IEEE-488 Reference
4-187
Effects of positive transitions on the Sequence Event Register:
Positive transition effect on
Sequence event Sequence Event Register
Layer 1 Sets B1 when in arm layer 1.
Layer 2 Sets B2 when in arm layer 2.
Programming example 10 OUTPUT 716; “:stat:oper:ptr 1026; ptr?”
20 ENTER 716; A$
30 PRINT A$
40 END
Line 10 Sets Bits B1 and B10 of the PTR Operation Transition Filter, and then queries the
register.
Line 20 Addresses the Model 2001 to talk.
Line 30 Displays the decimal value that defines which bits in the register are set (1026).
igure 4-39
Sequence Transition Filter
Lay2
B15 - B3 B2 B1 B0
(2 )
2
4
(2 )
1
2
0/1 0/1
Bit Position
Event
Decimal Weighting
Value
Value : 1 = Enable Positive Transition
0 = Disable Positive Transition
Lay1
A) Positive Transition (PTR) Register
Lay2
B15 - B3 B2 B1 B0
(2 )
2
4
(2 )
1
2
0/1 0/1
Bit Position
Event
Decimal Weighting
Value
Value : 1 = Enable Negative Transition
0 = Disable Negative Transition
Lay1
B) Negative Transition (NTR) Register
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