RUN-n
Start Single Channel Acquisition
Syntax:
RUN-n
Parameters:
None
Function:
This command initiates data acquisition on the specified channel using the
currently defined acquisition mode. In single type acquisition modes this
command will cause one reading to be acquired. In continuous type acquisi-
tion modes this command will initiate the continuous acquisition
of
readings.
The STOP command will terminate acquisition.
Related Commands: STOP, STOP-n, RUN
RWS?
Read
Both
Channel Measurements With Status Query
Syntax:
RWS?
Parameters:
None
Function:
This query returns the last measurements taken from both channels. The
units
of
these measurements are the units defined at the time the readings
were made. Because it
is
possible to make this query faster than measure-
ments are actually being taken, the values returned by successive queries may
be multiple reports
of
the same measurement.
To ensure that fresh data is being read the NDA(new data available) bit in the
Status Byte can be checked either by issuing a serial poll or by using the
*STB? command. A serial poll
is
recommended
if
the GPlB interface
is
being
used. The NDA bit will be
1
if
the last measurement has not been read. The
NDA bit for a specific channel will be reset to
0
immediately after a measure
ment
is
queried from that channel and will stay
0
until a new reading is taken.
Returns: <status>, <number>
<status> is an integer that represents the status of the returned value.
<status> will be
0
for ok,
1
for over range,
2
for saturated and
3
for data error,
and
4
for ranging.
If
more than one channel
is
available, then the first two numbers represent the
status
of
CHA and CHB respectively.
<number>
is
a floating point number in the exponential format.
Related Commands: *STB?, MODE-n, MODE-n?, R?, R-n?, RWS-n?
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