Keithley 6517A - Page 9

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2.18.4 Deviation ................................................................................................................................................ 2-105
2.18.5 Ratio ....................................................................................................................................................... 2-106
2.18.6 Logarithmic ............................................................................................................................................ 2-106
2.18.7 Selecting and configuring math ............................................................................................................. 2-106
2.18.8 Calculate multiple display ...................................................................................................................... 2-107
2.19 Menu .............................................................................................................................................................. 2-107
2.19.1 SAVESETUP ......................................................................................................................................... 2-110
2.19.2 COMMUNICATION ............................................................................................................................. 2-116
2.19.3 CAL ........................................................................................................................................................ 2-117
2.19.4 TEST ...................................................................................................................................................... 2-118
2.19.5 LIMITS .................................................................................................................................................. 2-118
2.19.6 STATUS-MSG ....................................................................................................................................... 2-120
2.19.7 GENERAL ............................................................................................................................................. 2-120
2.20 Scanning ......................................................................................................................................................... 2-125
2.20.1 Internal scanning .................................................................................................................................... 2-125
2.20.2 External scanning ................................................................................................................................... 2-125
2.21 Other measurement considerations ................................................................................................................ 2-126
2.21.1 Ground loops .......................................................................................................................................... 2-126
2.21.2 Triboelectric effects ............................................................................................................................... 2-127
2.21.3 Piezoelectric and stored charge effects .................................................................................................. 2-127
2.21.4 Electrochemical effects .......................................................................................................................... 2-127
2.21.5 Humidity ................................................................................................................................................ 2-127
2.21.6 Light ....................................................................................................................................................... 2-127
2.21.7 Electrostatic interference ........................................................................................................................ 2-127
2.21.8 Magnetic fields ....................................................................................................................................... 2-128
2.21.9 Electromagnetic interference (EMI) ...................................................................................................... 2-128
2.22 Relative humidity and external temperature readings .................................................................................... 2-128
3 IEEE-488 Reference
3.1 Introduction ........................................................................................................................................................ 3-1
3.2 Connections ........................................................................................................................................................ 3-2
3.2.1 IEEE-488 bus connections ......................................................................................................................... 3-2
3.2.2 RS-232 serial interface connections ........................................................................................................... 3-3
3.3 GPIB primary address selection ......................................................................................................................... 3-3
3.4 GPIB programming language selection ............................................................................................................. 3-4
3.5 QuickBASIC 4.5 programming ......................................................................................................................... 3-4
3.6 General bus commands ...................................................................................................................................... 3-5
3.6.1 REN (remote enable) .................................................................................................................................. 3-5
3.6.2 IFC (interface clear) ................................................................................................................................... 3-5
3.6.3 LLO (local lockout) ................................................................................................................................... 3-6
3.6.4 GTL (go to local) ....................................................................................................................................... 3-6
3.6.5 DCL (device clear) ..................................................................................................................................... 3-6
3.6.6 SDC (selective device clear) ...................................................................................................................... 3-6
3.6.7 GET (group execute trigger) ...................................................................................................................... 3-6
3.6.8 SPE, SPD (serial polling) ........................................................................................................................... 3-6
3.7 Front panel aspects of IEEE-488 operation ....................................................................................................... 3-7
3.7.1 Error and status messages .......................................................................................................................... 3-7
3.7.2 IEEE-488 status indicators ......................................................................................................................... 3-7
3.7.3 LOCAL key ................................................................................................................................................ 3-7
3.8 Status structure ................................................................................................................................................... 3-7
3.8.1 Condition registers ................................................................................................................................... 3-14
3.8.2 Transition filters ....................................................................................................................................... 3-14
3.8.3 Event registers .......................................................................................................................................... 3-15