IEEE-488 Reference
3-126
where; BFL (bit B9)
=
512
RAV (bit B5)
=
32
<NRf>
=
544
Effects of positive transitions on the Measurement Event Register:
Positive transition effect on
Measurement event
Measurement Event Register
Reading overflow
Sets B0 when reading exceeds range limits.
Low limit 1
Sets B1 when reading is less than the low limit 1 setting.
High limit 1
Sets B2 when reading is greater than the low limit 1 setting.
Low limit 2
Sets B3 when reading is less than the low limit 2 setting.
High limit 2
Sets B4 when reading is greater than the high limit 2 setting.
Reading available
Sets B5 after a reading is taken and processed.
Buffer available
Sets B7 when the trace buffer has at least two readings.
Buffer half full
Sets B8 when the trace buffer becomes half full.
Buffer full
Sets B9 when the trace buffer becomes full.
Buffer pretriggered
Sets B11 when the trace buffer pretrigger event occurs.
Figure 3-33
Measurement Transition Filter
RAV
B15 - B12
B10
B9
B8
B7
B6
B5
B4
B3
B2
B1
B0
(2 )
9
(2 )
8
(2 )
7
(2 )
5
(2 )
4
(2 )
3
(2 )
2
(2 )
1
(2 )
0
32
0/1
Bit Position
Event
Decimal Weighting
Value
Value : 1 = Enable Positive Transition
0 = Disable Positive Transition
LL1
2
0/1
BFL
HL2
HL1
ROF
512
16
4
1
0/1
0/1
0/1
0/1
BHF BAV
LL2
256
128
8
0/1
0/1
0/1
A) Positive Transition (PTR) Register
RAV
B15 - B12
B10
B9
B8
B7
B6
B5
B4
B3
B2
B1
B0
(2 )
9
(2 )
8
(2 )
7
(2 )
5
(2 )
4
(2 )
3
(2 )
2
(2 )
1
(2 )
0
32
0/1
Bit Position
Event
Decimal Weighting
Value
Value : 1 = Enable Negative Transition
0 = Disable Negative Transition
LL1
2
0/1
BFL
HL2
HL1
ROF
512
16
4
1
0/1
0/1
0/1
0/1
BHF BAV
LL2
256
128
8
0/1
0/1
0/1
B) Negative Transition (NTR) Register
BPT
B11
(2 )
11
2048
0/1
BPT
B11
(2 )
11
2048
0/1
Summary of Contents for 2002
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Page 145: ...IEEE 488 Reference 3 22...
Page 167: ...IEEE 488 Reference 3 44...
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