IEEE-488 Reference
4-177
Description These commands are used to set the contents of the event enable registers (see Figures 4-28
through 4-33). An :ENABle command is sent with the decimal equivalent of the binary value
that determines the desired state (0 or 1) of each bit in the appropriate register.
Each event enable register is used as a mask for events (see [:EVENt] for descriptions of events).
When a bit in an event enable register is cleared (0), the corresponding bit in the event register
is masked and thus, cannot set the corresponding summary bit of the next register set in the status
structure. Conversely, when a bit in an event enable register is set (1), the corresponding bit in
the event register is unmasked. When the unmasked bit in the event register sets, the summary
bit of the next register set in the status structure will set.
The decimal weighting of the bits for each event enable register are included in Figures 4-28
through 4-33. The sum of the decimal weights of the bits that you wish to set is sent as the pa-
rameter (<NRf>) for the appropriate :ENABle command. For example, to set the BFL and RAV
bits of the Measurement Event Enable Register, send the following command:
:stat:meas:enab 544
where; BFL (bit B9) = Decimal 512
RAV (bit B5) = Decimal 32
<NRf> = 544
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 Measurement Event
0 = Disable (Mask) Measurement Event
LL1
2
0/1
Events : BPT = Buffer Pretriggered
BFL = Buffer Full
BHF = Buffer Half Full
BAV = Buffer Available
RAV = Reading Available
HL2 = High Limit 2
LL2 = Low Limit 2
HL1 = High Limit 1
LL1 = Low Limit 1
ROF = Reading Overflow
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
BPT
B11
(2 )
11
2048
0/1
igure 4-28
easurement Event Enable Register
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