Keithley 4200A-SCS - Page 17

Table of Contents
Model 4200A-SCS Parameter Analyzer
Reference Manual
Maintenance .............................................................................................................. 12-1
Introduction ........................................................................................................................ 12-1
Line fuses ........................................................................................................................... 12-1
Front-panel display ............................................................................................................. 12-2
Cleaning the front-panel display .............................................................................................. 12-2
Adjusting the display ............................................................................................................... 12-2
Air intake ventilation screens ............................................................................................. 12-2
Solid-state hard drive maintenance ................................................................................... 12-3
Repacking for shipment ..................................................................................................... 12-3
Updates to the operating system software ......................................................................... 12-3
Firmware upgrade .............................................................................................................. 12-4
Accessing the release notes .............................................................................................. 12-4
Reset the hardware ............................................................................................................ 12-4
Lithium battery .................................................................................................................... 12-4
Calibrate the system .......................................................................................................... 12-5
Fan operation ..................................................................................................................... 12-7
Making stable measurements with SMUs .......................................................................... 12-8
Single SMU stability considerations ........................................................................................ 12-8
Multiple SMU stability considerations ...................................................................................... 12-9
Eliminating oscillations .......................................................................................................... 12-10
Low-current measurements ............................................................................................. 12-11
Leakage currents .................................................................................................................. 12-11
Generated currents ............................................................................................................... 12-12
Voltage burden ...................................................................................................................... 12-14
Noise and source impedance ................................................................................................ 12-15
Cable capacitance ................................................................................................................. 12-16
Test system performance ...................................................................................................... 12-16
Interference ...................................................................................................................... 12-17
Electrostatic interference ....................................................................................................... 12-17
Radio frequency interference ................................................................................................ 12-17
Ground loops and other SMU grounding considerations ....................................................... 12-18
LPT library function reference ................................................................................. 13-1
LPT library reference .......................................................................................................... 13-1
Lists of LPT library commands ........................................................................................... 13-2
General operation commands ................................................................................................. 13-2
Math operation commands ...................................................................................................... 13-4
SMU commands ...................................................................................................................... 13-4
PGU (pulse only) and PMU (pulse and measure) commands ................................................. 13-5
Pulse source only (PG2) commands ....................................................................................... 13-6
CVU commands ...................................................................................................................... 13-7
Switch commands ................................................................................................................... 13-8
LPT commands for general operations .............................................................................. 13-9
clrscn ....................................................................................................................................... 13-9
clrtrg ...................................................................................................................................... 13-11