Keithley 6517A User Manual

IEEE-488 Reference
3-110
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 buff-
er is no longer full (NTR).
Bit B10, Sequence Reading Available (SRA) — Set bit indicates that a fresh reading from the
Alternating Polarity Test Sequence is available and has been placed in the buffer (PTR).
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).
Bit B12, Out of Limits (OL) — Set bit indicates that signal transients (i.e. noise spikes) exceed
the range limit (PTR). See paragraph 2.3.2 (Range Messages) for more information.
Bit B13, Fixture Lid Closed — Set bit indicates that a fixture using the interlock cable is closed.
If no interlock cable is connected to the 6517A, bit is also set. If the interlock cable is connected
to the 6517A but not to the fixture, bit is not set (PTR).
Bit B14 (VSC) — Set bit indicates that the V-source is in compliance (PTR).
Bit B15 — Always zero.
Figure 3-22
Measurement Event Register
RAV
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 = Measurement Event Set
0 = Measurement Event Cleared
LL1
2
0/1
Events : VSC = V-Source Compliance
FLC = Fixture Lid Closed
OL = Out of Limits
BPT = Buffer Pretriggered
SRA = Sequence Reading Available
BFL = Buffer Full
BHF = Buffer Half Full
BAV = Buffer Available
RUF = Reading Underflow
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
B14 B13 B12
0/1
4096
0/1
B15
(2 )
12
VSC OL RUF
16384
(2 )
14
(2 )
6
256
0/1
0
SRA
(2 )
10
1024
0/1
FLC
8192
(2 )
13
0/1

Keithley 6517A Specifications

General

Brand	Keithley
Model	6517A
Category	Measuring Instruments
Language	English