User manual

PicoScope 6000 Series Programmer's Guide 71

3.9.42.1

PS6000_PWQ_CONDITIONS structure

A structure of this type is passed to ps6000SetPulseWidthQualifier in the conditions

argument to specify the trigger conditions. It is defined as follows:

typedef struct tPwqConditions

{

PS6000_TRIGGER_STATE channelA;

PS6000_TRIGGER_STATE channelB;

PS6000_TRIGGER_STATE channelC;

PS6000_TRIGGER_STATE channelD;

PS6000_TRIGGER_STATE external;

PS6000_TRIGGER_STATE aux;

} PS6000_PWQ_CONDITIONS

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

ps6000SetPulseWidthQualifier function can OR together a number of these structures

to produce the final pulse width qualifier, which can therefore 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, aux: the type of

condition that should be applied to each channel. Use these

constants: -

PS6000_CONDITION_DONT_CARE

PS6000_CONDITION_TRUE

PS6000_CONDITION_FALSE

The channels that are set to PS6000_CONDITION_TRUE or

PS6000_CONDITION_FALSE must all meet their conditions

simultaneously to produce a trigger. Channels set to

PS6000_CONDITION_DONT_CARE are ignored.

external: not used