Installation guide

Programming examples90

PicoErrorHandler.vi - takes an error cluster and, if an error has occurred,

displays a message box indicating the source of the error and the status code

returned by the driver

PicoScope4000aAdvancedTriggerSettings.vi - an interface for the

advanced trigger features of the oscilloscope

This VI is not required for setting up simple triggers, which are configured using

PicoScope4000aSettings.vi.

For further information on these trigger settings, see descriptions of the trigger

functions:

ps4000aSetTriggerChannelConditions

ps4000aSetTriggerChannelDirections

ps4000aSetTriggerChannelProperties

ps4000aSetPulseWidthQualifierConditions

ps4000aSetPulseWidthQualifierProperties

ps4000aSetTriggerDelay

PicoScope4000aAWG.vi - controls the arbitrary waveform generator

Standard waveforms or an arbitrary waveform can be selected under ‘Wave Type’.

There are three settings clusters: general settings that apply to both arbitrary and

standard waveforms, settings that apply only to standard waveforms and settings

that apply only to arbitrary waveforms. It is not necessary to connect all of these

clusters if only using arbitrary waveforms or only using standard waveforms.

When selecting an arbitrary waveform, it is necessary to specify a text file

containing the waveform. This text file should have a single value on each line in

the range –1 to 1. For further information on the settings, see descriptions of

ps4000aSetSigGenBuiltIn and ps4000aSetSigGenArbitrary.

PicoScope4000aClose.vi - closes the oscilloscope

Should be called before exiting an application.

PicoScope4000aGetBlock.vi - collects a block of data from the oscilloscope

This can be called in a loop in order to continually collect blocks of data. The

oscilloscope should first be set up by using PicoScope4000aSettings.vi. The VI

outputs data arrays in two clusters (max and min). If not using aggregation, ‘Min

Buffers’ is not used.

PicoScope4000aGetRapidBlock.vi - collects a set of data blocks or captures

from the oscilloscope in rapid block mode

This VI is similar to PicoScope4000aGetBlock.vi. It outputs two-dimensional

arrays for each channel that contain data from all the requested number of

captures.