Keithley 2002

IEEE-488 Reference
3-128
Effects of positive transitions on the Operation Event Register:
Positive transition effect on
Operation event Operation Event Register
Calibrating Sets B0 at the start of calibration.
Measuring Sets B4 at the start of a measurement.
Trigger layer Sets B5 when waiting in the Trigger Layer.
Arm layer Sets B6 when waiting in an arm layer.
Idle Sets B10 when entering the idle state.
.
Figure 3-35
Operation Transition Filter
Idle Arm Trig
B15 - B11 B10 B9 B8 B7 B6 B5 B4 B3 B2 B1 B0
(2 )
10
1024
(2 )
6
(2 )
5
(2 )
1
(2 )
0
64 32
0/1 0/1 0/1
Bit Position
Event
Decimal Weighting
Value
Value : 1 = Enable Positive Transition
0 = Disable Positive Transition
A) Positive Transition (PTR) Register
Idle Arm Trig
B15 - B11 B10 B9 B8 B7 B6 B5 B4 B3 B2 B1 B0
(2 )
10
1024
(2 )
6
(2 )
5
(2 )
1
(2 )
0
64 32
0/1 0/1 0/1
Bit Position
Event
Decimal Weighting
Value
Value : 1 = Enable Negative Transition
0 = Disable Negative Transition
B) Negative Transition (NTR) Register
Set
2
0/1
Set
2
0/1
Cal
1
0/1
Cal
1
0/1