PicoScope 3000A Series Prog rammer's Guide 65
Copyright © 2011-2013 Pico Technology Limited. All rights reserved. ps3000abpg.en r9
2.12.38
ps3000aRunStreaming
PICO_STATUS ps3000aRunStreaming
(
short handle,
unsigned long * sampleInterval,
PS3000A_TIME_UNITS sampleIntervalTimeUnits,
unsigned long maxPreTriggerSamples,
unsigned long maxPostTriggerSamples,
short autoStop,
unsigned long downSampleRatio,
PS3000A_RATIO_MODE downSampleRatioMode,
unsigned long overviewBufferSize
)
This function tells the oscilloscope to start collecting data in streaming mode. When
data has been collected from the device it is downsampled if necessary and then
delivered to the application. Call ps3000aGetStreamingLatestValues to retrieve the
data. See Using streaming mode for a step-by-step guide to this process.
When a trigger is set, the total number of samples stored in the driver is the sum of
maxPreTriggerSamples and maxPostTriggerSamples. If autoStop is false
then this will become the maximum number of samples without downsampling.
handle, the handle of the required device.
* sampleInterval, on entry, the requested time interval
between samples; on exit, the actual time interval used.
sampleIntervalTimeUnits, the unit of time used for
sampleInterval. Use one of these values:
PS3000A_FS
PS3000A_PS
PS3000A_NS
PS3000A_US
PS3000A_MS
PS3000A_S
maxPreTriggerSamples, the maximum number of raw samples
before a trigger event for each enabled channel. If no trigger
condition is set this argument is ignored.
maxPostTriggerSamples, the maximum number of raw samples
after a trigger event for each enabled channel. If no trigger condition
is set, this argument states the maximum number of samples to be
stored.
autoStop, a flag that specifies if the streaming should stop when
all of maxSamples have been captured.
downSampleRatio: see ps3000aGetValues
downSampleRatioMode: see ps3000aGetValues
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