................................................................... 3-152
Master and subordinates ....................................................................................................... 3-153
Initializing the TSP-Link system ............................................................................................ 3-153
Sending commands to TSP-Link nodes ................................................................................ 3-154
Using the reset() command ................................................................................................... 3-154
Terminating scripts on the TSP-Link system ......................................................................... 3-155
Triggering using TSP-Link synchronization lines................................................................... 3-155
Running simultaneous test scripts ......................................................................................... 3-155
Using Model 2461 TSP-Link commands with other TSP-Link products ................................ 3-161