IEEE-488 Reference
3-119
Effects of positive transitions on the Questionable Event Register:
Positive transition effect on
Questionable event Questionable Event Register
Volts Summary Sets B0 when an invalid volts measurement occurs.
Amps Summary Sets B1 when an invalid amps measurement occurs.
Temperature Summary Sets B4 when an invalid external temperature reading occurs.
Humidity Summary Sets B9 when an invalid relative humidity reading occurs.
Ohms Summary Sets B10 when an invalid ohms measurement occurs.
Coulombs Summary Sets B11 when an invalid coulombs measurement occurs.
Sequence Test Summary Sets B12 when a sequence test is aborted.
Figure 3-35
Questionable Transition Filter
RAV
B10 B9 B8 B7 B6 B5 B4 B3 B2 B1 B0
(2 )
9
(2 )
8
(2 )
7
(2 )
5
(2 )
4
(2 )
1
(2 )
0
32
0/1
Bit Position
Event
Decimal Weighting
Value
Value : 1 = Enable Positive Transition
0 = Disable Positive Transition
Amp
2
0/1
Events : Warn = Command Warning Cal = Calibration Summary
Seq = Sequence Test Summary Temp = Temperature
Coul = Coulombs Amp = Amps Summary
Hum = Humidity Summary Volt = Volts Summary
Hum Temp Volt
512 16 1
0/1 0/1 0/1
Cal BAV
256 128
0/1 0/1
Coul
B11
(2 )
11
2048
0/1
B14 B13 B12
0/1
4096
0/1
B15
(2 )
12
Warn Seq RUF
16384
(2 )
14
(2 )
6
256
0/1
RAV
B10 B9 B8 B7 B6 B5 B4 B3 B2 B1 B0
(2 )
9
(2 )
8
(2 )
7
(2 )
5
(2 )
4
(2 )
1
(2 )
0
32
0/1
Bit Position
Event
Decimal Weighting
Value
Value : 1 = Enable Negative Transition
0 = Disable Negative Transition
Amp
2
0/1
Events : Warn = Command Warning Cal = Calibration Summary
Seq = Sequence Test Summary Temp = Temperature Summary
Coul = Coulombs Summary Amp = Amps Summary
Hum = Humidity Summary Volt = Volts Summary
Hum Temp Volt
512 16 1
0/1 0/1 0/1
Cal BAV
256 128
0/1 0/1
Coul
B11
(2 )
11
2048
0/1
B14 B13 B12
0/1
4096
0/1
B15
(2 )
12
Warn Seq RUF
16384
(2 )
14
(2 )
6
256
0/1
A) Positive Transition (PTR) Filter
B) Negative Transition (NTR) Filter
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