Installation guide

ManualsBrandsC-SCOPE ManualsBusiness equipmentR1

API functions80

4.53.1

PS4000A_DIRECTION structure

A structure of this type is passed to ps4000aSetTriggerChannelDirections in

the directions argument to specify the trigger direction for a specified source, and

is defined as follows: -

typedef struct tPS4000ADirection

{

PS4000A_CHANNEL channel;

PS4000A_THRESHOLD_DIRECTION direction;

} PS4000A_DIRECTION;

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

ps4000aSetTriggerChannelDirections 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.

Elements

channel, the channel being configured. See ps4000aSetChannel for allowable

values.

direction, the trigger direction that should be applied to each channel. Use one of

these constants:

Constant

Type

Direction

PS4000A_ABOVE

gated

above the upper threshold

PS4000A_ABOVE_LOWER

gated

above the lower threshold

PS4000A_BELOW

gated

below the upper threshold

PS4000A_BELOW_LOWER

gated

below the lower threshold

PS4000A_RISING

threshold

rising edge, using upper threshold

PS4000A_RISING_LOWER

threshold

rising edge, using lower threshold

PS4000A_FALLING

threshold

falling edge, using upper threshold

PS4000A_FALLING_LOWER

threshold

falling edge, using lower threshold

PS4000A_RISING_OR_FAL

LING

threshold

either edge

PS4000A_INSIDE

window-

qualified

inside window

PS4000A_OUTSIDE

window-

qualified

outside window

PS4000A_ENTER

window

entering the window

PS4000A_EXIT

window

leaving the window

PS4000A_ENTER_OR_EXIT

window

either entering or leaving the window

PS4000A_POSITIVE_RUNT

window-

qualified

entering and leaving from below

PS4000A_NEGATIVE_RUNT

window-

qualified

entering and leaving from above

PS4000A_NONE

none