User Manual

Programming with the PicoScope 4000 Series72

4.10.49.1

PWQ_CONDITIONS structure

A structure of this type is passed to ps4000SetPulseWidthQualifier in the

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

typedef struct tPwqConditions

{

TRIGGER_STATE channelA;

TRIGGER_STATE channelB;

TRIGGER_STATE channelC;

TRIGGER_STATE channelD;

TRIGGER_STATE external;

TRIGGER_STATE aux;

} PWQ_CONDITIONS

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

ps4000SetPulseWidthQualifier function can OR together a number of these

structures to produce the final pulse width qualifier, which can be any possible

Boolean function of the scope's inputs.

Elements

channelA, channelB, channelC, channelD: the type of

condition that should be applied to each channel. Use these

constants: -

CONDITION_DONT_CARE

CONDITION_TRUE

CONDITION_FALSE

The channels that are set to CONDITION_TRUE or

CONDITION_FALSE must all meet their conditions simultaneously to

produce a trigger. Channels set to CONDITION_DONT_CARE are

ignored.

external, aux: not used