Keithley 2651A Reference Manual page 7

Model 2651A High Power System SourceMeter® Instrument Reference Manual
Timers ..................................................................................................................................... 3-43
Event blenders ........................................................................................................................ 3-49
LAN triggering overview .......................................................................................................... 3-50
Command interface triggering ................................................................................................. 3-52
Manual triggering .................................................................................................................... 3-52
Interactive triggering ................................................................................................................ 3-52
Hardware trigger modes .......................................................................................................... 3-56
Understanding synchronous triggering modes ........................................................................ 3-60
High-capacitance mode ..................................................................................................... 3-65
Overview ................................................................................................................................. 3-65
Understanding high-capacitance mode ................................................................................... 3-65
Enabling high-capacitance mode ............................................................................................ 3-68
Display operations .............................................................................................................. 3-70
Display functions and attributes .............................................................................................. 3-70
Display features ...................................................................................................................... 3-71
Display messages ................................................................................................................... 3-72
Input prompting ....................................................................................................................... 3-76
Indicators................................................................................................................................. 3-78
Local lockout ........................................................................................................................... 3-79
Load test menu ....................................................................................................................... 3-79
Key-press codes ..................................................................................................................... 3-81
Digital I/O ........................................................................................................................... 3-83
Digital I/O port ......................................................................................................................... 3-83
Using output enable ................................................................................................................ 3-88
TSP-Link synchronization lines ............................................................................................... 3-89
Theory of operation .................................................................................................... 4-1
Analog to digital converter ................................................................................................... 4-1
Source-measure concepts ................................................................................................... 4-2
Overview ................................................................................................................................... 4-2
Compliance principles ............................................................................................................... 4-2
Overheating protection .............................................................................................................. 4-3
Operating boundaries ................................................................................................................ 4-5
Basic circuit configurations ...................................................................................................... 4-14
Guard ...................................................................................................................................... 4-17
Cable considerations ............................................................................................................... 4-20
Reduction in gain-bandwidth .............................................................................................. 4-20
Pulse rise times .................................................................................................................. 4-21
Cable specifications and connection configuration .................................................................. 4-22
Range and pulse setting ......................................................................................................... 4-22
Load and operating mode ....................................................................................................... 4-22
Pulse width ......................................................................................................................... 4-23
Remote commands ..................................................................................................... 5-1
Introduction to remote operation .......................................................................................... 5-1
Controlling the instrument by sending individual command messages ..................................... 5-1
Queries ..................................................................................................................................... 5-3
Information on scripting and programming ................................................................................ 5-3
About remote commands ..................................................................................................... 5-3
Beeper control ........................................................................................................................... 5-3
Bit manipulation and logical operations ..................................................................................... 5-4
2651A-901-01 Rev. A / March 2011
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