IEEE-488 Reference
3-117
3.21.3
:PTRansition <NRf>
:STATus:MEASurement:PTRansition <NRf>
Program Measurement Transition Filter (PTR)
:STATus:QUEStionable:PTRansition <NRf>
Program Questionable Transition Filter (PTR)
:STATus:OPERation:PTRansition <NRf>
Program Operation Transition Filter (PTR)
:STATus:OPERation:TRIGger:PTRansition <NRf>
Program Trigger Transition Filter (PTR)
:STATus:OPERation:ARM:PTRansition <NRf>
Program Arm Transition Filter (PTR)
:STATus:OPERation:ARM:SEQuence:PTRansition <NRf>
Program Sequence Transition Filter (PTR)
Parameters
<NRf> = 0
Clear register
<NRf> = 128
Set bit B7
1
Set bit B0
256
Set bit B8
2
Set bit B1
512
Set bit B9
4 Set bit B2
1024
Set bit B10
8
Set bit B3
2048
Set bit B11
16 Set bit B4
4096
Set bit B12
32 Set bit B5
8192
Set bit B13
64 Set bit B6
16384
Set bit B14
65535
Set all bits
Query
:PTRansition?
Query PTR register
These commands are used to program the positive transition (PTR) registers. A positive transition
is defined as a 0 to 1 state change in the condition register. Thus, when an event is programmed
for a positive transition, the appropriate bit in the corresponding event register sets when the cor-
responding bit in the condition register changes from 0 to 1. For example, if bit B9 of the Positive
Transition Register of the Measurement Transition Filter is set, then the buffer full event is pro-
grammed for a positive transition. The BFL bit (B9) in the Measurement Event Register sets
when the trace buffer becomes full. For details on register structure, see paragraph 3.8.
The PTR registers are shown in Figures 3-34A through 3-39A. Included is the decimal weight
of each bit. The sum of the decimal weights of the bits that you wish to set is the parameter
(<NRf>) that is sent with the command. For example, to program RAV (B5) and BFL (B9) mea-
surement events for positive transitions, send the following command:
:stat:meas:ptr 544
where; BFL (bit B9) = Decimal
512
RAV (bit B5) = Decimal
32
<NRf> =
544
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 Sequence Event
0 = Disable (Mask) Sequence Event
Events : Lay1 = Layer 1
Lay2 = Layer 2
Lay1
Figure 3-33
Sequence Event Enable Register
