IEEE-488 Reference
3-124
3.21.4
:NTRansition <NRf>
:STATus:MEASurement:NTRansition <NRf>
Program Measurement Transition Filter
(NTR).
:STATus:QUEStionable:NTRansition <NRf>
Program Questionable Transition Filter
(NTR).
:STATus:OPERation:NTRansition <NRf>
Program Operation Transition Filter (NTR).
:STATus:OPERation:TRIGger:NTRansition <NRf>
Program Trigger Transition Filter (NTR).
:STATus:OPERation:ARM:NTRansition <NRf>
Program Arm Transition Filter (NTR).
:STATus:OPERation:ARM:SEQuence:NTRansition <NRf>
Program Sequence Transition Filter (NTR).
Parameters
<NRf> = 0
Clear NTR 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
16384
Set bit B14
64 Set bit B6
65535
Set all bits
Query
:NTRansition? Query NTR register
Description
These commands are used to program the negative transition (NTR) registers. A negative tran-
sition is defined as a 1 to 0 state change in the condition register. Thus, when an event is pro-
grammed for a negative transition, the appropriate bit in the corresponding event register sets
when the corresponding bit in the condition register changes from 1 to 0. For example, if bit B9
of the Negative Transition Register of the Measurement Transition Filter is set, then the buffer
full event is programmed for a negative transition. The BFL bit (B9) in the Measurement Event
Register sets when the trace buffer is no longer full. For details on register structure, see para-
graph 3.8.
The NTR registers are shown in Figures 3-34B through 3-39B. 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 negative transitions, send the following command:
:stat:meas:ntr 544
where; BFL (bit B9) = Decimal
512
RAV (bit B5) = Decimal
32
<NRf> =
544
