Keithley 2450 Reference Manual page 7

Table of Contents
Test fixtures ............................................................................................................................. 2-81
Output-off state ....................................................................................................................... 2-82
Source-measure overview ................................................................................................. 2-85
Source and measure through the front panel .......................................................................... 2-85
Source and measure using SCPI commands.......................................................................... 2-96
Source and measure using TSP commands ........................................................................... 2-97
Protection ........................................................................................................................... 2-98
Overvoltage protection ............................................................................................................ 2-98
Source limits .......................................................................................................................... 2-100
Ranges ............................................................................................................................. 2-101
Source range ......................................................................................................................... 2-101
Measurement range .............................................................................................................. 2-104
Automatic reference measurements ................................................................................ 2-108
Setting autozero .................................................................................................................... 2-109
Source readback .............................................................................................................. 2-110
Setting source readback ....................................................................................................... 2-110
Source delay .................................................................................................................... 2-111
Setting the source delay ........................................................................................................ 2-112
Saving setups ................................................................................................................... 2-112
Save a user setup to internal memory ................................................................................... 2-113
Save a user setup to a USB flash drive ................................................................................. 2-113
Copy a user setup ................................................................................................................. 2-114
Delete a user setup ............................................................................................................... 2-114
Recall a user setup ............................................................................................................... 2-115
Define the setup used for power-on ...................................................................................... 2-115
Reset the instrument ........................................................................................................ 2-116
Using the event log .......................................................................................................... 2-117
Information provided for each event log entry ....................................................................... 2-117
Event log settings .................................................................................................................. 2-117
Effects of errors on scripts..................................................................................................... 2-118
Functions and features ............................................................................................ 3-1
Relative offset ...................................................................................................................... 3-1
Establishing a relative offset value ............................................................................................ 3-1
Disabling the relative offset ....................................................................................................... 3-3
Instrument access ................................................................................................................ 3-4
Changing the instrument access mode ..................................................................................... 3-4
Changing the password ............................................................................................................ 3-5
Switching control interfaces....................................................................................................... 3-5
Calculations that you can apply to measurements .............................................................. 3-6
mX+b ......................................................................................................................................... 3-6
Percent ...................................................................................................................................... 3-6
Reciprocal (1/X) ........................................................................................................................ 3-7
Setting percent math operations ............................................................................................... 3-7
Setting mx+b math operations .................................................................................................. 3-8
Setting reciprocal math operations ............................................................................................ 3-8
Switching math on the SETTINGS screen ................................................................................ 3-9
Displayed measurements .......................................................................................................... 3-9
Reading buffers .................................................................................................................. 3-10
Getting started with buffers ..................................................................................................... 3-10
Remote buffer operation ......................................................................................................... 3-27
Model 2450 Interactive SourceMeter® Instrument Reference Manual