xi
3
IEEE-488 Reference
Figure 3-1
IEEE-488 connector ...................................................................................................................................
3-2
Figure 3-2
IEEE-488 connections ................................................................................................................................
3-2
Figure 3-3
IEEE-488 connector location .....................................................................................................................
3-2
Figure 3-4
RS-232 interface connector ........................................................................................................................
3-3
Figure 3-5
Model 6517A status register structure .......................................................................................................
3-8
Figure 3-6
Standard event status ..................................................................................................................................
3-9
Figure 3-7
Operation event status ................................................................................................................................
3-9
Figure 3-8
Arm event status .......................................................................................................................................
3-10
Figure 3-9
Sequence event status ...............................................................................................................................
3-11
Figure 3-10
Trigger event status ..................................................................................................................................
3-12
Figure 3-11
Measurement event status ........................................................................................................................
3-13
Figure 3-12
Questionable event status .........................................................................................................................
3-14
Figure 3-13
Status byte and service request (SRQ) .....................................................................................................
3-16
Figure 3-14
Trigger Model (IEEE-488 bus operation) ................................................................................................
3-19
Figure 3-15
Standard Event Enable Register ...............................................................................................................
3-29
Figure 3-16
Standard Event Status Register ................................................................................................................
3-29
Figure 3-17
Service Request Enable Register .............................................................................................................
3-34
Figure 3-18
Status Byte Register .................................................................................................................................
3-35
Figure 3-19
ASCII data format ....................................................................................................................................
3-76
Figure 3-20
IEEE754 single precision data format (32 data bits) ...............................................................................
3-76
Figure 3-21
IEEE754 double precision data format (64 data bits) ..............................................................................
3-77
Figure 3-22
Measurement Event Register .................................................................................................................
3-110
Figure 3-23
Questionable Event Register ..................................................................................................................
3-111
Figure 3-24
Operation Event Register .......................................................................................................................
3-112
Figure 3-25
Trigger Event Register ...........................................................................................................................
3-113
Figure 3-26
Arm Event Register ................................................................................................................................
3-113
Figure 3-27
Sequence Event Register ........................................................................................................................
3-114
Figure 3-28
Measurement Event Enable Register .....................................................................................................
3-115
Figure 3-29
Questionable Event Enable Register ......................................................................................................
3-115
Figure 3-30
Operation Event Enable Register ...........................................................................................................
3-116
Figure 3-31
Trigger Event Enable Register ...............................................................................................................
3-116
Figure 3-32
Arm Event Enable Register ....................................................................................................................
3-116
Figure 3-33
Sequence Event Enable Register ............................................................................................................
3-117
Figure 3-34
Measurement Transition Filter ...............................................................................................................
3-118
Figure 3-35
Questionable Transition Filter ...............................................................................................................
3-119
Figure 3-36
Operation Transition Filter .....................................................................................................................
3-120
Figure 3-37
Trigger Transition Filter .........................................................................................................................
3-121
Figure 3-38
Arm Transition Filter .............................................................................................................................
3-122
Figure 3-39
Sequence Transition Filter .....................................................................................................................
3-123
Figure 3-40
Key-press codes .....................................................................................................................................
3-131
D
IEEE-488 Bus Overview
Figure D-1
IEEE-488 bus configuration ......................................................................................................................
D-2
Figure D-2
IEEE-488 handshake sequence .................................................................................................................
D-3
Figure D-3
Command codes ........................................................................................................................................
D-6