Questionable Data/Signal
Status Group
This group reports when the output data
from the counter may not be trusted.
Bit 14 (weight 16384) — Unexpected
Parameter (UEP)
This bit shows that the counter has re-
ceived a parameter that it cannot execute,
although the parameter is valid according
to SCPI. This means that when this bit is
true, the instrument has not performed a
measurement exactly as requested.
Bit 10 (weight 1024) — Timeout for
Measurement (TIO)
The counter sets this bit true when it
abandons the measurement because the
internal timeout has elapsed, or no signal
has been detected.
See also :SYST:TOUT and
:SYST:SDET.
Bit 8 (weight 256) Overflow (OFL)
The counter sets this bit true when it can
-
not complete the measurement due to
overflow.
n
Summary, Questionable
Data/Signal Status Reporting
:STAT:QUES:ENAB <bit mask>
Enable reporting of Questionable
data/signal status in the status byte.
*SRE 8
Enable SRQ when data/signal is ques-
tionable.
:STAT:QUES?
Reading and clearing the event register of
the Questionable data/signal Register
structure.
:STAT:QUES:COND?
Reading the condition register of Ques
-
tionable data/signal Register structure.
6-20 Status Subsystem
Using the Subsystems
OFLUEP
Questionable Data/Signal Status
Group
TIO
15 8
0
14
10
STAT : QUESt : COND?
STAT: QUES?
256
Unexpected
parameter
Time out for measurement
Overflow
16384 1024
Figure 6-8 Bits in Questionable data
register.
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