Measurement Event Register - Keithley 2002 User Manual

IEEE-488 Reference
3-118
Bit B7, Buffer Available (BAV) — Set bit indicates that there are at least two readings in the
trace buffer (PTR), or the buffer has become empty (NTR).
Bit B8, Buffer Half Full (BHF) — Set bit indicates that the trace buffer is half full (PTR), or
that the buffer is no longer half full (NTR).
Bit B9, Buffer Full (BFL) — Set bit indicates that the trace buffer is full (PTR), or that the
buffer is no longer full (NTR).
Bit B10 — Not used.
Bit B11, Buffer Pretriggered (BPT) — Set bit indicates that the trace buffer pretrigger event
has occurred (PTR), or the operations associated with the pretrigger have been completed
(NTR).
Bits B12 through B15 — Not used.
Bit Position B15 - B12
Event
Decimal Weighting
Value
Value : 1 = Measurement Event Set
Figure 3-21

Measurement Event Register

Questionable Event Register:
Bits B0 through B3 — Not used.
Bit B4, Temperature Summary (Temp) — Set bit indicates that an invalid reference junction
measurement has occurred for thermocouple temperature measurements (PTR), or a subsequent
valid reference junction measurement has occurred (NTR).
Bits B5, B6 and B7 — Not used.
Bit B8, Calibration Summary (Cal) — Set bit indicates that an invalid calibration constant was
detected during the power-up sequence (PTR). The instrument will instead use a default calibra-
tion constant. This error will clear after successful calibration of the instrument.
Bits B9 through B13 — Not used.
B11 B10 B9 B8 B7
BPT BFL BHF BAV
2048
512 256 128
11 9 8 7
(2 ) (2 ) (2 ) (2 )
0/1 0/1 0/1 0/1
0 = Measurement Event Cleared
B6 B5 B4 B3 B2 B1
RAV HL2 LL2 HL1 LL1
32 2
16 8 4
5 4 3 2 1
(2 ) (2 ) (2 ) (2 ) (2 )
0/1 0/1 0/1 0/1 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
B0
ROF
1
0
(2 )
0/1