PICO PicoScope 3000 A Series

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Prog ramming the 3000A Series oscilloscopes92

2.12.53.1 PS3000A_TRIGGER_CONDITIONS structure

A structure of this type is passed to ps3000aSetTriggerChannelConditions in the

conditions argument to specify the trigger conditions, and is defined as follows: -

typedef struct tPS3000ATriggerConditions

{

PS3000A_TRIGGER_STATE channelA;

PS3000A_TRIGGER_STATE channelB;

PS3000A_TRIGGER_STATE channelC;

PS3000A_TRIGGER_STATE channelD;

PS3000A_TRIGGER_STATE external;

PS3000A_TRIGGER_STATE aux;

PS3000A_TRIGGER_STATE pulseWidthQualifier;

} PS3000A_TRIGGER_CONDITIONS

Each structure is the logical AND of the states of the scope's inputs. The

ps3000aSetTriggerChannelConditions function can OR together a number of these

structures to produce the final trigger condition, which can be any possible Boolean

function of the scope's inputs.

The structure is byte-aligned. In C++, for example, you should specify this using the

#pragma pack() instruction.

Elements

channelA, channelB, channelC, channelD, external,

pulseWidthQualifier, the type of condition that should be

applied to each channel. Use these constants:

PS3000A_CONDITION_DONT_CARE

PS3000A_CONDITION_TRUE

PS3000A_CONDITION_FALSE

The channels that are set to PS3000A_CONDITION_TRUE or

PS3000A_CONDITION_FALSE must all meet their conditions

simultaneously to produce a trigger. Channels set to

PS3000A_CONDITION_DONT_CARE are ignored.

aux, not used

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